What the max safe voltage for E8200/E8400/E8500 cpu's

chaparral · 2 Apr 2008 at 17:56

As title....

Am not sure what the max safe voltage i can go up to for my E8500 CPU....(watercooled)

Can i go higher then 1.425v ?? :confused:

mr griffin · 2 Apr 2008 at 18:46

If your temps are good I don't see why not.

Tom|Nbk · 2 Apr 2008 at 19:33

mr griffin said:
If your temps are good I don't see why not.

It's not just that though. It's the fact the 45nm are very susceptible to degradation when you go over a certain voltage threshold. I think it's around 1.45?

chaparral · 2 Apr 2008 at 19:57

Tom|Nbk said:
It's the fact the 45nm are very susceptible to degradation when you go over a certain voltage threshold. I think it's around 1.45?

This is what was worrying me....(as i don't want to damage my new cpu for a few weeks)

Tom|Nbk · 2 Apr 2008 at 19:59

I'd stay where you are, you really are not going to see much real world difference by pushing it more and possibly introducing degradation.

chaparral · 2 Apr 2008 at 20:05

Tom|Nbk said:
I'd stay where you are, you really are not going to see much real world difference by pushing it more and possibly introducing degradation.

Cheers Tom

Am surpised my motherboard is running it perfectly stable at 4.2ghz............as i had a 400FSB wall with my e6600 cpu installed..

Tom|Nbk · 2 Apr 2008 at 20:15

It's a good clock. I managed 4Ghz under 1.4v anything more requried a hike to 1.45 which I was not happy with. Especially considering how delicate the silicon is on these chips. So I'm keeping here 24/7

NoobieOCer · 2 Apr 2008 at 20:34

Tom|Nbk said:
It's a good clock. I managed 4Ghz under 1.4v anything more requried a hike to 1.45 which I was not happy with. Especially considering how delicate the silicon is on these chips. So I'm keeping here 24/7

i think intel stoped using silicon to make 45nm tansistors as the voltage "leaks" between transistors when they made from silicon on such a small scale. and intel took 10 years to find a soloution for this using some other metal

pastymuncher · 3 Apr 2008 at 11:20

If you try clocking higher you are likely to need 1.5v+. One word. Dont!!! I had a E8500 and while clocking it to 4.5Ghz i gave it 1.5v and the damn thing degraded. I lost every previously stable clock. When i originally got it it went to 4Ghz on 1.33v. That needed 1.5v just to boot at that speed and would not get stable. 45nm chips do not like voltage. I ould have stayed at 1.4v if i knew about the possible dangers. That's what happens when you are one of the first to buy into new hardware.

Tom|Nbk · 3 Apr 2008 at 17:18

Yep poor Pasty found out the hard way

This was the reason I'm glad I stayed under 1.4v when these chips first came out and no one was sure about degradation.

Rackerz · 3 Apr 2008 at 18:03

A lot of people say it's around 1.38V, the new 45nm's don't take a beating like the 65nm's

.

helmutcheese · 3 Apr 2008 at 18:23

Please use SEARCH as its asked all the time and dont listen to rumours because the E8000's aint been around long enough to prove degradion more than any other CPU (also use SEARCH for this).

They use 1.2v default so obv you dont pump it up as high as a older E6850 or such, 1.45v is my safe limit, where as I was happy to use 1.65v on my E6850.

JeffyB · 3 Apr 2008 at 18:39

I'm staying below 1.35v just to be on the safe side, easily fast enough anyway.

chaparral · 4 Apr 2008 at 07:25

helmutcheese said:
Please use SEARCH as its asked all the time

I read through a whole load of pages in easyrider overclocking thread and all i could mainly find was that i was wasting my time reading a load of crap posts

http://forums.overclockers.co.uk/showthread.php?t=17829969&page=15

helmutcheese · 4 Apr 2008 at 13:28

It was not in that thread, its in threads like "CPU Model+temps" or "CPU model+degradion".

Its not wasting time looking, its wasting time of others making multiple dupe posts (what 3/4 of HDD on this server must be filled with.

AdmiralJonB · 10 Apr 2008 at 00:40

helmutcheese said:
They use 1.2v default so obv you dont pump it up as high as a older E6850 or such, 1.45v is my safe limit, where as I was happy to use 1.65v on my E6850.

I just got an E8500, and on the sticker on the side it says "1.25V max". When I saw that I was really confused due to what I read in this thread... what do you guys think about it?

chaparral · 10 Apr 2008 at 08:06

AdmiralJonB said:
I just got an E8500, and on the sticker on the side it says "1.25V max". When I saw that I was really confused due to what I read in this thread... what do you guys think about it?

On the side of the box for an E8500 (45nm) it says 1.225volt max and on the side of the box for an e6600 (65nm) it says 1.35volt max

AdmiralJonB · 10 Apr 2008 at 10:06

Well that's convinced me then. Time to start overclocking!

Jumping · 10 Apr 2008 at 13:53

BaNdy said:
crank the suckers up, its a cheap cpu - enjoy the speed.
its warranted and will probably last forever (as long as you need it)

so long as its properly cooled...............

however some ppl will always get a duff one that blows.

i have a e8200 at 3.92ghz - 1.45v.

Ehh you are aware that overclocking your cpu will void the warranty.

I would also strongly recommend AGAINST the crank it up aproach to overclocking, as it's a sure way off ruining your gear.