E8600 Prime Stable Overclocking Database

[DemonEyez]

Ok folks! now its finally done, and i ended up with a vcore of 1.42. not TO bad and not TO good, im satisfied, its low enough!
Small FFT's was the game, and it cleared! puuh, suddenly i got the right combo for pll and fsb and GTL. Here's Q820A627
...

Hey congrats! So all your hard work has paid off . So how about sharing those voltages and PLL, GTL, vTT, etc settings

[Leeghoofd]

E8600 Q826A457 Pack Date 08/14/2008
Cooled by Thermalright Ultra 120 and 1200rpm PAPST fan
Asus P5Q Dlx 1406 bios

CPU Voltage: 1.31 in bios --> 1.3 in windows idle, drops to 1.27 under load
CPU GTL Voltage Reference (0/2): 0.635
CPU GTL Voltage Reference (1/3): 0.635
CPU PLL Voltage: 1.56
FSB Termination Voltage: 1.18
Load Line Calibration : disabled

Idle piccie :



Loaded piccie :



Early tests with this CPU needed 1.36 (under load) to be linpack stable at 4.5 (500 x 9) but coretemps go over 65°C with the TRUE... 4.2 seems to be the sweetspot temp/voltage wise... The CPU has got one stuck core sensor at idle (40°C) but once loaded it goes along with the other core... c'mon Intel solve this once and for all

[x0vash0x]

With my experience, after about 1.35 vCore the temps of the 8600 go insanely high. These are the max temps I feel comfortable with, as I'm more concerned with vCore then the actual temps. I can get 4.5 stable at 1.37 vCore with temps that hover around the 60. While, here you can see the temps top off around 70 at 1.42 vCore. So, once you pass 1.33 vCore, prepare to have a furnace.



My goal is to get 500 * 9.5 = 4.75 If I can do this, I'll be happy. I was shooting for 5.0, but this chip get too hot.

[Infa]

insanly low VID you got there , and thats why you are getting this high temperature too, there's a big jump in vcore on such low VID , you've raised it 0.36v thats quuite much, for me as VID 1.25 to 1.42 theres only a raise of 0.17 , and im getting 54c in water.

Demon, some settings.

CPU Voltage: 1.44317(or something) gets 1.42 loaded, 1.416 unloaded. with LLC enabled.
CPU GTL Voltage Reference (0/2): 0.68
CPU GTL Voltage Reference (1/3): 0.68
CPU PLL Voltage: 1.58
FSB Termination Voltage: 1.20

Tried ALOT with VTT and GTL, and this is THE setting that works, just 0.68 seems like the sweetspot, and higher VTT doesnt work well either.

Gonna try this NB skews and CPU skews, couse blend wont work so good i think, didnt try after i got cpu all stable, maybe it works
but the RAM stability is SO hard on this board, soooo picky , neediung 2.02 for 900mhz CL7 , PL 6 , Strong skew, as tight as possible can be thinking of using another multiple to get little higher FSB, but come on? hehe thats getting me like 300-400mb read, from allready 12mb read, the computer really flies allready, and i dont get whhy having it so fast but goin from 4,2 to 4,5 actually did "little" diffrence or its just my mind that WANT it to be faster hehe. Can get a more complete list of settings when i get home.

cheerio!

[PolRoger]

FPO/Batch Q820A597 Pack Date 7/24/08
1.250 VID shows 1.20v @ stock in bios.
+.150 cpu vcore = 1.344v in bios and with vdroop at load it fluctuates around 1.328v/1.336v

Prime Blend: TPower I45, Xigamatek RS-1283 (with an extra Sanyo-Denki for this run), OCZ PC2-8500 5/6 divider (RCOMP 3), ATI X800XL, BFG ES-800, WD2500KS 250gb, Vista Home SP1 64bit

[DemonEyez]

insanly low VID you got there , and thats why you are getting this high temperature too, there's a big jump in vcore on such low VID , you've raised it 0.36v thats quuite much, for me as VID 1.25 to 1.42 theres only a raise of 0.17 , and im getting 54c in water.

Demon, some settings.

CPU Voltage: 1.44317(or something) gets 1.42 loaded, 1.416 unloaded. with LLC enabled.
CPU GTL Voltage Reference (0/2): 0.68
CPU GTL Voltage Reference (1/3): 0.68
CPU PLL Voltage: 1.58
FSB Termination Voltage: 1.20

Tried ALOT with VTT and GTL, and this is THE setting that works, just 0.68 seems like the sweetspot, and higher VTT doesnt work well either.

Gonna try this NB skews and CPU skews, couse blend wont work so good i think, didnt try after i got cpu all stable, maybe it works
but the RAM stability is SO hard on this board, soooo picky , neediung 2.02 for 900mhz CL7 , PL 6 , Strong skew, as tight as possible can be thinking of using another multiple to get little higher FSB, but come on? hehe thats getting me like 300-400mb read, from allready 12mb read, the computer really flies allready, and i dont get whhy having it so fast but goin from 4,2 to 4,5 actually did "little" diffrence or its just my mind that WANT it to be faster hehe. Can get a more complete list of settings when i get home.

cheerio!

