Asus P5N32-SLI: Dual x16 - What Dreams Are Made On . . .
by Gary Key on October 27, 2005 12:05 AM EST- Posted in
- Motherboards
Disk Controller Performance
With the variety of disk drive benchmarks available, we needed a means of comparing the true performance of the wide selection of controllers. The logical choice was Anand's storage benchmark first described in Q2 2004 Desktop Hard Drive Comparison: WD Raptor vs. the World. To refresh your memory, the iPeak test was designed to measure "pure" hard disk performance, and in this case, we kept the hard drive as consistent as possible while varying the hard drive controller. The idea is to measure the performance of a hard drive controller with a consistent hard drive.
We played back Anand's raw files that recorded I/O operations when running a real world benchmark - the entire Winstone 2004 suite. Intel's iPEAK utility was then used to play back the trace file of all IO operations that took place during a single run of Business Winstone 2004 and MCC Winstone 2004. To try to isolate performance difference to the controllers that we were testing, we used the Maxtor MaXLine III 7L300S0 300GB 7200 RPM SATA drive in all tests . The drive was formatted before each test run and a composite average of 5 tests on each controller interface was tabulated in order to ensure consistency in the benchmark.
iPeak gives a mean service time in milliseconds; in other words, the average time that each drive took to fulfill each IO operation. In order to make the data more understandable, we report the scores as an average number of IO operations per second so that higher scores translate into better performance. This number is meaningless as far as hard disk performance is concerned as it is just the number of IO operations completed in a second. However, the scores are useful for comparing "pure" performance of the storage controllers in this case.
With the variety of disk drive benchmarks available, we needed a means of comparing the true performance of the wide selection of controllers. The logical choice was Anand's storage benchmark first described in Q2 2004 Desktop Hard Drive Comparison: WD Raptor vs. the World. To refresh your memory, the iPeak test was designed to measure "pure" hard disk performance, and in this case, we kept the hard drive as consistent as possible while varying the hard drive controller. The idea is to measure the performance of a hard drive controller with a consistent hard drive.
We played back Anand's raw files that recorded I/O operations when running a real world benchmark - the entire Winstone 2004 suite. Intel's iPEAK utility was then used to play back the trace file of all IO operations that took place during a single run of Business Winstone 2004 and MCC Winstone 2004. To try to isolate performance difference to the controllers that we were testing, we used the Maxtor MaXLine III 7L300S0 300GB 7200 RPM SATA drive in all tests . The drive was formatted before each test run and a composite average of 5 tests on each controller interface was tabulated in order to ensure consistency in the benchmark.
iPeak gives a mean service time in milliseconds; in other words, the average time that each drive took to fulfill each IO operation. In order to make the data more understandable, we report the scores as an average number of IO operations per second so that higher scores translate into better performance. This number is meaningless as far as hard disk performance is concerned as it is just the number of IO operations completed in a second. However, the scores are useful for comparing "pure" performance of the storage controllers in this case.
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Beenthere - Thursday, October 27, 2005 - link
Why would ANYONE spend the coin to buy an Intel based SLI system when you can buy an AMD system for the same price that will out-perform the Intel system and be upgradable for years???The only reason I can see for anyone buying any Intel product at this time is if they are stuck with an Intel system already and they desire to upgrade to a faster chip if they can find one to fit whatever socket Mobo they have. Otherwise I see no logical reason whatsoever for even considering an obsolete, under-performing Intel product.
Shintai - Thursday, October 27, 2005 - link
You ask the wrong question. Why would anyone buy a SLI/CrossFire system at all.bob661 - Thursday, October 27, 2005 - link
He can ask any question he wants. There are no wrong questions.Because one can. :)Ricky Ling - Thursday, October 27, 2005 - link
I only afraid on the future upgradeability on this board because according to ASUS Support FAQ (as this news has not been revealed on the Internet), this board does not support future Pentium 4 that based on 65nm technology, namely Cedar Mill (Single core replacing Prescott) and Presler (Dual core replacing Smithfield)So how is testing done the Presler sample processor cause I thought Anand got holding of 1 Presler sample...Pls double check at the following :
http://support.asus.com/faq/faq_right_second_detai...">http://support.asus.com/faq/faq_right_s...P5N32-SL...
As Presler start hitting OEM already....we need more info on this issue???
Gary Key - Sunday, October 30, 2005 - link
The initial information I have from Asus this weekend is the board will support the 65nm CPU range with a bios update and the CPU steppings must be B1 or above.
Gary Key - Thursday, October 27, 2005 - link
Hello,I had already asked for public clarification about this issue from Asus after visiting the website last week. I believe the entire FAQ has not been properly updated as it still states the Pentium 820 will only work in single core mode which is no longer the case with this chipset revision. We have not had an issue testing the Presler or Cedar Mill CPUs with current board designs from different suppliers.
I will respond once I have further information.
Thank you.
Chuckles - Thursday, October 27, 2005 - link
How's the clearance on the right-most PCIe x1 slot? It looks like a card put in there would be perilously close to the northbridge heatsink.Gary Key - Thursday, October 27, 2005 - link
Hi,The D-Link DGE-560T PCIe network adaptor card fit fine and it is the longest card I tried in the x1 slot. I would agree if a card had several logic chips placed in the right area on the back of the board then clearance could be an issue with the heatsink. However, the few peripheral PCIe cards that I have fit fine.
erwos - Thursday, October 27, 2005 - link
I wouldn't have minded seeing the difference between bridged SLI and bridgeless SLI on both SLI Dual x16 and SLI Dual x8 motherboards.My gut feeling is that nVidia is going to be phasing out the bridge in the near future, if they can get the same performance without it using the PCIe bus.
-Erwos
DigitalFreak - Thursday, October 27, 2005 - link
"ASUS CPU Lock Free (BIOS setting to unlock multiplier locked CPUs)"Does this mean that all multipliers (up and down) are available again?