Overclocking making computer appear slower?

[nightmarevoid]

I've recently decided to overclock my CPU further than the automatic overclocking software on my motherboard had already had it. After I bought my first water cooler a couple years ago, a corsair h60, I decided to overclock my i5 2500k. I'd never tried it before, so I looked in my mobo's manual and found a setting on my asus p8p67 motherboard which would automatically overclock my chip. I tried it and it boosted from 3.4 GHz to 4.2GHz. Now that I'm confident enough to try overclocking myself, I went into the bios and bumped it up to 4.3 GHz and allowed it more power, just to see how well it would work. I got into windows 8.1 just fine, and tested the system by playing assassin's creed 4 (I figured it would give me a better real world clue as to my success) and the game ran fine at mostly highest graphics for quite a while and prime95 didn't cause a crash. However, after trying to play crysis 2, I noticed something bizarre. Crysis was stuttering unimaginably bad. even the loading screen looked like it was being streamed from a horribly slow internet connection. It was at the point where it was unusable. A day later my girlfriend came over, and while trying to use a program called s3pe to compress custom content for the Sims 3, she noticed that my PC was taking incredibly long to accomplish the task. I work in IT, and my boss and I agree that there's something wrong with the clock cycles of the CPU and the ability for it to fetch data. Today when I go home i'm going to check the bus ratio and ram timings/speed to see if I can add stability. Does anyone have any input to offer, maybe someone who's had the same problem and has solved it? Any help is appreciated. thank you.

 

Build:

i5 2500K @ 4.3 GHz and allowed to use %120 available power

Corsair H60

Asus P8P67 motherboard

apevia iceberg 680W psu

16GB Kingston Hyper X memory CL9 @ 1600MHz

Gigabyte windforce GTX 780 GHZ edition

 

[William12h]

The OC is most probably giving you less performance since you OC it so much. 

 

Download PerformanceTest. Test with you default Clock speed and then your OC speed. 

 

For Example, on my CPU, its 3700Mhz default. I can OC to 4500Mhz but it performace less then my default.  But i managed to find that 4100Mhz performs better than any other clock speed i can get.

 

Link http://www.passmark.com/products/pt.htm

Edited July 14, 2014 by William12h

[DarthSlater77]

every piece of silicone is diffident. Even among a group of the same model CPU. for example The FX-9590 is just a factory overclocked 8350 but in the process of making the 8350 AMD set aside the best pieces of silicone, overclocked them and sold it as the 9590. long story short every CPU has its sweet spot where it runs best. to find that sweet spot only overclock in small increments until things become unstable. when thigs become unstable back it off one click and your there. Like you mentioned before it may be a timing issue between your memory and CPU. try increasing the clock speed and voltage of your memory and see if that does anything for it. If not you have reached your top end.