Archive for the ‘Ethics and Technology’ Category

h1

Quick Take: HP Blade Tops 8-core VMmark w/OC’d Memory

September 25, 2009

HP’s ProLiant BL490c G6 server blade now tops the VMware VMmark table for 8-core systems – just squeaking past rack servers from Lenovo and Dell with a score of 24.54@17 tiles: a new 8-core record. The half-height blade was equipped with two, quad-core Intel Xeon X5570 (Nehalem-EP, 130W TDP) and 96GB ECC Registered DDR3-1333 (12x 8GB, 2-DIMM/channel) memory.

In our follow-up, we found that HP’s on-line configuration tool does not allow for DDR3-1333 memory so we went to the street for a comparison. For starters, we examined the on-line price from HP with DDR3-1066 memory and the added QLogic QMH2462 Fiber Channel adapter ($750) and additional NC360m dual-port Gigabit Ethernet controller ($320) which came to a grand total of $28,280 for the blade (about $277/VM, not including Blade chassis or SAN storage).

Stripping memory from the build-out results in a $7,970 floor to the hardware, sans memory. Going to the street to find 8GB sticks with DDR3-1333 ratings and HP support yielded the Kingston KTH-PL313K3/24G kit (3x 8GB DIMMs) of which we would need three to complete the build-out.  At $4,773 per kit, the completed system comes to $22,289 (about $218/VM, not including chassis or storage) which may do more to demonstrate Kingston’s value in the market place rather than HP’s penchant for “over-priced” memory.

Now, the interesting disclosure from HP’s testing team is this:

Notes from HP's VMmark submission.

Notes from HP's VMmark submission.

While this appears to boost memory performance significantly for HP’s latest run (compared to the 24.24@17 tiles score back in May, 2009) it does so at the risk of running the Nehalem-EP memory controller out of specification – essentially, driving the controller beyond the rated load. It is hard for us to imagine that this specific configuration would be vendor supported if used in a problematic customer installation.

SOLORI’s Take:Those of you following closely may be asking yourselves: “Why did HP choose to over-clock the  memory controller in this run by pushing a 1066MHz, 2DPC limit to 1333MHz?”  It would appear the answer is self-evident: the extra 6% was needed to put them over the Lenovo machine. This issue raises a new question about the VMmark validation process: “Should out of specification configurations be allowed in the general benchmark corpus?” It is our opinion that VMmark should represent off-the-shelf, fully-supported configurations only – not esoteric configuration tweaks and questionable over-clocking practices.

Should there be as “unlimited” category in the VMmark arena? Who knows? How many enterprises knowingly commit their mission critical data and processes to systems running over-clocked processors and over-driven memory controllers? No hands? That’s what we thought… Congratulations anyway to HP for clawing their way to the top of the VMmark 8-core heap…

h1

Quick Take: Magny-Cours Spotted, Pushed to 3GHz for wPrime

September 13, 2009

Andreas Galistel at NordicHardware posted an article showing a system running a pair of engineering samples of the Magny-Cours processor running at 3.0GHz. Undoubtedly these images were culled from a report “leaked” on XtremeSystems forums showing a “DINAR2” motherboard with SR5690 chipset – in single and dual processor installation – running Magny-Cours at the more typical pre-release speed of 1.7GHz.

We know that Magny-Cours is essentially a MCM of Istanbul delivered in the rectangular socket G34 package. One thing illuminating about the two posts is the reported “reduction” in L3 cache from 12MB (6MB x 2 in MCM) to 10MB (2 x 5MB in MCM). Where did the additional cache go? That ‘s easy: since a 2P Magny-Cours installation is essentially a 4P Istanbul configuration, these processors have the new HT Assist feature enabled – giving 1MB of cache from each chip in the MCM to HT Assist.

“wPrime uses a recursive call of Newton’s method for estimating functions, with f(x)=x2-k, where k is the number we’re sqrting, until Sgn(f(x)/f'(x)) does not equal that of the previous iteration, starting with an estimation of k/2. It then uses an iterative calling of the estimation method a set amount of times to increase the accuracy of the results. It then confirms that n(k)2=k to ensure the calculation was correct. It repeats this for all numbers from 1 to the requested maximum.”

wPrime site

Another thing intriguing about the XtremeSystems post in particular is the reported wPrime 32M and 1024M completion times. Compared to the hyper-threading-enabled 2P Xeon W5590 (130W TDP) running wPrime 32M at 3.33GHz (3.6GHz turbo)  in 3.950 seconds, the 2P 3.0GHz Magny-Cours completed wPrime 32M in an unofficial 3.539 seconds – about 10% quicker while running a 10% slower clock. From the myopic lens of this result, it would appear AMD’s choice of “real cores” versus hyper-threading delivers its punch.

