SLI GTX 680 or upgrade CPU/MB from Lynnfield?

Sprinx

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Mar 26, 2009
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That pretty much describes my question. I can get an additional EVGA GTX 680 SC to match the one I have for about $300. But my CPU is also aging - Q3 2014 will be that generation's 5 year birthday. However, it seems to be keeping up.

I have a Corsair HX750W 750 watt power supply, with single 12 V rail. It should be able to handle it, if only just. With a Kill-a-Watt meter at the wall, I'm still under 450 W on high load (running 3DMark).

Current specs:
Intel i5 750 (Lynnfield) overclocked to 3.6 GHz.
EVGA P55 SLI motherboard
EVGA GTX 680 SC (2 GB RAM)
8 GB (2 x 4GB) GSKILL 2166 MHz DDR3 RAM
Mushkin CHRONOS 120 GB SSD
2 x 2 TB hard drives
1 x 1 TB hard drive
Blu-ray burner

BenQ XL2420t 120 Hz nVidia 3D vision gaming monitor (1920 x 1080)

I've seen Sandy Bridge come and go, Ivy Bridge come and go, and now Haswell, and from looking at benchmarks it seems that they stopped improving gaming at Sandy Bridge. I couldn't care less about the built-in Intel HD graphics.

The main point is, I see no reason to get a new CPU. Even in BF4 or Titanfall, the CPU usage doesn't go above 50%. But I still have room before i hit 120 fps, which the extra GTX 680 could help me get. I am definitely getting some framerate drops in Titanfall, but this seems to be plaguing everyone.

I'm aware that my current motherboard is only PCI-e 2.0 compliant, and when I insert another PCI-e card my speed will drop to x8. But does this really matter that much in the real world?

Am I better off waiting until Skylake for CPU/MB? Or would I see a marked improvement in an i5 4670K in gaming?
 

Sprinx

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Mar 26, 2009
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Whenever I upgrade, I'll probably just keep my old MB / CPU and use it as a server of some kind.

Logic is telling me that I'm fine with my current CPU, but I guess my head is just thrown off by the fact that it's been 4 years since I bought my i5. I was running SLI 9800 GTX+ at the time, for crying out loud.
 


Oh! then better to wait and get new motherboard and CPU, 350~400$ should be enough for i5 (K version) and some mid range Z97 SLI capable motherboard, your GTX-680 is a good card for games and I think you don't have to buy second one for SLI (IMO)