Ok, I'll search for a new PSU... The one which you provided sounds good, thank you
So it's sure that the problem because programs use only 1 graphics core is my PSU? Because the second core loads only with GPU-Z render test (it sounds like I'm forcing Crossfire to work)... when I play games, core 1 is loaded a lot (60-70%, sometimes 95-100%), and core 2 is ALWAYS loaded 0%...
Right now, performance in games is a little bit better than when I was using my "old" GTS 450... All I want is to be able to play games using both HD 4870 X2's GPUs.
Oh, and I noticed another thing... In GPU-Z, Ati Crossfire is enabled, but... It shows "sideport off"?...
I'm not very familiar with the 4870X2 (obviously), but the "sideport off" bit doesn't sound right. A little quick Googling suggests that the sideport is a feature unique to the 4870X2 involving communication between the CPUs. It appears that Crossfire wouldn't work without it.
Can't tell you how to activate it.
My Computer
- Computer Manufacturer/Model Number
- homegrown
- OS
- Windows 7 Pro X64 SP1
- CPU
- Intel Core I7-3930k
- Motherboard
- Asus P9X79 Pro
- Memory
- 16 GB Gskill DDR3-2133
- Graphics Card(s)
- eVGA GTX680
- Sound Card
- Creative X-Fi Titanium
- Monitor(s) Displays
- As PA246Q
- Screen Resolution
- 1920 X 1200
- Hard Drives
- Corsair Force GT, 120 GB
WDC 1.5TB Caviar Black
- PSU
- PCP&C Silencer 750 Crossfire
- Case
- Silverstone FT02
- Cooling
- Noctua NH-D14
- Keyboard
- cheap Logitech USB
- Mouse
- Microsoft Intellimouse Explorer (old optical) USB
- Internet Speed
- 6Mb cable
- Other Info
- Pioneer BDR-205
Samsung SH-203B
Monsoon 5.1 speakers