SOLORI’s Take: As a “reality check” we can compared the reigning quad-socked, quad-core Opteron 8393 SE result in wPrime 32M and wPrime 1024M at 3.90 and 89.52  seconds, respectively. Adjusted for clock and core count versus its Shanghai cousin, the Magny-Cours engineering samples – at 3.54 and 75.77 seconds, respectively – turned-in times about 10% slower than our calculus predicted. While still “record breaking” for 2P systems, we expected the Magny-Cours/Istanbul cores to out-perform Shanghai clock-per-clock – even at this stage of the game.

Due to the multi-threaded nature of the wPrime benchmark, it is likely that the HT Assist feature – enabled in a 2P Magny-Cours system by default – is the cause of the discrepancy. By reducing the available L3 cache by 1MB per die – 4MB of L3 cache total – HT Assist actually could be creating a slow-down. However, there are several things to remember here:

  • These are engineering samples qualified for 1.7GHz operation
  • Speed enhancements were performed with tools not yet adapted to Magny-Cours
  • The author indicated a lack of control over AMD’s Cool ‘n Quiet technology which could have made “as tested” core clocks somewhat lower than what CPUz reported (at least during the extended tests)
  • It is speculated that AMD will release Magny-Cours at 2.2GHz (top bin) upon release, making the 2.6+ GHz results non-typical
  • The BIOS and related dependencies are likely still being “baked”

Looking at the more “typical” engineering sample speed tests posted on the XtremeSystems’ forum tracks with the 3.0GHz overclock results at a more “typical” clock speed of 2.6GHz for 2P Magny-Cours: 3.947 seconds and 79.625 seconds for wPrime 32M and 1024M, respectively. Even at that speed, the 24-core system is on par with the 2P Nehalem system clocked nearly a GHz faster. Oddly, Intel reports the W5590  as not supporting “turbo” or hyper-threading although it is clear that Intel’s marketing is incorrect based on actual testing.

Assuming Magny-Cours improves slightly on its way to market, we already know how 24-core Istanbul stacks-up against 16-thread Nehalem in VMmark and what that means for Nehalem-EP. This partly explains the marketing shift as Intel tries to position Nehalep-EP as a destined for workstations instead of servers. Whether or not you consider this move a prelude to the ensuing Nehalem-EX v. Magny-Cours combat to come or an attempt to keep Intel’s server chip power average down by eliminating the 130W+ parts from the “server” list,  Intel and AMD will each attempt win the war before the first shot is fired. Either way, we see nothing that disrupts the price-performance and power-performance comparison models that dominate the server markets.

[Ed: The 10% difference is likely due to the fact that the author was unable to get “more than one core” clocked at 3.0GHz. Likewise, he was uncertain that all cores were reliably clocking at 2.6GHz for the longer wPrime tests. Again, this engineering sample was designed to run at 1.7GHz and was not likely “hand picked” to run at much higher clocks. He speculated that some form of dynamic core clocking linked to temperature was affecting clock stability – perhaps due to some AMD-P tweaks in Magny-Cours.]

h1

Quick Take: Dell/Nehalem Take #2, 2P VMmark Spot

September 9, 2009

The new 1st runner-up spot for VMmark in the “8 core” category was taken yesterday by Dell’s R710 – just edging-out the previous second spot HP ProLiant BL490 G6 by 0.1% – a virtual dead heat. Equipped with a pair of Xeon X5570 ($1386/ea, bulk list) and 96GB registered DDR3/1066 (12x8GB), the 2U, rack mount R710 weighs-in with a tile ratio of 1.43 over 102 VMs. :

  • Dell R710 w/redundant high-output power supply, ($18,209)
  • 2 x Intel Xeon X5570 Processors (included)
  • 96GB ECC DDR3/1066 (12×8GB) (included)
  • 2 x Broadcom NexXtreme II 5709 dual-port GigabitEthernet w/TOE (included)
  • 1 x Intel PRO 1000VT quad-port GigabitEthernet (1x PCIe-x4 slot, $529)
  • 3 x QLogic QLE2462 FC HBA (1x PCIe slot, $1,219/ea)
  • 1 x LSI1078 SAS Controller (on-board)
  • 8 x 15K SAS OS drive, RAID10 (included)
  • Required ProSupport package ($2,164)
  • Total as Configured: $24,559 ($241/VM, not including storage)

