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Crossfire GPU's only getting 40-60% Usage on certain games?

Marine-RX179 said:
The thing is...unless the game would use more up to 5-6 threads, the i7 will not offer any better performance than the i5. The problem you are having now is more to do with CPU bottleneck I would imagine.

I hate to say this, but Intel's small incremental performance increase for this last few gens has really ruin it for us who have moved onto 120/144Hz monitor for gaming.
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What about trying to overclock a little more, maybe 4.8-5.0Ghz?

Tom
 
Marine-RX179 said:
If you can overclock it higher, it will certainly help. However it won't make a day and night difference, but more like possibly a couple fps higher (which is not bad to be honest).

However for IvyBridge i5 overclocking to 4.70GHz the temp would most likely already start to get out of control even if you got good CPU cooler. You might need to considering delidding the CPU and get rid of the sealant, but it's not something I would recommend to anyone who don't have complete confidence with their hands:
http://www.youtube.com/watch?v=XXs0I5kuoX4
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I.e me! xD
I watched that video the other after you posted, do you not find the performance good enough with a 120Hz on your setup?

Tom
 
So is CPU bottleneck where the CPU does not have enough power or clock speed to run both GPU's?
Surely though for a few frames more it is not worth overclocking the CPU unless I will definitely notice more smoothness.

Tom
 
Marine-RX179 said:
It's usually referred as "CPU scaling".

To put simply, with the few exception such graphic demanding games like Crysis 3, crossfire 7970 should be able to do minimum frame rate above 100~120fps without issue, however for CPU, it is not uncommon for an overclock i5 to have a minimum frame rate around only 70-80fps. The actual frame rate you get in games will always be limited the lower of the two (CPU frame rate vs graphic card frame rate), so despite crossfire 7970s themselves may have no problem holding 100fps+, if the CPU minimum frame rate is only 70fps, the minimum frame rate you get in game would still be 70fps.
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Would that explain why my GPU usage does not go as high as I would like as the CPU is holding back, or could the GPU's still be at 90-100% and still be held back by the CPU?

Tom
 
Yes I agree, I think the Motherboard is letting me down. If I were to get a new motherboard would I have to buy another serial key for Windows and what Motherboard would be best suited?
Would it be worth all that hassle to go 8x/8x or 16x/16x, would you performance boost be worth it?

Tom
 
LtMatt said:
You can use the same serial key. Just make sure you remove your windows licence key before installing the mobo. Install the mobo, re-activate and marines your uncle.

http://www.sevenforums.com/tutorials/165472-product-key-number-uninstall-deactivate-windows.html

If you do add a new mobo maybe then would maybe be a good time for a fresh windows install though.
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Ahh seems simple enough, when deleting the partitions from my SSD (where Windows is installed), do I have to delete partitions from my HDD aswell as they contain all my games and whatnot or is that the whole point in a fresh install?

Tom
 
Orangey said:
Partitions should be readable by a new OS. Seems pretty drastic to delete all your games unless you think there's a problem in the game files themselves.

You don't need to re-partition your boot drive unless you want to re-arrange the way space is allocated.
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Oh so I just need to re-write, not delete partitions and then write?

Tom
 
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