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is this voltage ok on my 940?

839 Views 27 Replies 6 Participants Last post by  Zeifer
for the past two days i've been trying to see how much i can get out of my 940BE. So far by just upping the multiplier and Vcore i think i've found the max clock i can get. I've tried upping the HT but it seems to not go as high as i would like it.

3.7ghz 18.5x200 1.57v under load. However in the bios it is set to 1.58 and in windows when idle its 1.6v.

I don't seem to have any problems with temps. I'm using a Corsair H50 abd my load temps reach 57c

It's seems to me that i have a crappy 940 if it takes this much voltage to remain stable, however i can also blame my board for the Vdroop and overvolting.

Thoughts?
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i run mine at 1.544 and it goes up to 1.56 at load, ide say 1.6 is a bit harsh
How about lowering Ram and manually set ram timmings? But you are right... a Vcore of 1.6 is still too high for 24/7

Good temps does not mean you are necessarily in the clear. Max safe voltage is probably 1.55

Maybe try upping the NB frequency and lowering the voltage
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Originally Posted by SanDiego
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i run mine at 1.544 and it goes up to 1.56 at load, ide say 1.6 is a bit harsh

That's what i was thinking, but i tested each voltage that i could set and each time it crashed at 3.7ghz until i got to 1.58v in bios
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Originally Posted by youra6
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How about lowering Ram and manually set ram timmings? But you are right... a Vcore of 1.6 is still too high for 24/7

having my ram go lower then 800? my current timings are 5-5-5-15
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back down your multiplier, and up your fsb!
Quote:


Originally Posted by youra6
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NB frequency ^^ it.

I'm not sure i understand what you mean. My NB freq is at the auto setting right now
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Quote:


Originally Posted by SanDiego
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back down your multiplier, and up your fsb!

I've tried that and it seems that it needs the same amount of volts to maintain a stable overclock at 3.7ghz
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up the NB frequency and lower the voltage

Quote:


What do I mean by this? As the CPU increases its speed to calculate data, so must the speed of which the CPU communicates with other components on the Motherboard: chipset, memory, etc



highlighted are recommended frequencies
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try to loosen your timings on the ram, bump the voltage on the ram? or did you just mess with the voltage on the cpu?
5-5-5-15 is fine dont need to change that. But you NEED to bump the NB
Quote:


Originally Posted by SanDiego
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try to loosen your timings on the ram, bump the voltage on the ram? or did you just mess with the voltage on the cpu?

These are my current settings...

CPU Ratio: 18.5
FSB:200
Dram: auto
CPU-NB: Auto
HT link: Auto
Ram timings: 5-5-5-15

Vcore: 1.5875v
Cpu/NB: 1.3v
Cpu VDDA: 2.8v
ram: 1.9v
HT: 1.3
NB: 1.3
NB 1.8: 1.8v
SB: 1.35v

Quote:


Originally Posted by youra6
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5-5-5-15 is fine dont need to change that. But you NEED to bump the NB

I'm going to try 2600mhz on the NB and start out at 1.5v vcore. Does that sound good?
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2
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Originally Posted by opty165
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These are my current settings...

CPU Ratio: 18.5
FSB:200
Dram: auto
CPU-NB: Auto
HT link: Auto
Ram timings: 5-5-5-15

Vcore: 1.5875v
Cpu/NB: 1.3v
Cpu VDDA: 2.8v
ram: 1.9v
HT: 1.3
NB: 1.3
NB 1.8: 1.8v
SB: 1.35v

I'm going to try 2600mhz on the NB and start out at 1.5v vcore. Does that sound good?

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2
i would start at 2400 according do the chart youra6 provided
Quote:


Originally Posted by youra6
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Crashes as soon as i start prime95, but i have to take into account my Vdroop. I'll be trying each set of voltage from 1.5 to 1.5875 again. I also increase the CPU/NB volts to 1.35v

I have a feeling its going to take the same amount of volts as before though... :/
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2
Quote:


Originally Posted by opty165
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Crashes as soon as i start prime95, but i have to take into account my Vdroop. I'll be trying each set of voltage from 1.5 to 1.5875 again. I also increase the CPU/NB volts to 1.35v

I have a feeling its going to take the same amount of volts as before though... :/

Sorry I didnt work out, Just a suggestion u may have this covered already: turn off C'n'Q?
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Quote:

Originally Posted by youra6 View Post
Sorry I didnt work out, Just a suggestion u may have this covered already: turn off C'n'Q?
yup there both turned off. I just tried 1.55v and still crashes
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I didnt know the M4A79 had that much of a Vdroop. I guess the voltages you have have 1.58 should be safe. My mobo has about a .2V difference from CPU-Z and the actual voltage set in BIOS

And you cant get it past 3.7 after 1.58v?
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