**Official e8400/e8500 Retail OC Thread

[Godmyster]

I ran IBT but after that i ran prime95 but computer just froze after 20min, then i tried to restart and when it got to windows it just restarted by it self... damn whats wrongs? what am i doing wrong here? do i need more volts anywhere? those are my latest settings but couldnt get it stable...

[R31Nismoid]

Here is mine

Batch# Q831A779


I will try to push it further, still learning about all of this so ill get there eventually.
I thought it wasn't too bad for a days effort

Its stable with Linpack/Prime95 etc etc. Can run for hours no problems

[bigwill68]

Here is mine

Batch# Q831A779


I will try to push it further, still learning about all of this so ill get there eventually.
I thought it wasn't too bad for a days effort

Its stable with Linpack/Prime95 etc etc. Can run for hours no problems

Great Job at them Volts at a High Oc

[Godmyster]

Thats what i wanted on mine but seems like im the only one getting problems getting there, if there were people here with a P5Q Deluxe and a 8400 that could give me a hand...

[R31Nismoid]

Great Job at them Volts at a High Oc

Thanks

I will drop the vcore a little as i go, its stable as it gets for now.

I did attempt 4.5ghz, but keeps crashing on SuperPI 32M
So ill have to do some more reading i think and work that out.
Boots to windows no worries @ 4.5, just not stable but then i might need more volts still. Something for another day

Actually under load its 1.296vcore - seems it wasnt loaded enough when i took the screen dump

[Godmyster]

I tried these settings:

Ai Overclock Tuner ................. [Manual]
CPU Ratio Setting .................. [8,5]
FSB Frequency ...................... [495]
PCIE Frequency ..................... [100]
FSB Strap to North Bridge .......... [Auto]
DRAM Frequency ..................... [990]
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 : 6
RAS# Precharge : 6
RAS# ActivateTime : 18
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 .................... [Enable]
Ai Clock Twister ................... [Auto]
Ai Transaction Booster ............. [Auto]
____________________________________

CPU Voltage ........................ [1.37]
CPU GTL Voltage Reference (0/2) .... [Auto]
CPU GTL Voltage Reference (1/3) .... [Auto]
CPU PLL Voltage .................... [1.56]
FSB Termination Voltage............. [1.30]
DRAM Voltage ....................... [1.98]
NB Voltage ......................... [1.30]
NB GTL Reference ................... [Auto]
SB 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 Enhancement ............. [Optimal Mode]

And i got this...



only ran 6min...

[R31Nismoid]

read here?

http://www.xtremesystems.org/forums/...d.php?t=208858

[LennyRhys]

Godmyster, why the 8.5 multi? You'll need more vcore the lower the multi. I'm really lucky to have a chip that can prime at 1.35 vcore 4.41GHz, but that's 9.5 multi. Overclocking is no easy task, so don't expect 4.2GHz to fall into your lap if you're not experienced.

[lexus232]

This is my results. I think it's perfect for C0

[Godmyster]

This is what i tried on my last run...



i want to get to 4.2 at least!!!

[carepolice]

I tried these settings:

Ai Overclock Tuner ................. [Manual]
CPU Ratio Setting .................. [9]
FSB Frequency ...................... [467]
PCIE Frequency ..................... [100]
FSB Strap to North Bridge .......... [Auto]
DRAM Frequency ..................... [990]
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 : 6
RAS# Precharge : 6
RAS# ActivateTime : 18
RAS# to RAS# Delay : Auto
Row Refresh Cycle Time : 55
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 .................... [Enable]
Ai Clock Twister ................... [Auto]
Ai Transaction Booster ............. [Auto]
____________________________________

CPU Voltage ........................ [1.37]
CPU GTL Voltage Reference (0/2) .... 0.630x This at start, may need tweaking
CPU GTL Voltage Reference (1/3) .... 0.630x This at start, may need tweaking
CPU PLL Voltage .................... [1.56]
FSB Termination Voltage............. [1.30]
DRAM Voltage ....................... [1.98]
NB Voltage ......................... [1.30]
NB GTL Reference ................... [Auto]
SB Voltage .......................... 1.1-1.2
PCIE SATA Voltage .................. 1.5-1.6
____________________________________

Load-Line Calibration .............. [Enable]
CPU Spread Spectrum ................ [Disabled]
PCIE Spread Spectrum ............... [Disabled]
CPU Clock Skew ..................... Try 400
NB Clock Skew ...................... Try 200
CPU Margin Enhancement ............. [Optimal Mode]

And i got this...



only ran 6min...

