X6800 meets -100°c "Blackbox"

[C3]

Hi everybody,

today I started playing with my X6800 and my -100°c "BlackBox" cascade made by ice-man.



The specs:

CPU: Core2 Extreme X6800ES "B1" Week 17
Motherboard: ASUS P5B Deluxe 1.03G VCore&VDroop mod Bios: 0903
Memory: 2x 512MByte Corsair PC8500C5
PSU: Fortron Source 700W
VGA: ATI Radeon X800GT lol
Cooling: -100°c "Blackbox" cascade
OS: Windows XP Prof. SP2

My latest scores @1,816V :

PI 1M: 10,547s@ 4908MHz




Max. Frequency: 5000MHz


Validation URL

I think this scores aren't the limit and they're still some MHz to squeeze out during the next session.
Btw. Anybody experienced that the P5B Dlx always reboots when VCore is above 1,85V?!

[Paxi]

Lol 5ghz that´s insane .. very nice done

[before]

It's nice dude!

What was evap temps?

[C3]

During 1M the evap was constantly at -91°c.
Have you any clue regarding the reboot issue at >1,85V?
I'd love to reach 5,XMHz pi-able like you

[before]

R1150 on second stage? -91C loaded looks great; mine is more like -85C loaded; BTW that's not bad for a R290+R170 2-stager.

Not experienced this issue with Vcore but with Vmch. Did you tried benching with clearly less volts such as about 1.75V. I was able to boot into windows 5000MHz@1.74Vcore with mine and 1.8V+ wasn't really interesting.

[C3]

Yes, the second stage is filled with R1150. Your temps are great
To be able to disable the 2nd core via the BIOS I need the 0804 BIOS?
I think this option would help me to improve the score.

[before]

Of course, disabling a core is the right tweak just run -> msconfig -> boot.ini -> advanced options -> numproc set to 1 and then reboot

I didn't notice you was running both cores; I guess you'll be able to reach 5GHz benchable with only 1 core enable.

[C3]

Thanks for the hint,bro
I'll try it during my next overclocking session today or tomorrow

[LittleDevil]

Have you any clue regarding the reboot issue at >1,85V?

Do you have vdroop mod on your mobo?

BTW: Great results

thanks

[before]

You'r welcome buddy! I'm looking forward to see you benching that 5GHz barrier

[C3]

Do you have vdroop mod on your mobo?

BTW: Great results

thanks

yap, I did the vcore and vdroop mods. For vcore I used an 20k vr and for vdroop an 50K vr.

[LittleDevil]

Try to find better cooling for NB and what vmch do you have?

regards

[mykeos]

LD,didn't you achieve 200mhz more on my cpu with same temps and vcore?and with a retail chip.I think an ES chip should go at least 5.2ghz on cascade...

[C3]

ES aren't inevitable better than retail chips. It depends on the chip itself.

[LittleDevil]

LD,didn't you achieve 200mhz more on my cpu with same temps and vcore?and with a retail chip.I think an ES chip should go at least 5.2ghz on cascade...

Yes but i had only vcore mod and original cooler on NB

thanks

[barzi]

I like the title of this thread ... very nice overclock!!

[Misko]

Have you any clue regarding the reboot issue at >1,85V?

Its I believe a protection from Asus, try to disable voltage monitoring in BIOS maybe u be lucky to do 1.85+ without reboot

[G H Z]

Thats some nice cooling

Hmm "Black box", I have heard that somewhere before

[sdumper]

any luck hitting 5ghz for a superpi?

[dinos22]

damn it
This is the real Blackbox

[LittleDevil]

Thanks for the hint,bro
I'll try it during my next overclocking session today or tomorrow

Did you reach 5GHz for SPI?

thanks

[DEVIL K-ce]

Nice cooling system

Try this mobo but only with vcore mod.

I used P5B Dlx only with vcore mod, and no problem when set >1.9V.

[Asazman]

jesus man, that's insane!

[C3]

Unfortunately,while removing the insulation a small transistor where the vdroop mod is soldered fell off. I try to repair it, if it's not possible no more benching in 2006
Next step will be 8800GTX SLI on a decent nF680i in 2007

[LittleDevil]

Unfortunately,while removing the insulation a small transistor where the vdroop mod is soldered fell off. I try to repair it, if it's not possible no more benching in 2006
Next step will be 8800GTX SLI on a decent nF680i in 2007

Bad news, we all hope that you will repair it

regards