E8400

Will it run fine at stock?

CPU@3Ghz
Memory@800Mhz

If so, take out 2Gb of the memory and leave 2x1Gb sticks in. See if you can get your overclock with that. It may just be that the motherboard cannot take the 4x1Gb sticks overclocked.

Unfortunately, there are some memory modules that just will not budge above their stock speeds.
 
Do you mean setting it all manually to stock speeds with the correct timings and voltages as specified on the memory?

Becaused of the price of the i7 and DDR3 I will probably be keeping this rig for a 1-2yrs, so would like to get it OC'ed, is it better to have 2 x 2GB sticks compared to 4 x 1GB sticks?
 
Hi guys, I'm also having problems overclocking an E8400 chip (C0 stepping) past 3.4Ghz. It boots no problems up to 3.6Ghz, but fails the Orthos (Dual Core Version) on the second core (the first core carries on fine :confused:) The temperatures are 65 degrees under load using an Intel stock cooler. The memory is set to 1:1 so runs at its native 800Mhz and the voltage is put up to the first red on the motherboard (where it says it may affect stability, 1.26V or something like that, I'm at work atm, so I can't check). The memory timings are set to 5-5-5-18 and the system is running on 2x2GB Corsair PC6400. The motherboard is an MSI Neo-F P35. I have overclocked an E2200 successfully to 3Ghz (no higher as I want it 100% stable and am selling it + its on stock fan), albiet on a nvidia 650i based ASUS board so I have a rough idea of how to overclock. This computer has me stomped though. Is it safe to raise above 1.26 volts or is the motherboard telling me the truth? I'm not too happy about the temperatures getting too high either (above 70 degrees under load). Any help would be appreciated.
 
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If your going to overclock the chip, I would reccommend a 3rd party cooler.

You are lucky to get it to 3.4Ghz with a stock one. Not sure about yours but the HSF I got with my E8400 had no copper base whatsoever. Ideal for default speeds but nothing else.

These chips are safe enough to push 1.4v through so you have plenty of headroom. Just get a better cooler on it first.

Also take a look at your case cooling. Do you have enough air passing through?
 
GUYS GUYS !

Not like i wanna say anything, but some of the worse C0 chips are not meant to get to 4ghz on just 1.26v .

I am pretty sure the crashes are there because of your CPU voltage and not the actual ram ;).

Put the CPU on 1.35v in bios, mch+0.2, disable EIST and C1E, boot in and watch temps using core temp and real temp.

Then see how it goes.
 
PhoenixUK said:
GUYS GUYS !

Not like i wanna say anything, but some of the worse C0 chips are not meant to get to 4ghz on just 1.26v .

I am pretty sure the crashes are there because of your CPU voltage and not the actual ram ;).

Put the CPU on 1.35v in bios, mch+0.2, disable EIST and C1E, boot in and watch temps using core temp and real temp.

Then see how it goes.
Click to expand...

Its temperature problems that is the issue, not the voltages.

If he is getting 65c+ with 1.26v, imagine what temps he would get at 1.35v with a stock cooler.
 
Wiggins said:
If your going to overclock the chip, I would reccommend a 3rd party cooler.

You are lucky to get it to 3.4Ghz with a stock one. Not sure about yours but the HSF I got with my E8400 had no copper base whatsoever. Ideal for default speeds but nothing else.

These chips are safe enough to push 1.4v through so you have plenty of headroom. Just get a better cooler on it first.

Also take a look at your case cooling. Do you have enough air passing through?
Click to expand...


I'd agree with that, I've got the Noctua cooler on mine and keeps it very cool, a lot better than the stock one. Just need to sort out my OC now.
 
Wiggins said:
Will it run fine at stock?

CPU@3Ghz
Memory@800Mhz

If so, take out 2Gb of the memory and leave 2x1Gb sticks in. See if you can get your overclock with that. It may just be that the motherboard cannot take the 4x1Gb sticks overclocked.

Unfortunately, there are some memory modules that just will not budge above their stock speeds.
Click to expand...

Going to try running mine at stock tonight with the manual settings of 800mhz Memory and the correct timings and voltage thats on the memory itself and see what happens. Will let you know when I get in.

Will also try the settings that I was first trying, but with Phoenix's suggestion of putting the CPU on 1.35v, mch+0.2 and disabling EIST and C1E

Determined to get this OC'ed so can get more out of it. Just hope I can...dont seem to be getting anywhere at the moment
 
Wiggins said:
If your going to overclock the chip, I would reccommend a 3rd party cooler.

You are lucky to get it to 3.4Ghz with a stock one. Not sure about yours but the HSF I got with my E8400 had no copper base whatsoever. Ideal for default speeds but nothing else.

These chips are safe enough to push 1.4v through so you have plenty of headroom. Just get a better cooler on it first.

Also take a look at your case cooling. Do you have enough air passing through?
Click to expand...

Thanks for your suggestion. I have several heatsinks I'm interested in, what would be the best for aiming to hit 4Ghz (seeing how it goes of course) out of the following?

Arctic Cooling Freezer 7 Pro CPU Cooler (Socket LGA775)
Zalman CNPS7500-ALCU CPU Cooler
Zalman CNPS9500-AT CPU Cooler

The third one I have to remove my motherboard, which I don't really want to have to do so please only recommend it if its the only one that will give the right performance boost and the other two wont. The Freezer is supposed to be the easiet one to fit (as I don't like fitting heatsinks, I found the socket 478 zalman hard enough. The CNPs7500 is an update of a cpu cooler I've had before, which is still running well in my p4. Let me know what you think...
 
Wiggins said:
Will it run fine at stock?

CPU@3Ghz
Memory@800Mhz

If so, take out 2Gb of the memory and leave 2x1Gb sticks in. See if you can get your overclock with that. It may just be that the motherboard cannot take the 4x1Gb sticks overclocked.

Unfortunately, there are some memory modules that just will not budge above their stock speeds.
Click to expand...


Got my CPU@3ghz, Memory@800, timings of 4-4-4-12 with DDR2 voltage of +0.2v and its booted into Windows and running fine.

Tried removing 2 sticks of memory as you suggested and try the original OC settings to see what happens now.

CPU Host Clock Control = Enabled
CPU Host Freq = 422
PCI Express Frequency = 100
System Memory Multiplier = 2.00B
DRAM Timing Selectable = Manual
CAS Latency Time = 5
DRAM RAS to CAS Delay = 5
DRAM RAS Precharge = 5
Precharge Delay = 15
DDR2 +0.2
MCH +0.1

Boots to Windows but fails Orthos after a few seconds, any ideas what this means?
 
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Doesnt mean anything.

Try reseating the cooler. What thermal paste are you using as well?
65+ looks bit high to me, you should be able to get it to about ¬3.7 stable on stock with 60+ temp on load. 3.8+ won't be possible on stock cooling tho.

How you can check if your ram overclocks is drop the CPU multiplier to lets say x6. put memory multiplier to x2.5 and up fsb to like 350. That will put your ram on 875mhz which will be the sweet spot for 5-4-4-12 or 4-4-4-12 and for hitting 4ghz.
 
Does seem high, I've got mine running at 30 at 3ghz, and when I do get it to 3.6 it doesnt go higher that 40. but then I've never had it at 3.6 for longbefore it crashes.

With regards to my OC, I kept it at the settings above when it booted to Windows but failed Othos, but after a couple of hours usage playing a game, it crashed and I had to reset it all to stock. Really no idea on how I can get it stable at 3.6 - 4ghz
 
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