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So, I've been looking around the net a bit for benchmarks of the ATI SB700/750 southbridges, as the 600 series had terrible SATA performance, and the 700/750 are apparently not much better. Unfortunately, I never really found too many benchmarks so I'm going to post my results.
This was done on an Asus M4A79-Deluxe which is 790FX/SB750. Supposedly the SB700 and SB750 aren't much different and don't have any differences in SATA performance, with the exception of the SB750 supporting RAID-5.
This test was done with the following 4 drives: Seagate 250Gb ST3250820NS. I set them to raid-0, 128Kb. This was done in Windows 7 RC1, with the latest ATI raid drivers.
As you can see, the controller is clearly the bottleneck here, however performance is still pretty quick with an average 144-165MB/s across the entire disk. It's definitely feels faster than a single disk. Maybe some people could provide some insight on what these 4 disks would look like if not limited by the controller?
Here is a popular disk on here, the Western Digital 640Gb AAKS. The controller is still in RAID mode and not AHCI mode for this test. I'm not sure if it would be any quicker running in AHCI mode.
Even though limited by the controller, the raid0 array still gives pretty decent performance, across the entire surface of the array--which is definitely nice.
This was done on an Asus M4A79-Deluxe which is 790FX/SB750. Supposedly the SB700 and SB750 aren't much different and don't have any differences in SATA performance, with the exception of the SB750 supporting RAID-5.
This test was done with the following 4 drives: Seagate 250Gb ST3250820NS. I set them to raid-0, 128Kb. This was done in Windows 7 RC1, with the latest ATI raid drivers.
As you can see, the controller is clearly the bottleneck here, however performance is still pretty quick with an average 144-165MB/s across the entire disk. It's definitely feels faster than a single disk. Maybe some people could provide some insight on what these 4 disks would look like if not limited by the controller?
Here is a popular disk on here, the Western Digital 640Gb AAKS. The controller is still in RAID mode and not AHCI mode for this test. I'm not sure if it would be any quicker running in AHCI mode.
Even though limited by the controller, the raid0 array still gives pretty decent performance, across the entire surface of the array--which is definitely nice.