I recently experienced some strange behavior from my system and I wanted to get your opinions on what it could be. First off, dem specs:
- ASUS P5Q Pro Mobo
- PC Power and Cooling S75QB 750W
- Intel Core 2 Duo E8400 Wolfdale Dual-Core 3.0GHz (OC to 3.9GHz)
- ARCTIC Freezer 7 Pro (w/Artic Silver 5)
- 2x ASUS 1GD5 Radeon HD 5850 (Cypress Pro) 1GB 256-Bit GDDR5 (X-fire, Stock speeds)
- G.SKILL 8GB (4 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
- Rosewill THOR V2 Full ATX
- Kingston HyperX 3K 120g SSD (system files, EVE)
- Some 500mb SATA 7200rpm HDD I had lying around (mostly media storage)
So, a fairly old system I've been upgrading incrementally over the years. The CPU OC has been running the entirety of it's life thus far and is a rock solid champ. I use this system mostly for media playback and gaming (primarily EVE, MOBAs, SC2, Elder Scrolls/Fallout etc) and for the most part it has been extremely solid with admirable performance for it's age/cost.
About a week ago I experienced a series of random hard shut downs- No BSOD, no error messages, just straight to black screen. I was running 2 clients of EVE on separate screens, one on each GPU (I was not running them in x-fire at that point cause EVE doesn't like it that way). I start everything back up and go right back to where I was, figuring it was simply a fluke. Within 5 minutes of dual-screening the same thing happens... I get out the dust off and give my case a good clean, then go back to what I was doing. It happens 3-4 more times, until I move down to a single client on a single GPU. Throughout this ordeal I've set up all my temp monitors and everything seems nice and frosty at all times. The fan on my PSU is working normally as far as I can tell.
I've since replaced my old 5850s (suspect PSU issues? clearly it's time to upgrade your graphics!) with a single MSI gtx 760. I figured it would be less of a draw on my PSU, and in general I prefer a single card situation over sli/crossfire. I haven't experienced the issue since getting the new card, no matter how hard I stress the system with prime95/furmark (though I only ran them on full for ~3 hours). Once again, temps were plenty acceptable, if not even a little chilly, for the workload.
However, I noticed a fairly quiet buzz/clicking emanating from the PSU yesterday, and realized it was something that I've heard in the past but always assumed was my CPU fan...which is currently in something of a 'custom' configuration involving case fans attached to my cooling tower via hair ties which occasionally come into contact with the fan blades. Anyway,with my current sensitivity to potential PSU issues I checked to be sure and indeed the noise it coming from the PSU- it subsided after about 5 minutes.
Thanks for reading- I appreciate any suggestions you might have for me.