Have you disabled Cool & Quiet in the BIOS?MG42Maniac said:Umm its back up too 2.6GHz now and I didn't even have to change it backPerhaps it could be something to do with me starting to use 'stand by' instead of shut down?
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****San Diego 3700+ Steppings and Clocks- Retail and OEM****
- Thread starter Soul Rider
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As Dutch Guy says, it's more than likely Cool and Quiet in operation.
Are all of you getting ya 3700+ from OCuk, just bought one but from somewhere else & the damn thing wont even do 2.67ghz even at 1.55 volts.
The best i have got so far is 2.54 at 1.45v using 10.5x multi, as i am trying to keep my ram at 400mhz with the low default latency timeings.
The best i have got so far is 2.54 at 1.45v using 10.5x multi, as i am trying to keep my ram at 400mhz with the low default latency timeings.
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Cal_G said:
I have KACAE 0552FPBW and mine has hit 2.6GHz at 1.45V with an Artic Cooler. I would not let me boot into windows @ 2.8GHz so I might have reached my chips limit.
My 3700 does 3 GHz-3.1 GHz bench stable on air, which is all I have tried atm. Mine at 28GHz is also bench stable at 1.45v but not prime stable.
Mine is a KAB2E 0545CPMW, its not from OCuk it is from an American site because it was £50 cheaper
And I got it early jan this year.
Mine is a KAB2E 0545CPMW, its not from OCuk it is from an American site because it was £50 cheaper
And I got it early jan this year.
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MG42Maniac said:
Have you tried upping the CPU voltage?
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Soul Rider said:
No, not yet, what would you suggest, 1.5v?
I forgot to make a note of the steppings, i can get 2.67ghz using 1.65v.
My bios only goes up by .25 till you get to 1.55v then it jumps to 1.65v
I am gonna assume 1.65v is a no no though ?
How high should you let the cpu temp get before you should not oc anymore ?
My bios only goes up by .25 till you get to 1.55v then it jumps to 1.65v
I am gonna assume 1.65v is a no no though ?
How high should you let the cpu temp get before you should not oc anymore ?
No higher then 56C under load, The CPU won't respond to voltages over 1.65v unless it is frozen. And 1.65v is not for 24/7 usage unless you want to kill your CPU anytime soonSin-Tex said:I forgot to make a note of the steppings, i can get 2.67ghz using 1.65v.
My bios only goes up by .25 till you get to 1.55v then it jumps to 1.65v
I am gonna assume 1.65v is a no no though ?
How high should you let the cpu temp get before you should not oc anymore ?
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I rasied the volts from 1.45 to 1.475 and got this:
I've ran Prime 95 for 2 hours without error ( will do it for longer later) and I just ran 3DMark 2001 without errors. One strange thing is that there are people on the ORB with a 40k score using just a X850XTPE but granted their AMD64 CPU's are at like 3.2GHz. I only get 33.4k with my setup
I've ran Prime 95 for 2 hours without error ( will do it for longer later) and I just ran 3DMark 2001 without errors. One strange thing is that there are people on the ORB with a 40k score using just a X850XTPE but granted their AMD64 CPU's are at like 3.2GHz. I only get 33.4k with my setup
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MG42Maniac said:I rasied the volts from 1.45 to 1.475 and got this:
A Very Nice Piccie of My Overclock
I've ran Prime 95 for 2 hours without error ( will do it for longer later) and I just ran 3DMark 2001 without errors. One strange thing is that there are people on the ORB with a 40k score using just a X850XTPE but granted their AMD64 CPU's are at like 3.2GHz. I only get 33.4k with my setup
You should go as high as you want with your voltage as long as your temps are safe. A lot of people reguarly use 1.55v without issues. If you keep temps reasonable, voltage isn't too important.
3DMark 01 is so old that any modern graphics card can whizz through it. It is now primarily used as a indication of your hardware, as it is CPU and Memory limited, not GFX card. So if someone has their chip at 3.2Ghz, they will score higher than you. 3DMark 05 is good for testing your actual GFX performance.
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Cal_G said:
Built the machine this morning, running on a Asrock dual-sata2 with a scythe ninja and arctic silver 3. Prime been running for just over an hour. The board is limited to 1.40 vcore, 2.7ghz for this voltage is pretty good i reckon, errors out in prime at 2.75, probably needs more juice. Think the temps are ok? Definitely happy with the chip at this speed for the price.
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Soul Rider said:
I might try for 3.0GHz tomorrow. My only concern is that my motherboard is reaching 48C.
not sure of the stepping, will find out soon but can get 2640 (240x11) on stock volts, which is actually 1.29v on my mobo due to undervolting - thats with vcore +0.25v (undervolts a lot) super pi / si soft benchmarks stable - dont know about long term 100% Cpu use at that speed. The CPU was oem new off OcUk a week ago. I can get a screenshot of 2.72GHz on 1.29v but it locks under load. Maybe down to my RAM or proabably just needs more juice.
I just stick to 2430MHz on 220FSB due to a weak PSU taht I dont want to blow the system up and Geil Value RAM that Im sure is a weak link too.
I just stick to 2430MHz on 220FSB due to a weak PSU taht I dont want to blow the system up and Geil Value RAM that Im sure is a weak link too.
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Cal_G said:
I get similar results with my set-up. I have the same board and chip, different stepping tho, and I max out at 243FSB stable, start getting errors above that, but that's due to the voltage limitation on the board.
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Umm I seem to have hit a brick wall. I can't boot at 3GHz with 1.5V. Volts are the folllowing @ 2.8Ghz:
CPU: 1.475V
LDT bus: 1.20v
RAM: 2.66V
Chipset: 1.53V
Doers it need more juice or have I reched my chips limit?
CPU: 1.475V
LDT bus: 1.20v
RAM: 2.66V
Chipset: 1.53V
Doers it need more juice or have I reched my chips limit?
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MG42Maniac said:
These 3700 seem to need quite a bit more jucie once you are going past the 2.7-2.8 region. The best way to find out if your having a Volts issue, and not that you have forgotten to turn down the HT multiplier again, or that you haven't lowered the ram divider again, is to adjust the FSB up in 1Mhz increments. Then run a 32MB Superpi. When you get the error message - The was a rounding error or some such, you need more juice. Turn up the volts, without increasing the overclock, until the error disappears. The go up again.
Note this will only make your machine SuperPi stable, when you find you can't make it stable with the maximum number of volts you are willing to give it, throttle back the overclock until it is stable. Then you can begin making it Prime95 stable.
Just make sure you check your current memory speed and ht multiplier, and turn down if neccesary.
Most of these chips need around 1.55v for 3Ghz.
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hi , what do you think about mine
it is a KAB7E 0547 CPMW
it is a KAB7E 0547 CPMW