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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 ?
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%
So, what would be the minimum CPU recommendation to get full usage on 7970 Xfire?
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.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.
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.
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.


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.
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
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.
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
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.

 
	