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Poor performance with SLI on MW3

Try to keep the keep the criticism to a min please. I did not have the money to upgrade to a newer processor so I was attempting to save money using existing CPU and parts.

I bought a evga nforce 750i sli board and another gtx 260 for sli and 2 x 2 ddr2 Dual channel corsair xms2 performance ram. Unfortunately when I was finishing a degree my last computer quit working, and I did not have the time to build a system with 2 weeks of classes left so I bought a HP with the stupid pre-installed OS headache. In changing everything I lose my Vista resorting to win XP 32 bit. I know lots of people who don't work with on computers everyday love XP. Applications on XP were always crashing on me so I hated it. I ran Vista for 4 1/2 years without a reformat until recently when I wiped everything trying to remove a pretty nasty malware.

After finally getting everything patched I install MW2. Running at optimal settings I cap out at 85 but get some severe Frame drops at times.

750i sli
850 w sli read corsair psu
Intel duo core 2 quad Q6600
4 gb dual channel (2 sticks) ram
2 x SATA hdd running in non raid. Board on XP requires floppy for raid setup
2 x GeForce gtx 260s (one is super clocked factory)

I'm running at 1900 x 1200. Yes I've searched the forums, and yes I can turn down the graphics to lower settings. I would have thought I'd get better performance with 2 cards with higher settings. I am running on a CRT though. Cuda is disabled and physX off.

I bought win7 64 bit today, but came here first before I break the seal. Should I upgrade to Win7? Swap to a LCD? Or do I have another option besides overclocking CPU or GPUs? I'm running it in an Antec 300 case with lots of fans so I should be able to overclock some. But would prefer not to.
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  1. I suggest you to OC your CPU. That CPU in stock clock is kinda low 2.4ghz. I think its the limiting factor.
  2. I'll try that. Would win7 64 bit, be better than 32 bit XP?
  3. No. It would allow you to use more RAM, which would be nice, but I agree with acerace that the CPU is probably the bottleneck. 64 bit doesn't directly increase performance.
    If you don't OC the slower GPU, they'll both run at the lower speed.
  4. $285 and up for a 3ghz quad. Not buying one just looking. Are these people nuts? LOL
  5. Thanks for the help. I'll post my results in a bit.
  6. Oh yeah, they just jack up prices on some out-of-production chips.
    An X4 955 would be nice, a 2400 would be better and a 2500K would have you set for years.
  7. Not sure of the CPU code, but the I7 I was dreaming for which I don't see in new egg as I speak was a step below the black box gamer extreme the latter being $1k at the time. Would be nice but money is too tight right now. The gulftowns I see are 500+ add cost of ddr3 ram and motherboard not happening.
  8. You do have to be careful when buying a cpu and match the socket on the motherboard. You usually end up changing everything and for $390 you can get all three and have really top notch performance even with the two GTX 260's that you have.
  9. Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 3000 BX80623I52500K

    ASRock Z68 Extreme3 Gen3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
    $124.99 and a $10 rebate for $114.99

    CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMZ8GX3M2A1600C9B

    If you were to update your Pc with these components and then load the Windows 7 64bit on it your performance would then be limited to the video cards.
  10. Best answer
    Make sure you have a good cooler before overclocking :)
  11. Best answer selected by Quarkstar.
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