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post #8191 of 10697
Hi guys.

HT is a must for i7 chips. Don't merely go for clocks. CPU's aren't in that fashion trend and haven't been for some time, or we would be seeing 5ghz chips sold on market by now. Having your clock 300-400mhz slower but having HT on will provide you higher framerates in things like Battlefield 3 and other games which appropriately use multithreading. In games which only use single core, the higher clock would be an advantage (older games only really now.) However your Intel chip should not struggle at all over 4Ghz.

I also advise people unless its for benching, to leave the low power states and throttling on. Even more so if its for daily use. If your overclock is stable it should be able to boost itself at the times needed, and without crashing. To me this is stable. This means that if you run a 1.4.-1.5v+ vcore, your chip will actually get a break from the volts/watts coming through. This dramatically extends the life of your CPU. After paying £200 for a chip this is what you want. IT WILL STILL PERFORM THE SAME AT THE TOP END.
 
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post #8192 of 10697
Quote:
Originally Posted by chang87 View Post

What I meant was, it goes to the windows splash screen but after a second ot two, it locks up. And I need to do a hard reset for the pc to turn off and boot up again.
Well, I might beleive that this chip is definitely power hungry. Tsk! mad.gif
Seems ive hit a multiplier wall? Not sure though. *sigh*

You can bump the voltage to 1.4 just to see if it improves. If yes then you've definite got one hell of a voltage gobbling chip.

A positive note though, you will not likely to utilise the full power of 4.3 ghz on daily use anyway. Gaming for instance, your gpu is likely to be the limiting factor. Even when you do things like file transfer, it's almost always the hard disk rpm that's bottlenecking the speed.
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post #8193 of 10697
Quote:
Originally Posted by Sashimi View Post


You can bump the voltage to 1.4 just to see if it improves. If yes then you've definite got one hell of a voltage gobbling chip.
A positive note though, you will not likely to utilise the full power of 4.3 ghz on daily use anyway. Gaming for instance, your gpu is likely to be the limiting factor. Even when you do things like file transfer, it's almost always the hard disk rpm that's bottlenecking the speed.

Already tried the 1.4v setting before. and guess what? NO LUCK! Damn! mad.gif

But imma try it again sometimes. Im about to throw in the towel w/ my OC and might as well stick w/ 4.3Ghz.

Well, you have a point there w/ the cpu utilization thingy. +1 for that! thumb.gif
Edited by chang87 - 4/5/12 at 3:42am
post #8194 of 10697
Quote:
Originally Posted by chang87 View Post

Already tried the 1.4v setting before. and guess what? NO LUCK! Damn! mad.gif
But imma try it again sometimes. Im about to throw in the towel w/ my OC and might as well stick w/ 4.3Ghz.
Well, you have a point there w/ the cpu utilization thingy. +1 for that! thumb.gif

Lol thanks mate n good luck. If upping it to 1.4 n you still can't get pass the windows load screenthen maybe I was wrong about the chip being power hungry. Let us know how it goes. thumb.gif
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post #8195 of 10697
Quote:
Originally Posted by Smo View Post

I'm also trying to think which setting on your board is the VRM Frequency. Most stable SB overclocks have this set at 350. I'm assuming on your board it's the 'Core Current Limit'.
VRM switching frequency and core current limit are certainly not the same thing.

VRM switching frequency is the frequency (in kHz) at which the MOSFETs in the VRMs switch at. 250/300kHz is about the minimum for any board. A lot of boards will not have the option to alter this. A higher frequency will increase the transient response of the VRMs meaning that vcore will have lower ripple under load.

Core current limit sets the maximum amount of current that the board will supply to the chip. Above this limit, the board will throttle the CPU or otherwise do something (such as stop supplying vcore) in order to protect the VRM circuitry from damage. The current will normally be under 100A at full load unless you are running prime95 above 5GHz on 8 threads or something similar.
Quote:
Originally Posted by chang87 View Post

And most likely the VRM frequency might be the Core Current Limit on AsRock mobos but its max is 300.

Please read above. Setting the current limit to around 130A will not limit your overclock but will mean that your board should protect itself if vcore was to be shorted to ground.
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post #8196 of 10697
@sashimi

Btw, can you name some everyday applications that utilizes the 4.3Ghz speed? Any idea?

Like what games and etc utilizes it? Cuz what I usually do on my pc is merely gaming, and light load stuff like browsing, etc...
post #8197 of 10697
Quote:
Originally Posted by chang87 View Post

Hi Guys,
I need help w/ getting my 4.3Ghz OC stable. It seems that when I run the "Custom 1792" test in Prime95, my worker 3 bails out on me.
Current BIOS and CPU-Z Screenshots are attached below while running the "Custom 1792" test in Prime95.
337
450
450

So, do I need to change anything to make it stable? Any help will be greatly appreciated.
Note:
I cant go past 4.3Ghz and I dont know why. Windows wont boot.
TIA

Change:

Additional Turbo Voltage to 0.004 V

CPU load line calibration to lvl 2 (this is in my opinion ur problem)

Also set Vcore to - 0.020 V and try to boot to 4.5 ghz with PLL overvoltage disabled.

U should manage to boot... from there u can try to go lower on Vcore...
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post #8198 of 10697
Quote:
Originally Posted by Sashimi View Post

From my (unverified) observation there are more bum 2500k chips out there than bum 2700k chips, so chances are you might get a crappy I5 should you went for it.

Yeah, exactly. I read from various places that the 2700K is a binned 2600K, which may or may not be the case. It's all luck of the draw anyway and some of the 2500Ks in the spreadsheet blow the 2700Ks out of the water as far as overclocking potential, but the spreadsheet is a small sample size and you never know how much less vcore every chip on there could have gotten away with. Plus, everyone's cooling situation is different. In any case, the 2MB extra cache probably doesn't hurt and if I ever feel the need to enable HT then the option is always there.
post #8199 of 10697
Quote:
Originally Posted by Rops84 View Post

Change:
Additional Turbo Voltage to 0.004 V
CPU load line calibration to lvl 2 (this is in my opinion ur problem)
Also set Vcore to - 0.020 V and try to boot to 4.5 ghz with PLL overvoltage disabled.
U should manage to boot... from there u can try to go lower on Vcore...

I will try these settings later when I get home. thx for the help thumb.gif
post #8200 of 10697
Quote:
Originally Posted by ARandomOWl View Post

VRM switching frequency and core current limit are certainly not the same thing.
VRM switching frequency is the frequency (in kHz) at which the MOSFETs in the VRMs switch at. 250/300kHz is about the minimum for any board. A lot of boards will not have the option to alter this. A higher frequency will increase the transient response of the VRMs meaning that vcore will have lower ripple under load.
Core current limit sets the maximum amount of current that the board will supply to the chip. Above this limit, the board will throttle the CPU or otherwise do something (such as stop supplying vcore) in order to protect the VRM circuitry from damage. The current will normally be under 100A at full load unless you are running prime95 above 5GHz on 8 threads or something similar.
Please read above. Setting the current limit to around 130A will not limit your overclock but will mean that your board should protect itself if vcore was to be shorted to ground.

Cheers for clearing that up dude!

After work today I'll make another post about my attempt at overclocking my 2600k and that damned 124 BSOD.
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