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***The Official Core i5 Overclocking Thread***
- Thread starter easyrider
- Start date
They're some pretty nice temps PCZ, what I dont understand is how I can be running warmer than you with the following specs:
[email protected]
LLC on
1.29v
Megahalem (2x SFF21F)
MX-3
Mine's reaching 72C in IBT after 5 runs on high. Remounted and no change.
[email protected]
LLC on
1.29v
Megahalem (2x SFF21F)
MX-3
Mine's reaching 72C in IBT after 5 runs on high. Remounted and no change.
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I've got a cool runner thats for sure.
Wish my I7's would load at those temps.
Maybe there has been a change to the newer chips how old is yours. ?
Heatsink i am using isn't exactly small though, easily bigger than a true.
I haven't got this board in a case yet, running out in the open will help the temps.
Expect when boxed up with a hot VC or 2 temps will read higher
Heating is on in the house now and the room is quite a bit warmer.
Near 20C ar a guess.
Temps have increased a bit.
Houston we have a problem !
More tweaking required
14 hrs of small fft's, no problem
Failed after 3 mins of IBT.
Wish my I7's would load at those temps.
Maybe there has been a change to the newer chips how old is yours. ?
Heatsink i am using isn't exactly small though, easily bigger than a true.
I haven't got this board in a case yet, running out in the open will help the temps.
Expect when boxed up with a hot VC or 2 temps will read higher
Heating is on in the house now and the room is quite a bit warmer.
Near 20C ar a guess.
Temps have increased a bit.
Houston we have a problem !
More tweaking required
14 hrs of small fft's, no problem
Failed after 3 mins of IBT.
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.I normally keep a window or 2 open because the heat from all the PC's i have here turns the house into a bread oven.
Last night was very cold though and i overdid the ventilation a bit.
IBT is failing at 4.2 and passing at 4,0.
I will tweak a bit more but i think IBT stable 4.2 isn't going to happen.
Edit: Upping the vcore has fixed the instability running IBT at 4.2.
It's higher than i would like and the temps are up quite a bit.
Will do a few runs lowering the vcore to see what i can get away with.
Last night was very cold though and i overdid the ventilation a bit.
IBT is failing at 4.2 and passing at 4,0.
I will tweak a bit more but i think IBT stable 4.2 isn't going to happen.
Edit: Upping the vcore has fixed the instability running IBT at 4.2.
It's higher than i would like and the temps are up quite a bit.
Will do a few runs lowering the vcore to see what i can get away with.
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Jason
Yes mostly auto.
Manual settings
Multi 20x
Turbo disabled
BCLK 211
LLC enabled
VCORE 1.4125
RAM 1.640
IOH CORE 1.24
I upped the IOH core not to keep the CPU stable, but to ensure that IO data wasn't corrupted when i went past 200 BCLK.
RAM multiplyer X8
The Geils are rated to 2133mhz but to do this you need to use CL2 and loose timings
Better to run 8x and CL1 7,7,7,24
Bios actually sets 7,7,7,24 automatically reading the settings from the memory.
Yes mostly auto.
Manual settings
Multi 20x
Turbo disabled
BCLK 211
LLC enabled
VCORE 1.4125
RAM 1.640
IOH CORE 1.24
I upped the IOH core not to keep the CPU stable, but to ensure that IO data wasn't corrupted when i went past 200 BCLK.
RAM multiplyer X8
The Geils are rated to 2133mhz but to do this you need to use CL2 and loose timings
Better to run 8x and CL1 7,7,7,24
Bios actually sets 7,7,7,24 automatically reading the settings from the memory.
To satisfy your curiosity I'll enable all the power saving features and see what happens.
Now how to test.
Guess i start and stop P95 or IBT a few times.
Idle a bit, cane it some more and see if anything breaks.
Whilst browsing and listening to MP3's.
Now how to test.
Guess i start and stop P95 or IBT a few times.
Idle a bit, cane it some more and see if anything breaks.
Whilst browsing and listening to MP3's.
Enabling C1E or EIST is a no go.
Soon as the multi drops to 9x windows freezes up.
CIE enabled stops me even getting into windows.
Would have to have different OC settings to run with the power saving features enabled.
As to shortening the life of the chip, yes it probably will.
However a year or so down the line i wont care.
Chip will most likely be moved on to a friend or relative and be running at a far more modest OC.
Soon as the multi drops to 9x windows freezes up.
CIE enabled stops me even getting into windows.
Would have to have different OC settings to run with the power saving features enabled.
As to shortening the life of the chip, yes it probably will.
However a year or so down the line i wont care.
