**Official e8400/e8500 Retail OC Thread

[Cordovader]

Here´s mine



Q740A519
500x8 1,27v
Thermalright Ultra Extreme + Zalman ZM-F3

[Chicco85]

Mine is an E8500 Q743A... You will see some results as soon as possible.

[Chicco85]

Mine is an E8500 Q743A... You will see some results as soon as possible.

Air, Tuniq Tower...

[HaTaX]

Here´s mine



Q740A519
500x8 1,27v
Thermalright Ultra Extreme + Zalman ZM-F3

Your CPU is right next to mine, Q740A523. You're getting much higher speeds then me though on similar voltage. I need 1.42 to reach 4ghz..

[Capt Proton]

Got mine Friday. Am currently at 4GHz. Ordered my Cricial Ballistix PC2-8500 yesterday. I don't think I can go much higher with my OCZ 6400!
Core Temp doesn't go below 37C, but scales logically under load (Prime 95 V25.5) to 50 or 51C on both cores. Matches a read out in Speedfan pretty well. Q743A748, Pack Date 01/04/08. Vid according to Core Temp 1.0875.

[Cordovader]

Here´s mine



Q740A519
500x8 1,27v
Thermalright Ultra Extreme + Zalman ZM-F3

First contact

Spi 1m 4803mhz


Spi 32m 4750mhz


3DMark 01 4700mhz


3DMark 05 4700mhz


Aquamark 3 4753mhz


And a nice validation


http://valid.x86-secret.com/show_oc.php?id=307566

Rig:

-Intel Core 2 Duo E8500 Q740A519
-Asus P5K Premium 0504 Bios
-2x1gb Crucial Ballistix
-Evga 8800GTS 512mb
-Corsair HX620w
-Thermalright Ultra Extreme + Zalman ZM-F3 120mm
-Ambient 16c +/-

[-JJ-]

Hi there,

Since there is no dedicated topic to E8200, I though I could my question here. Just recently switched from E6750 to E8200 and now I am trying to find stable settings for my E8200 (batch: Q744...) to run @4ghz for 24/7/385 use with the following setup:

MOBO: Asus P5K-E WIFI-AP (v.1006 bios)
CPU: C2D E8200 (batch: Q744...) @4,00ghz (1,353v vcore) cooled by TT Big Typhoon
RAM: 2x1GB Crucial Ballistix DDR2 @1200Mhz (PC2-6400, D9GMH chips)
HDD: Western Digital Caviar RE2 500GB x 2 (INTEL RAID)
VGA: CLUB 3D 8800GTS (G92) (800/1950/2200) cooled by Accelaro S1
SOUND: Creative SOUND BLASTER X-Fi Xtreme Music
PSU: Zalman ZM850-HP

So with the above setup and following bios settings I was able to run Orthos for 7+ hours with no crashes (see the screen right above):

FSB strap to north bridge: 333MHz
FSB Freq.: 501
PCIE Freq.: 105
DRAM Freq.: DDR2-1200MHz
DRAM Command Rate: 2N
DRAM Timing Control: AUTO
DRAM Static Read Control: Disable
Transaction Booster: Enabled (2)

CPU Voltage – 1,425v (1,392v real)
CPU PLL Voltage – 1,50v
FSB Termination Voltage - 1,10v
DRAM Voltage – 2,20v
NB Voltage – 1,40v
SB Voltage – 1,20v
Clock Over-Charging Voltage – AUTO
Load-Line Calibration – Enabled
CPU GTL Voltage Reference – AUTO
NB GTL Voltage Reference – 0,61x
CPU Spread Spectrum – DISABLE
PCIE Spread Spectrum – DISABLE

CPU Ratio: 08.0
CIE Support: DISABLE
Max CPUID Value Limit: DISABLE
Vanderpool Technology: DISABLE
CPU TM Function: DISABLE
Execute Disable Bit: DISABLE

Anything to improve in those above mentioned bios settings, except for lowering CPU Voltage?

So since the CPU voltage was pretty high at 1,425v in bios and with vdrop of 0,033, 1,392v real. With the same settings intact, except for lower CPU voltage (1,3850v in bios/1,1352v real), I cannot get it Orthos stable, however OCCT (AUTO mix) runs with no crashes up to CPU voltage - 1,3850v in bios / 1,352v real (see the second screen right above). I was thinking that maybe I am running the RAM to high, but then again nothing changed if I set it 1000mhz (still orthos stable with voltage @1,392v and anything less gets orthos-unstable).

BTW, if CPU GTL is set to any value but AUTO, I get either BSOD or 5second Orthos crash . Same thing NB GTL – it only works if its set to 0,61x.

Is it safe to leave the CPU running @1,425v (1,392v real) or even @ 1,3850v in bios / 1,352v real ?