**Official e8400/e8500 Retail OC Thread

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10-21-2008, 10:20 PM
rurik

Quote:

Originally Posted by Quad-Damage

This might be why, what should i change?

I think, your chip need more voltage
10-22-2008, 01:01 AM
Yozzman

My contribution...
E8400 C0...

4.67ghz...
And no sub10 superpi:mad:
Need more tweaks :P

http://i133.photobucket.com/albums/q...zman/10094.jpg
10-22-2008, 01:08 AM
JCGhz

http://i455.photobucket.com/albums/q...Ghz/8400e0.jpg

Just got this one..
10-22-2008, 03:07 AM
kaskuli

ram timings?
10-22-2008, 05:44 AM
ssabripo

Guys,
I've gotten my system stable with:

446 x 9 = 4015 Mhhz
Vcore = 1.2875
Vnb = 1.30

System is very cool and stable. I tried going to 466 fsb (~ 4.1ghz), and did not run stable, so I assume I need more Vnb and Vcore. I dont think the extra speed is worth the power/temp increase, so now I want to reign the cores and temps down as low as possible.

I noticed several E0's running 1.1-1.2 Vcore...I'm gonna see how mine does there. My question is, how low can I safely go with the Vnb? can I get away with 1.2v?
10-22-2008, 05:53 AM
carepolice

Quote:

Originally Posted by ssabripo

low
safely
Vnb?

Umm there is no danger using low volts... :eek:

1.3 Is pretty high (lol, high and high :p:), depends how many stick of ram you got there

I belive that you will find nice spot in 1.16-1.26 area :D

Just looked on you sig and noticed 4x1GB, it may need higher nb on some situations
10-22-2008, 07:20 AM
Quad-Damage

Ai Overclock Tuner ................. [Manual]
CPU Ratio Setting .................. [9.5]
FSB Frequency ...................... [439]
PCIE Frequency ..................... [100]
FSB Strap to North Bridge .......... [Auto]
DRAM Frequency ..................... [PC2-1055] (I have 4 gigs of PC8500) G skills
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] (5-5-5-15)
DRAM Static Read Control ........... [Disabled]
DRAM Read Training ................. [Disabled]
MEM. OC Charger .................... [Enabled]
Ai Clock Twister ................... [Moderate]
Ai Transaction Booster ............. [11] or Auto
____________________________________

CPU Voltage ........................ [1.3810]
CPU GTL Voltage Reference (0/2) .... [Auto]
CPU GTL Voltage Reference (1/3) .... [Auto]
CPU PLL Voltage .................... [1.58]
DRAM Voltage ....................... [2.1]
vFSB.....................................[1.22]
NB Voltage ......................... [1.26]
NB GTL Reference ................... [Auto]
SB Voltage ......................... [Auto]
PCIE Voltage ....................... [Auto]
____________________________________

Load-Line Calibration .............. [Disabled]
CPU Spread Spectrum ................ [Disabled]
PCIE Spread Spectrum ............... [Disabled]
CPU Clock Skew ..................... [Auto]
NB Clock Skew ...................... [Auto]
CPU Margin Enhancement ............. [Perfomance Mode]

It's unstable after 20 mins into prime
10-22-2008, 07:57 AM
ssabripo

Quote:

Originally Posted by Quad-Damage

Ai Overclock Tuner ................. [Manual]
CPU Ratio Setting .................. [9.5]
FSB Frequency ...................... [439]
PCIE Frequency ..................... [100]
FSB Strap to North Bridge .......... [Auto]
DRAM Frequency ..................... [PC2-1055] (I have 4 gigs of PC8500) G skills
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] (5-5-5-15)
DRAM Static Read Control ........... [Disabled]
DRAM Read Training ................. [Disabled]
MEM. OC Charger .................... [Enabled]
Ai Clock Twister ................... [Moderate]
Ai Transaction Booster ............. [11] or Auto
____________________________________

CPU Voltage ........................ [1.3810]
CPU GTL Voltage Reference (0/2) .... [Auto]
CPU GTL Voltage Reference (1/3) .... [Auto]
CPU PLL Voltage .................... [1.58]
DRAM Voltage ....................... [2.1]
vFSB.....................................[1.22]
NB Voltage ......................... [1.26]
NB GTL Reference ................... [Auto]
SB Voltage ......................... [Auto]
PCIE Voltage ....................... [Auto]
____________________________________

Load-Line Calibration .............. [Disabled]
CPU Spread Spectrum ................ [Disabled]
PCIE Spread Spectrum ............... [Disabled]
CPU Clock Skew ..................... [Auto]
NB Clock Skew ...................... [Auto]
CPU Margin Enhancement ............. [Perfomance Mode]

