Asus P5n-E sli FSB wall?

10th November 2008, 02:37

so I guess I'll start with system specs:

Core 2 Quad Q6600
2x XFX 8800GT 512mb in SLI
ASUS P5N-E SLI
Crucial Ballistix PC2-6400 2GB 2X1GB DDR2-800 CL4-4-4-12
Corsair 750W PSU

so Basically I cannot get this system to boot at 1200fsb or over for the life of me. I have even tryed underclocking the ram and cpu and cranking the NB voltage and it still wont boot XP at 1200fsb. I even tryed going past 1200fsb to see if it was a fsb hole but no luck either. I have tryed many different bios version including the newest 1301 bios. System is rock solid at stock speeds. I have set memory timings manually too. I honestly cannot think of anything that should be stopping me going over 1200fsb, most other people with this board see healthy overclocks well over 1400fsb. Any ideas? do I have a lemon?

piotke · 10th November 2008, 07:10

Guess it's rather the CPU then the mainboard.

10th November 2008, 07:27

I even dropped the multiplier on the CPU to underclock it. Seems like the board just doesnt like the fsb. I've never heard of anybody else not being able to break 1200fsb on this board. Seems strange...

piotke · 10th November 2008, 07:37

Those breaking 1200, was that with dual or quad core.

But indeed, 300/1200 is very low, even for a quad core. Diid you raise pll voltage ?

10th November 2008, 17:18

I have seen many people breaking 1200 with dual and quad cores. But as I was saying, I even underclocked the cpu and ram and raised the fsb (I can run unlinked) and It still would not boot xp. I raised the voltage on everything but it still refused to budge. I also tryed running the cpu/ram linked and with a divider and the system would still not boot at that speed. I'm starting to think I just have a dud here...

8th December 2008, 14:34

Many older nForce boards have big problems with quadcore overclocking. Even more voltage won't help at this point because the chipset is probably at it's end - what does not mean that you can't reach a higher FSB with a dual core CPU.

Which BIOS version do you use?

8th December 2008, 21:35

I have tryed the latest 1301 bios and just about every previous revision. This thing is damn stubborn, I have even had some stability issues at 2.67ghz.

leeghoofd · 21st December 2008, 13:30

Most users on extremesystems replaced the NB heatsink with an aftermarket product and voltmodded it... though you are really mobo limited here for quad OC'ing and most of them fried their boards running OC'ed quads... board seems to run fine with duallies though

21st December 2008, 15:42

I've given up with this bloody thing. Now I'm not sure whether to swap my quad for a faster dual and try this mobo again or just get another board and Overclock the quad. What board is sli and still a good bang for buck for overclocking? I'd really like another board that allows memory and cpu to be unlinked.

leeghoofd · 21st December 2008, 17:11

I think 780i is your only option mate... I had a nice board with the EVGA one and with 2 8800GTS 512 in SLI... it had no problem to clock my Quad up to 450FSB and ram at 1200mhz... but any 780i board will set you back 220 euro's

Some have praised 750i FTW from eVGA but opinions are mixed with quads...

10th November 2008, 02:37	#1
swinger Posts: n/a	Asus P5n-E sli FSB wall? so I guess I'll start with system specs: Core 2 Quad Q6600 2x XFX 8800GT 512mb in SLI ASUS P5N-E SLI Crucial Ballistix PC2-6400 2GB 2X1GB DDR2-800 CL4-4-4-12 Corsair 750W PSU so Basically I cannot get this system to boot at 1200fsb or over for the life of me. I have even tryed underclocking the ram and cpu and cranking the NB voltage and it still wont boot XP at 1200fsb. I even tryed going past 1200fsb to see if it was a fsb hole but no luck either. I have tryed many different bios version including the newest 1301 bios. System is rock solid at stock speeds. I have set memory timings manually too. I honestly cannot think of anything that should be stopping me going over 1200fsb, most other people with this board see healthy overclocks well over 1400fsb. Any ideas? do I have a lemon?

