Soldato
Couldn't google it, can ya link me?pegasus1 said:
** The Official ASUS P5N-E SLI & Ultra 650i Thread **
- Thread starter torrentthief
- Start date
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hi guys, I'm finding this board a little troublesome to overclock. I’ve followed WJA96 quick setup on page 11. I've been gradually upping the QFSB from my base point of 1200 with 48mhz increments as WJA96 recommended. I'm unlinked at the moment with my ram at its rated speed and latencies of 333 3-3-3-8 and stickin with 2t for the mo. well I tried upping the FSB...
1248- booted
1296- booted
1344- couldnt boot
1392- couldnt boot
1440- booted
1488- couldnt boot
so I'm stuck at 3.24ghz (1440 fsb) which is stable but the overclocking behavior of this board is very strange. It seems it only likes certain values used for its QFSB, and the ones it doesnt like fail to reboot, I get it into windows by cold booting I see the QFSB is knocked down to 1333 every time.
my e6600 is running no more than 40C on water with other temps lookin good. Voltages have all been upped a tad. vcore 1.4, chipset 1.5**
could the board be using unusual dividers while trying to keep the ram at its rated speed when I up the QFSB?? the ram sometimes wonders around with each different QFSB value in unlinked mode.
1248- booted
1296- booted
1344- couldnt boot
1392- couldnt boot
1440- booted
1488- couldnt boot
so I'm stuck at 3.24ghz (1440 fsb) which is stable but the overclocking behavior of this board is very strange. It seems it only likes certain values used for its QFSB, and the ones it doesnt like fail to reboot, I get it into windows by cold booting I see the QFSB is knocked down to 1333 every time.
my e6600 is running no more than 40C on water with other temps lookin good. Voltages have all been upped a tad. vcore 1.4, chipset 1.5**
could the board be using unusual dividers while trying to keep the ram at its rated speed when I up the QFSB?? the ram sometimes wonders around with each different QFSB value in unlinked mode.
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Hesky82 said:
I've got my vCore set to 1.57V and NB set to max to run stable. Any lower and I can't run 3600 (400x9 1600 QFSB) stable.
Currently using water cooling at its at 38ºC idle.
Maybe try upping your vCore?
JP
EDIT:
Thought I'd list my BIOS settings:
VCore Voltage [1.525V]
Memory Voltage [2.085V]
NB Core [1.563V] 'forgot I had set it a notch down from max
VCore Offset Voltage [+100mV] 'note this brings my VCore to 1.57V
FSB - Memory Linked Mode [Unlinked]
FSB (QDR), Mhz [1600]
Mem (QDR), Mhz [800]
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Soldato
Hesky82 said:
Raise the QDR to 1707 so you are over the 425 fsb threshold
It goes against the grain a bit since we are always told to bump things up slowly to prevent any risk of damage. You must make the leap to clear the rocks
Stop booting with 9x multipler , you can alter this in windows anyway and you should treat this seperately from the highest fsb you are presently trying to find.
You might have a lot of trouble getting 9x425 but first see if you can do 6x425 and take it from there. You can fine tune the ram, multipler and fsb to whichever suits you best later on, once you know what is possible.
Btw Im looking for someone to compare video encoding performance with at like for like cpu speeds. I have slow memory on async and I wonder how much it actually affects performance outside of superpi. Video encoding is my most real and demanding app, at present it appears to be unthrottled
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silversurfer said:Raise the QDR to 1707 so you are over the 425 fsb threshold
It goes against the grain a bit since we are always told to bump things up slowly to prevent any risk of damage. You must make the leap to clear the rocks
Stop booting with 9x multipler , you can alter this in windows anyway and you should treat this seperately from the highest fsb you are presently trying to find.
You might have a lot of trouble getting 9x425 but first see if you can do 6x425 and take it from there. You can fine tune the ram, multipler and fsb to whichever suits you best later on, once you know what is possible.