It's unstable after 20 mins into prime

change vFSB to AUTO, and NB Voltage to [1.32]
10-22-2008, 08:30 AM
misho

Damnit

OK so I ordered E8500 from newegg, and got the cpu from new jersey warehouse where everyone got E0s..

my package comes today - E8500 C0, q818A102, PACK DATE JULY 27, 2008 :down::down::mad::mad::mad::eek::eek::eek:

I am SAD... and I have been waiting to get this CPU over a month and now get this sh.ittty thing.. So do you think this batch will overclock good guys?? or is it total bulls**t?
10-22-2008, 08:42 AM
Ozzfest05

relax my C0 did 4.753 ghz on air
10-22-2008, 08:48 AM
misho

Quote:

Originally Posted by Ozzfest05

relax my C0 did 4.753 ghz on air

On what volts? I am aiming for 4.3-4.5 on under 1.4V
10-22-2008, 10:22 AM
DOM.

E8500 Q822A537 Pack Date 8/7/07 to play with friday
10-22-2008, 10:48 AM
LagunaX

Quote:

Originally Posted by misho

OK so I ordered E8500 from newegg, and got the cpu from new jersey warehouse where everyone got E0s..

my package comes today - E8500 C0, q818A102, PACK DATE JULY 27, 2008 :down::down::mad::mad::mad::eek::eek::eek:

I am SAD... and I have been waiting to get this CPU over a month and now get this sh.ittty thing.. So do you think this batch will overclock good guys?? or is it total bulls**t?

Think you might get 4.2ghz on 1.35v or less.
10-22-2008, 11:59 AM
misho

K guys question:: SHOULD I get 2 x Scythe ULTRA KAZE 2000RPM fans or
2 x Scythe ULTRA KAZE 3000RPM fans for my thermalright ultra 120 extreme? Are 3000RPM too loud?
10-22-2008, 12:02 PM
jaredpace

3000rpm
10-22-2008, 12:06 PM
misho

Quote:

Originally Posted by jaredpace

3000rpm

But isn't it tooo loud? I am thinking of doing 2 x 2000rpms.
10-22-2008, 12:06 PM
Ozzfest05

the 3000's push 50dba at full blast I have them they weigh a ton because they are 120 120 36 not 120 120 25 I wouldnt reccomend them they are sweet fans but for the airflow noise ratio not so good my tower nearly left the ground however my ears bled slightly.
10-22-2008, 12:15 PM
misho

KK Im going to buy 2 x 2000rpms for now, if anything I will return/exchange.

Thanks
10-22-2008, 01:10 PM
JCGhz

Quote:

Originally Posted by misho

KK Im going to buy 2 x 2000rpms for now, if anything I will return/exchange.

Thanks

I have the kaze 1900rpm's... They move alot of air (110cfm) and they are not as loud as my case fans and they work great in push pull with my TRUE.
10-22-2008, 01:58 PM
Quad-Damage

I have 3x Scythe S-FLEX SFF21E 120mm Case Fan - Retail on my Swifttech rad and it's a bit loud outside of the computer, it's not as loud as my hard drive, but it's not silent. you can hear the air moving that's about it.
10-22-2008, 05:11 PM
HDCHOPPER

Quote:

Originally Posted by Yozzman

My contribution...
E8400 C0...

4.67ghz...
And no sub10 superpi:mad:
Need more tweaks :P

http://i133.photobucket.com/albums/q...zman/10094.jpg

it took mine 4.7 to get sub 10's with a clean small HD
10-23-2008, 01:26 AM
JCGhz

Not bad for a Maximus Formula and a Cheap E8400. Air Cooled By TRUE
http://i455.photobucket.com/albums/q...rimestable.jpg
LLC disabled
10-23-2008, 05:24 AM
LagunaX

Very nice - that's like one of my e8500's - a keeper!
10-23-2008, 10:01 PM
bigwill68

@JCGhz

Great:yepp: holding it stable Very close to that 1.3625V what your temps at idle?
10-23-2008, 10:20 PM
JCGhz

Quote:

Originally Posted by bigwill68

@JCGhz

Great:yepp: holding it stable Very close to that 1.3625V what your temps at idle?

its was 3d stable at lower vcore... but i wanted it prime stable so staying under that 1.3625 very nice.My Idle temps are below 36c but im not quite sure since the sensors are stuck there:)

This is one sweet little 8400 it suprised the heck outta me.
My E8600 took almost 1.5vcore to hit 4.5 which i wasnt happy with.

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