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Recently I've noticed that my SSD, which is a Crucial model CT128V4SSD2, is performing really really poorly. I took a benchmark test and here's the result:

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In addition, I noticed from the Task Manager dialog in Windows 8 that the response time of the drive is very long.

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Is my SSD having serious problems? Is there a way to identify what's causing the slowness?

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the benchmark images don't load for me, could you use the "upload" picture button to host them properly? –  Ben Brocka Nov 3 '12 at 20:06
    
Sorry, didn't know there's an upload picture button. Thanks for editing the question. –  superkinhluan Nov 3 '12 at 20:09
    
No I didn't notice any slowness before. The only thing I change recently is installing a new graphics card. –  superkinhluan Nov 3 '12 at 20:11
    
How full is the drive? Is TRIM enabled? See here for info on how to check that. –  Indrek Nov 3 '12 at 20:20
    
The drive still has 81 GB free out of 120GB. TRIM is enabled. –  superkinhluan Nov 3 '12 at 20:24
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2 Answers

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Look at the picture. Is tells you that you run the SSD in IDE mode (PCIIDE) instead of AHCI (MSHACI/AMD_sata). So go into the BIOS and change the mode to AHCI.

Attention, enable the AHCI drivers first or you'll get the 0x7B STOP code "INACCESSABLE_BOOT_DEVICE".

http://support.microsoft.com/kb/922976

The key is renamed in Windows 8 to StorAHCI instead of Msahci, the rest is the same.

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Thanks for the response. Does it mean for SSD, I have to use AHCI mode? I didn't know this. –  superkinhluan Nov 24 '12 at 16:01
    
always run all HDDs in AHCI mode. This improves performance a lot. –  magicandre1981 Nov 24 '12 at 18:16
    
I've just checked my BIOS, and it has only the RAID mode. There's no AHCI mode. will RAID mode help? –  superkinhluan Nov 24 '12 at 18:18
    
which motherboard do you use? –  magicandre1981 Nov 24 '12 at 18:19
    
It's the default motherboard that comes with Dell Studio 540: IPIEL-RN2 Motherboard –  superkinhluan Nov 24 '12 at 19:14
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According to the specs for your drive:

Newegg Product Description
Performance
Max Sequential Read
Up to 230 MB/s
Max Sequential Write
Up to 175 MB/s
4KB Random Read
Up to 10,000 IOPS
4KB Random Write
Up to 4,000 IOPS
MTBF
1,200,000 hours

That suggests that your read is about there, the write is a bit slow (but you aren't doing sequential in some of those tests - so not alarming).

The seek time is pretty questionable though. Might be a sign that it was formatted poorly, oddly enough. SSD's are a bit more particular about that (the best tool I have read of/used is Parted).

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Sequential writes are pretty slow, 76 MB/s vs. 175 MB/s in the specs. 4K reads and writes are also rather slow. Specs give 39 MB/s for reads and 15.6 MB/s for writes, but OP's drive gets 16 MB/s and 3.8 MB/s respectively. –  Indrek Nov 3 '12 at 20:17
    
Are you suggesting I'm using Parted to reformat my drive? –  superkinhluan Nov 3 '12 at 20:17
    
@Indrek, what is OP's drive? –  superkinhluan Nov 3 '12 at 20:19
    
Original Poster's (SSD)drive. –  page4096 Nov 3 '12 at 20:20
    
@superkinhluan "OP" means "original poster", so in this case, you. I'm referring to the benchmark results you posted in your question. –  Indrek Nov 3 '12 at 20:21
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