The E0 Q9550 SLB9V thread (finally!)

[vws]

From what I've read (i can't for the life of me find the source again, but it was in several threads), it seems that the only way to be sure which one will do higher fsb on quads is by knowing if the motherboard you buy contains the newer revision of the P45 chipset. Supposedly there are 2 versions, and it's the later one that allows people to obtain ludicrous fsbs, even with quads.

Thanks Les_Paulde, your feedback is helpful! Seeing as how both Extreme & DQ6 have gone through almost the same BIOS update cycles I think both boards should behave similarly under the same settings - except that the Extreme allows wider voltage range. BTW, I think you meant A2 and A3 revisions of the P45 chipset, correct? Do you happen to know what most people have got from the Extreme lately? Hopefully they're all A3 now?

[Lewis23]

awesome

[cencik]

les_paulde impresiv results, push this baby to the limitos(no rush). 2 questions in my mind. Your VID and do you feel(see) any benefits between 4.0GHz<4.5GHz in real world application,games,GPU OC?
I discovered that when LLC is disabled(X38) i can run lower NB,CPU voltage, much lower FSB VTT. Now just 1.26v. Maybe it's my high but system seems to be more responsive and overall temperature is lower. Soon i need to do vdrop mod and maybe set ram to 1:1 PL10 for max FBS just to see if i can accomplish my goal 490X8.5 stable. From now i just start my OC from the beginning.TBD,TBC

[les_paulde]

les_paulde impresiv results, push this baby to the limitos(no rush). 2 questions in my mind. Your VID and do you feel(see) any benefits between 4.0GHz<4.5GHz in real world application,games,GPU OC?

Okay okay, I'm working on it!

The VID of my chip is 1.25v.

I haven't been able to crawl up to 4500Mhz yet, but I have successfully reached and benched at 4403Mhz. I must say that honestly, while the differences in feel between 4Ghz and 4,5 are small, they are definitely noticeable. Windows boots up faster and the overall system seems more responsive. But I guess with a bandwidth of >10,000mb/s on both write and copy, this could make sense... 3dmark06 and Vantage both definitely scale up their cpu points nicely with higher frequencies though, so the further you push it the better it seems.

Hope I managed to answer your question?

[adamsleath]

mine:
q9550 E0@4.03GHz@1.30V L837B058 (Malay)
474x8.5
P5Q-Pro 1613BIOS LLC enabled
coretemp 0.99.4 reads: 1.2125V

[//GobliN//]

I got my Q9550E0 today. Pack Date: 02/04/09 Batch L830A956 Vid:1.2500
480X8.5 @1.3500Vcore Zalman CNPS 9700 I'll try to lower it but I have doubts. It's been stable so far
Room temp 29 heater is on as Istanbul is freezing cold
I've tried 500fsb and wasnt able to make it stable no matter what voltage I give Nb it boots then blue screen. I know it is not the mobo as I overclocked my E8400 525x8 and used 7/24 without any issues. need more voltage need serious cooling I think...


and a bench done today all on air vga on stock.

[sabe]

Goblin: If your motherboard can handle a C2D at 500FSB+.... It is a completely different situation for a C2Q

[//GobliN//]

most people say is it is not easy to pass 500fsb wall on quads.and quads really need high Nb voltage for over 500fsb, while I was tryin for 500fsb I was only able to boot when I set NB voltage to 1.44. I'd better keep on trying.

[les_paulde]

What are your exact voltages actually? (vtt, vMCH, pll, vCore)
Straps?

[ci2kla]

most people say is it is not easy to pass 500fsb wall on quads.and quads really need high Nb voltage for over 500fsb, while I was tryin for 500fsb I was only able to boot when I set NB voltage to 1.44. I'd better keep on trying.

Are High FSB i.e. 500 on quads really need high vNB?

Ans: Yes for X38/X48 and NO for P45.

I order to get my Q9650 Stable I need nearly 1.7v vNB
compare with dual cores, E8500, need 1.65v vNB to Pass 10 loop IBT @ 600FSB.

[les_paulde]

Are High FSB i.e. 500 on quads really need high vNB?

Ans: Yes for X38/X48 and NO for P45.

