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Crossfire 7970's LOW FPS. enough power? - Page 3

post #21 of 29
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Quote:
Originally Posted by Cyro999 View Post

Reset your CPU to stock (optimized defaults in bios)

Tried that earlier bud, I also tried those settings but it's not going higher than 3.8ghz with those settings from drnilly007
post #22 of 29
Ok sorry and thanks for pointing out, i specifically read everything in the thread but misread a little at the end of the page
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post #23 of 29
Quote:
Originally Posted by tjc2005 View Post

Really? I also thought 1000w would be fine. How are you monitoring how much usage the pc is using?

Like I said, it's clearly using the second card because Tomb Raider takes advantage of it but some other games seem to be running worst or not even changing fps... And nothing shuts down or anything. If it were the cards not getting enough juice would they simply throttle back or what? I'm not really sure how it works.

Slow reply but I'm using a kill-a-watt power meter. Measures wattage at the wall (which is more than the PSU is feeding to the computer). Load was 100% on both GPU's (Bitcoin mining--as stressful as it gets) and 50% or so on the CPU (processing some stuff in FL Studio). You will never hit 100% load on all elements in a game.
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post #24 of 29
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Originally Posted by alcal View Post

Slow reply but I'm using a kill-a-watt power meter. Measures wattage at the wall (which is more than the PSU is feeding to the computer). Load was 100% on both GPU's (Bitcoin mining--as stressful as it gets) and 50% or so on the CPU (processing some stuff in FL Studio). You will never hit 100% load on all elements in a game.

No problem, understood thanks for that.

I'm getting around 60+ fps in Crysis 3 max settings 2xAA.. But V-sync off. at 2560x1440p, It is working (crossfire) in Crysis 3 It would seem, however only getting about 40fps with V-sync on, does that sound normal to anyone else?

I tend to play all my games with V-sync on but I guess I'm outta luck.
post #25 of 29
Dumb question, but is the FPS readout normal, but the games stutter anyway, or is the FPS readout low too?
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post #26 of 29
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Quote:
Originally Posted by Dogmatic34 View Post

Dumb question, but is the FPS readout normal, but the games stutter anyway, or is the FPS readout low too?

sorry for late reply, Yeah well some games it is normal, some not really. e.g. World of Warcraft, V-sync on Full-screen. Say's its running at 60fps... but the camera movement feels horrible... so I changed it to windowed mode, felt smooth... but froze the whole system after about 10 minutes.. forcing me to press the reboot button.

So I now have to switch V-sync off in World of Warcraft and have it full-screen, It hasn't crashed yet... but of course you get screen tearing which I am not a big fan of... But the camera feels normal and everything, and obviously it's going higher than 60fps. I limited it in WoW settings to about 80 I think because it was going into the 130+ making my cards hot. I should limit it to 60 really but yeah..

So that's what happens...
post #27 of 29
Yea, vsync adds input lag and makes game feel horrible, that's how it works tongue.gif
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post #28 of 29
tjc2005,

just curious here and likely not your issue but where do you have your video cards seating on the mobo, s1 and s3 or 1 and 2?

Have you tried both cards solo in s1? Performance the same?

Have you tried a confirmed stable video card in both/all PCIe slots?

I had big problems with Crossfire in the past - first try with 4800s was a mess with BSODs and poor performance and then I tried with 5800s some time ago on a different PC with issues more like yours. Turned out one of the PCIe slots had a problem.

Just for peace of mind, it might be worth taking the time to go methodically through each hardware setup, card 1 in slots 1, 2 and 3, then card 2 the same and test performance. If you can be sure both cards are good in all slots, it would at least rule out such a hardware problem.

I was considering retrying crossfiring my MSI Lightning 7970's tonight but your thread might have put me off. smile.gif
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post #29 of 29
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Quote:
Originally Posted by Crowgasm View Post

tjc2005,

just curious here and likely not your issue but where do you have your video cards seating on the mobo, s1 and s3 or 1 and 2?

Have you tried both cards solo in s1? Performance the same?

Have you tried a confirmed stable video card in both/all PCIe slots?

I had big problems with Crossfire in the past - first try with 4800s was a mess with BSODs and poor performance and then I tried with 5800s some time ago on a different PC with issues more like yours. Turned out one of the PCIe slots had a problem.

Just for peace of mind, it might be worth taking the time to go methodically through each hardware setup, card 1 in slots 1, 2 and 3, then card 2 the same and test performance. If you can be sure both cards are good in all slots, it would at least rule out such a hardware problem.

I was considering retrying crossfiring my MSI Lightning 7970's tonight but your thread might have put me off. smile.gif

Thanks for the reply, Yeah I have tried them both in slot 1 and that is fine, they are sitting in slot 1 & 2., not tried 3, maybe I will, I think it might be working okay, not sure if it's just some games or what.. I could try slot 2 and 3 maybe I will at some point. Thanks for the tip.

I am running at 1440p so obviously it's going to take fps down a bit compared to 1080p. I just cannot get Splinter Cell to run well at all maxed out.. if I disable crossfire It runs better, but cannot max it out completely, I have to change ssao down or something. However it seems to run fine maxed out 1080p (single card, but it probably would anyway).

I'm certainly ruling out the power thing, they just wouldn't operate if it was that & I definitely get an increase in Tomb Raider with Crossfire enabled. The same with Far Cry 3 runs much better with crossfire... stutters still though, which I had with a single card.. and Diablo 3 runs better, So maybe it's just certain games.

I'm really hoping for a new driver release though, looks like I have to turn off v-sync for most games to get a good fps increase.
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