Retail Q9650 Overclocking Thread

[LiquidReactor]

Sorta yea, the voltages 1.30 and lower generally have a slight overvolt and 1.34+ start undervolting some. 1.30 is really like 1.31 and 1.34 is like 1.33. And as for the drive strengths I never saw them make a difference in stability so I kept them at default 800/900, unless benching.

Ok, thanks for the info

BTW, what's the VID and batch # on your Q9650?

[Hoss331]

L827a945 1.15

[LiquidReactor]

Nearing on total 4.5Ghz stability on air. ACC does help a little bit, at least from my experience with my older Q9650, 800 > 900mv was equivalent of bumping vcore one notch.

ACC : 900/800/0/50
Cpu Vcore : 1.3975V
Cpu Term : 1.34
PLL : 1.57
Term Ref. : 0.836

Mch Core : 1.44
Mch Ref. : 0.916
Dram Voltage : 2.06

[In-Fluence]

That's a lovely low vcore for that speed - nice chip! You gonna bench it or at least try for higher fsb?

[OLDcomer]

CPU-Z 5GHz


Cinebench R11
Q9650@4950MHz 6.04pts

[In-Fluence]

Good clock oldcomer! I'm tempted to have another stab with my old Q9650 - snag is I only have the USB3P to run it on. I'm sure it'll be great for benching pi32m but don't know if this board can push as well as my UD3P rev1.6 (which now has another home). I guess trying won't harm it although it'll be on air (with lots of big fans) if I do. I think I need a pot and some LN2, but sounds too expensive for what it's worth....

[LiquidReactor]

That's a lovely low vcore for that speed - nice chip! You gonna bench it or at least try for higher fsb?

Only had it for a week so far but definitely going to push it to the limit. Once I get water, say 4.8Ghz 24/7 stable

Got 4.5Ghz Blend stable ( 8k - 4096k fft, 6200mb). Ambient temps were a bit higher then usual because of the really warm weather here. Thanks to Jorbl3r and his Q9650 4.5Ghz settings, I was having some issue with large fft stability, plugged in his numbers for Mch Core and Mch Ref and bam..no problem.

ACC : 900/800/0/50
Cpu Vcore : 1.3975V
Cpu Term : 1.34
PLL : 1.57
Term Ref. : 0.873

Mch Core : 1.42
Mch Ref. : 0.888
Dram Voltage : 2.06

[LiquidReactor]

Trying to push the chip to 4.55 but I keep getting restart / freeze issues. Should I increase MCH Clock Skew to 100ps from 50ps?

[Hoss331]

Try upping the cpu skew 50ps, that was what solved that problem for me at those speeds.

[LiquidReactor]

Try upping the cpu skew 50ps, that was what solved that problem for me at those speeds.

too early for that turns out. Just need to tinker with Cpu Termination and Mch Core / Ref values a bit more.

[roger_h99.nor]

L036B363 (no hits on Google!)
VID 1.2625 (CoreTemp)

Chip must have 1.31 to be P95 (small FFT) 4G stable.

Probably limited by my MB (P35)

[Q6600]

can someone help me get my q9650 stable @ 3.8ghz??

My mobo is an asus x38 ddr3 maximus extreme! I run my cpu 24/7 @ 3.6ghz 400x9 with NB temp at 32C idle but 3.8ghz makes my NB hot reaches 50C (altough cooled with an antec spot cool)

to get the mobo stable at 3.8ghz i have to pump 1.7+volts to my NB less than that it is unstable in gaming. FSB VTT is at 1.4v, CPU PPL 1.6v, CPU core 1.3v and Loadline Calibartion enabled is a must to eliminate vdroop!!

I use the corsair h70 with push/pull stock fans to cool my cpu As for the TIM i use the AC MX4!

My Q9650 Retail box!



