Ok, I'm still having issues with my 840 EVO on the EXT0DB6Q firmware.
HP workstation with Xeon W3570, Dual GPUs/various PCI-e devices, so the case runs pretty hot (important later)
Drive is on a PCI-e controller card, and performance appears to be capped at 200MB/sec
This workstation has daily use of general read/writes and old data as well
AV was turned off for the tests
Note: the drive was freshly cloned in mid-July, but I only have data starting in September.
When I started:Warning: Spoiler! (Click to show)
* 197MB/sec vs 164 = ~17% decrease over two weeks!!
* More variance with current test results
* Case runs really, really hot--the case only has a single 92mm exhaust, plus the PSU fan. No intake, and the ambient goes up to 82F at night. CPU is a pretty hot chip. I read a few pages back that higher drive temps induce a more rapid degradation of old data, and this seems to be the case.
Also, I should figure out what is bottlenecking my drive speed. I'm guessing it must be to shared PCI-E lanes or something.
I'm not sure how to proceed. All signs point to drive degradation, but I'm not sure who is left to represent me, since I bought it back in Feb 2014 from Newegg.Edited by Breex243 - 9/30/15 at 3:11pm