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overclocking E8400

S

shkevin

Junior Member
This is my first time trying overclocking, and with some adequate cooling I was just hoping to raise E8400 to 3.6ghz. This is my pc right now:
https://secure.newegg.com/NewV.../TemporaryWishList.asp

I was wondering if I would be able to overclock to 3.6 without having to raise the voltage? and also can you guys look at my ram and help me optimize it to the cpu? thanks for taking the time to read this 🙂
 
The items in the wish list aren't showing.

I think pretty much all E8400 can hit 3.6Ghz with only a slight bump in voltage. Pair that with DDR2-800 RAM and a decent MB that can hit 400 FSB, and 3.6Ghz should be easy. The reason for DDR2-800 is it will be running at stock speed when the E8400 is overclocked to 3.6Ghz.
 
sorry that the wish list didnt work
so the motherboard is gigabyte p35 ds3l and the ram is Kingston HyperX 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 1066. I am not sure if this would be ok paired with the e8400 so I would appreciate your input.
 
guys sorry for the newb question but I should set the ram frequency to 1066 on the bios right? Also the timing settings change when I change it to 1066, do I have to correct that too?
 
For a 3.6ghz OC you should set the RAM to 800 (400 CPU host freq in bios x 9 = 3.6ghz).

I just got an e8400 as well. Effortless 3.6 OC @ 2.75v, can probably go lower v, will experiment. I used the larger stock cooler off my last chip, an e6400 (better than the e8400's) and temps are high 20's idle, mid-50's load. Pretty happy with it.

 
Originally posted by: amenx
For a 3.6ghz OC you should set the RAM to 800 (400 CPU host freq in bios x 9 = 3.6ghz).

I just got an e8400 as well. Effortless 3.6 OC @ 2.75v, can probably go lower v, will experiment. I used the larger stock cooler off my last chip, an e6400 (better than the e8400's) and temps are high 20's idle, mid-50's load. Pretty happy with it.
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2.75V? :Q

Do you mean 1.75V? That's still insanely high.
 
3.6 GHz should be like taking candy from a baby. Try it first without any voltage tweaks. Then, if anything crops up, tweak the CPU voltage and the Northbridge voltage by one notch. You should then be GTG.
 
lol, yeah I meant 1.275. I did try it at stock volts but it rebooted. Not sure if it was that or something else (ie quirky display drivers in a 3dm06 run). Will set it at default and try again.
 
Originally posted by: child of wonder
Originally posted by: amenx
For a 3.6ghz OC you should set the RAM to 800 (400 CPU host freq in bios x 9 = 3.6ghz).

I just got an e8400 as well. Effortless 3.6 OC @ 2.75v, can probably go lower v, will experiment. I used the larger stock cooler off my last chip, an e6400 (better than the e8400's) and temps are high 20's idle, mid-50's load. Pretty happy with it.
Click to expand...

2.75V? :Q

Do you mean 1.75V? That's still insanely high.
Click to expand...

That's what I was thinking! 1.75v would be pretty dangerous, I've heard of people's socket flaming up at 1.5v.
 
I'm running my e8400 @ 2.8GHz @ 1.4v right now, it'll run at 4GHz, but it's not prime stable at that speed, at least it wasn't on my Gigabyte board, it might be on the ABit IP35-E I just installed. I may actually step it back down to 3.6GHz tho and run it there at a much lesser voltage, been reading a lot about chip degradation at 1.4v or higher on these new 45nm chips, so I don't want to kill my CPU before I've had a chance to enjoy it 🙂
 
Originally posted by: Riverhound777
Mine did 3.6 at stock volts, but I never stress tested.
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I've been 3.6 at stock volts for several weeks now. I've run all the stress tests etc.. and completely stable. I almost thing I can get a little higher at stock voltage. My MB is a Gigabyte p35 ds4
 
What do people consider 'stock volts'? What they input into the bios or the actual reading of the sensors (as in cpu-z or everest)? Vdroop brings my 1.275v bios input value to 1.232v. Never goes above that even when orthos stressed. I think Intel specs a (roughly speaking) 1.125 to 1.35 or so working range, is that considered stock volts? Or does that wide range simply reflect the huge variations in mobo reported vcores and vdroop?

 
Originally posted by: Krakn3Dfx
I'm running my e8400 @ 2.8GHz @ 1.4v right now, it'll run at 4GHz, but it's not prime stable at that speed, at least it wasn't on my Gigabyte board, it might be on the ABit IP35-E I just installed. I may actually step it back down to 3.6GHz tho and run it there at a much lesser voltage, been reading a lot about chip degradation at 1.4v or higher on these new 45nm chips, so I don't want to kill my CPU before I've had a chance to enjoy it 🙂
Click to expand...

Maybe you mean 3,8 ghz at 1,4V. Come on people stay sharp and write the numbers correctly. 😉
 
I too am curious as to what people consider stock volts. Especially considering that using "auto" on many motherboards will bump the vcore considerably when you go to a 400fsb. For instance, my p5e took it up past 1.3v when I went to 400fsb, up from the 1.15v stock on that motherboard (with an e8400). I unfortunately wasn't able to get it stable at the "stock" 1.125v - I'm now at 1.2v in the bios (1.17v in CPU-z). I should add the disclaimer - I haven't run orthos - all I care about is a games-stable overclock.
 
Originally posted by: Termie
I too am curious as to what people consider stock volts. Especially considering that using "auto" on many motherboards will bump the vcore considerably when you go to a 400fsb. For instance, my p5e took it up past 1.3v when I went to 400fsb, up from the 1.15v stock on that motherboard (with an e8400). I unfortunately wasn't able to get it stable at the "stock" 1.125v - I'm now at 1.2v in the bios (1.17v in CPU-z). I should add the disclaimer - I haven't run orthos - all I care about is a games-stable overclock.
Click to expand...

Every Intel CPU retail box lists the stock voltage on the side of the box. Mine says 1.225 I believe, although I'm not at home, so I can't swear to that.
 
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