My PC performance at the moment is pretty good, however, I want it to be better. I can run a heavily modded Skyrim at an average of 40-50 fps, but I can't play with my ENB turned on. As soon as I turn it on it drops to 10-20 fps, which is unplayable really. Also, I play at a 2560x1440 resolution. This is what I have at the moment;
Motherboard: Gigabyte GA-880GA-UD3H
Processor: AMD Phenom II x6 3.2GHz
Graphics Card: Nvidia GTX 570 SOC
RAM: G.Skill RipJawsX 4GB DDR3 1600MHz (x4)
PSU: XFX Pro 850W
Main Solid State Drive: Corsair Force GT 120GB
Hard Drive #2: Seagate Barracuda 1TB 7200RPM
Hard Drive #3: Western Digital 2TB
Hard Drive #4: Western Digital 500GB
Case: Cooler Master CM-690 II Nvidia Edition Advanced Dominator
Mouse: CM Storm Sentinel Advance
Keyboard: Mionix Zibal 60
Monitor: Hazro HZ27WC 27”
Speakers: Logitech Z323
I have been wanting to switch my motherboard and processor for a while now, so I was thinking of getting the ASRock Z77 Extreme4 M and the i5-2550k 3.40GHz and overclocking it, though I've never overclocked before
I've also thought about getting SLI for a while, and that was one reason for picking that motherboard. It's just a shame that Overclockers don't sell the model of graphics card I have at the moment, as I would prefer the have the exact same one. But I wouldn't be getting another graphics card for a while anyway, so we'll see.
I think just upgrading the motherboard and processor would give a good performance boost but as I'm not 100% sure on how much I thought I would come to you guys for some advice. What do you all think? Could I get better performance for less money with something else?
Motherboard: Gigabyte GA-880GA-UD3H
Processor: AMD Phenom II x6 3.2GHz
Graphics Card: Nvidia GTX 570 SOC
RAM: G.Skill RipJawsX 4GB DDR3 1600MHz (x4)
PSU: XFX Pro 850W
Main Solid State Drive: Corsair Force GT 120GB
Hard Drive #2: Seagate Barracuda 1TB 7200RPM
Hard Drive #3: Western Digital 2TB
Hard Drive #4: Western Digital 500GB
Case: Cooler Master CM-690 II Nvidia Edition Advanced Dominator
Mouse: CM Storm Sentinel Advance
Keyboard: Mionix Zibal 60
Monitor: Hazro HZ27WC 27”
Speakers: Logitech Z323
I have been wanting to switch my motherboard and processor for a while now, so I was thinking of getting the ASRock Z77 Extreme4 M and the i5-2550k 3.40GHz and overclocking it, though I've never overclocked before

I've also thought about getting SLI for a while, and that was one reason for picking that motherboard. It's just a shame that Overclockers don't sell the model of graphics card I have at the moment, as I would prefer the have the exact same one. But I wouldn't be getting another graphics card for a while anyway, so we'll see.
I think just upgrading the motherboard and processor would give a good performance boost but as I'm not 100% sure on how much I thought I would come to you guys for some advice. What do you all think? Could I get better performance for less money with something else?