Chip will most likely be moved on to a friend or relative and be running at a far more modest OC.
Quick thing i'm pondering over. I have my I5 clock to 3.8ghz. I run prime blend overnight for 10 hours and is stable max temp 60C. Problem is minimum vcore i can get away with is 1.35. Any less and it's not stable(has always failed on one of the cores when i get up in the morning). 4ghz i couldn't get stable with 1.43vcore, so i decided not to bother pumping any higher for a small increase in performance.
I've noticed many of you getting higher overclocks then me with less voltage. Is there something i'm missing?
I've disabled speedstep, set multi x 20, bclk x 190 put in the normal ram settings which seem fine and left everything else as default.
I don't mind not hitting 4ghz, but i wouldn't mind getting the vcore down more for the overclock im running or am i stuck using 1.35v?
Also forgot
Turbo disabled
I've noticed many of you getting higher overclocks then me with less voltage. Is there something i'm missing?
I've disabled speedstep, set multi x 20, bclk x 190 put in the normal ram settings which seem fine and left everything else as default.
I don't mind not hitting 4ghz, but i wouldn't mind getting the vcore down more for the overclock im running or am i stuck using 1.35v?
Also forgot
Turbo disabled
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I bought the OC_Bundle (I know nothing about OCing) but it was failing prime on core 3.
Support advised upping the vcore two notches which takes it to 1.36 but this didn't help.
The other thing they had me to do was reduce the memory controller from 8 to 6 which I'm testing right now.
I'm 50mins into prime and no error as yet, what is the downside of changing the memory controller to 6 from 8.
Also if it remains stable should I put the vcore back as it was and test again?
Support advised upping the vcore two notches which takes it to 1.36 but this didn't help.
The other thing they had me to do was reduce the memory controller from 8 to 6 which I'm testing right now.
I'm 50mins into prime and no error as yet, what is the downside of changing the memory controller to 6 from 8.
Also if it remains stable should I put the vcore back as it was and test again?
You can drop the vcore and test again.
Leave the memory at 6x and find out how much vcore your chip needs to run prime stable.
Also use IBT, set to high, minimum of 20 runs.
Intel Burn Test.
Do not be surprised if you fail this test at Prime stable settings.
Anyways when you are stable with the memory at 6x, increase to 8x.
Likely you will start to see errors again, increase VTT until they go away.
Start at 1,275 and go up or down from there as necessary.
Also you can increase memory voltage to 1.640, don't exceed that though.
Don't panic too much if your bios shows the VTT voltage as pink, just dont go into the red.
If you get as far as 1.335 and you aren't stable with the memory at 8x give up and back it down to 6x.
Also you might have performance settings of Standard, Turbo and Extreme, try Standard if Turbo is default.
Leave the memory at 6x and find out how much vcore your chip needs to run prime stable.
Also use IBT, set to high, minimum of 20 runs.
Intel Burn Test.
Do not be surprised if you fail this test at Prime stable settings.
Anyways when you are stable with the memory at 6x, increase to 8x.
Likely you will start to see errors again, increase VTT until they go away.
Start at 1,275 and go up or down from there as necessary.
Also you can increase memory voltage to 1.640, don't exceed that though.
Don't panic too much if your bios shows the VTT voltage as pink, just dont go into the red.
If you get as far as 1.335 and you aren't stable with the memory at 8x give up and back it down to 6x.
Also you might have performance settings of Standard, Turbo and Extreme, try Standard if Turbo is default.
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Stock cooler with stock Thermal Pad (!) - Gigabyte P55-UDR3 motherboard. I doubt this is stable (Didn't try anything, and the heat at idle was 58 deg. But for a stock system this is an incredible chip considering the default gives you 2.66Ghz. Takes me back to the Thunderbird Athlon days pushing a 1.333 past 2Ghz!
Grrr - have to work out howw to add a pic
But 4320Mhz is pretty good for stock 
EDIT:
Grrr - have to work out howw to add a pic
But 4320Mhz is pretty good for stock EDIT:
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Jokester
I'll run a blend test for a few hours and post up a screenie later.
I have work for the PC to do so don't expect 8hr+
BTW
The math libraries in P95 are used also used in LLR and PFGW which i use to find primes.
Aydon
If you stress test at your current OC you better have the Fire Brigade on standby
I'll run a blend test for a few hours and post up a screenie later.
I have work for the PC to do so don't expect 8hr+
BTW
The math libraries in P95 are used also used in LLR and PFGW which i use to find primes.
Aydon
If you stress test at your current OC you better have the Fire Brigade on standby