Topic Title: Can i run sapphire 7970 and toxic sapphire r9 280x of 650w supply
Topic Summary:
Created On: 06/08/2014 09:53 PM
Status: Post and Reply
Linear : Threading : Single : Branch
Search Topic Search Topic
Topic Tools Topic Tools
View similar topics View similar topics
View topic in raw text format. Print this topic.
 06/08/2014 09:53 PM
User is offline View Users Profile Print this message

Author Icon
maq1919
Peon

Posts: 1
Joined: 06/08/2014

Just want to know if i can crossfire the cards. or if i need a better power supply.

 06/08/2014 10:29 PM
User is offline View Users Profile Print this message

Author Icon
backFireX64
Elite

Posts: 1038
Joined: 11/14/2010

 

Yes, you can crossfire them, just not 100% problem-free with that PSU.

 

HD 7970 tdp = approx. 250w at load

R9 280x tdp = approx. 250w at load as well

 

For both cards alone you will need approx. 550-600w raw power from psu during maximum load (got that figured from metro: ll)

Now, calculate the needs of a beefy cpu, overclock, hard drives, sound cards, case fans, dvd players etc.

You then realize that a good 850w 80+ certification PSU is a good option for you.

 

 

EDIT:    you also want to make sure you have enough amps through the +12v psu rail. 30A  i believe (for each gpu).

Take a look at this:

Power requirements for graphics card



-------------------------

gigabyte X58A-UD3R rev.2, core i7 975 3.9ghz (stock voltage), windows 8.1 64-bit, corsair 12gb DDR3 1600mhz 7-7-7-20 RAM, sapphire HD 6990 (stock clocks), coolermaster ultimate 900w PSU.
amd catalyst 14.6 RC2 june23



Edited: 06/10/2014 at 12:16 PM by backFireX64
Statistics
84277 users are registered to the AMD Support and Game forum.
There are currently 2 users logged in.

FuseTalk Hosting Executive Plan v3.2 - © 1999-2014 FuseTalk Inc. All rights reserved.