Starslayer67
Weaksauce
- Joined
- Aug 17, 2010
- Messages
- 68
Note: This is basically a rehash of my previous thread here; I'm posting this based on addictedto60fps's advice given there. Mods, please lock if I'm doing something wrong here.
That out of the way, my new 6970's have been giving me some trouble. Basically, Crossfire isn't playing nice. I've tested each card individually, and they both seem to work fine, but when I enable Crossfire, it either barely increases FPS, or worsens it. If the game is not too graphically demanding (i.e., is old), it'll hit 60 FPS and glide smoothly, but anything relatively recent causes an odd issue to happen: the master GPU tops out at about 60% usage, while the slave is all the way at 100% usage the whole time.
I emailed AMD Support about this, and they said it was probably the cards not getting enough power. This seems a bit odd to me, though, since my power draw never climbs above 550 W or so according to my UPS, and my X-750 puts basically all of its power down the 12V rail, so the cards should be getting enough juice.
I have so far tried both Crossfire bridges I got with my cards, and I have tried all drivers 10.12 and newer. Nothing has caused any change in my system's performance (the 10.12's just caused loads of crashes, btw). I currently have the 11.6's and the 11.6 CAP 1 profiles installed. All other system specs are in my sig.
If power difficulties are the case, I presume something like an X-850 or Corsair AX-850 would be enough, yes? And if my cards are fully powered, what is going on instead?
That out of the way, my new 6970's have been giving me some trouble. Basically, Crossfire isn't playing nice. I've tested each card individually, and they both seem to work fine, but when I enable Crossfire, it either barely increases FPS, or worsens it. If the game is not too graphically demanding (i.e., is old), it'll hit 60 FPS and glide smoothly, but anything relatively recent causes an odd issue to happen: the master GPU tops out at about 60% usage, while the slave is all the way at 100% usage the whole time.
I emailed AMD Support about this, and they said it was probably the cards not getting enough power. This seems a bit odd to me, though, since my power draw never climbs above 550 W or so according to my UPS, and my X-750 puts basically all of its power down the 12V rail, so the cards should be getting enough juice.
I have so far tried both Crossfire bridges I got with my cards, and I have tried all drivers 10.12 and newer. Nothing has caused any change in my system's performance (the 10.12's just caused loads of crashes, btw). I currently have the 11.6's and the 11.6 CAP 1 profiles installed. All other system specs are in my sig.
If power difficulties are the case, I presume something like an X-850 or Corsair AX-850 would be enough, yes? And if my cards are fully powered, what is going on instead?