Overclock.net › Forums › General Hardware › General Processor Discussions › CPU Causing performance problems?
New Posts  All Forums:Forum Nav:

CPU Causing performance problems?

post #1 of 3
Thread Starter 
Alright, so here is the story, a few months ago I received a Core2Quad Q8400 as a gift, so I quickly replaced my older E7300 right away, figuring it would be a massive upgrade. (Note, I'm kind of an idiot, I can figure out and build a computer that will work well, but for compatibility and certain strengths and weaknesses of part v part I'm at a loss.)

I noticed that I have gotten no performance increase, and my rig struggles with a ton of games, old and new, regardless of settings. My FPS in games dips down from stable to nearly unplayable at times, and I've given up playing most games.

My rig:

GPU: EVGA GForce 460 GTX 768 (Brand new)

Mobo: EVGA 680i Sli (I know of the compatibility issues with 45nm processors.)

Ram: 4 Gigs DDR2-800 I believe.

PSU: 800 W

Cooling: stock

I've narrowed the problem down to one of two things:

- My CPU in programs lists an absolutely ridiculous temperature (Idling at 70, over 90 under stress). I'm not freaking out about these temps as I'm partial on the thought that it's a mis-reading, no other parts get anywhere near 60 degrees on their highest load, and idle at 30-35 degrees (Celsius). That, and if I recall, the throttling

- The 680i's near lack of support for 45nm CPUs, I don't know how much this would affect the performance, but the BIOS update allowed me to use all four cores, so I'm at a loss.

This is a problem that has been plaguing me for months, I don't know whether to get a better fan, as it might just be my MoBo, but I don't want to replace my MoBo before knowing that it's not a temperature problem.

If necessary, I will post a 3DMark test score, though last time I checked I had a horrid score even on the lower settings.
post #2 of 3
Try to remount he cooler first idle temps that high indicate its not making good contact with the cooler or too much/too little paste is applied. A better cooler is good since you can get one for as little as 2o-30 dollars. Some chips run hotter then other also.

Second you could maybe try a diff BIOS version if any other available that support that CPU. I know the 680i don't seem to like 45nm quad iirc.

Third does that quad have lower clocks then the dual core it replaced if so might be something, since even if more cores are there not all game support that even now.

I would say try to OC it but with those temps you are about at the limit. Might be the CPU throttling as you said which would cause terrible performance i games and benches I believe.

EDIT: Stock clocks are same on both at 2.66ghz must be throttling or MB BIOS issues hindering performance. However my friend has similar set up and upgraded from E7200 to same CPU and never heard him complain about performance he has a EVGA 460 1GB video card and 4GB of RAM as well. Got a feeling its the temps or some BIOS setting have you tried clearing CMOS by chance a shot in the dark I know.

Just read up on this and it seems the Q8400 is not supported at all on that board some get it to work other don't as in your case.

http://www.evga.com/support/motherbo...l_CPU_List.pdf

If you still have the E7300 I would re install it and either sell the quad or get a new board that supports it just a tip not sure what your budget or situation is just trying to help

Good luck and good day.
Edited by Rick Arter - 5/12/11 at 8:12pm
    
CPUMotherboardGraphicsRAM
AMD FX-8320 3.6GHz 1.152v Gigabyte 990FXA-UD5 EVGA GTX 960 SSC 4GB 8GB G. Skill DDR3-1333 CL9 1.5v 
Hard DriveOptical DriveCoolingOS
WD 1TB SATA3 + 4TB Storage External USB Thermalright Archon Win 7 Pro x64 
MonitorKeyboardPowerCase
Samsung 27 inch LED 1920x1080 HD Logitech K120 Seasonic X-760 Modular Fractal Define R4 
MouseAudio
Logitech Altec Lansing 2.1 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
AMD FX-8320 3.6GHz 1.152v Gigabyte 990FXA-UD5 EVGA GTX 960 SSC 4GB 8GB G. Skill DDR3-1333 CL9 1.5v 
Hard DriveOptical DriveCoolingOS
WD 1TB SATA3 + 4TB Storage External USB Thermalright Archon Win 7 Pro x64 
MonitorKeyboardPowerCase
Samsung 27 inch LED 1920x1080 HD Logitech K120 Seasonic X-760 Modular Fractal Define R4 
MouseAudio
Logitech Altec Lansing 2.1 
  hide details  
Reply
post #3 of 3
Thread Starter 
Thanks for the heads up, this weekend I'm probably going to install my old E7300, see if it affects anything.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: General Processor Discussions
Overclock.net › Forums › General Hardware › General Processor Discussions › CPU Causing performance problems?