Thanx for those setting. I decided to see I could do 4500MHz with less voltage. Is was running 9x500 but for that I need a vTT of 1.31 a vNB of 1.36v and a vCC of 1.34v.
For 24/7 use I find it just a tad high. Also it has been hell to figure out which GTL ref was the best, that kept me busy for 2 full days...

So I switched to 9.5x474 for 4500Mhz Now i need vTT of 1.22, a vNB of 1.32 and a vCC of 1.32v. This time my inital setting of GTL's to 67/67/61 was right on the spot. Still have to do a long run of Prime, but it looks promising. So I'm sticking with these settings.

My bandwidth with 9.5x474 in Everest is just slightly lower than with 9x500. The latencies however are lower, so that's nice

I'm giving up on running 7x600.
To maintain 6 hour Prime stability , I need to make too much comprimises with NB and RAM timings , so much, the bandwidth really sucks.

[Infa]

Yeah, that sounds good the higher VTT the lower GTL is used, maybe you have looked in the GTL thread, but the REF voltage you have to keep at about 0.8v
and many boards got diffrent values for GTL, I see that you got DFI and they are not the same as mine, that uses multiplier, check the thread, they have the formula for right GTL, and then you can fine tune it.

You got low vNB for that fsb, im needing about 1.50 for 450fsb, but maybe it depends on what other settings and PL you got. Why do you think 1.34 are high? i had my 8500 at 1.45 daily, worked perfectly since it was released, late january until now when i sold it. Ah well its up to the person itself im not blaming you.

Its fun tweaking, but its getting frustrated sometimes

happy tweaking!

regards.

[DemonEyez]

Yeah, that sounds good the higher VTT the lower GTL is used, maybe you have looked in the GTL thread, but the REF voltage you have to keep at about 0.8v
and many boards got diffrent values for GTL, I see that you got DFI and they are not the same as mine, that uses multiplier, check the thread, they have the formula for right GTL, and then you can fine tune it.

You got low vNB for that fsb, im needing about 1.50 for 450fsb, but maybe it depends on what other settings and PL you got. Why do you think 1.34 are high? i had my 8500 at 1.45 daily, worked perfectly since it was released, late january until now when i sold it. Ah well its up to the person itself im not blaming you.

Its fun tweaking, but its getting frustrated sometimes

happy tweaking!

regards.

I got lower vNB because my bord uses the P45 chipset and yours the X48. Mine is 60Nm and yours 90Nm.

I read the GTL thread. Man there's a lot of info in that topic. It really helped me to fine tune GTL. Like I said it was hell , but eventually got my stable setting (based on 0.80) Still, for the right values I had to use trial and error , so there a lot op combo's possible for GTL.
and yes, i can get very frustrating

[X4er0]

Guess this is enough for now, going for 4.5GHz but still testing bios settings.



Prime running for a couple of hourse now, but i'm glad i got rid of the BSOD's.

[cstkl1]

Q820A405 4.74ghz 1.46 Vcore nugzo http://img72.imageshack.us/img72/4431/4500do5.jpg ????

TS didnt u notice something...its 4.5ghz

[RCG_Bex]

Q820A750
4.8ghz @ 1.48 Vcore
Asus Maximus flashed to Rampage

Need to get screeny but it's prime stable again

Pics are on other PC which is stripped again for new case the week

~Bex

[LuckySevn]

Where did you guys get all your Q822A435 from? I looked all over the US and found a Q822A430 VID 1.215v that tops out at 4480GHz 452x10 @ 1.33v, for some reason the FSB comes out to be 448 instead of 452.....

If I can get one I'm willing to pay international shipping for it!

[JAPANAC]

E8600 @ 4.6GHz ( IFX-14, fans 3xThermaltake A2368 2000rpm 78CFM, 14~16C ambient )
FPO#: Q820A600 (Pack Date: 07/29/08)
VID 1.25V
Vcore 1.432 load (460x10)

[carepolice]

E8600 Q826A457 Pack Date 08/14/2008
Cooled by Thermalright Ultra 120 and 1200rpm PAPST fan
Asus P5Q Dlx 1406 bios

CPU Voltage: 1.31 in bios --> 1.3 in windows idle, drops to 1.27 under load
CPU GTL Voltage Reference (0/2): 0.635
CPU GTL Voltage Reference (1/3): 0.635
CPU PLL Voltage: 1.56
FSB Termination Voltage: 1.18
Load Line Calibration : disabled

Excuse me if this goes to offtopic but i have to ask you... What makes you keep LLC disabled?

Becouse i have started to belive that my LLC fails randomly, computer is stable to IBT/Gaming/prime, but on idle whit 0% load it can make some weird reboots sometimes!

So i think that LLC makes random "huge" volt drops when it is on idle.

[JAPANAC]

E8600 @ 4.7GHz ( IFX-14, fans 3xThermaltake A2368 2000rpm 78CFM, 12~16C ambient )
FPO#: Q820A600 (Pack Date: 07/29/08)
VID 1.25V
Vcore 1.464 load (470x10)






Interesting, this CPU with Asus P5Q-E (same setup in BIOS 1703m) was stable only 1h17min.