10th November 2008, 07:10	#2
piotke [M] Reviewer Join Date: Jun 2002 Posts: 5,003	Guess it's rather the CPU then the mainboard. __________________ .

10th November 2008, 07:37	#4
piotke [M] Reviewer Join Date: Jun 2002 Posts: 5,003	Those breaking 1200, was that with dual or quad core. But indeed, 300/1200 is very low, even for a quad core. Diid you raise pll voltage ? __________________ .

21st December 2008, 13:30	#8
leeghoofd [M] Reviewer Join Date: Dec 2008 Posts: 3,209	Most users on extremesystems replaced the NB heatsink with an aftermarket product and voltmodded it... though you are really mobo limited here for quad OC'ing and most of them fried their boards running OC'ed quads... board seems to run fine with duallies though Last edited by leeghoofd : 21st December 2008 at 13:33.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
ASUS Gives Rampage III Extreme 4-way SLI Capability with ROG Xpander	jmke	WebNews	0	20th May 2010 08:39
SLI licensed to run on X58 mainboards from ASUS, EVGA, MSI, Gigabyte and DFI	jmke	WebNews	0	22nd October 2008 13:22
ASUS Striker II NSE nForce 790i SLI Motherboard	jmke	WebNews	0	29th May 2008 18:23
ASUS P5N-E SLI S775 Motherboard Review	jmke	WebNews	0	26th July 2007 09:48
Asus P5N32-E SLI Plus vs Abit IN9 32X-MAX	jmke	WebNews	0	5th April 2007 09:14
ASUS P5N-E SLI 650i Motherboard	jmke	WebNews	0	26th March 2007 11:32
Asus P5N-E SLI nForce 650i SLI	jmke	WebNews	0	26th January 2007 10:52
AMD AM2 Motherboard shootout: EPoX MF570 SLI vs ASUS M2N32-SLI	jmke	WebNews	1	22nd May 2006 08:39
Asus A8N-SLI Deluxe - SLI Part 1	Sidney	WebNews	0	27th January 2005 20:28
NVIDIA SLI Revolution Begins with Launch of ASUS A8N-SLI	jmke	WebNews	0	17th November 2004 15:43

10th November 2008, 07:27	#3
swinger Posts: n/a	I even dropped the multiplier on the CPU to underclock it. Seems like the board just doesnt like the fsb. I've never heard of anybody else not being able to break 1200fsb on this board. Seems strange...

10th November 2008, 17:18	#5
swinger Posts: n/a	I have seen many people breaking 1200 with dual and quad cores. But as I was saying, I even underclocked the cpu and ram and raised the fsb (I can run unlinked) and It still would not boot xp. I raised the voltage on everything but it still refused to budge. I also tryed running the cpu/ram linked and with a divider and the system would still not boot at that speed. I'm starting to think I just have a dud here...

8th December 2008, 14:34	#6
mAlkAv!An Posts: n/a	Many older nForce boards have big problems with quadcore overclocking. Even more voltage won't help at this point because the chipset is probably at it's end - what does not mean that you can't reach a higher FSB with a dual core CPU. Which BIOS version do you use?

8th December 2008, 21:35	#7
swinger Posts: n/a	I have tryed the latest 1301 bios and just about every previous revision. This thing is damn stubborn, I have even had some stability issues at 2.67ghz.

21st December 2008, 15:42	#9
swinger Posts: n/a	I've given up with this bloody thing. Now I'm not sure whether to swap my quad for a faster dual and try this mobo again or just get another board and Overclock the quad. What board is sli and still a good bang for buck for overclocking? I'd really like another board that allows memory and cpu to be unlinked.

21st December 2008, 17:11	#10
leeghoofd [M] Reviewer Join Date: Dec 2008 Posts: 3,209	I think 780i is your only option mate... I had a nice board with the EVGA one and with 2 8800GTS 512 in SLI... it had no problem to clock my Quad up to 450FSB and ram at 1200mhz... but any 780i board will set you back 220 euro's Some have praised 750i FTW from eVGA but opinions are mixed with quads...