Try those first, maybe little NB increase / more vFSB too. If those doesnt help more Vcore to go!

[gurusan]

How do you know when to change the CPU and NB clock skews?

[bigwill68]

Wrote:
I did attempt 4.5ghz, but keeps crashing on SuperPI 32M
So ill have to do some more reading i think and work that out.
Boots to windows no worries @ 4.5, just not stable but then i might need more volts still. Something for another day

Actually under load its 1.296vcore - seems it wasnt loaded enough when i took the screen dump

I know at first when..I got mine..I went straight to 4.5ghz to see if would do it and it did but was'nt stable and the volts was high...It's kinda fun to find out where you can be stable at with certain amount of volts you need to the Ghz speed right now I'm at 1.296vcore under load at 4.104ghz..and testing
how far..I can drop the vcore volts to be stable at 4.1ghz less volts less heat
also..

[R31Nismoid]

Ye i was wondering if it was a matter of giving it more volts to get it stable or not, something i didnt have time to do that day.
I just let my mobo recover from the crash and just backed it off again.

Must admit the recover of this mobo is great without having to hit reset buttons etc etc (been a few years, so tech obviously has come a long way)

I reckon i can maybe drop it 1-3 points (lots of options in my BIOS), maybe even 4... but testing that will take a while with each drop.
I will add more once i go faster, or drop... or both!

I'm fairly sure the memory i have is A-OK, i could probably even drop those timings a little as well, although what gains ill get remain to be seen

[PolRoger]

Thanks

I will drop the vcore a little as i go, its stable as it gets for now.

I did attempt 4.5ghz, but keeps crashing on SuperPI 32M
So ill have to do some more reading i think and work that out.
Boots to windows no worries @ 4.5, just not stable but then i might need more volts still. Something for another day

Actually under load its 1.296vcore - seems it wasnt loaded enough when i took the screen dump

Looks like you got a pretty nice chip.
You are right... to get 500x9 stable will require more voltage to vcore and possibly MCH/VTT.

[ZenEffect]

cranked this out yesterday



crap vid cpu though 1.25 but its low volts high oc so whatever.

batch q824a540

[rastaseb]

E8400 Q832A446 : stable at 4.3 with 1.22 under load, and boot Windows at 5 with 1.37...in progress

[PolRoger]

E8400 Q832A446 : stable at 4.3 with 1.22 under load, and boot Windows at 5 with 1.37...in progress

Sounds like a great chip! What is the VID? and how are the temps at 1.35v and above?

My E8400 Q832A161's overhead noticeably drops once past 4.7. If you are really feeling ambitious... how about trying to get 533x9 stable.

[Godmyster]

Try those first, maybe little NB increase / more vFSB too. If those doesnt help more Vcore to go!

No go there, computer froze running Orthos after like a 1min, how do i know what batch i have?

[PolRoger]

No go there, computer froze running Orthos after like a 1min, how do i know what batch i have?

If you bought a retail box cpu... the fpo/batch number will be listed on the box label. It is also printed on the actual cpu heatspreader.

[bigwill68]

how do i know what batch i have?

It's on your box FPO/BATCH# <it will look like that

[rastaseb]

Sounds like a great chip! What is the VID? and how are the temps at 1.35v and above?

My E8400 Q832A161's overhead noticeably drops once past 4.7. If you are really feeling ambitious... how about trying to get 533x9 stable.

VID is 1.2125 but it's getting very hot : 65 max under OCCT at only 1.26 (4.4 stable)

max FSB is 641 (Nh-C12p)

[PolRoger]

VID is 1.2125 but it's getting very hot : 65 max under OCCT at only 1.26 (4.4 stable)

max FSB is 641 (Nh-C12p)

Mine is 1.2250 and it runs hotter than my 1.25 vid E8600. I started out testing with the Xigmatek but with higher volts the temps were harder to manage. I switched to a TRUE with a Sanyo-Denki San-Ace but I think I'm going to end up runnning it under water.

[Godmyster]

my fpo/batch #: Q822A559 thats whats on the Box anyone know if these are any good?

[bigwill68]

my fpo/batch #: Q822A559 thats whats on the Box anyone know if these are any good?

now that's a question that is hard to find out unless someone with the same
batch# is having pretty good luck with theres ok sense we got the batch#
post that in your sig along with the (Pack Date) and the (Spec ID) so we
can see when it was packed up in the box