Three Dell/EMC CX3-40f arrays were used as the storage backing of the test. The storage system included 8GB cache, 2 enclosures and 15, 15K disks per array delivering 19 LUNs at about 300GB each. Intel’s Hyper-Threading and  “Turbo Boost” were enabled for 8-thread, 3.33GHz core clocking as was VT; however embedded SATA and USB were disabled as is common practice.

At about $1,445/tile ($241/VM) the new “second dog” delivers its best at a 20% price premium over Lenovo’s “top dog” – although the non-standard OS drive configuration makes-up a half of the difference, with Dell’s mandatory support package making-up the remainder. Using a simple RAID1 SAS and eliminating the support package would have droped the cost to $20,421 – a dead heat with Lenovo at $182/VM.

Comparing the Dell R710 the 2P, 12-core benchmark HP DL385 G6 Istanbul system at 15.54@11 tiles:

  • HP DL385 G6  ($5,840)
  • 2 x AMD 2435 Istanbul Processors (included)
  • 64GB ECC DDR2/667 (8×8GB) ($433/DIMM)
  • 2 x Broadcom 5709 dual-port GigabitEthernet (on-board)
  • 1 x Intel 82571EB dual-port GigabitEthernet (1x PCIe slot, $150/ea)
  • 1 x QLogic QLE2462 FC HBA (1x PCIe slot, $1,219/ea)
  • 1 x HP SAS Controller (on-board)
  • 2 x SAS OS drive (included)
  • $10,673/system total (versus $14,696 complete from HP)

Direct pricing shows Istanbul’s numbers at $1,336/tile ($223/VM) which is  a 7.5% savings per-VM over the Dell R710. Going to the street – for memory only – changes the Istanbul picture to $970/tile ($162/VM) representing a 33% savings over the R710.

SOLORI’s Take: Istanbul continues to offer a 20-30% CAPEX value proposition against Nehalem in the virtualization use case – even without IOMMU and higher memory bandwidth promised in upcoming Magny-Cours. With the HE parts running around $500 per processor, the OPEX benefits are there for Istanbul too. It is difficult to understand why HP wants to charge $900/DIMM for 8GB PC-5300 sticks when they are available on the street for 50% less – that’s a 100% markup. Looking at what HP charges for 8GB DDR3/1066 – $1,700/DIM – they are at least consistent. HP’s memory pricing practice makes one thing clear – customers are not buying large memory configurations from their system vendors…

On the contrary, Dell appears to be happy to offer decent prices on 8GB DDR3/1066 with their R710 at approximately $837/DIMM – almost par with street prices.  Looking to see if this parity held up with Dell’s AMD offerings, we examined the prices offered with Dell’s R805: while – at $680/DIMM – Dell’s prices were significantly better than HP’s, they still exceeded the market by 50%. Still, we were able to configure a Dell R805 with AMD 2435’s for much less than the equivalent HP system:

  • Dell R805 w/redundant power ($7,214)
  • 2 x AMD 2435 Istanbul Processors (included)
  • 64GB ECC DDR2/667 (8×8GB) ($433/ea, street)
  • 4 x Broadcom 5708 GigabitEthernet (on-board)
  • 1 x Intel PRO 100oPT dual-port GigabitEthernet (1x PCIe slot, included)
  • 1 x QLogic QLE2462 FC HBA (1x PCIe slot, included)
  • 1 x Dell PERC SAS Controller (on-board)
  • 2 x SAS OS drive (included)
  • $10,678/system total (versus $12,702 complete from Dell)

This offering from Dell should be able to deliver equivalent performance with HP’s DL385 G6 and likewise savings/VM compared to the Nehalem-based R710. Even at the $12,702 price as delivered from Dell, the R805 represents a potential $192/VM price point – about $50/VM (25%) savings over the R710.

h1

Quick Take: HP’s Sets Another 48-core VMmark Milestone

August 26, 2009

Not satisfied with a landmark VMmark score that crossed the 30 tile mark for the first time, HP’s performance team went back to the benches two weeks later and took another swing at the performance crown. Well, the effort paid off, and HP significantly out-paced their two-week-old record with a score of 53.73@35 tiles in the heavy weight, 48-core category.