My Current OC @ 3.6GHZ - 2hrs Prime95 stable, OCCT 1hr stable

[OCBalmang]

Your v core is way too low, and if you have the north bridge any higher than 1.58 you risk motherboard damage, your pll is not proper either I think I used 1.65 sometimes more, try also please list what timings your using on the ram, and just to be honest you should be using a q9650 on a p45 board to get its full potential out. I hope some of my input help as I've seen the worst of the batches do better than what you've provided you'll need to increase your v core to 1.42 if it works from there lower the v core by two or three intervals until it isn't stable.

[Q6600]

so you mean i need to set vcore to 1.42 for 3.8GHZ? isn`t cpu pll 1.65v too much for 45nm cpu? as for my northbridge it needs 1.7volts less than this it is unstable! My ddr3 ram is corsair DHX 1600mhz 9-9-9-24 stock timings 1.8v

Here are my current BIOS settings on my asus maximux extreme mobo..bios is v1302

3.8GHZ 430x9 Overclock settings

CPU Ratio Setting 9
FSB Frequency 430
FSB Strap to North Bridge Auto
PCIE Frequency 100

DRAM Timing Control Manual
DRAM Frequency DDR3-1720
DRAM Command Rate 1T

CAS# Latency 7
RAS# to CAS# Delay 7
RAS# Precharge 7
RAS# Active Time 20
RAS# to RAS# Delay Auto
Row Refresh Cycle Time Auto
Write Recovery Time Auto
Read to Precharge Time Auto

Read To Write Delay(S/D) Auto
Write to Read Delay(S) Auto
Write to Read Delay(D) Auto
Read To Read Delay(S) Auto
Read To Read Delay(D) Auto
Write To Write Delay(S) Auto
Write To Write Delay(D) Auto

DRAM Static Read Control Disabled
DRAM Dynamic Write Control Disabled

Ai Clock Twister Strong
Ai Clock Skew for Channel A Auto
Ai Clock Skew for Channel B Auto
Ai Transaction Booster Enabled
Boost Level 3

CPU Voltage 1.325 Actual reading > 1.304
CPU PLL Voltage 1.6 Actual reading > 1.664
North Bridge Voltage 1.8 Actual Reading > 1.792
DRAM Voltage 2.0 Actual Reading > 2.032
FSB Termination Voltage 1.4 Actual Reading > 1.312
South Bridge Voltage 1.1 Actual Reading > 1.104
Loadline Calibration Enabled
CPU GTL Reference 0.63x
North Bridge GTL Reference 0.67x
DDR3 Channel A REF Voltage Auto
DDR3 Channel B REF Voltage Auto
DDR3 Controller REF Voltage Auto
SB 1.5 Voltage Auto

CPU Spread Spectrum Disabled
PCIE Spread Spectrum Disabled

UPDATED!

[OCBalmang]

Something you should know 2.0 vdram is considered suicide on air , secondly you should consider I have stabilized many systems and set fires to enough systems to know what's safe and what's damaging. Your northbridge/mch is too high I don't even use that much for liquid nitrogen. Secondly you must read this whole section pages 1 to the end or don't bother overlooking unless you have the money to throw around or you could damage everything you have with the voltages your using....

Wanted to add something else yorkfield based chips can die to termination being 1.38 or higher your playing in danger atm..

[Q6600]

well 2.0v on this ram is ok according to corsair (ramguy) but 2.1v is the absolute maximum! as for my x38 chipset it is well known that it needs juice to stay stable and i saw people running this mobo on 1.7v red zone volts in the bios and according to intel spec this chipset temp limit is 90C and i never reached that much temp. the most i reach is 50c (cooled with antec spot cool) with with 1.7v when you say you dont even use that much voltage for LN i dont beleive you sorry remember x38 get hot soon and needs volts at high fsb

[OCBalmang]

You could very well be right since its x38 and all of us with q9650 or the extreme version used p45 ud3p motherboards to achieve great clocks. But honestly you really should go to p 45 if your having trouble with 425 fsb or greater . My qx9650 which I sold for its full retail cost because of what it could do, used ud3p mobo and could do 530 fsb with low termination and low volts ran very cool maybe you should consider it.

