Wait nvm it's in the pictures, but putting your specs in your sig would help haha
E8400 4.2Ghz OC stability help
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Hello everyone, I am working on getting my E8400 to 4.2 ghz stable. I have attached screenies from CPU-z that show all of the necessary info.
I guess I have 2 questions....
1. Is Cpu-Z accurately showing my vcore voltage or is there a better/more accurate way to view my *actual* vcore? Currently, my vCore is set to 1.300v in BIOS which I'm assuming is too low for that much of an OC.
2. If Cpu-z is accurate then can I really expect that much vdroop? See the screenie for cpu-z vcore return.
Also, I have ran the NB / DDR / FSB voltages at a higher rate (+.3v) and backed them all down to factory without any apparent differences in stability.
This leads me to believe it's a CPU vcore setting out of whack.
I ran memtest86+ last night and didn't get a single error....
Check out the screenshot and help me out if you think you know the "fix".
Thanks in advance for helping a noob out.
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-Justin
I guess I have 2 questions....
1. Is Cpu-Z accurately showing my vcore voltage or is there a better/more accurate way to view my *actual* vcore? Currently, my vCore is set to 1.300v in BIOS which I'm assuming is too low for that much of an OC.
2. If Cpu-z is accurate then can I really expect that much vdroop? See the screenie for cpu-z vcore return.
Also, I have ran the NB / DDR / FSB voltages at a higher rate (+.3v) and backed them all down to factory without any apparent differences in stability.
This leads me to believe it's a CPU vcore setting out of whack.
I ran memtest86+ last night and didn't get a single error....
Check out the screenshot and help me out if you think you know the "fix".
Thanks in advance for helping a noob out.
-Justin
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The max vcore for 45nm processors, like his, is around 1.35V... anything above, and you run the risk of frying your processor...
I suggest you lower the vcore back to around 1.35...
Originally Posted by Ledge68 You need more Core voltage. Try 1.35-1.4v. I needed 1.45v to hit 4.5Ghz. |
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Originally Posted by trexxcrap i have to put at 1.36 for 4.0 so id say 1.4+ for you. But is there any reason to overclock it that high? i had it there at one point with no improvement in 3d scores or performance and it ran really really hot. |
I suggest you lower the vcore back to around 1.35...
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I figured that was the board after seeing the vdrop in your screenshot.
So what voltages are you running in the M.I.T. section in bios? The important ones are:
RAM Overvoltage Control
G(MCH) Overvoltage Control
FSB OVervoltage Control
Dont leave them on auto...
Originally Posted by js200 Oh I never posted the Mobo in case anyone was wondering - Gigabyte GA-EP35-DS3L (Bios Rev F5) |
So what voltages are you running in the M.I.T. section in bios? The important ones are:
RAM Overvoltage Control
G(MCH) Overvoltage Control
FSB OVervoltage Control
Dont leave them on auto...
Quote:
He has a C0 core (you can see in his CPU-Z screenshot), so it will not OC as high as the E0 cores..
Originally Posted by nyxclusive1 You should not need alot of voltage to reach 4.2 on a E8400 i'm at 4.32 @ 1.32 volts in my bios and in my OS it reads 1.34 but then again what board are you using? You can also go to one of my threads and see the voltage i'm using but like I said give a little more specs on your rig so we can help you better. I don't think you should go above the recommended voltage for that chip which would be 1.36 volts. |
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I have them on auto because I tried I stepped them up in increments of .1v and it hasn't helped my stability at all. Is there a reason for not putting it on auto?
Originally Posted by ericeod I figured that was the board after seeing the vdrop in your screenshot. So what voltages are you running in the M.I.T. section in bios? The important ones are: RAM Overvoltage Control G(MCH) Overvoltage Control FSB OVervoltage Control Dont leave them on auto... |
I have them on auto because I tried I stepped them up in increments of .1v and it hasn't helped my stability at all. Is there a reason for not putting it on auto?
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So if you, let's say, put 2V at your 45nm in BIOS, BUT in Windows (cpu-z) it schows as 1.4V you can say it's safe?
This is just a question with an example huh. Not that I put 2V on it, it's just for me to understand
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Originally Posted by sabermetrics The max vcore for 45nm processors, like his, is around 1.35V... anything above, and you run the risk of frying your processor... I suggest you lower the vcore back to around 1.35... |
This is just a question with an example huh. Not that I put 2V on it, it's just for me to understand
Quote:
Auto actually often times overvolts the board. Here are some helpful settings you might want to try:
RAM Overvoltage Control: +0.3v (default is 1.8v, and I think your ram requires 2.1v... but you can check the specs on the box to be sure)
G(MCH) Overvoltage Control: +0.1v (default is 1.25v, so 1.35v should be enough.. if not go +0.2v and thats it)
FSB OVervoltage Control: +0.1v
Originally Posted by js200 I have them on auto because I tried I stepped them up in increments of .1v and it hasn't helped my stability at all. Is there a reason for not putting it on auto? |
RAM Overvoltage Control: +0.3v (default is 1.8v, and I think your ram requires 2.1v... but you can check the specs on the box to be sure)
G(MCH) Overvoltage Control: +0.1v (default is 1.25v, so 1.35v should be enough.. if not go +0.2v and thats it)
FSB OVervoltage Control: +0.1v
Ok Thanks for the tips ericeod. I'll give that a try.
I ran a 3DMark06 on my current settings and only got an 11,380 range.
For my OC I think it should have a better rating...I guess I got some more tweaking to do.
I've got the OC backed down to 4.03 Ghz for now to compare the score against my 4.2 oc.
I'll post the score later tonight or tomorrow because I'm hungry
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I ran a 3DMark06 on my current settings and only got an 11,380 range.
For my OC I think it should have a better rating...I guess I got some more tweaking to do.
I've got the OC backed down to 4.03 Ghz for now to compare the score against my 4.2 oc.
I'll post the score later tonight or tomorrow because I'm hungry
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no because 1.4v is still over the maximum 1.3625v limitation set by intel. the general idea is that the 45nm processor should not have more than 1.3625v hitting the core...
in ur scenario u can put 2v thru the board as long as the processor itself doesnt get more than 1.3625v then ur safe.
Originally Posted by ASUSfreak So if you, let's say, put 2V at your 45nm in BIOS, BUT in Windows (cpu-z) it schows as 1.4V you can say it's safe? This is just a question with an example huh. Not that I put 2V on it, it's just for me to understand
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in ur scenario u can put 2v thru the board as long as the processor itself doesnt get more than 1.3625v then ur safe.
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