Using the same 8-processor HP ProLiant DL785 G6 platform as in the previous run – complete with 2.8GHz AMD Opteron 8439 SE 6-core chips and 256GB DDR2/667 – the new score comes with significant performance bumps in the javaserver, mailserver and database results achieved by the same system configuration as the previous attempt – including the same ESX 4.0 version (164009). So what changed to add an additional 5 tiles to the team’s run? It would appear that someone was unsatisfied with the storage configuration on the mailserver run.

Given that the tile ratio of the previous run ran about 6% higher than its 24-core counterpart, there may have been a small indication that untapped capacity was available. According to the run notes, the only reported changes to the test configuration – aside from the addition of the 5 LUNs and 5 clients needed to support the 5 additional tiles – was a notation indicating that the “data drive and backup drive for all mailserver VMs” we repartitioned using AutoPart v1.6.

The change in performance numbers effectively reduces the virtualization cost of the system by 15% to about $257/VM – closing-in on its 24-core sibling to within $10/VM and stretching-out its lead over “Dunnington” rivals to about $85/VM. While virtualization is not the primary application for 8P systems, this demonstrates that 48-core virtualization is definitely viable.

SOLORI’s Take: HP’s performance team has done a great job tuning its flagship AMD platform, demonstrating that platform performance is not just related to hertz or core-count but requires balanced tuning and performance all around. This improvement in system tuning demonstrates an 18% increase in incremental scalability – approaching within 3% of the 12-core to 24-core scaling factor, making it actually a viable consideration in the virtualization use case.

In recent discussions with AMD about the SR5690 chipset applications for Socket-F, AMD re-iterated that the mainstream focus for SR5690 has been Magny-Cours and the Q1/2010 launch. Given the close relationship between Istanbul and Magny-Cours – detailed nicely by Charlie Demerjian at Semi-Accurate – the bar is clearly fixed for 2P and 4P virtualization systems designed around these chips. Extrapolating from the similarities and improvements to I/O and memory bandwidth, we expect to  see 2P VMmarks besting 32@23 and 4P scores over 54@39 from HP, AMD and Magny-Cours.

SOLORI’s 2nd Take: Intel has been plugging away with its Nehalem-EX for 8-way systems and – delivering 128-threads – promises to deliver some insane VMmarks. Assuming Intel’s EX scales as efficiently as AMD’s new Opterons have, extrapolations indicate performance for the 4P, 64-thread Nehalem-EX shoud fall between 41@29 and 44@31 given the current crop of speed and performance bins. Using the same methods, our calculus predicts an 8P, 128-thread EX system should deliver scores between 64@45 and 74@52.

With EX expected to clock at 2.66GHz with 140W TDP and AMD’s MCM-based Magny-Cours doing well to hit 130W ACP in the same speed bins, CIO’s balancing power and performance considerations will need to break-out the spreadsheets to determine the winners here. With both systems running 4-channel DDR3, there will be no power or price advantage given on either side to memory differences: relative price-performance and power consumption of the CPU’s will be major factors. Assuming our extrapolations are correct, we’re looking at a slight edge to AMD in performance-per-watt in the 2P segment, and a significant advantage in the 4P segment.

h1

Quick Take: HP Plants the Flag with 48-core VMmark Milestones

August 12, 2009

Following on the heels of last month we predicted that HP could easily claim the VMmark summit with its DL785 G6 using AMD’s Istanbul processors:

If AMD’s Istanbul scales to 8-socket at least as efficiently as Dunnington, we should be seeing some 48-core results in the 43.8@30 tile range in the next month or so from HP’s 785 G6 with 8-AMD 8439 SE processors. You might ask: what virtualization applications scale to 48-cores when $/VM is doubled at the same time? We don’t have that answer, and judging by Intel and AMD’s scale-by-hub designs coming in 2010, that market will need to be created at the OEM level.

Well, HP didn’t make us wait too long. Today, the PC maker cleared two significant VMmark milestones: crossing the 30 tile barrier in a single system (180 VMs) and exceeding the 40 mark on VMmark score. With a score of 47.77@30 tiles, the HP DL785 G6 – powered by 8 AMD Istanbul 8439 SE processors and 256GB of DDR2/667 memory – set the bar well beyond the competition and does so with better performance than we expected – most likely due to AMD’s “HT assist” technology increasing its scalability.