I totally agree, I only need 1,32v on vNB for 500 * 8,5, fully stable, even with 4Gb of ram and crossfire.

Here are my voltages in case it may help anyone:



(although the screenie currently only shows ~1hr of prime, this has been fully tested >10hrs)

[//GobliN//]

What are your exact voltages actually? (vtt, vMCH, pll, vCore)
Straps?

CPU Voltage: 1.3500 LLC enabled 1.347-6 @load
CPU GTL Voltage Reference (0/2): 670
CPU GTL Voltage Reference (1/3): 670
CPU PLL Voltage: 1.62
FSB Termination Voltage: 1.28
DRAM Voltage: 2.16
NB Voltage: 1.38

Are High FSB i.e. 500 on quads really need high vNB?

Ans: Yes for X38/X48 and NO for P45.

I order to get my Q9650 Stable I need nearly 1.7v vNB
compare with dual cores, E8500, need 1.65v vNB to Pass 10 loop IBT @ 600FSB.

with my old E8400 I only need to set NB to 1.28 525 fsb daily usage. But now you have said 1.7nb all things are more clear

[les_paulde]

CPU Voltage: 1.45 LLC disabled 1.347-6 @load (as 1.45 LLC disabled should give you similar load voltage)
CPU GTL Voltage Reference (0/2): 670
CPU GTL Voltage Reference (1/3): 630
CPU PLL Voltage: 1.62
FSB Termination Voltage: try up to 1.4v
DRAM Voltage: 2.16
NB Voltage: 1.38 try to keep .02v below VTT

try suggestions in bold, they're working great for me.

[ci2kla]

CPU Voltage: 1.3500 LLC enabled 1.347-6 @load
CPU GTL Voltage Reference (0/2): 670
CPU GTL Voltage Reference (1/3): 670
CPU PLL Voltage: 1.62
FSB Termination Voltage: 1.28
DRAM Voltage: 2.16
NB Voltage: 1.38




with my old E8400 I only need to set NB to 1.28 525 fsb daily usage. But now you have said 1.7nb all things are more clear

1.7vNB is for X48 not for P45...

[//GobliN//]

I'll give it a try now.

[0verl0ad]

I had a little bit fun with my q9550 ^^


Just air cooled with great temps

[vws]

I had a little bit fun with my q9550 ^^

Just air cooled with great temps

Amazing temps even with Tj.Max=100, at 1.344v and full load @ 4025MHz... now are you catching a cold after this?

[0verl0ad]

Amazing temps even with Tj.Max=100, at 1.344v and full load @ 4025MHz... now are you catching a cold after this?

Actually not.
My windows was closed and the roomtemp about 18°c
Like nearly every day ^^

[0verl0ad]

I still use an air cooler ^^

This one
http://www.xsreviews.co.uk/images/nirvana/stock.jpg

I´d like to know what i can reach under water

[sabe]

Decided to test my Q9550 on a A3 rev board, just threw in some voltages, here it is...

1.32V NB, 1.25V VTT, 8GB RAMs

[les_paulde]

Decided to test my Q9550 on a A3 rev board, just threw in some voltages, here it is...

1.32V NB, 1.25V VTT, 8GB RAMs

Nice and easy going! Which mobo is this on?

[sabe]

This is on a replacement board DFI P45-T2RS PLUS I got as a loan because my DFI JR P45 died :P

[vws]

This is on a replacement board DFI P45-T2RS PLUS I got as a loan because my DFI JR P45 died :P

Question for you sabe -- is it pretty much given that most DK PLUS boards have the A3 chipset lately, do you know?

[sabe]

Question for you sabe -- is it pretty much given that most DK PLUS boards have the A3 chipset lately, do you know?

I couldn't really give you an answer on this one, it really depends on how much the retailer moves his stock and whether he always moves out the old boxes first. But I've bought this board on 2 other occasions new to help friends out with their rigs and it was both A3.

[//GobliN//]

les_paulde In spite of your helps mobo and cpu failed at 500 fsb. there is something else limiting me I think.Thank you for your help. my max daily fsb 483 FSB x8.5 memory @ 1160 mhz. after 3.5 hours of prime I stopped it. It ended without errors and warnings