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Any noticable difference between 4.5ghz and 4.8/5.0ghz?

post #1 of 11
Thread Starter 
I'm waiting for ivy bridge socket 1155 processors to come out so in the meantime I've been overclocking my sandybridge 2600k. Currently I have it at 4.5ghz HT on and no turbo boost, but when I set it any higher, I end up crashing. So is there any noticeable speed difference when gaming or multitasking from 4.5ghz to 4.8-5.0ghz?

2600k - 4.5GHZ
GTX 580- 900/1800/2100 (Might overclock to 950/1850/2150 since I don't have room for sli)
16GB DDR3 1600mhz 9/9/9/24
post #2 of 11
Why do you crash when you pump the Ghz? Did you put more vcore (CPU voltage) ?
post #3 of 11
Honestly probably not in your case. I mean it wouldn't be liked one 580 pushing only 1920x1080 is getting bottlenecked by the cpu. 4.5Ghz stable is quite nice and pushing it further without the right cooling wouldn't be a good idea to begin with.

You wouldn't see to much more I don't think. You may see a small boost but not some magical increase. It's already running very well. Though hitting 5 is always nice tongue.gif
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post #4 of 11
Thread Starter 
Quote:
Originally Posted by TinDaDragon View Post

Why do you crash when you pump the Ghz? Did you put more vcore (CPU voltage) ?

I usually don't touch the vcore, just keep it set to auto. It auto sets to 1.308 I think. No idea why it crashes, probably not enough vcore, but I end up getting a blue screen of death and it requires windows startup disk to repair.
post #5 of 11
Thread Starter 
Quote:
Originally Posted by hellboy_101 View Post

Honestly probably not in your case. I mean it wouldn't be liked one 580 pushing only 1920x1080 is getting bottlenecked by the cpu. 4.5Ghz stable is quite nice and pushing it further without the right cooling wouldn't be a good idea to begin with.
You wouldn't see to much more I don't think. You may see a small boost but not some magical increase. It's already running very well. Though hitting 5 is always nice tongue.gif

Heh. I have an asetek (h50 is the retail sale name I think) watercooling with push/pull airflow on the cpu. One side fan, One top fan, one drive bay fan, GPU set to 65-75% always, the two fans for push/pull in the back, an external fan on max, house cooler always at 70F, and I open the windows at night. Hehe, gets very cold at night. Also have a headset so sound doesn't bother me.
post #6 of 11
Quote:
Originally Posted by problemgaming View Post

I'm waiting for ivy bridge socket 1155 processors to come out so in the meantime I've been overclocking my sandybridge 2600k. Currently I have it at 4.5ghz HT on and no turbo boost, but when I set it any higher, I end up crashing. So is there any noticeable speed difference when gaming or multitasking from 4.5ghz to 4.8-5.0ghz?
2600k - 4.5GHZ
GTX 580- 900/1800/2100 (Might overclock to 950/1850/2150 since I don't have room for sli)
16GB DDR3 1600mhz 9/9/9/24

Up to 4.5GHz is easy with Auto options and minimal mucking around.

Past a 45x multiplier you will need to start raising other things like VCCIO (or VTT), QPI voltage (both to around 1.1v), and set Enable PLL Overvoltage (or Vdroop Control or something similar) to enabled.
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post #7 of 11
Thread Starter 
Thanks for the info. If I won't notice a difference from 4.5 to anything higher, I won't worry about it. But I will do my research on it so when I do want to go higher. Right now I don't have room in my case for sli 580s due to the fact my killer 2100 card is using the bottom pci slot and EVGA cards are huge, but I want to use 3 monitors in the future. I'm debating on selling my EVGA 580 and get a 590 or mars II or somehow make room for sli.
post #8 of 11
on benchmarking, maybe you will see increase on numbers, but in the real world application/usage, not noticeable at all. smile.gif
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post #9 of 11
The only noticeable increase is your e-peen and that's about it.I'd say the efficiency of OC drops when it reaches the 4.0-4.2Ghz mark unless doing really CPU extensive work so probably not? No experience with 5Ghz though.
    
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post #10 of 11
Thread Starter 
Heh, had to lower my clock to 4.4ghz cause I just BSOD at 4.5. Said something about disabling memory shadowing or caching but couldn't find anything about it in bios. Something to do about one of the cores lost its speed.
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