ASUS P5N-E SLI 650i Thread

[TriBeCa]

bioshock caused 2 BSOD reboots, first in my sig OC and then with RAM at 4-4-4-12-30 timings, so this OC isn't stable yet.

any brillian ideas would be greatly appreciated. it's either too much voltage on the CPU, too little voltage on the cpu (seems hard to believe, but ya never know), RAM instability, or part of the boards FSB hole. once my %$^#ing thumb drive gets back from corsair RMA (their RMA department is really wacky...first their system failed to generate and send me an RMA number so I had to call them back, and then i still hadn't heard from them after my returned part had been there for 10 days...I called them yesterday and they said it'd ship at the end of the day and I'd get an email with a tracking number, but I still haven't gotten that) and I have some time on my hands, I'll try to get stable properly at 3.4GHz. For now I'm back to 3GHz.

One interesting thing was that when I tried to go back to 3GHz but left my RAM at 425 (850 ddr), I couldn't post. must be something funny about the FSB:RAM divier that created.

[Freddy_Bobbins]

hey everyone this is my first post in this thread and im really exited about it because i now have a P5N-E SLi, so anyways, with my sig rig im running, (1500)375X8=3000MHz with a NBvolt=1.5xx vcore=1.25 vdimm=2.0x timmings of 4-4-4-12-2T-30. i have my mem and fsb linked/synked so the mem is only running at 375x2=750mhz
so i cant get my fsb to up around 1550, or (387.5)
i tried uping NBvolt, vdimm, vcore, im new to intel so i dunno how many volt i can run through this proc. and general stuff like that. so anywho, what do u think i can do?

[TriBeCa]

check out the guide in my sig. 1550 is probably in the FSB hole of the board, although you'll likely need more vcore to post much higher than you're at now. i wouldn't recommend higher vNB except for suicide runs. try following the FSB overclocking section of the guide to find out what speeds you can post at, then go back to where you are now and try posting at those speeds, upping vcore as necessary. as long as your cores are under the thermal rating for your chip (61.4C) you can go up to 1.5vcore safely, and even high with minimal risk.

[Ravin]

Here it is....the official reason that the P5NE-SLI craps out on a quad OC.....The power is 3 phase. Compared to other quad compatible boards this is really low- most have 6-8 phase power.


Meaning....yes, you do get the volts you are asking for, but the amperage is likely to flux wildly when you start asking for more power. The problem is not limited to the Vcore- wat is actually happening is when you crank the volts for one component, the current is redirected away from the others.

The Vdroop mods may help to reduce the current flux to a point, but there is no way around having 3 phase power.

[Christiaan]

Originally Posted by Ravin

Here it is....the official reason that the P5NE-SLI craps out on a quad OC.....The power is 3 phase. Compared to other quad compatible boards this is really low- most have 6-8 phase power.


Meaning....yes, you do get the volts you are asking for, but the amperage is likely to flux wildly when you start asking for more power. The problem is not limited to the Vcore- wat is actually happening is when you crank the volts for one component, the current is redirected away from the others.

The Vdroop mods may help to reduce the current flux to a point, but there is no way around having 3 phase power.

Do you think we'll have more success with the 45nm quads coming out in January? Since they should be using less power.

[TriBeCa]

Originally Posted by Ravin

Here it is....the official reason that the P5NE-SLI craps out on a quad OC.....The power is 3 phase. Compared to other quad compatible boards this is really low- most have 6-8 phase power.


Meaning....yes, you do get the volts you are asking for, but the amperage is likely to flux wildly when you start asking for more power. The problem is not limited to the Vcore- wat is actually happening is when you crank the volts for one component, the current is redirected away from the others.

The Vdroop mods may help to reduce the current flux to a point, but there is no way around having 3 phase power.

so this means you should be able to push your OC further if you can run other components on less power, right? and if you run fans off the PSU directly instead of the board plugs?

[Perry]

I think I'll reseat the northbridge heatsink tonight with some AS5 samiched (hehehe) in between.

I've searched here and on the intarwebz to try and find how to remove it but 100% fail.

...I have to stop typing like that.

Do any of you who have removed this before have any tips or instructions because I screw it up?

[Ravin]

Originally Posted by TriBeCa

so this means you should be able to push your OC further if you can run other components on less power, right? and if you run fans off the PSU directly instead of the board plugs?

One would assume so yes. Currently the only fan plugged in to my mobo is for the CPU.

Originally Posted by Perry

Do any of you who have removed this before have any tips or instructions because I screw it up?

There are TIM removal kits. These basically include an oil based solvent (goo-gone, the orange smelly stuff) and a VOC based solvent (TCE, PCE, denatured alcohol, isopropyl alcohol, ethanol). First clean with the oil solvent. If you're hard up you can use any cooking oil instead- just be neat about it. Wipe all excess away and then use the VOC solvent to remove the oil residue. Allow 15 minutes dry time, apply AS5.

Edit: I'd worry more about which VOC solvent to use. TCE is the best- but it is HIGHLY HAZARDOUS and not easy to obtain. Just make sure that any oily residue is removed before applying AS5.

[Gauvenator]

Originally Posted by Ravin

Here it is....the official reason that the P5NE-SLI craps out on a quad OC.....The power is 3 phase. Compared to other quad compatible boards this is really low- most have 6-8 phase power.


Meaning....yes, you do get the volts you are asking for, but the amperage is likely to flux wildly when you start asking for more power. The problem is not limited to the Vcore- wat is actually happening is when you crank the volts for one component, the current is redirected away from the others.

The Vdroop mods may help to reduce the current flux to a point, but there is no way around having 3 phase power.

Nice job finding that out, good info rep+

Where did you find that out?

[TriBeCa]

Err...I thought he was asking how to get the NB itself off.

You need to remove the board and use a pair of needlenose pliars (or even regular pliars, if you're careful) on the clips on the back of the board. Be careful to grab the ENTIRE end of the clip, or you'll crush and misshape the clip and make it even hard to get off. However, you also need to be careful not to scratch the back of the board.

Not to scare you, this is a pretty easy process. But it is possible to mangle the clip so badly that it won't stay in when you reseat the NB. Just make sure that before you squeeze the pliars, the pliar ends are basically touching the board, but without actually excerting any pressure on the board your self. And if you do scratch it, don't panic. I've put tiny little scratches on the back of two of my boards with no adverse effects, and ASUS even accepted RMA's on both of them.