**Official e8400/e8500 Retail OC Thread

[zlojack]

Mine is at 1.41v 24/7 and running BOINC the temps usually don't go above ~46*C

Orthos stable for 12+ hours small FFT my max temps were 56*C

I don't mind the voltage or the temps, really. I don't imagine I'll have this chip for that long, and I got it for relatively cheap. If this one somehow degrades, well, by then the E8500 E0 Stepping is under $200 and usually OC's better anyway. Or the Q9550 will have dropped in price. Lots of possibilities.

[So3oL4Nu]

Mine is at 1.41v 24/7 and running BOINC the temps usually don't go above ~46*C

Orthos stable for 12+ hours small FFT my max temps were 56*C

I don't mind the voltage or the temps, really. I don't imagine I'll have this chip for that long, and I got it for relatively cheap. If this one somehow degrades, well, by then the E8500 E0 Stepping is under $200 and usually OC's better anyway. Or the Q9550 will have dropped in price. Lots of possibilities.

Under water cooling ? ...i like u're temps

[WhiteFireDragon]

anyone know when E0 revision will be out? the new e8600 comes default with E0

[AndrewL1950]

quick question. I have not overclocked in a while, but want to with my 8400.

I have a Noctua NH-u9B

My 8400 is running at 45(core2) and 52(both under max with HWmonitor.

Would it be safe for me to OC as far as I can without touching the voltage? Or should I get a new HSF, and what do you suggest.

[bikebuilderdude]

Just got a new set up with the E8400 and a Asus Maximus II Formula MB, but I'm having a problem with it. The CPU is stuck at 6 for the multiplier and I have already turned off E1A and IST. Anybody have an idea on if it is the MB or the CPU causing this problem? Also the CPU is running at 52 at idle, which seems a bit high, even for the stock cooler.

[zlojack]

Under water cooling ? ...i like u're temps

Thanks, yeah. Watercooling with the CPU, NB and Mosfets in one loop on a PA120.2 and MCP655. Pretty good

anyone know when E0 revision will be out? the new e8600 comes default with E0

I would imagine the retailers will be flushing stock on the old stepping before the new one gets in. I imagine that they'll start to show up in the next month and a half.

quick question. I have not overclocked in a while, but want to with my 8400.

I have a Noctua NH-u9B

My 8400 is running at 45(core2) and 52(both under max with HWmonitor.

Would it be safe for me to OC as far as I can without touching the voltage? Or should I get a new HSF, and what do you suggest.

For just the stock volts, you should be ok.

Just got a new set up with the E8400 and a Asus Maximus II Formula MB, but I'm having a problem with it. The CPU is stuck at 6 for the multiplier and I have already turned off E1A and IST. Anybody have an idea on if it is the MB or the CPU causing this problem? Also the CPU is running at 52 at idle, which seems a bit high, even for the stock cooler.

What are you using to measure temps? Try RealTemp and make sure your heatsink is mounted properly. What voltage are you using?

As for the multiplier, I'm not familiar with that board, but look around here, there should be a good thread about it.

[So3oL4Nu]

Thanks, yeah. Watercooling with the CPU, NB and Mosfets in one loop on a PA120.2 and MCP655. Pretty good

WoW, nice...i think i saw u're system in the WC thread...nice one

[Kartoff]

Just made this :



I am so happy

[bikebuilderdude]

Thanks, yeah. Watercooling with the CPU, NB and Mosfets in one loop on a PA120.2 and MCP655. Pretty good


I would imagine the retailers will be flushing stock on the old stepping before the new one gets in. I imagine that they'll start to show up in the next month and a half.



For just the stock volts, you should be ok.



What are you using to measure temps? Try RealTemp and make sure your heatsink is mounted properly. What voltage are you using?

As for the multiplier, I'm not familiar with that board, but look around here, there should be a good thread about it.

I'm using core temp and bios at stock settings, but I'm more interested in why I can't get it to run at the rated 3.0ghz.

[Mongoose420]

Spent last night tweaking and playing with voltages and didnt make any progress in lowering my vcore any further. Ran a few benches up to 475x9 but couldnt get anything over 4.2ghz stable. Might be able to make some headway once i reacclimate myself better with the motherboard.

Decided to let it prime away 450x9 5:6 1.3vcore(bounces around between 1.29-1.31 under load, no dmm readings). I guess i really shouldnt be upset.

[HDCHOPPER]

Just got a new set up with the E8400 and a Asus Maximus II Formula MB, but I'm having a problem with it. The CPU is stuck at 6 for the multiplier and I have already turned off E1A and IST. Anybody have an idea on if it is the MB or the CPU causing this problem? Also the CPU is running at 52 at idle, which seems a bit high, even for the stock cooler.

ya that sounds screwy perhaps another bios?

[Pisklink]

I was wondering what you guys think of my temps and voltages?!? I think temps are ok. But voltages seems to be a bit high compared to other E8400 owners. However, I have this board, mem and CPU for 3 weeks nog and have been tweaking since then to get it stable. I still have to get my memory stable tho.

