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Am I bottle necking now that im crossfire ?

Tags:
  • Crossfire
  • Motherboards
  • Graphics
Last response: in Graphics & Displays
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December 8, 2013 10:44:46 PM

Okay a brief run down of what ive got going on here.

I have a 990fxa-ud3h rev 4.0 mother board

an Amd fx 8350 cpu at 4318.90 mhz

and 2 amd/ati sapphire 7870 ghz oc in crossfire.

i have a stallion rd700 watt psu

16gb or gskills ddr3 1600 ram

Monitor is a sony Brovia kld-32l400

I play lots of games, for example Planetside 2

With the 1 7870 with not fps capps like smoothing or v-sync i was seeing fps from 80-180 consistantly

With 2 7870 in crossfire same settings i see fps 40-80 consistantly

Also my cards seem to be only running at 20-30% load i have ulps disabled because i could not monitor the second card with it enabled.

all temps seem within tolerance but the cards do not seem to be quite sequential in load value's close but not the same .

Whats going on here i was getting great fps with just 1 7870 now its almost half .

Both cards are in pci-e 2.0 x16 slots on my mobo and are in crossfire according to gup-z and CCC.

thanks for any insite into this issue,

More about : bottle necking crossfire

a b V Motherboard
December 8, 2013 10:48:22 PM

have you tried your setup in any other games? some games just don't do crossfire well...
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December 8, 2013 10:52:21 PM

i have played other games with the crossfire, but this performance reduction is pointless when i was getting double with 1 card, also i do not have a fps monitor for other games unless some are comptiable with overwolf which has built in fps monitor.

I dont seem to be having problems with the games ive been playing just wondering why the fps dropp in planetside 2 with crossfire.
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a b V Motherboard
December 8, 2013 11:13:46 PM

hmmm, download fraps, its free and is a great way to check you fps, then compare it in other games. unfortunately xfire does not like some games as much as others, and it is far from perfect.. if it is only on a couple of games, then it is more than likely a driver issue for that particular game not scaling well
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December 9, 2013 2:05:50 AM

I downloaded Msi afterburner and set up all the GPu monitoring all sees well with crossfire but GPU are only at 28% load at the highest on the first game test
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