**Official e8400/e8500 Retail OC Thread

[cincyrob]

ok i understand now. when in auto it takes it up itself. you need to go into the setting as i just talked about and it has a setting in there that has your memory multiplyers. select 2.0 and you will be good to go... i should have said that in the first place....


im gonna shut mine down go into bios and find the exact things you need to change. so youknow what im saying i know im not useing the correct terms you need to know...lol brb

[zfactor]

cincyrob with a vid that low you should be able to get to 4.1-4.2 on air as long as you can control the temps..

[HamTard]

ok i understand now. when in auto it takes it up itself. you need to go into the setting as i just talked about and it has a setting in there that has your memory multiplyers. select 2.0 and you will be good to go... i should have said that in the first place....


im gonna shut mine down go into bios and find the exact things you need to change. so youknow what im saying i know im not useing the correct terms you need to know...lol brb

Ya I have the memory multiplier set to 2.0 now, that's why I got 9x370 to work and my current test of 9x375 is good so far, but I meant what should I do with memory timings (5-4-4-12), leave auto or manual?

[zfactor]

personally i always find its more stable to set them manually you can also run memset and get the rest of the current timings for the other values if you want to set them all manually

[HamTard]

you guys have been a great help, i've gotta go out now but I'll be back later today to see how my 9x375 prime95 run is going

hopefully I can do 9x380, and ideally i'd like to see 9x400 but I doubt I'll get that on stock vcore

[cincyrob]

ok here we go. take a look at these. i hope it helps some.. your in the right direction now.





this should get you in the right direction. once you set the mem to manual you can set it to 4-4-4-12 each has its own box to work in. you should be good to go with it there..

oh yea 3.33ghz isnt a bad OC.. its not as xtreme as the site implies...lolbut neather is my 3.6ghz

[So3oL4Nu]

I hear you all talking about Vdrop and Vdroop...i tested my CPU without PLL / FSB Termination and LLC, same thing...the idle Vcore and the load Vcore it's not chaging....
I have a horible MOBO...read this...

Vcore 1.375 BIOS
Vcore 1.312 IDLE
Vcore 1.248 Under LOAD

Same setting with PLL / FSB Termination and LLC enable...

Now i run:

X8
500FSB
Vcore 1.375
Dram 1000mhz 5-5-5-15 @ 2.2 (Corsair XMS2 DHX)
LLC OFF
CPU PLL AUTO
FSB TERMINATION AUTO
TRANSACTION BOOSTER DISABLE (value 0)

Orthos Stable

[Vivi]

Hi! my addition.

awesome CPu.

E8500 Q814A156
1.22v 32M on Commando


and 3d stable

[Pisklink]

@ Timbosan

Thanks for explanation of Vdrop and Vdroop. My settings are:

Bios: 1.4375
Idle: 1.408
Load: 1.408 (I think due to LLC)

Would you pls take a look at post #3973 and give me some advise? I see all people around me get high clocks with low volts but mine is exact opposite (I think). Thanks in advance.

[mskvorc1]

If I understand correctly Prime's Small FTT is for testing CPU, and Blend for memory and system. If so, if Prime Blend fails it's doesn't have to be problem in vCore, because there can be problems with memory settings or CPU FSB voltage or nForce SPP voltage, right?

Since I manage to pass 12 hours of Prime with CPU FSB 1.2V, nForce SPP 1.4V, memory on 2.0V with 4-4-4-12 at 900 MHz, I'm currently running Small FTT+s to find stable vCore for my CPU. If my CPU passes 12 hours of prime, then I run blend to see if my system is stable?

Please, answer my questions.

[Calmatory]

Small FTT stresses more CPU, Long/Blend stresses RAM and chipset more due to increased memory/chipset bandwidth/requests. With small TFF's there is less data to be transfered.

[mskvorc1]

Small FTT stresses more CPU, Long/Blend stresses RAM and chipset more due to increased memory/chipset bandwidth/requests. With small TFF's there is less data to be transfered.

So, what I'm trying to say is correct?

[kpo6969]

I think I have probably one of the worst vdrop/droops I've seen:
examples:
E8400 @ 3.6 VID 1.225
GA-P35-DS3L rev 2.0 (cheapest P35)
mit 1.262
bios 1.236
cpuz 1.216
load 1.20

for 4.0 I would have to set mit over 1.4
I need 1.28 for 3.8 in cpuz
crappy batch I believe (808A169)

[HamTard]

If Prime95 stopped working (the program actually closes and a Windows prompt lets me know), is that a sign of unstability or just a software glitch?

If it's unstable then it means my OC tops at 3.33GHz with 1.225V Bios / 1.184V CPU-Z

[AriciU]

It is. Occt will most definately fail after around 2-5 minutes if Prime throws an illegal error or whatever it's called.

[inCore]

InCore
do you see anythign different when you hit ctrl & f1? i dont see anything different that allows me to do anything?

