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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Gary Key - Thursday, October 27, 2005 - link
It is an awesome board.Thank you for the comments about the sound tests. We will be expanding this test suite greatly in the coming weeks. If you think BF2 has a hit, wait until you see the F.E.A.R. scores with sound effects at maximum. ;->
However, in order to be consistent we will be testing the latest driver sets for each audio implementation along with adding an X-FI into the mix. The audio drivers within the latest NVIDIA 6.82 platform set are more game friendly than the RealTek versions but you give up some functionality and features for it.
yacoub - Sunday, October 30, 2005 - link
Gary - don't know if you will see this or not, but it would be interesting to see how the X-Fi series Creative card compares to the BlueGears X-Mystique, which is a highly rated ~$90 audio card available from NewEgg among other sites that has an excellent featureset (of course it lacks the latest EAX that Creative keeps for themselves so they have a reason to sell their wares to gamers, but it has more Dolby-related 5.1 features than the X-Fi series).Would be neat to see those two cards compared in "% usage" of CPU during gaming.
Gary Key - Monday, October 31, 2005 - link
Good Day,I have bought several cards the past few weeks including this one and the Chaintech AV-710. I intend to greatly expand the scope of audio testing on the board reviews due to the advances in on-board quality/drivers or the lack of in the nF4 area. I have a hard time understanding why most board manufacturers are shying away from C-Media as their on-board solutions always worked/sounded better than the RealTek AC97 counterparts. In the HD audio area it is a toss up in my opinion but I prefer the SigmaTel codec's on the Intel boards at this time including Intel's software packages. Hopefully I will be able to have the full audio section available in a couple of weeks. The next article series will have a little more information but is not representative of where we will be going in the future.
I appreciate the comments and suggestions. I welcome anyone to email me if you have concerns or suggestions about our information. Obviously we have a format to adhere to and cannot test every possible hardware/software solution but I am always open to suggestions. :-)
yacoub - Thursday, October 27, 2005 - link
Oh and dual true-16x PCI-E slots and the passive cooling are both incredibly desireable features. When the AMD version of the board comes out I'll be all over it provided it reviews as well as this one did.Leper Messiah - Thursday, October 27, 2005 - link
If the AMD version works as well as this one does for intel's, I've got my new mobo picked out. Heat pipe cooling+ 8 phase power= The win! 840EE's at 4.2 might actually give an overclocked X2 a run for its money! :gasp;bob661 - Thursday, October 27, 2005 - link
Except that EE's will run MUCH hotter than X2's. This isn't a big deal if you have your own nuclear reactor.Gary Key - Thursday, October 27, 2005 - link
It was not that bad on this board (a very good description from you), idle temps at 37c, 4.1GHz at 46c according to the bios readings. I believe they were very close as I had a duplicate setup with the MSI P4N in it and you could feel the difference with your hands near the case. We will have thermal tests in the near future.
Karaktu - Thursday, October 27, 2005 - link
One thing I would REALLY like to see added to review articles is the total power consumption of the test setup, both at stock and overclocked settings. There are a couple of power supplies (Coolermaster, Thermaltake) that include attached wattage displays for convenience.This would be useful for a number of reasons, not the least of which would be an idea of how much it's going to cost you to run such a rig. ;)
Joe
Gary Key - Thursday, October 27, 2005 - link
Hi Joe,We have discussed this and it is nice to see a request for it. :-) Hopefully, once I have the test equipment setup then we can include these results in selected articles. You will find this information in the some of the CPU reviews already. We will also start checking thermal readings when a manufacturer introduces new technology onto the board. Asus did this with the eight-phase design and it certainly helped the thermal conditions on the board and with the CPU. This was based on a more subjective review of numbers generated from the bios and monitoring programs (along with overclocking results) which is okay for a high level discussion but is not detailed enough for absolute objective statements.
Thank you.
breetai72 - Monday, October 31, 2005 - link
I find it very hard to believe that this is an 8 phase vreg. Simply counting the inductors indicates that it's only a 5 phase. Can you post the VR controller part number so I can see the datasheet?