Agility 3 SSD a little slower than I expected

[whitehat09]

I just installed a OCZ Agility 3 120GB that is running firmware 2.11. After installing I wanted to benchmark it and used AJA System Test using the following settings:

file size - 1GB
video frame size - 720x486 8-bit (default)
disabled file system cache - checked (default)

The resulting Read/Write speeds are 382.3 MB/s and 384.4 MB/s.

This seems slower than expected, I've read threads where people see speed closer to 450 MB/s. Is there a way to tweak my Lion settings to improve this? Or it is what it is?

Thanks

 

[kasakka]

You're going to get different results from different benchmarks because some use highly compressible data which the SandForce drives handle much better than data that can't be compressed.

It's a fast drive, don't give a damn about test results. You won't see the difference in real use really.

 

[Prodo123]

That's around the limit of SATA 3Gbps (384MB/s to be exact). Maybe your laptop doesn't support 6Gbps?

 

[dsio]

That's around the limit of SATA 3Gbps (384MB/s to be exact). Maybe your laptop doesn't support 6Gbps?

SATA 3Gbps doesn't actually get anywhere near that high, my Vertex 3 on a SATA 2 bus peaked at 275MB/s.

You need to up the frame resolution from 720x486 8-bit (default) to the maximum, then up the file size from 1GB to at least 4GB, or 8GB ideally. Run it again then and you'll get better numbers.

 

[whitehat09]

SATA 3Gbps doesn't actually get anywhere near that high, my Vertex 3 on a SATA 2 bus peaked at 275MB/s.

You need to up the frame resolution from 720x486 8-bit (default) to the maximum, then up the file size from 1GB to at least 4GB, or 8GB ideally. Run it again then and you'll get better numbers.

@dsio: thanks, after changing the video frame size to 4096x2160 10-bit RGB (max) and file size to 8GB I observed read rate of 467 MB/s and write rate of 445 MB/s.

Having never owned an ssd before this one I just thought it was curious that my speeds seemed slightly slower than expected. But I do realize that these are fast no matter what and am greatful for all your replies.

 

[macfan74318]

Does the 2010 Macbook Pro support 6G in any SATA?

 

[dsio]

@dsio: thanks, after changing the video frame size to 4096x2160 10-bit RGB (max) and file size to 8GB I observed read rate of 467 MB/s and write rate of 445 MB/s.

Having never owned an ssd before this one I just thought it was curious that my speeds seemed slightly slower than expected. But I do realize that these are fast no matter what and am greatful for all your replies.

Those figures should be right for an Agility 3, my Vertex 3 runs just around 500/520 or so in these tests, and the A3 is a small percentage slower.

 

[Weaselboy]

Does the 2010 Macbook Pro support 6G in any SATA?

No... not until the 2011 models did SATA III (6G) appear.