I'm afraid I'm not by my computer for another two weeks, on holiday abroad. I remember some settings came up, they weren't very useful though in my eyes. If I'm not mistaken, they had something to do with the voltage, but were somehow the reverse of the standard settings.

I think I have probably one of the worst vdrop/droops I've seen:

My craptastic CPU kicks your CPU's failure into yesterday. 1.392 in CPU-Z for 3.85 GHz, set to 1.43 in BIOS. I challenge anybody to show me worse figures.

[oli_ramsay]

Mine:

I got my e8400 from a TPU member for £82. I can't get this chip stable at 4GHz using less than 1.5125Vcore in BIOS (1.472 under load). I'm not really happy running it at that 24/7 because I'm using air cooling and I've heard anything above 1.45 is very bad for these chips.



I'm not sure what to do. I might sell it and get a new E0 stepping when they arrive.

[zfactor]

If Prime95 stopped working (the program actually closes and a Windows prompt lets me know), is that a sign of unstability or just a software glitch?

If it's unstable then it means my OC tops at 3.33GHz with 1.225V Bios / 1.184V CPU-Z

ill bet it has to do with other things than just your cpu i bet on a better mobo you could get more or with better ram etc...

[HamTard]

Since 9x375 is unstable in small FFT, but 9x370 is (for 10 hours), I'm running 9x367 for now (3.3GHz) since I'm not sure I want to run too close to my max.

With VID 1.2250V, what is causing my instability in small FFT? I'm going to assume I either need more vcore or my temps are too high (60 seems to be where I top out, but RealTemp 2.60 has never shown me over 60 so I'm not sure if it can even report higher, or if my cooling happens to prevent it from passing 60)

My auto RAM timings were set to 5-5-5-18, but my RAM is rated 5-4-4-12, so what should I set it manually to be?

I guess things aren't too bad, but it bums me out that my VID is so high and I can't OC too much. It makes me almost regret not getting the G0 step Q6600 for a tad more money, but then I think about how I could've ended up with a bad OC'ing Q6600 and how much worse low clockspeed is for games, and it provides some comfort.

[So3oL4Nu]

I think I have probably one of the worst vdrop/droops I've seen:
examples:
E8400 @ 3.6 VID 1.225
GA-P35-DS3L rev 2.0 (cheapest P35)
mit 1.262
bios 1.236
cpuz 1.216
load 1.20

for 4.0 I would have to set mit over 1.4
I need 1.28 for 3.8 in cpuz
crappy batch I believe (808A169)

Hehe, look at post 4009, i have the biggest Vdrop/droops u've ever seen ...u're Vdrop/droops it's normal...

[SergioRoadster]

Hey guys, I'm kind of confused about the voltages. Some have 1.36V others 1.45, that depends of the batchs?
My E8400 box says "VERSION #: E27439-001 1.25v max".
So I shouldn't pass the 1.25?
The VID on core temp displays 1.2250v

I can get the computer stable at 400FSB with 1,21v, but more the 420 it just freezes even aplying 1.25v. Can it be from the other voltages? I have the rest on auto when trying to go more then 400 FSB.

[cincyrob]

well i might have ya all beat...lol im at work now and cant prove it until tomorrow. but i had mine set like this.
mit=1.4235v
bios=1.233
cpu-z=1.34v
then under load it dropped more. 1.28v

lol not sure if i want to prove this...lol

[zlojack]

Hey guys, I'm kind of confused about the voltages. Some have 1.36V others 1.45, that depends of the batchs?
My E8400 box says "VERSION #: E27439-001 1.25v max".
So I shouldn't pass the 1.25?
The VID on core temp displays 1.2250v

I can get the computer stable at 400FSB with 1,21v, but more the 420 it just freezes even aplying 1.25v. Can it be from the other voltages? I have the rest on auto when trying to go more then 400 FSB.

Most people like to keep their chip at 1.36 or less for 24/7 on air cooling.

Your board should be able to push this chip very nicely.

[So3oL4Nu]

No one about my Vdrop/Vdroops?

Post 4009 look again ...

X 8.5
470FSB
Vcore 1.37 BIOS
Vcore 1.312 IDLE
Vcore 1.24 UNDER LOAD
CPU PLL 1.5
FSB TERMINATION 1.3
LLC Enable
Dram 940mhz 5-5-5-15 2T @ 2.1v

[SergioRoadster]

Most people like to keep their chip at 1.36 or less for 24/7 on air cooling.

Your board should be able to push this chip very nicely.

With someone that knows about overclock I bet.

Finaly I got to start windows on 450FSB.
But I had to set the CPU voltage on BIOS to 1.45v.
CPU-Z shows 1.42v.
In core temp the VID passed from 1.2250v to 1.1500v. Shouldn't this be always the same number?

Zlokack you have a rampage formula x38? is it performance and BIos almoast like my x48? If so could you post your settings on a safe daily use overclock?