Overclock.net › Forums › Graphics Cards › AMD/ATI › i have a question about crossfire
New Posts  All Forums:Forum Nav:

i have a question about crossfire

post #1 of 8
Thread Starter 
i have an amd HD4890 xfx gpu and my friend gave me his old 4890 for free and i want to use these cards on my crossfire mobo.so heres my question how many amps on the 12 volt rails would i need for each card to be able to run with out problems my other specs are phenom 2 x4 920 at stock 4 gigs ddr2 memory 2 sats hard drives and an ide cdrw and 2 9mm led fans
post #2 of 8
Which power supply do you have?
post #3 of 8
Thread Starter 
OCZ OCZGXS600 9PA6000306 600W ATX Power Supply thats my powersupply it was new in the box when i bought it this year
Edited by kaitlin4599 - 11/4/13 at 5:34pm
post #4 of 8
Quote:
Originally Posted by kaitlin4599 View Post

ocz 650 watt

You'll be fine.

4890s use about 200w by themselves and your cpu will be at about 125w. And 50w for the rest of your build.

Your system will probably load lower than these values.
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
  hide details  
Reply
post #5 of 8
Quote:
Originally Posted by MrTOOSHORT View Post

You'll be fine.

4890s use about 200w bykc0X8t themselves and your cpu will be at about 125w. And 50w for the rest of your build.

Your system will probably load lower than these values.

Agree
Edited by sdf258sefkljs - 11/4/13 at 5:43pm
post #6 of 8
Thread Starter 
but i was told a single 4890 requires at least 32 amps on a single 12 volt rail correct me if im wrong
post #7 of 8
Quote:
Originally Posted by kaitlin4599 View Post

but i was told a single 4890 requires at least 32 amps on a single 12 volt rail correct me if im wrong

32amps X 12V = 384w.

That'll be for the whole system, not just the card.
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
  hide details  
Reply
post #8 of 8
Thread Starter 
so will my card run on my psu or no
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › i have a question about crossfire