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it's been a while, do you think 1.44v is enough?

post #1 of 11
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i had my 1090t cpu oc'd at 4.0ghz for a while, but the temps were running a little high, so now i lowered it to 3.9ghz.

it's been a while since i read and studied how to overclock my cpu, and i kind of forgot a lot of it, but i have a question, do you think 1.44v (idle) is good to start and test now to see if it's stable? what starting point do you suggest (for voltage) for my 3.9ghz overclock?

thanks
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post #2 of 11
you only increase voltage when you need it. you don't start at a random voltage as a guess. just start at 1.4v and keep increasing one notch until it's stable
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post #3 of 11
Here's a real good thread to help refresh your memory http://www.overclock.net/amd-general...ing-guide.html it has a lot of good info, plus gives you a path to follow.

For a 3.9 try starting low, maybe 1.37v and run ITB, if you get a BSOD raise the Vcore a couple bumps. Repeat, till you can pass 5-10 runs. Than go for a 4.0GHz. From what I've seen many can reach 4.0 with only 1.38-1.41v depending on ambient (mine would run at 1.4 with a Scythe Mugen). The whole idea is to use a minimum voltage increase to keep the temps down.

Once it passes ITB than try a 12 hr run of prime95 on "Blend". After that you could try using the ref clock at 250MHz and CPU multiplier of 16x for a 4.0GHz but you'll need to study the link above for more details on how to do this.

Work with only one area at a time. 1st CPU by itself, than 2nd, Ref Clock. Combined the two (and stabilize) and than 3rd, work in a nice 3000MHz NB Freq (stabilize), and finally 4th raise the dram freq. At this point you'll want to be able to pass 24 hrs of prime95.

In the end these would be a reference only (your settings may differ slightly)
250MHz x 16x = 4.0GHz with 1.38-1.41v Vcore (max Vcore is 1.55v)
3000MHz NB Freq with 1.35 to 1.4v for CPU/NB voltage (Max CPU/NB voltage is also 1.55v)
2000HT Link Speed +/- 100MHz with HT voltage at stock/auto
1672MHz Dram Freq (assuming you have 1600MHz Dram)with timings manually entered along with stock Dram voltage (which you may need to increase slightly, Make increases of .05v till stable) also manually entered.
Be sure to have CPU Load Line Calibration on full (same with CPU/NB LLC).
Disable Turbo Core and any OC Utility options.
And if you use "Offset Voltage" instead of "Manual" you'll still have the option to enable Cool & Quite.

When testing with prime95,
A BSOD usually means a lack of Vcore,
If you get a "Worker Has Failed" error this is usually a lack of Dram Voltage or CPU/NB Voltage.

If you'd like/need any help feel free to PM me. (I also have a list of settings to help setup the bios if you need help with that).
Edited by The Sandman - 6/4/11 at 11:13pm
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post #4 of 11
ooo yeah, It's all good, it's safe upto 1.55V on the CPU VCCore and about 1.45V for CPU-NB
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post #5 of 11
Quote:
Originally Posted by Atomfix View Post
ooo yeah, It's all good, it's safe upto 1.55V on the CPU VCCore and about 1.45V for CPU-NB
cpu-nb is also okay up to 1.55v
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post #6 of 11
Quote:
Originally Posted by fazio93 View Post
cpu-nb is also okay up to 1.55v
I personally woulden't run the CPU-NB at 1.55V for 24/7
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post #7 of 11
You shouldnt have an (idle) voltage and a load one at all, if your vcore is dropping at all during load your pytting too much through your vrms and theyre getting too hot. I have an 8+2 phase and my vcore used to droop all over the place at 1.475, thrn i put heatsink on them and a little fan and i can put 1.6 in it rock solid

Edit: shouldnt*
Edited by Rommel - 6/5/11 at 10:40am
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post #8 of 11
Quote:
Originally Posted by Rommel View Post
You shouldnt have an (idle) voltage and a load one at all, if your vcore is dropping at all during load your pytting too much through your vrms and theyre getting too hot. I have an 8+2 phase and my vcore used to droop all over the place at 1.475, thrn i put heatsink on them and a little fan and i can put 1.6 in it rock solid

Edit: shouldnt*
you couldn't be more wrong. vdroop is completely normal. some boards have more vdroop than others. asus boards in particular are known to have a bit more vdroop. from idle to load, mine goes from 1.452v to 1.404v.
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post #9 of 11
Quote:
Originally Posted by fazio93 View Post
you couldn't be more wrong. vdroop is completely normal. some boards have more vdroop than others. asus boards in particular are known to have a bit more vdroop. from idle to load, mine goes from 1.452v to 1.404v.
My load voltage is 1.44 with an idle voltage of 1.3V And that's with a Crosshair IV
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post #10 of 11
Quote:
Originally Posted by Atomfix View Post
My load voltage is 1.44 with an idle voltage of 1.3V And that's with a Crosshair IV
you have load line calibration on i'm guessing?
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