**Official e8400/e8500 Retail OC Thread

[babalouj]

Here are the results from an E8400 Q829A147 I picked up from Microcenter today.

[hokiealumnus]

Well, here's my new 24/7 OC. It's not the greatest chip, not the worst. Coming from an E4400 it's sure made me happy!

FPO/Batch #: Q829A078
Pack Date: 9/8/08
500 x 8.5 = 4.25GHz @ 1.344v

[lexus232]

With my e8400 in ORTHOS at 467x9.0 1.296v (cpu-z) i getting error on core2 after ~30sec Small FTTs testing. Which option in BIOS should i tweak to get better stability?

[e30Birdy]

still havent got mine running right, for some reason it looks like i am the only person that owns a e8500 from batch Q750A071, i dont see any Q750 in the 8500 list at all and am running 440x9.5 atm @ 1.35v but it isnt stable at all, i dont really think i have passed orthos on anything other then stock with this guy! Been tempted to give it up and throw him in ebay and get myself a E8600 and try from there, was really happy to get this CPU after reading all the tests on it but mine doesnt clock at all!

Anyone got a suggestion?

[jjwa]

Hello guys,

I have bought a E8400 from the batch q832A88, do you have any infos about this batch in particular?

K thanks bye.

[platinumjason]

Anyone help me out with some overclocking? I have the E8400 FPO/Batch# Q833A110. Im running an Asus P5Q board, Ive been testing stability with Intel's Burn Test and get it to pass level 2 stress @ 10 passes with any settings but fails level 1 immediately. At idle Im sitting 31 / 29 and under stress test 2 I maxed out at 61 / 61.

System:

E8400
Asus P5Q Pro
Corsair 650TX
G. Skill DDR2-1066 4GB
EVGA 9500gt
Ultra Chilltec CPU Cooler


Settings:

FSB 450
Multiplier 9.0
DRAM DDR2 Frequency - 1081
SB 1.20
NB 1.40
CPU GTLREF 0.63x
PLL 2.0
1.33v but shows up as 1.312 in cpu-z
AI Clock Twister on light

[rastaseb]

some voltages are too high :

Vnb : 1.24 max
GTlLref: 0.61
PLL : don't go higher than 1.7 for benchs /1.5 for 24/7

try again with those voltages, il could be better!

[platinumjason]

Yeah I went through and dropped a everything down lower and to auto. Anyone here pass intels burntest? I've read that others have ran their over clocks for 10+ months stable but run test 1 on IBT and fail immediately like I do.

[bigwill68]

Yeah I went through and dropped a everything down lower and to auto. Anyone here pass intels burntest? I've read that others have ran their over clocks for 10+ months stable but run test 1 on IBT and fail immediately like I do.

If you don't mine there..Would you please post your specs of your Rig
in your Signature so everybody knows what your working with

Thanks!!!

[Dark-Energy]

I need help with OCing my E8400 to 4.0 GHZ. I recently just got

Asus P5QL PRO
E8400
Antec 900
GameXstream 600 watt

I have the E0 stepping, and I heard they can OC like mad, like 4.5 on air. I hit 3.6 GHZ by just changing the FSB, then when I hit 3.8 it wouldn't boot, so I only changed the FSB voltage to 1.3v and the NB to 1.2 and it works. I have no errors on prime 95 at all, not even once. This is where I hit a road block. As soon as I go past 430 FSB, there's a 50% chance it won't boot (post) and will reset. When it does boot, prime 95 runs perfectly stable, and so does the rest of my PC. I just don't get it. It's perfectly stable, but my motherboard is lazy to post at that speed. Temps are 41C after 2 hours of prime 95 on Freezer 7 pro. I thought it was my old Corsair DRR2667 ram thats running at 845 mhz, but prime 95 Ram test still has no errors after 2 hours. I tried changing ram timings, nothing. Tried changing CPU voltage, ram voltage, nothing. FSB and NB seemed to get me to 3.8, but I can't get past it. I'm thinking it's just the board, but I also haven't tried SB voltages or CPU stew settings, and a bunch of others, but they don't really seem relevant.

If anyone can help me, I would really appreciate it.

[Godmyster]

tried nother run and got this..



And these were the settings...

