Core 2 Q8x00 Series Overclock and Underclock Thread

[TurtleCrusher]

So a lot of you picked up the Q8200 at MC for $99 and have been overclocking them i'm sure. I picked it up this january and was a bit tricky to overclock where i'm at now, but viola! Its nice and stable. Lets keep track of who gets what on each board.

Q8200 Overclocks
E4300 @ 3.7ghz (FSB 528 1.28V)
Loafbred @ 3.03ghz (FSB 433 1.16V)
Scholzpdx @ 3.01ghz ( FSB 430 1.28V)


Q8300 Overclocks



Q8400 Overclocks



Q8x00 Underclocks
Ilkhan @ 2.0ghz (FSB 285 1.02V)
Scholzpdx @ 1862mhz (FSB 266 1.01V)

 

[E4300]

Q8200 R0 revision @ 3.7GHz (528MHz x 7) with 1.28V in CPUz. Peak coretemp of 60C in 72F room. This is with EP45-UD3P. Had to back down to 3.6GHz to keep VTT and VNB under 1.4V.

 

[TurtleCrusher]

That's a extreme overclock. Extremely good, but in MY opinion seems like its pushing the board. If it works great and its prime stable, you got yourself a hell of a CPU.

Nice job. What kind of cooling do you use?

 

[E4300]

Heat is not a big issue with this chip due to the 1.28V load voltage. Chip is stable at 3.6GHz with default 1.22VID. I use a modded Big Typhoon with 120 x 38mm fan. Also have a 92mm fan between RAM and NB region to keep them cool at 528MHz FSB. This is key for system stability due to the very high level of VTT and VNB set in BIOS.

Although system is uber stable at 528MHz, prolonged use will kill the MB. A more realistic working range for this board and a 45nm quad is 500-510MHz FSB. That's around 25MHz higher than my IP35-E.

The Abit would not POST with this R0 chip (no BIOS support), but I didn't have any problem running it at 475MHz FSB (3.33GHz) with another C0 processor. Again, the core speed is bounded by how far I want to push VTT and VNB. I could get it up to about 485MHz with an overdose of VTT and VNB.

Hitting 525MHz FSB is a breeze for IP35-E if you have a good 45nm dual core. Drop the multi to 8, set FSB to 525, crank up Vcore to 1.37, and raise VTT and VNB up by one notch. It's that simple. For normal use, the FSB is set at 491MHz (4.42GHz core speed), with default VTT and VNB. CPUz shows a load of 1.32V vs 1.37V set in BIOS. Peak Orthos thermal load is 61C with 74F ambient.

 

[ilkhan]

Q8200 stock cooling win7 x64 RC
2.0Ghz (285FSB) @ 1.025v (1.00 crashed havent tried anything in between)

 

[loafbred]

I got my Q8200 to 3.03 GHz at default voltage 1.1625v) with an EP45-UD3L. I started running folding at home on it, and changed it to 2.33GHz with vcore at 1.00v. Yesterday I changed it to 2.8 GHz with vcore at 1.10v. I need to do some more testing to see how high it will go with 1.00v, as I haven't tried higher than 2.33 GHz.

 

[TurtleCrusher]

Updated. I'm thinking i might be able to lower my Vcore after reading these.

 

[watek]

M1 does not overclock that well with my board.

 

[E4300]

I've worked with two M1 chips. Very easy to hit 3.0GHz if you have good MB, RAM, and cooling. You'll need to balance VTT, VNB, Vcore, etc above 450MHz. Use the lowest settings to get the job done. Really no need to "brute force" more than 1.28Vcore to achieve 3.0GHz overclock. Too much Vcore will roast the PWM heat sink (active cooling).

 

[soccerballtux]

Originally posted by: E4300
Q8200 R0 revision @ 3.7GHz (528MHz x 7) with 1.28V in CPUz. Peak coretemp of 60C in 72F room. This is with EP45-UD3P. Had to back down to 3.6GHz to keep VTT and VNB under 1.4V.

Lol-- your name causes your overclocking result to be confusing-- "e4300 @ 3.7ghz".