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Building PC in combination of GTX 660, Asrock Z87 Pro4, i5 4440

Hello guys!

I have bought video card ASUS GeForce GTX 660 and inserted it into my system (MOBO Gigabyte 965P-DS3, CPU Intel Core Duo E6400) and it didn't quite give results as I wanted. I tested on Counter Strike GO and I couldn't increase my graphic settings without losing of FPS (before I had video card GT 220). Bottom line - PC performance hasn't changed with change of GPU.
Well my conclusion is that my CPU is bottlenecking my GPU, so I'm thinking of buying - MOBO Asrock Z87 Pro4; CPU - Intel i5 4440.
So I want to ask this community help and know answers for these questions:

1. Is it my current CPU and MOBO failure to use my new GPU potential?
2. Are these three compotents a good choice (GTX 660*, i5 4440, Asrock Z87 Pro4) for a gaming PC?**

Thank you!
*GTX 660 is already bought.
**I'm not looking for PC which would run all games on Ultra graphics, but just with decent output as my system does not fulfill this cause.
5 answers Last reply Best Answer
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  1. Best answer
    theres an easy test. look at your gpu usage. if its below 50% then you can be pretty sure its bottlenecked by your c2d.
    so yes its more than likely your cpu is holding your system back and by some margin especialy if your trying to play frostbyte 2 engine based games.
    yes the cpu is a good choice but as its a 4440 you dont need a z series board as you cant oc the 4440. better get an h series and save some money. over all though the switch to the i5 platform will release your gpu to show its full potential.
  2. 1) See - http://cpuboss.com/cpus/Intel-Core2-Duo-E6400-vs-Intel-Core-i5-4440

    The i5 will help a bit.

    The Core Duo E6400 shouldn't bottleneck a GT660 anyway though

    2) You don't need a Z (overlocking) 77 motherboard for a non overclocking i5 4440 cpu. Just get a H77 mobo instead.
  3. Excuse me for misleading you but my CPU is "Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz (2 CPUs), ~2.4GHz" direct quote from dxdiag.
    I don't know what hit me when I typed CPU Intel Core Duo E6400. :)

    But I got the general idea, thanks for advice on motherboard.
  4. HEXiT said:
    theres an easy test. look at your gpu usage. if its below 50% then you can be pretty sure its bottlenecked by your c2d.
    so yes its more than likely your cpu is holding your system back and by some margin especialy if your trying to play frostbyte 2 engine based games.
    yes the cpu is a good choice but as its a 4440 you dont need a z series board as you cant oc the 4440. better get an h series and save some money. over all though the switch to the i5 platform will release your gpu to show its full potential.


    I monitored my CPU and GPU on Battlefield 3 with HWiNFO program. The results were 98-100% of CPU core usage during the game and GPU core load was highest at 44%, but most of the time 20-35%.

    So i guess i will buy MOBO and CPU.
    Thank you!
  5. Yep - cpu is bottlenecking. Good luck!
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