Retail Q9650 Overclocking Thread

[zsamz_]

@ Papatsonis. Your way too lucky you can run vmch-1.625 @ 445/1187 with 8gb and your X38-DQ6

1.65 is alot of juice

[greg.m]

forgot to tell , with Turbo mode, not Extreme (for extreme need ~0.1+ volt additional the x38) , extreme saves about 2.5ms in latency and give a small boost in read , but doesn't worth the heat...

Nice sticks you have there Mine g.skill 1200 pi cant do much higher than 1240

[papatsonis]

neither mine (pi 8800) can go above 1220-1230 , till there are stable with minimum voltage from dq6 (1.89) but almost dont scale at all, had tried till 2.05 and saw increasing errors after 1.98v

[greg.m]

neither mine (pi 8800) can go above 1220-1230 , till there are stable with minimum voltage from dq6 (1.89) but almost dont scale at all, had tried till 2.05 and saw increasing errors after 1.98v

Thats gooood - for you - i paid probably the double for pi 9600

[papatsonis]

Hi Papatsonis!
I've a Q9650 from the same batch as yours with same VID of 1,1250V...
Currently i'm Prime64 and Linx64 stable at 4Ghz with 1,21V on a DFI Lanparty X48 LT T2R under water (Swiftech Apex Ultra kit)...
Very nice chip, but warm...
Water needed!
Bye

it seems they have identical behavior (at least @4ghz.. 1.216 here )

[In-Fluence]

I haven't tried to find vcore needed for 4GHz, but for 466x9=4.194GHz I need 1.25v, and for 480x9=4.32GHz, 1.3125v is needed. My vid is 1.2v but vcore needed is likely to be very similar judging by the way it scales. I'll have a stab later, just busy getting 4.4GHz stable with just 1.35v

[phsinc1]

Guys, today I removed my CPU and I noticed 2 pads on the CPU didn't have any pin marks, is that normal? I was getting some slow downs in prime95 so maybe that's related?

I marked them on this picture, they are the 14th and 15th pads from the right? what does these 2 pads are responsible for?

[E-mil]

Small update

wPrime @ 4662 MHz (validation)

[1nvisible]

^memory time sucks.

[Slag]

it seems they have identical behavior (at least @4ghz.. 1.216 here )

Yes, it really seems they have identical behavior!

I'm running it now @ 4Ghz with 4GB (2x2) of OCZ PC2 8500 Platinum Edition @ 1:1 (DDR2 891) with:

- timings 4-4-4-12,
- strap 333/667,
- Performance Level 7

with only 1.21VCore, 1.20VTT, 1.40V on MCH and 1.85V on DRAM.

Everest cache and memory benchmark average marks in these values:

- Read: 9045 MB/s
- Write: 9465 MB/s
- Copy: 8520 MB/s
- Latency: 55.0 ns

I've done accurate fine tuning on GTL+ and memory timings to gain stability with these low voltages and i think that i'll be able to handle this overclock even on summer...

DFI boards are so tricky to be fine tuned but when you have time and persistence it's a satisfactory goal!

Bye

[papatsonis]

nice!! awesome vMCH , ONLY 1.41!!!, either my X38 chipset , or the DQ6, cant do these speeds at such low voltage , or i miss some magical setting :/ , my stable are 445/1187 PL6 with 1.525 vMCH :/ , ive done extensive testing on all possible GTL adjustments (in fact only GTLRef 1 , cause the oher GTL except normal, refuses to boot)with no practical gain . Relaxing PL, didnt bring any substancial gain (perhaps, 0.025 vmch less - so no point) , tried to relax the x38, testing with 4gb ram only, neither that worked..

[grishenko45]

my q9650 is at 4.095Ghz - 455*9 @ 1.25v - ive got an asus p5q deluxe and 2*2gb corsair dominator 1066 ram - my cpu is 20 loops minx stable and 6hours p95 stable with cpu at 4.095 and ram at 1092mhz - all voltages have obviosly been increased...

for some reason when i got over 455 even by 1mhz it becomes unstable in games BSOD's on me an restarts my pc when running linx!!!! what u recon i need to increase to get it stable at 460mhz???

vcore - 1.256v gtl refs 0.660 + 0.660
cpu pll - 1.56v
vtt - 1.26v
vram - 2.14v
vNb - 1.24v

any help guys??

cheers

[Falkentyne]

Since a lot of you are pushing your Q9650's for quite awhile now, what's the voltage you guys have been able to use consistently without getting overclock degradation? (on air).

Has anyone used something like 1.45v over long periods of time?

[andressergio]

Since a lot of you are pushing your Q9650's for quite awhile now, what's the voltage you guys have been able to use consistently without getting overclock degradation? (on air).

