Computer feels slow @ 4.9 GHz?

[i7hero]

My computer has been running at this speed for about 2 weeks and I've had some bios issues over the past couple of days that are now resolved but when playing a certain video game I don't notice my performance increase as I did before, I don't notice the difference between 3.5 GHz or 4.9 GHz. Any ideas? I even clocked my ram to 2 GHz

 

[maxiim]

A little more info than "cpu" and "ram" will be useful, and what kind of difference are you not noticing? The FPS or just fluidity?

 

[Saberus]

Could you post your full specs here?

And the CPU speed isn't going to have as much of an impact as the GPU speed on FPS.

 

[i7hero]

The game isn't running as smooth, I'm still getting maximum FPS without any signs of it dropping but it seems a little choppy and slower than before.
CPU: i7-4770k 4.9 GHz
GPU: GTX 660 2 GB OC
MOBO: Z87-G43

 

[CompuTronix]

i7hero,

In your previous thread: i7-4770k stable @ 4.8 GHz - http://www.tomshardware.com/answers/id-2190700/4770k-stable-ghz.html - we advised against pushing your Vcore higher than 1.3 volts due to the risk of accelerated electromigration.

At 4.9Ghz your Vcore is probably well above 1.4 volts, which is most likely overwhelming your CPU cooler. This could result in driving your Core temperatures high enough during your game to spike at Tj Max (100C), which will cause your CPU to throttle, and may explain your slow-down in performance.

Could this be the case? Also, have you perhaps turned off Hyperthreading in order to reach 4.9Ghz?

CT

 

[i7hero]

My Vcore is at 1.325 @ 4.9 GHz.
I have turned off Hyperthreading as I don't have an actual use for it (has been turned off since I purchased CPU - The video games I play do not support Hyperthreading)
Maximum temperatures while gaming + editing videos, ect that I've seen was 61 degrees celsius. I have not stress tested the computer at 4.9 to see if it's stable but I have not received a single BSOD, Black screen or freeze. The temperatures are low, the Vcore is average. The computer works fairly well and the boot time is seconds. Everything is working crisp except for a few games that started performing sloppily after the BIOS update. I understand it could be my GPU but the game isn't dependent on the GPU it's more of a CPU based game that requires a light GPU. The rig I have right now is currently overkill for two of the games I play. Ideas?

 

[CompuTronix]

Actually your Vcore is not "average"; it's on the edge of the high side, which is considered to be by many experts who've written overclocking guides, professionally test hardware and write articles, such as those here at Tom's, insist that 1.300 volts is the limit on Haswell. However, without stress testing, it's likely that you're truly lucky to have a 4770K sample that's in the upper 10% of the Haswell silicon that most people get, as you'd probably be at 4.8 with HT on.

Mine is in the upper 20% at 4.7 with HT on at 1.3 volts, de-lidded and lapped on both the IHS and cooler. The only way I can get to 4.8 is to turn off HT, and 4.9 is fairly promptly a blue screen, regardless of any combinations of BIOS settings.

Perhaps someone will chime in, but at the moment I don't have a suggestion for your "sloppy" graphics performance beyond your own thoughts toward a possible problem with your card. If I come across something I'll let you know.

CT