A few questions on overclocking my E8400 and 4870

[lanken123]

Originally Posted by Dadi_oh

Is your E8400 a C0 or E0 stepping? The E0 overclocks much better than the C0 version (I have a C0 E8400 and E8200) and they both struggle to hit 3.9GHz at reasonable voltages. However, I hear the E0 hits >4GHz without breaking a sweat.

BTW to find out what stepping you have just open CPUZ and it is listed under "revision".

As far as "safe" voltages go you will get about as many opinions as there are people replying Personally I don't like to break 1.4V on my E8xxx chips.

Also, if you want best performance and your motherboard can do it you are better off with a lower multiplier and higher FSB. i.e. 400X9 < 450X8. I run 450X8 on my E8400 @ 1.35V with my memory at 1:1 for a mild OC on my 800MHz memory.

Overclocking is all about patience. See how far you can go on stock voltages, testing stability with Prime95, Orthos, or OCCT (your choice). Watch your temps and try to keep the cores <60C (should not be a problem with your Xiggy). Once you hit a wall bump the CPU voltage and Northbridge voltages a bit at a time until you find the sweet spot. It takes time but if you are patient you will be happy with the result.

Good Luck and keep us posted on your results.

I checked and its a E0. thanks for the info

[geokilla]

Lanken, don't double post. Edit your previous post or put two quotes in one post.

AnandTech - HOWTO: Overclock C2Q (Quads) and C2D (Duals) - A Guide v1.7

Great guide. Happy reading. That guide pretty much sums up what I did, and then some.

[lanken123]

Originally Posted by geokilla

Lanken, don't double post. Edit your previous post or put two quotes in one post.

AnandTech - HOWTO: Overclock C2Q (Quads) and C2D (Duals) - A Guide v1.7

Great guide. Happy reading. That guide pretty much sums up what I did, and then some.

awesome, this is what I was looking for, a very detailed noob friendly guide. thanks a bunch and I apologize for the double posting.

A few more stupid questions. are all Core 2 duos the same? like is my E0 Core 2 duo E8400 the same as someone elses? reason why I'm asking is if someone could tell me what to change in what order to gain 4ghz.

[Dadi_oh]

Originally Posted by lanken123

awesome, this is what I was looking for, a very detailed noob friendly guide. thanks a bunch and I apologize for the double posting.

A few more stupid questions. are all Core 2 duos the same? like is my E0 Core 2 duo E8400 the same as someone elses? reason why I'm asking is if someone could tell me what to change in what order to gain 4ghz.

Unfortunately every chip is a little different. Just because some settings work for one person does not mean they work for another. There are also the differences between motherboards since overclocking usually involves raising clocks on the Northbridge chip. That is why finding max OC is a bit of an art form. However, in general, there are "trends" that can be seen. For example the E0 vs. C0 on the E8400. It is possible that someone has a golden C0 chip that outclocks a crappy E0 chip but the general statistics say the average E0 > average C0. Same on Q6600. The G0 stepping was much better for overclocking than the B3 stepping.

[Malakei]

Originally Posted by Dadi_oh

Is your E8400 a C0 or E0 stepping? The E0 overclocks much better than the C0 version (I have a C0 E8400 and E8200) and they both struggle to hit 3.9GHz at reasonable voltages. However, I hear the E0 hits >4GHz without breaking a sweat.

BTW to find out what stepping you have just open CPUZ and it is listed under "revision".

As far as "safe" voltages go you will get about as many opinions as there are people replying Personally I don't like to break 1.4V on my E8xxx chips.

Also, if you want best performance and your motherboard can do it you are better off with a lower multiplier and higher FSB. i.e. 400X9 < 450X8. I run 450X8 on my E8400 @ 1.35V with my memory at 1:1 for a mild OC on my 800MHz memory.

Overclocking is all about patience. See how far you can go on stock voltages, testing stability with Prime95, Orthos, or OCCT (your choice). Watch your temps and try to keep the cores <60C (should not be a problem with your Xiggy). Once you hit a wall bump the CPU voltage and Northbridge voltages a bit at a time until you find the sweet spot. It takes time but if you are patient you will be happy with the result.

Good Luck and keep us posted on your results.

hey i have an e8400 im lookign to do the same with but i dont know if its c0 or e0 stepping how do i know without it in bios. i havent recieved the cpu yet wondering if i can figure out if its c0 or e0

[Zippoh]

Originally Posted by Malakei

hey i have an e8400 im lookign to do the same with but i dont know if its c0 or e0 stepping how do i know without it in bios. i havent recieved the cpu yet wondering if i can figure out if its c0 or e0

CPU-Z, it's under revision, should of read what you quoted.

[Neolithium_Wpg]

Here's where you find E0 or C0. Just took a quick screenshot of mine cause I'm bored