Okay, so
I have made some changes on the refrigeration scheme
Now the fans are push-pull, and the fan that was on top of the CPU now is in the back.
Also, I have 4 sticks of memory in Dual Channel, but they were in the wrong order (serials mismatch), changed orders so the rams make dual channel with the matching serials.
But problem still persists, it's EXTREMELY annoying and frustrating, bought this computer a week ago and still couldn't use it because of this load of problems. I've bought it used from a guy who owns a hardware store and said this parts are brand new from spare parts from lots he bought. I'll go see him tomorrow.
Apart from that, I've paid cheap on this computer, and I'll only ask for a refund in the last case
The lags spikes continues in every game: Skyrim, Far Cry 2 and GTA IV.
I get around 40 FPS with a LOT of lag on Far Cry 2, and according to Benchmarks my GPU would hold Average 122 FPS with minimum 76 FPS. Seriously, wtf is going on?!
Is there a way to debug VRM for problems? Should I expect some change in voltage?
My GPU while gaming:
Core: XX% (this is where the drops occurs)
Core: 1.21V
Core: 860Mhz
Memory: 1200Mhz
Temperature: < 68º
Fan: XX%, never saw it over 50%
Idle:
Core: 0%
Core: 0.83V
Core: 300Mhz
Memory: 150Mhz
Temperature: 32º (21ºC in my city)
Fan: 20%
PS: About the VRM position, you guys are right - now it's under the back fan. There's no space to add a horizontal fan there, the CPU cooler is HUGE, similar to
this one