Today I got my CPU stable at 4.05Ghz and maybe I can adjust vCore to a lower level but it won't be much I'm affraid. I don't really mind running a high vCore since I'm planning to buy a E8600 of Q9550 by the end of this year or beginning of next year. Nonetheless could this high vCore be related to a bad batch or should I change some other setting?



@ Gurusan

Damn good job on the database!!!! Nice work.

[Kristoferr]

Decided to let it prime away 450x9 5:6 1.3vcore(bounces around between 1.29-1.31 under load, no dmm readings). I guess i really shouldnt be upset.

Why ur saying 1,3V then CpuZ clearly shows us that ur setting is 1,35V at bios?

I have tested same motherboard and CPUz shows a little less than actual bios setting is. Metered by multimeter, true voltage is around 1,34V

[zlojack]

I'm using core temp and bios at stock settings, but I'm more interested in why I can't get it to run at the rated 3.0ghz.

Well, according to a lot of testing, the 45nm temp sensors don't do a very good job at idle. That's why a lot of people now use RealTemp, since he did a lot of physical testing and measuring temps with an IR thermometre to determine that TJMax is actually 95*C, not 105. Unless you calibrate CoreTemp to take into account the TJMax is actually 95 degrees.

What are your load temps?

[joger]

E8500 (Q816A479) 10hrs+ Primestable at 9.5x421 ~4ghz 1.32v cooled by a Scythe Ninja Plus Rev. B with dual 12cm fans at 5v.

This one ain't so good, been testing for 3 days now, needs 1.38v+ for 4.2ghz+
Maxed so far at 4.5ghz on 1.448v O_O

[Mongoose420]

Why ur saying 1,3V then CpuZ clearly shows us that ur setting is 1,35V at bios?

I have tested same motherboard and CPUz shows a little less than actual bios setting is. Metered by multimeter, true voltage is around 1,34V

It is set to 1.300 in bios with no add. Can either believe it or not. No skin off my neck.

[iTravis]

Booting my E8400 to windows as 4.4Ghz but couldn't get it stable since it requires a ridiculously more than 1.6V to run.

[HDCHOPPER]

[QUOTE=Pisklink;3204418]I was wondering what you guys think of my temps and voltages?!?

volts to high for 4.0 temp ok

[Leeghoofd]

Why ur saying 1,3V then CpuZ clearly shows us that ur setting is 1,35V at bios?

I have tested same motherboard and CPUz shows a little less than actual bios setting is. Metered by multimeter, true voltage is around 1,34V

CPU is not loaded anymore, with laod it could drop abit so it could be perfectly around 1.3ish... and not all boards are alike mate... they are like women... worlds apart sometimes yet sometimes so ressemblant

[Pisklink]

volts to high for 4.0 temp ok

Thought so, but when I set voltage any lower it would crash of not boot at all. I could post a list of my complete settings if that would be helpfull with getting my voltages lower?!?

@ Leeghoofd

LOL!!!!

[Pisklink]

I hope someone can help me out here. I keep on getting errors in Orthos on the second core I think. At least the error message appears constantly in the lowest box (see picture). I don't know what to do to let it disappear.



These are my current settings when stress testing small FFT's:

MP 9
FSB strap 400
FSB 450
PCIE 100
DRAM 1350
Timings 7-7-7-20-2N

Static Read disabled
Dynamic Write disabled
CLK Skew auto

AI clock twister auto
Transaction booster auto

vCore 1,45
CPU GTL 0/2 auto
CPU GTL 1/3 auto
CPU PLL 1,56
VTT 1,28
vDRAM 2,00
vNB 1,57
NB GTL 0,61
vSB auto

LLC performance
CPU spread disabled
PCIE spread disabled
CPU Clock Skew 300ps
NB Clock Skew auto

All energy saving stuff is disabled.

[H4wk]

I have same problem. My E8400 Q818... for 3,87 GHz want 1,4125 V, and he is stable on this settings...i try go to 4 GHz but at 1,45v he was unstable...I don't want go up with voltages... I think that 817,818... batches are worst then 815, 814...
here is SS, prime is runing +12H...what you mean about temp, volts...?

[Pisklink]

Could you possibly provide your settings as well?

A moment ago I was getting sick of trying for three week now so I decided to set my vNB to 1.64v (with active cooling), NB CLK skew to 200ps, CPU PLL to 1.6v and vCore to 1.4625v (in bios).

At this moment I'm running Orthos at small FFT's for one hour and will keep it running overnight. If it stays stable till tomorrow morning I will try getting my memory stable. After that I will try and reduce voltages. Am I correct that I can lower vCore by adding some GTL reference voltage?

[AndrewL1950]

So I just got Realtemp, and it's saying my CPU is at 33, 39. How can that be?

CoreTemp is saying it's at 49-52. Is CoreTemp that wrong?

Also for some reason, with my Intel 8400, Temp programs keep saying my GHZ changes from 2000 to 3000, and the multiplier keeps changing from 9 to 6. Is this just an error with the programs, or is my motherboard doing something stupid?

[zlojack]

RealTemp is generally accepted as the most accurate for 45nm. After a lot of research, UncleWebb found that the TJMax of the 45nm was 10*C lower than was originally thought.