Has anyone used something like 1.45v over long periods of time?

me...almost a year at 1,392 cpuz...benched for months on 1,56 high VTT and PLL...still passes same tests...

cheers
Sergio

[greg.m]

Since a lot of you are pushing your Q9650's for quite awhile now, what's the voltage you guys have been able to use consistently without getting overclock degradation? (on air).

Has anyone used something like 1.45v over long periods of time?

Low temps (everywhere - cpu, nb, mosfets etc.) is the key.

[andressergio]

Low temps (everywhere - cpu, nb, mosfets etc.) is the key.

+1 for that

[Hoss331]

my q9650 is at 4.095Ghz - 455*9 @ 1.25v - ive got an asus p5q deluxe and 2*2gb corsair dominator 1066 ram - my cpu is 20 loops minx stable and 6hours p95 stable with cpu at 4.095 and ram at 1081mhz - all voltages have obviosly been increased...

for some reason when i got over 455 even by 1mhz it becomes unstable in games BSOD's on me an restarts my pc when running linx!!!! what u recon i need to increase to get it stable at 460mhz???

vcore - 1.256v gtl refs 0.635+0.675
cpu pll - 1.56v
vtt - 1.26v
vram - 2.14v
vNb - 1.24v

any help guys??

cheers

I would trying raising the NB some first, but you may need some more vcore also. Are those gtls listed cpu and nb or just cpu, at those speeds I ran mine at 0.635 for both cpu gtls and auto for nb gtl.

[grishenko45]

I would trying raising the NB some first, but you may need some more vcore also. Are those gtls listed cpu and nb or just cpu, at those speeds I ran mine at 0.635 for both cpu gtls and auto for nb gtl.

i changed my cpu gtl refs to 0.660 for both the 1/3 and 2/4 values - nb gtl is on auto - im not sure what to do with that. i found with these cpu gtl refs i got more Gflops after running Linx

my nb is at 1.24 - and seems to be stable - i didnt want to raise it that much as its cooled with stock p5q deluxe heatsink and a fan at the side.

u recon then for an fsb of 460mhz - raise cpu from 1.275(BIOS) to about 1.285v? and nb to 1.26 - 1.28? the cpu pll is at 1.54 - i know that a high pll will kill a cpu so its ok at 1.54v - how high will it be ok to go? cpu is liquid cooled BTW.

[Hoss331]

For those speeds mine worked best at 0.635 for both cpu gtls, as I went higher (480s) the higher gtls worked better up to 0.655 for both. Auto on the NB gtl worked fine for me up to about ~470fsb than I set it to 0.665. 1.24NB is not alot especially with a fan on the heatsink and 1.54 pll is also fine. What vid is this chip?

[grishenko45]

For those speeds mine worked best at 0.635 for both cpu gtls, as I went higher (480s) the higher gtls worked better up to 0.655 for both. Auto on the NB gtl worked fine for me up to about ~470fsb than I set it to 0.665. 1.24NB is not alot especially with a fan on the heatsink and 1.54 pll is also fine. What vid is this chip?

i think my VID is 1.1725v.

i thought the cpu gtl was 2/3 of the vFSB/VTT?? so 2/3 of 1.26 is 0.840 = 0.660*1.26 = 0.8316.

is this completely wrong???? or do you just have to mess around with the gtl refs???

or do you set lower gtl refs for lower fsb (start on 0.635) then go higher to like 0.670 with a higher fsb?

help on this please!!

[1nvisible]

Ok here's mine at 7+ hours stable, doesn't seem to like voltage, any advice on where to go from here would be appreciated.


Edit: just re did 1280k with PLL 1.55v and pass, take it from there.

[Hoss331]

i think my VID is 1.1725v.

i thought the cpu gtl was 2/3 of the vFSB/VTT?? so 2/3 of 1.26 is 0.840 = 0.660*1.26 = 0.8316.

is this completely wrong???? or do you just have to mess around with the gtl refs???

or do you set lower gtl refs for lower fsb (start on 0.635) then go higher to like 0.670 with a higher fsb?

help on this please!!

0.635 is usually a good starting point with these chips at low to moderate fsb and may need a little more as fsb goes up. Every setup is a little different so you need to find out what yours likes best. Try this 456fsb with 1.2625vc, 1.54pll, 1.26vtt, 1.28nb, both cpu gtls at 0.635 and nb gtl on auto. Also do you know for sure if your ram will run stably up to 1100+? Have you tried dropping down to 1:1?

[Gaul]

q9550, with VID 1.265..........

MAX on TRUX

4.48 GH

http://valid.canardpc.com/show_oc.php?id=856772

[E-mil]

Small update

wPrime @ 4662 MHz (validation)

^memory time sucks.

I know it's sucks, but time (8,219 s) is good

q9550, with VID 1.265..........

MAX on TRUX

4.48 GH

http://valid.canardpc.com/show_oc.php?id=856772

nice core speed Gaul

[Gaul]

nice core speed Gaul

THANX, anyway u still better