Not available until September 14, 2009, the HP DL785 G6 is a pricey competitor. We estimate – based on today’s processor and memory prices – that a system as well appointed as the VMmark-configured version (additional NICs, HBA, etc) will run at least $54,000 or around $300/VM (about $60/VM higher than the 24-core contender and about $35/VM lower than HP’s Dunnnigton “equivalent”).

SOLORI’s Take: While the September timing of the release might imply a G6 with AMD’s SR5690 and IOMMU, we’re doubtful that the timing is anything but a coincidence: even though such a pairing would enable PCIe 2.0 and highly effective 10Gbps solutions. The modular design of the DL785 series – with its ability to scale from 4P to 8P in the same system – mitigates the economic realities of the dwindling 8P segment, and HP has delivered the pinnacle of performance for this technology.

We are also impressed with HP’s performance team and their ability to scale Shanghai to Istanbul with relative efficiency. Moving from DL785 G5 quad-core to DL785 G6 six-core was an almost perfect linear increase in capacity (95% of theoretical increase from 32-core to 48-core) while performance-per-tile increased by 6%. This further demonstrates the “home run” AMD has hit with Istanbul and underscores the excellent value proposition of Socket-F systems over the last several years.

Unfortunately, while they demonstrate a 91% scaling efficiency from 12-core to 24-core, HP and Istanbul have only achieved a 75% incremental scaling efficiency from 24-cores to 48-cores. When looking at tile-per-core scaling using the 8-core, 2P system as a baseline (1:1 tile-to-core ratio), 2P, 4P and 8P Istanbul deliver 91%, 83% and 62.5% efficiencies overall, respectively. However, compared to the %58 and 50% tile-to-core efficiencies of Dunnington 4P and 8P, respectively, Istanbul clearly dominates the 4P and 8P performance and price-performance landscape in 2009.

In today’s age of virtualization-driven scale-out, SOLORI’s calculus indicates that multi-socket solutions that deliver a tile-to-core ratio of less than 75% will not succeed (economically) in the virtualization use case in 2010, regardless of socket count. That said – even at a 2:3 tile-to-core ratio – the 8P, 48-core Istanbul will likely reign supreme as the VMmark heavy-weight champion of 2009.

SOLORI’s 2nd Take: HP and AMD’s achievements with this Istanbul system should be recognized before we usher-in the next wave of technology like Magny-Cours and Socket G34. While the DL785 G6 is not a game changer, its footnote in computing history may well be as a preview of what we can expect to see out of Magny-Cours in 2H/2010. If 12-core, 4P system price shrinks with the socket count we could be looking at a $150/VM price-point for a 4P system: now that would be a serious game changer.

h1

NEC Adds Top 48-Core, Dell Challenges 24-Core in VMmark Race

July 29, 2009

NEC’s venerable Express5800/A1160 tops the 48-core VMmark category today with a score of 34.05@24 tiles to wrest the title away from IBM who established the category back in June, 2009. NEC’s new “Dunnington” X7460 Xeon-based score represents a performance per tile ratio of 1.41 and a tile to core efficiency of 50% using 128GB of ECC DDR2 RAM.

Compared to the leading 24-core “Dunnington” results – held by IBM’s x3850 M2 at 20.41@14 tiles – the NEC benchmark sets a scalability factor of 85.7% when moving from 4-socket to 8-socket systems. Both servers from NEC and IBM are scalable systems allowing for multiple chassis to be interconnected to achieve greater CPU-per-system numbers – each scaling in 4-CPU increments – ostensibly for OLTP advantages. The NEC starts at around $70K for 128GB and 48-cores resulting in a $486/VM cost to VMmark.

Also released today, Dell’s PowerEdge R905 – with 24 2.8GHz Istanbul cores (8439 SE) and 128GB of ECC DDR2 RAM – secures the number two slot in the 24-category with a posting of 29.51@20 tiles. This represents a tile ratio of 1.475 and tile efficiency of 83.3% for the $29K rack server from Dell at about $240/VM. Compared to its 12-core counterpart, this represents a 91% scalability factor.

If AMD’s Istanbul scales to 8-socket at least as efficiently as Dunnington, we should be seeing some 48-core results in the 43.8@30 tile range in the next month or so from HP’s 785 G6 with 8-AMD 8439 SE processors. You might ask: what virtualization applications scale to 48-cores when $/VM is doubled at the same time? We don’t have that answer, and judging by Intel and AMD’s scale-by-hub designs coming in 2010, that market will need to be created at the OEM level.

