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Slow SSD performance in P55/H55 chipsets?

Z

zagood

Diamond Member
Just read through this article and the corresponding forum discussion:

http://www.storagereview.com/how_improve_low_ssd_performance_intel_series_5_chipset_environments

Interesting bandaid, but that's about it.

I recently switched from a 775 system to i5/1156/H55 and noticed that my SSD performance was slower in synthetic benchmarks, but hard to tell in real world applications. I'm wondering if this may have something to do with it?

Of course I want full SSD performance at all times, but also the heat/power saving benefits of the CPU idle state. So if anyone can add anything to this, would love to hear it.

P.S. Empty space was approx. the same when these benches were run, 26gb free vs. 28gb free. Ran OCZ Performance Tool before both.

Current system:
i5 760
MSI H55-G43
2x2gb DDR3
GTX 260
Vertex 60gb SSD + 640 Black + 1tb Green
Corsair 650 HX

Old system:
Q6600
GB EP45-UD3P
(rest is the same except with DDR2)

Old benchmark:
asssdbenchoczvertex6420.png


New benchmark:
asssdbenchoczvertexatad.png
 
Could you try with CrystalDiskMark and set test size at 8GB? I'm suspecting the Intel driver gave you better 4K read performance by caching instead; which is unfair. A test size of 8GB should alleviate this and give more consistent scores.

FWIW the scores you get on the second screenshot are what i would expect from an Indilinx Barefoot SSD. Indilinx has 4 channels so the 4K-64 read score should be about 4 times as high as the normal 4K read score. That's about right on the second screenshot.
 
Try other sata ports. I had this and changed. Ofc whats interesting is which chipset the dataport connects to, so just try em. Mine went from 190/ in crystalmark to 260 where it should be (intel x25-m)
 
Update - motherboard died, moved to P55A-UD3, some interesting differences...looks like the Intel RST drivers add more performance. I'll be switching sata ports from the Intel to the Marvell 6Gbps socket later today.

MS AHCI driver FW 1.5




Intel RST FW 1.5




Intel RST FW 1.6


 
Marvell SATA-3 connector - about the same with power saving on/off, and looks like they don't have a specific driver, just using MSAHCI? Loaded the Marvell console and that didn't change anything (I'm assuming that's just for RAID).

Plus, much slower sequential write speeds.

 
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