Corsair SSD sata 3 very slow!!

Question

hi, i have change my SSD from CSSD-F240GB2 (sata2) to CSSD-F240GB3 (sata3).
sata2 work fine but sata3 is unusable. speed is randomly slow.. often error on write.
i had request support to apple store that had replace sata data/power cord without any result...
do you know how i have this problem? hdd work fine on other computer...
thanks

Answer 1

I can now report from both sides of the fence. Up until yesterday, I had a four-year old Core2Duo system, 8GB, that had the dreaded slowness. Not as bad as described above perhaps, but there was clearly something not working as it should. Using matrix-based monitor profiles and updating video card drivers relieved some of the symptoms, but the disease was still there.
At the same time I used an i5 16GB system that was much better. Not good (as in instantaneous), but acceptable.
This morning I fired up my new system for the first time and sent it on its maiden voyage. Naturally the first thing I did was open Lightroom 4.3, and...yes. So that's how it's supposed to work! Snappy, immediately responsive, switching images like nothing ever happened.
Phew.
Now this is a pretty high-spec'ed machine, i7-3820, Asus P9X79 pro, 32GB, SSD. Let's not hope these are the real requirements for good Lightroom performance. But I did reuse the old video card, an ATI 6670 running the 12.8 driver, and it works just fine.
At the moment it's a pretty lean setup: Aside from mobo and video drivers I've only installed Lightroom, CS 5.5 Design Premium and Eizo calibration software. Anti-virus, mouse and keyboard drivers, file synchronization software, font manager and Office remain. I'll keep a close look at how Lightroom behaves as these are added.
Bottom line, and there's no doubt about it: Brilliant as it is, there is sickness in the Lightroom code somewhere. For some people, the unlucky ones,  the symptoms are bad. Most people get away with a mild flu, and some are immune.