Ai Overclock Tuner ................. [Manual]
CPU Ratio Setting .................. [8]
FSB Frequency ...................... [530]
PCIE Frequency ..................... [100]
FSB Strap to North Bridge .......... [400]
DRAM Frequency ..................... [1060]
DRAM Clock Skew on Channel A1 ...... [Auto]
DRAM Clock Skew on Channel A2 ...... [Auto]
DRAM Clock Skew on Channel B1 ...... [Auto]
DRAM Clock Skew on Channel B2 ...... [Auto]


DRAM Timing Control: Manual
1st
CAS# Latency : 5
RAS# to CAS# Delay : 5
RAS# Precharge : 5
RAS# ActivateTime : 15
RAS# to RAS# Delay : Auto
Row Refresh Cycle Time : Auto
Write Recovery Time : Auto
Read to Precharge Time : Auto

2nd
Read to Write Delay (S/D) : Auto
Write to Read Delay (S) : Auto
Write to Read Delay (D) : Auto
Read to Read Delay (S) : Auto
Read to Read Delay (D) : Auto
Write to Write Delay (S) : Auto
Write to Write Delay (D) : Auto

3rd
Write to Pre Delay : Auto
Reado to Pre Delay : Auto
Pre to Pre Delay : Auto
All Pre to Act Delay : Auto
All Pre to Ref Delay : Auto

DRAM Static Read Control ........... [Disabled]
DRAM Read Training ................. [Disabled]
MEM. OC Charger .................... [Auto]
Ai Clock Twister ................... [Auto]
Ai Transaction Booster ............. [Auto]
____________________________________

CPU Voltage ........................ [1.35]
CPU GTL ............................. [Auto]
CPU PLL Voltage .................... [1.52]
FSB Termination Voltage............. [1.34]
DRAM Voltage ....................... [2.0]
NB Voltage ......................... [1.26]
NB GTL Reference ................... [1.26]
SB Voltage ......................... [1.20]
PCIE SATA Voltage .................. [1.50]
____________________________________

Load-Line Calibration .............. [Enable]
CPU Spread Spectrum ................ [Disabled]
PCIE Spread Spectrum ............... [Disabled]
CPU Clock Skew ..................... [Auto]
NB Clock Skew ...................... [Auto]

[LagunaX]

NB probably needs more juice for that high of an fsb.
If you increase multi back to 9 and drop fsb for same ghz you might get it (if you don't bump up NB).

[Godmyster]

it wont go on multi 9 i really dont know why...

[bigwill68]

And these were the settings...

Ai Overclock Tuner ................. [Manual]
CPU Ratio Setting .................. [8] > Try 9.0 <
FSB Frequency ...................... [530] > Try 445 <
PCIE Frequency ..................... [100]
FSB Strap to North Bridge .......... [400]<< ? should'en that be higher

DRAM Frequency ..................... [1060] < Try setting it at next 1 down
like 913/2 = 455
DRAM Clock Skew on Channel A1 ...... [Auto]
DRAM Clock Skew on Channel A2 ...... [Auto]
DRAM Clock Skew on Channel B1 ...... [Auto]
DRAM Clock Skew on Channel B2 ...... [Auto]


DRAM Timing Control: Manual
1st
CAS# Latency : 5
RAS# to CAS# Delay : 5
RAS# Precharge : 5
RAS# ActivateTime : 15
RAS# to RAS# Delay : Auto
Row Refresh Cycle Time : Auto
Write Recovery Time : Auto
Read to Precharge Time : Auto

2nd
Read to Write Delay (S/D) : Auto
Write to Read Delay (S) : Auto
Write to Read Delay (D) : Auto
Read to Read Delay (S) : Auto
Read to Read Delay (D) : Auto
Write to Write Delay (S) : Auto
Write to Write Delay (D) : Auto

3rd
Write to Pre Delay : Auto
Reado to Pre Delay : Auto
Pre to Pre Delay : Auto
All Pre to Act Delay : Auto
All Pre to Ref Delay : Auto

DRAM Static Read Control ........... [Disabled]
DRAM Read Training ................. [Disabled]
MEM. OC Charger .................... [Auto]
Ai Clock Twister ................... [Auto]
Ai Transaction Booster ............. [Auto]
____________________________________

CPU Voltage ........................ [1.35] (+0.125 =1.336v on
Biostar setting)

CPU GTL ............................. [Auto] (0.63 biostar setting)
CPU PLL Voltage .................... [1.52]
FSB Termination Voltage............. [1.34] (auto biostar setting)
DRAM Voltage ....................... [2.0] (Rams needs 2.1v)
NB Voltage ......................... [1.26] (1.256v)
NB GTL Reference ................... [1.26]
SB Voltage ......................... [1.20] (1.256v)
PCIE SATA Voltage .................. [1.50]
____________________________________

Load-Line Calibration .............. [Enable]
CPU Spread Spectrum ................ [Disabled]
PCIE Spread Spectrum ............... [Disabled]
CPU Clock Skew ..................... [Auto]
NB Clock Skew ...................... [Auto]

I put my infor in on what..I'm running Ic your ram is not running at 2.1v and your SB volts are under as well in your bio's turn your DRAM Frequency down
alittle 913 if you you got that but one under your 1060 and your volts up and just stress the cpu only and run a ibt test and see what happens another thing what Bio's did you have? are they the 1406 bios?

