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40% Xfire GPU usage bf3

Hmm I'm getting strange read-outs on caspian, CPU 4ghz, HT on = 80% util, both GPU's at 75% util. Moar investigation required me thinks.
 
cheapest I can find them at [new] is £260.

don't really fancy buying a second hand proc, at the end of the day unless you know the seller or they are a member on here, its very likely to be someone elses overclocking reject!

I'd probably sell the board too and go 1150 in your shoes, which I did myself as I'm pretty much always going to remain single gpu and ended up just buying a 4670k and a board, the upgrade ended up costing me about 40 quid.
 
I dont get why you would want more gpu usage ? are your fps that low? my fps on low settings is 195, why would you want more regardless of gpu usage ?
 
I'd probably sell the board too and go 1150 in your shoes, which I did myself as I'm pretty much always going to remain single gpu and ended up just buying a 4670k and a board, the upgrade ended up costing me about 40 quid.

unfortunately that still wont help me as the 4670k is non hyperthreaded and would seemingly bottleneck me aswell.

and the i7 haswells are £260 ish then id need a new mboard etc so would work out more expensive in the end!.

I dont get why you would want more gpu usage ? are your fps that low? my fps on low settings is 195, why would you want more regardless of gpu usage ?

as I said in my opening post I play bf with everything Ultra/ max [excl motion blur] and my frames drop to 80fps in some places, with more gpu usage id expect them to stay around the 120fps Im after. also im getting stuttering which is due to the CPU being unable to keep up with the cards


swaying towards sending the card back on DSR tbh.
 
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PG I find a good way to stress the cpu is on a 64 man map like caspian, leave the us/russian base and look across the whole map. I find that seems to stress the cpu nicely and often cause gpu usage to drop.


Ok all testing with HT on, Caspian 64 man packed server...

4.0ghz, 2133 C9, 1200/1650 _-_ CPU Usage = ~80%, GPU Usage = ~75%

4.9ghz, 2400 C10, 1200/1650 _-_ CPU Usage = ~73%, GPU Usage = ~97%
 
Ok all testing with HT on, Caspian 64 man packed server...

4.0ghz, 2133 C9, 1200/1650 _-_ CPU Usage = ~80%, GPU Usage = ~75%

4.9ghz, 2400 C10, 1200/1650 _-_ CPU Usage = ~73%, GPU Usage = ~97%

Thanks for that pgi.

So it's fairly conclusive that if anybody wants to crossfire a 7950/7970 they had better consider whether they have a CPU fast enough to help them stretch their legs in BF3 Multiplayer

My i7 @ 4.1 with HT on is not cutting it.
 
So, what would be the minimum CPU recommendation to get full usage on 7970 Xfire?

Possibly, 4.4Ghz+ on 920 // 4.3Ghz+ 26/2700K // 4.2Ghz+ 3770K. Just a guesstimate, but I doubt it would be far from that on average.
 
IMO he'd be as well dropping 'down' to a 26/700K, can be had for ~£150 used, odds are will clock within touching distance of 5Ghz under good air which should match/beat a 3770K.
Sound advice, the problem with the ib chips and high oc's is keeping them cool enough. Saying that though my 3770k only worked out at £65.00 after selling my 3570k. Still pondering wether to de lid it or not.
 
Possibly, 4.4Ghz+ on 920 // 4.3Ghz+ 26/2700K // 4.2Ghz+ 3770K. Just a guesstimate, but I doubt it would be far from that on average.

Just seems mad that my usage is effectively cut in half because i have a 2500k @ 4.6 (thought they were the best gaming CPUs around?)

Good research btw guys
 
Possibly, 4.4Ghz+ on 920 // 4.3Ghz+ 26/2700K // 4.2Ghz+ 3770K. Just a guesstimate, but I doubt it would be far from that on average.

Around that yeah :)

Though we must remember this is only a select few maps on a select few games, it hasn't suddenly rendered every single 4 thread chip useless :p

2500K's etc... still are very fast chips, especially if you're on a single card, heck, even if you game at 1080/60hz, CF 7900's is probably still quite effective. Only those (including my self!) using 120hz displays* and wanting to keep things north of 100fps should really be considering dropping to a more thread focused chip.

*and of course those on 1440/1600/5760 resolutions @60/120hz.
 
Hmm I'm getting strange read-outs on caspian, CPU 4ghz, HT on = 80% util, both GPU's at 75% util. Moar investigation required me thinks.

Told ya. Game engine is poorly optimized likely making any small bottleneck seem worse than it should be with a better optimized game. Hopefully AMD can get a hold of it and work some Crysis 3 typ optimization on it in time for bf4. ;)
 
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Told ya. Game engine is poorly optimized likely making any small bottleneck seem worse than it should be with a better optimized game. Hopefully AMD can get a hold of it and work some Crysis 3 typ optimization on it in time for bf4. ;)

Well if they were using the FX 8350 with CF 7970's on the E3 BF4 stand, then I would think/hope that BF4 is optimized better than BF3, otherwise I am selling my kit and going to play pacman on my Atari 2600!
 
Around that yeah :)

Though we must remember this is only a select few maps on a select few games, it hasn't suddenly rendered every single 4 thread chip useless :p

2500K's etc... still are very fast chips, especially if you're on a single card, heck, even if you game at 1080/60hz, CF 7900's is probably still quite effective. Only those (including my self!) using 120hz displays* and wanting to keep things north of 100fps should really be considering dropping to a more thread focused chip.

*and of course those on 1440/1600/5760 resolutions @60/120hz.

Spot on.
 
Just seems mad that my usage is effectively cut in half because i have a 2500k @ 4.6 (thought they were the best gaming CPUs around?)

Good research btw guys

Around that yeah :)

Though we must remember this is only a select few maps on a select few games, it hasn't suddenly rendered every single 4 thread chip useless :p

2500K's etc... still are very fast chips, especially if you're on a single card, heck, even if you game at 1080/60hz, CF 7900's is probably still quite effective. Only those (including my self!) using 120hz displays* and wanting to keep things north of 100fps should really be considering dropping to a more thread focused chip.

*and of course those on 1440/1600/5760 resolutions @60/120hz.

(Yeah, Crossfire/SLI/BattleField maniacs/hi-res eye candy people only) :D

I'm relating this only to BF3 currently and slightly projecting to BF4. If you play this game a lot and want your rig to run the best on something you spend a lot of time on, I'd say consider a CPU change. To the casual BF3 soldat, I'd say they would be happy playing it as long as it wasn't a slideshow but there's something else to think about now. With the new consoles having 8 cores and Battlefield using them more efficiently on the horizon, then for the Battlefield enthusiast, I'd be thinking of a CPU upgrade. Otherwise why waste all the hassle upgrading for one game, however, with the new consoles architecture being what it is, we can expect hope games will be using more CPU power now so maybe something to consider for all starting in the near future. For now, it's not worth it unless you fall into the categories above and want it but maybe the consoles will force the issue?.

In the current economic state, AMD can really cash in if more cores = better scores, as it's vastly different in price between the hex core 3930K and 8 core 8320/8350.
 
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