Based on the performance we’re seeing in 8-socket systems relative to 4-socket and the upcoming “massively mult-core” processors in 2010, the law of diminishing returns seems to favor the 4-socket system as the limit for anything but massive OLTP workloads. Even then, we expect to see 48-core in a “4-way” box more efficient than the same number of cores in an 8-way box. The choice in virtualization will continue to be workload biased, with 2P systems offering the best “small footprint” $/VM solution and 4P systems offering the best “large footprint” $/VM solution.

h1

RIP Dunnington: HP’s 4P/24-core Istanbul Takes VMmark Summit

July 15, 2009
HP has simultaneously achieved two near identical VMmark scores with their ProLiant DL585 G6 rack server and ProLiant BL685c G6 blade, claiming the summit from the reigning 24-core champion. Since first establishing the 24-core tier VMmark in September 2009, the Intel “Dunnington” 6-core processor (FSB architecture) has gone unchallenged. Now, with the release of the Opteron 8439SE raising the performance bar and the Opteron 8435 making a clear price-performance case, Dunnington’s vacation is over.

Today’s Istanbul-based achievements – established in the same memory footprint as the top Dunnington – renders the venerable processor all but obsolete, besting the champ by 4 tiles (24 more virtual machines) with a score-tile ratio of 1.5 for the rack system and 1.46 (same as the Dunnington at 14 tiles) for the blade. Using the HP and IBM on-line configuration tools, we established the retail (on-line) price for each system – down to the Fiber Channel HBA’s – and compared them for $/VM value. Here are the results:

HP DL685 G6 HP BL685c G6 IBM x3850 M2
Processor 4x Opteron 8439SE 2.8GHz 4x Opteron 8435 2.6GHz 4x Xeon X7460 2.67GHz
Memory 128GB (16x8GB PC2-5300 Reg ECC) 128GB (16x8GB PC2-5300 Reg ECC) 128GB (32x4GB PC2-5300 Reg ECC)
LAN Controllers 1x Dual-Port NC371i 1Gbps,
3x Dual-Port NC380T 1Gbps
2x Dual-Port NC532i Flex-10 10Gbs,
1x Dual-Port NC360m 1Gbps
2x Intel PRO 1000PT Dual-Port 1Gbps
HBA Qlogic QMH2462 Dual-Port FC Qlogic QMH2462 Dual-Port FC 2x Qlogic QMH2462 Dual-Port FC
OS RAID Controller HP Smart Array P800 HP Smart Array P400i HBA
OS Disks 2x 73Gb SAS 10K 2x 73Gb SAS 10K SAN
On-line Price $36,862.00 $35,296.00 $34,269.00
On-line w/3rd Party Memory $28,712.00 $27,356.00 $33,207.00
VMmark Results 29.95@20 tiles 29.19@20 tiles 20.5@14 tiles
VMmark Tile Ratio 1.5 1.46 1.46
Cost/VM Retail $307.18 $294.13 $407.96
Cost/VM 3rd Party $239.27 $227.97 $276.73

The results indicate a 21-38% savings per-VM for Istanbul over Dunnington in the 4P/24-core virtualization space. This is bread-and-butter territory for VDI implementations and SQL virtualizations, and Intel’s last remaining market place for the Dunnington processor. With the top-bin Istanbul weighing-in with 3% better performance, 18% less power consumption and 30% more capacity against Dunnington at the same price point, Intel’s 4P gambit is played-out and Nehalem-EX cannot arrive too soon for Intel.

It is worth asking the question: does the HP ProLiant 4P/24-core offer the best value? The answer depends on the value proposition. From a straight $/VM vantage point, the HP DL385 G6 comparison demonstrated a more economical $182/VM – a difference of $40/VM lower than the BL685c G6 – so the 2P rack system still comes out on top for the absolute bottom-line concious. However, for applications like SQL consolidations, the additional savings in licensing on 4P platforms versus 2P platforms dwarfs this differential.

What is clear: AMD’s Istanbul solution will remain unchallenged in the 4P space both in raw performance and in price-performance until Nehalem-EX is delivered. That means if Nehalem-EX does not arrive in Q3/2009, the market will likely wait for Q1/2010 to make any long-term purchasing decisions in anticipation of the new platforms slated to break-in the new year.