[[XC] 4X4N]

A little more playin around this morning. This is not prime stable but enough to pass 32m and surf

[gurusan]

nice. looks like similar results to my chip, what is your stepping?

[Xvys]

I got my new E8400 E0 this afternoon, and so far I'm pretty amazed. I thought this cpu was a dud at first, as it would not boot above 4.0 GHz at any voltage. Then I turned down the VTT to 1.1v and now it o/c like crazy! Here is as far as I got with the ram @ 585 Mhz with 2.1v. I tried 4460 MHz with the same settings, but Orthos crashed...still much tuning to do!

[hokiealumnus]

This thing really likes Vcore over 4.6'ish:


Validation.



Not a great E8400, but at least it's not a C0!

[SpeedEuphoria]

I got my new E8400 E0 this afternoon, and so far I'm pretty amazed. I thought this cpu was a dud at first, as it would not boot above 4.0 GHz at any voltage. Then I turned down the VTT to 1.1v and now it o/c like crazy! Here is as far as I got with the ram @ 585 Mhz with 2.1v. I tried 4460 MHz with the same settings, but Orthos crashed...still much tuning to do!

Nice, I'm going to try 1.1v CPU term when i get my board back

[R31Nismoid]

it wont go on multi 9 i really dont know why...

try 8.5 then @ 445, why wont it go to 9? It should standard.

Also try 500 x8 etc etc, a bit of trial and error. Dont just select one and then give up the ghost

Get the FSB first as i (like others) reckon its the ram, when your running that high in 1:1

[Godmyster]

I can do 8x515 but im gonna get other rams and another batch, btw what rams do you recommend for this board?

[gurusan]

did some priming today. i love this chip

[zowle]

Hi. I get a new 8400. It's 1.25 VID and Q832A886 Batch

Is it good for oc? Sry but i'm new at this. What configuration do you recomend me for start at oc?

Cheers

[geto]

Anyone still using an Abit IP35 pro with E8400?

Possibly Gskill F2-8000CL5D-4GBPQ ram?

If so, could you post your settings. I am running into some problems after trying to get 500 FSB and it's not running stable now.

Thank you

[Kartoff]

My 24/7 settings 100% stable :

AI Overclock tuner: MANUAL
CPU Ratio Setting: 8
FSB Strap to North Bridge: 333
FSB Frequency: 550
PCI-E Frequency: 103
DRAM Frequency: 1102
DRAM CLK Skew on Channel A1: AUTO
DRAM CLK Skew on Channel A2: AUTO
DRAM CLK Skew on Channel B1: AUTO
DRAM CLK Skew on Channel B2: AUTO
DRAM Timing Control: MANUAL

1st Information :

CAS# Latency: 5
DRAM RAS# to CAS# Delay: 5
DRAM RAS# Precharge: 5
DRAM RAS# Activate to Precharge: 15
RAS# to RAS# Delay : 3
Row Refresh Cycle Time: 50
Write Recovery Time: 5
Read to Precharge Time: 3

2nd Information :

READ to WRITE Delay (S/D): 8
Write to Read Delay (S): 3
WRITE to READ Delay (D): 5
READ to READ Delay (S): 4
READ to READ Delay (D): 5
WRITE to WRITE Delay (S): 4
WRITE to WRITE Delay (D): 5

3rd Information :

WRITE to PRE Delay: 10
READ to PRE Delay: 5
PRE to PRE Delay: 1
ALL PRE to ACT Delay: 5
ALL PRE to REF Delay: 5
DRAM Static Read Control: ENABLE
DRAM Read Training: ENABLE
MEM. OC Charger: ENABLE
AI Clock Twister: MODERATE
AI Transaction Booster: Manual
Common Performance Level [10]
Pull-In of CHA PH1: ENABLE
Pull-In of CHA PH2: ENABLE
Pull-In of CHA PH3: ENABLE
Pull-In of CHA PH4: ENABLE
Pull-In of CHB PH1: ENABLE
Pull-In of CHB PH2: ENABLE
Pull-In of CHB PH3: ENABLE
Pull-In of CHB PH4: ENABLE

CPU Voltage: 1,43
CPU GTL Voltage Reference (0/2): AUTO
CPU GTL Voltage Reference (1/3): AUTO
CPU PLL Voltage: 1,56
FSB Termination Voltage: 1,26
DRAM Voltage: 2,1
NB Voltage: 1,28
NB GTL Reference: AUTO
SBridge Voltage: AUTO
PCIE SATA Voltage: AUTO

Load Line Calibration: ENABLE
CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
CPU Clock Skew : Auto
NB Clock Skew : Auto
CPU Margin Management : Performance