[Q6600]

You could very well be right since its x38 and all of us with q9650 or the extreme version used p45 ud3p motherboards to achieve great clocks. But honestly you really should go to p 45 if your having trouble with 425 fsb or greater . My qx9650 which I sold for its full retail cost because of what it could do, used ud3p mobo and could do 530 fsb with low termination and low volts ran very cool maybe you should consider it.

I tried to buy the ga-ep45t-ud3p p45 ddr3 mobo but it is discontinued! i heard that gigabyte will bring out new p45 ddr3 mobo in q2 2011

question: which is the best for OC the q9650? p45 under ddr2 or ddr3?

[X4er0]

Well i jumped on the bandwagon and my batch is L037B486 with VID 1.30000.

I clocked it stable on 4050MHz, 60 degrees on load, cooling is a lapped TRUE 120.

Gonna go for 42xxish for 24/7 and than i'm a happy boy!!!

edit: nope, my ram is the limiting factor, on 460 it crashed and it isn't the power, i even tried 2.0Volt on my RAM and no difference. So now it is 4050MHz, well it does 57Gflops in IBT on 4050MHz, i see people with 4200MHz and they have 58Gflops.

[Q6600]

I bought a second hand gigabyte ga-ep45t-ud3p p45 ddr3 mobo from ebay and it`s on it`s way to me! I will be using a pair of 2x2gb corsair xms3 dhx ddr3 1600 9-9-9-24 1.8v stock timings on the board. anyone knows if my ram will be good for overclocking with my q9650 on the ga-ep45t-ud3p? i did not opted for the ga-ep45-ud3p cause it is ddr2 and i have ddr3 ram atm. Is it true that the ga-ep45t-ud3p is picky on ddr3 ram?

[NoGuru]

I bought a second hand gigabyte ga-ep45t-ud3p p45 ddr3 mobo from ebay and it`s on it`s way to me! I will be using a pair of 2x2gb corsair xms3 dhx ddr3 1600 9-9-9-24 1.8v stock timings on the board. anyone knows if my ram will be good for overclocking with my q9650 on the ga-ep45t-ud3p? i did not opted for the ga-ep45-ud3p cause it is ddr2 and i have ddr3 ram atm. Is it true that the ga-ep45t-ud3p is picky on ddr3 ram?

Should work fine, just going to have to run it in 2T.

[Q6600]

Should work fine, just going to have to run it in 2T.

right now on my asus maximus extreme i run them at @ 1600mhz 7-6-6-20 1T..so the gigabyte ga-ep45t-ud3p should too

[X4er0]

right now on my asus maximus extreme i run them at @ 1600mhz 7-6-6-20 1T..so the gigabyte ga-ep45t-ud3p should too

Only way to find out is to try it out, is it a new Q9650 like mine, i bought mine couple of weeks ago, production date end 2010 with a high VID, i can't get mine over 4200MHz, i even bought new ram (dominator GT 2000MHz).

My proc needs in bios 1.49Volt but temps are not extreme, in IBT on 100% load it rises up to 67 degrees celsius.

[Q6600]

my q9650 pack date is: 5/3/2010 with 1.2250 vid batch # L009B453 and bought it 9months ago

[Q6600]

Only way to find out is to try it out, is it a new Q9650 like mine, i bought mine couple of weeks ago, production date end 2010 with a high VID, i can't get mine over 4200MHz, i even bought new ram (dominator GT 2000MHz).

My proc needs in bios 1.49Volt but temps are not extreme, in IBT on 100% load it rises up to 67 degrees celsius.

your gigabyte mobo uses ultra durable 2 and does not have a 2oz copper pcb maybe you need a better board like my soon to come gigabyte GA-EP45T-UD3P which uses a 2oz copper pcb and uses ultra durable 3 technology which helps keep the board cooler