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Overclocking my E8400 :D - Page 2

post #11 of 17
As above, you need to get at least DDR2 800. You're probably running more VCore than you need to because your board/RAM is failing. 1.33VCore is good for 3.8-4.2 on a good E0 E8400.

G31 will croak at 412-420 FSB, so you're pretty much screwed all around without a new mobo and RAM. You'd be better off throwing an AMD Phenom II rig together on the cheap with a decent mobo. Or pick up a C2Q mobo/CPU/RAM combo used that has proof of OC.

If you keep what you have, max the board's NB volts, get some DDR2 800, and bump down your VCore. Get some cooling on the MOSFETs and NB or your G31 board is going to go up in smoke.
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post #12 of 17
Quote:
Originally Posted by 2thAche View Post
As above, you need to get at least DDR2 800. You're probably running more VCore than you need to because your board/RAM is failing. 1.33VCore is good for 3.8-4.2 on a good E0 E8400.

G31 will croak at 412-420 FSB, so you're pretty much screwed all around without a new mobo and RAM. You'd be better off throwing an AMD Phenom II rig together on the cheap with a decent mobo. Or pick up a C2Q mobo/CPU/RAM combo used that has proof of OC.

If you keep what you have, max the board's NB volts, get some DDR2 800, and bump down your VCore. Get some cooling on the MOSFETs and NB or your G31 board is going to go up in smoke.

1: Its running at 800MHz.

2: 1.31v is most likely his VID, not his actual lowest voltage for that speed.

3: Most do, but you never know.

@OP; Try booting at 405MHz FSB, no voltage change, drop your RAM multiplier so it runs slower. Also, as soon as you get into the BIOS, try hitting CTRL+F1 to open up some more overclocking options.
    
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post #13 of 17
Quote:
Originally Posted by PanicProne View Post
You won't go very far with that at all.

Three reasons for this:

1: Your RAM is slow. That RAM is probably running at it's maximum, so if you increase the FSB, you will increase the RAM speed.


2: 1.3v for only 3.6ghz? My old E8400 did 3.6ghz with 1.19V and 4ghz with 1.32V. Either your CPU is a bad clocker, or you don't know what you're doing.

3: Your motherboard is a piece of crap with a an even crappier chipset (G31). You're lucky it got to 3.6ghz in the first place. Don't expect more than the current 400mhz FSB on that.

Sorry, but it's the truth.
The ram isn't slow. I partook in an E8400 build a while back and CPU-Z is reflecting the proper Ram Frequency of 400Mhz. 800Mhz is actually the measure in megatransfers/sec.
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post #14 of 17
Didn't he list his ram as 333 (PC5300)? If it's 800, it's still a limitation for an E8400 OC, but the fact is his FSB will never get high enough to push it.

VID 1.31? That's crazy high.
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post #15 of 17
widowmaker12 you could try to go higher but as others have stated your chip set and ram are a limiting factor here.

If you just have to keep the E8400 then the best chip would be an Intel P45
(Gigabyte EP45-UD3 P or R, Asus P5Q series)
also get some DDR2-1066 ram or better

Also please fill out your system specs in the user CP
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post #16 of 17
Quote:
Originally Posted by 2thAche View Post
Didn't he list his ram as 333 (PC5300)? If it's 800, it's still a limitation for an E8400 OC, but the fact is his FSB will never get high enough to push it.

VID 1.31? That's crazy high.
My chip has a VID of 1.25v but I can achieve 4GHz + on that alone stable.

That 333 MHz is the JEDEC, not the speed he is actually running it at.
    
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post #17 of 17
I had a Core 2 Duo E8400 (C0) on the same chipset (same exact board even)/RAM speed (OCZ Gold series RAM though, not the same Kingston stuff). 3.6GHz would boot (not tested for stability), but 4.05GHz (9x450MHz) wouldn't. The CPU did well over that on another board/RAM, so your chipset and/or RAM will be your limit, and I don't see you getting much farther.

Right now, it's running stock, and a sibling owns it. Those boards are okay for overclocking CPUs with a lower FSB (like the Pentium Dual-core E2160 I previously had in it), but the 333MHz FSB CPUs are already closer to the maximum FSB of the chipset.
Quote:
Originally Posted by MR KROGOTH View Post
That 333 MHz is the JEDEC, not the speed he is actually running it at.
You're missing the point. Yes, it is being run at 400MHz. However, it is 667MHz rated, and it's already overclocked being at 800MHz. It likely has little headroom left, whereas most 800MHz rated RAM will have more headroom. That's the point.

Either way, the RAM is moot. The chipset is likely near it's limits.
Edited by Princess Garnet - 6/17/11 at 12:27pm
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