SSD Write Speeds Cut In Half
Any Ideas?
Sunday, January 13, 2013 by RedneckDude | Discussion: Personal Computing
Hey guys. I'm posting this in hopes that someone out there has had my problem and has the answer.
I seem to have lost half my write speed on an OCZ Agility 4 SSD.
256 GB Sata III on a Sata III Mobo.
Trim enabled. ACHI mode.
1-13-2013 result on left....2012 on right.
EDIT: Windows 7 64 bit. 16 GB ram.
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Reply #42 Monday, February 25, 2013 2:16 PM
Can't edit. First part of the above was a quote, of course.
Reply #43 Monday, February 25, 2013 2:21 PM
If it was the gfx card, it wouldn't start fast and then slow down in hours.
Reply #44 Monday, February 25, 2013 2:29 PM
Do you do the test before or after you install the gfx card drivers? Do you know if the Southbridge frequency has changed at all? Have you tried swapping cables on your SSDs? What kind of performance tests have you been doing and for how long?
Reply #45 Monday, February 25, 2013 2:39 PM
Tested after install of gfx drivers. Reply 38 states as much.
I have no idea about the SB freq.
I did swap to a new cable.
Tests have been ATTO and Crystal Diskmark.
Not too often. GC has had plenty of time to work.
Reply #46 Monday, February 25, 2013 2:39 PM
ATTO was used by request by OCZ and results sent to them, which is why they say the drive needs replaced.
Reply #47 Monday, February 25, 2013 3:29 PM
SSDs have more issues than understood by most people.
My Revo doesn't have TRIM, and when you do a specific utilization pattern it will practically freeze up (20mb/sec writes) until it can do a proper GC pass.
Often the speed will be reduced if you go over a firmware hardcoded limit, and when things get fragmented they're still going to slow down SSD or no.
There's even counterfeit Flash in some cases http://thessdreview.com/daily-news/latest-buzz/manufacturer-shipped-review-sample-ssd-contains-fake-nand-flash-memory/
But hey, if OCZ says it needs to be replaced go for it.
Reply #50 Wednesday, March 13, 2013 1:47 AM
UPDATE:
OCZ sent me a new Vertex 4.
Rated higher than my Agility 4, costs about $130.00 more than I paid for the Agility 4.
I'm happy...lol. 
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Reply #41 Monday, February 25, 2013 2:15 PM
Redneck, before you RMA, take out the graphics
card you just put in and rerun the test. I'm wondering if the graphics card forced the board to lower the bus speed.
On a secure erase and fresh install I get good speeds with both 650 gfx cards in. Until I install my programs.
Why would I need to remove a gfx card? And do you mean both, or just one?