Btw Im looking for someone to compare video encoding performance with at like for like cpu speeds. I have slow memory on async and I wonder how much it actually affects performance outside of superpi. Video encoding is my most real and demanding app, at present it appears to be unthrottled
Thanks guys, well I thought it best to go back to old school and keep the cpu and ram linked. well I found that any fsb value I used ran with no issues this way, ones I had problems with unlinked worked fine linked.
running at 3.6ghz 1:1. with the vcore set to 1.4v, 1.392v and 1.37v under load in speed fan.
Much to tweak, havent even touched the ram timings yet. I'm just finding the board a little bit flaky. Anyone had these issues with bios 202?? might reflash.
I daren't use unlinked mode atm
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jp.pilot said:
Ive read people find 401 a better bios but I'd like to know specifically what improvements it brought. I mean what did you find wrong with the original 202 bios.
Cheers
Soldato
Thats a big screenshot mama 
So all you did really was set it to linked and its more stable? If you got this far with 0202 I would suggest there is nothing wrong with it
I shall have to see if I can quickly match you with mine unlinked. Is yours orthos stable?
QDR is 1799 to avoid the 0 and unlinked with the ram at stock speed. I tried to push it a bit further but it was not liking it, clockgen also was not good this time.
On the voltage graph you can see how the machine starts off on a high of 1.55v The first blip is where I go from 6x to 8x and the second is superpi running on the single core
So all you did really was set it to linked and its more stable? If you got this far with 0202 I would suggest there is nothing wrong with it
I shall have to see if I can quickly match you with mine unlinked. Is yours orthos stable?
QDR is 1799 to avoid the 0 and unlinked with the ram at stock speed. I tried to push it a bit further but it was not liking it, clockgen also was not good this time.
On the voltage graph you can see how the machine starts off on a high of 1.55v The first blip is where I go from 6x to 8x and the second is superpi running on the single core
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A question guys, my friends just built a similar setup with the p5n-e Sli. When you set the memory to linked and up the QFSB from its default (1066 is it) the ram speed jumps up so he's always set it to unlinked. If you set the QFSB to 1600 with linked ram - doesn't the ram speed go to 1600, or does it run at the spec for PC6400 memory?
Soldato
I've found that too, I have to run unlinked otherwise the RAM frequency would be miles too high.-Mike- said:
Soldato
That's what i thought and maybe it's right. It's just when I set linked up on a 1400 QSB (350FSB, 700DDR), it wouldn't boot, yet when I set it to unlinked and put 700DDR in, i'm good to go. Somethings not right with the settings.clv101 said:
You also get the following options with linked, 1:1 and Sync Mode. I thought they were the same thing, but when trying them, they seemed different. I'm currently running Orthos ATM, so can't really test further until later.
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linked in sync mode will give you that yeah, 1:1 will give you exact equal mem and cpu frequencies it seemsclv101 said:
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Just point him to this thread, this board seems to have a few quirks in its setup which aren’t to obvious and can hold you back right from the start.
-Mike- said:
Thanks to you I realised I could run my memory @ 1:1
But then found that it was unstable...superpi was failing and so was Orthos after a few seconds.
So ran Windows memtest! which threw up errors straight away, was begining to think I had dodgey Geil memory, Then I remembered about the old Yellow/Black slots so changed it to run in the black ones and it all perfect again running at 1:1
EDIT
Its 1:1 sync
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Soldato
-Mike- said:
There are at least 3 'recipes' on these forums and they work with varying degrees of success. I'm running 450x8 on an E6600 totally stable and I'm still using the 0202 BIOS because no-one has ever shown me any practical improvement with the 0401 BIOS and 0307 is reputed to be a nightmare. The real trick seems to be in the Northbridge cooling. I'm pretty sure anyone who is getting a 50% overclock with Orthos stability is actively cooling the Northbridge.
It's a mark of how high user's expectations are now that they complain bitterly if they cannot overclock a processor by between 50 and 100%. I think it does go to prove that there is very little point in buying an E6600 when an E6300 will do 3.6GHz in the same motherboard.
They're not flaky, they need tweaking.