ASUS P5N-E SLI 650i Thread

[Ravin]

Originally Posted by Perry

Part of the reason why I went for this board is because of the dual IDE headers so I could keep all of my older hard drives and it would accept a CPU with a 533 FSB so if I were to blow it I'd either have to get the same mobo or a new one plus a new CPU.

...that second scenerio won't happen.

Snap....You have an 805. I don't think that you'll need to worry about the Vdroop mod- you'll max the CPU without going 1.6V, and your FSB is half what mine is stock. Just get a good cooler for that blast furnace.

Edit: Ditto on the dual IDE headers. I did not want to replace my CDR, DVDRW/CDRW, and 2X200 Gb Hdds.

Nice Avatar!

[TriBeCa]

Originally Posted by Asce

Me, it helped me to lower my vcore. Theres an image link in my sig to show you where you need to do the pencil mod as well.

Just checking...are there 4 connections I see it on there? Any other advice you can give? Kind of pencil to use, etc. etc.

Originally Posted by Ravin

As long as you have an ohm meter to check the resistance of your mod there shouldnt be any conscern for damaging the board. Personally I'd be more worried about my CPU that cost 3X as much. Meh, if I kill the P5N-E, I'll just go get a p35/X38 board.

...and if I don't have an ohm meter? I take it that what you're saying is you need to check that the resistance is high enough that you're not actually shorting it.

[Ravin]

Originally Posted by TriBeCa

Just checking...are there 4 connections I see it on there? Any other advice you can give? Kind of pencil to use, etc. etc.



...and if I don't have an ohm meter? I take it that what you're saying is you need to check that the resistance is high enough that you're not actually shorting it.

I like using a 4B pencil. I've also used 2B and 2H- although B works better.

Yea- you want to make sure that you have some resistance left after the mod. Too much graphite will overvolt your chip and may burn out the MOSFETS by drawing too much current (pretty unlikely unless you really leave a lot of graphite).

[Asce]

Originally Posted by TriBeCa

Just checking...are there 4 connections I see it on there? Any other advice you can give? Kind of pencil to use, etc. etc.



...and if I don't have an ohm meter? I take it that what you're saying is you need to check that the resistance is high enough that you're not actually shorting it.

Use something like a 2B pencil. Its the one thats coloured in yellow in my sig link that you need to pencil. Best way to do this, is trial and error. Just pencil it in a bit at a time and then fully load the CPU and then use the ohmmeter on one of the vcore mosfets

[Ravin]

http://www.xtremesystems.org/forums/...=127528&page=3

Page discussing the pencil and hard mod for Vdroop- and what final resistances should be. IMO I'd try the pencil mod, and if the results are good move on to the hard mod.

[TriBeCa]

Ok...well I'm gonna have to wait 'till I feel like buying an ohm meter or I can find one to borrow.

Anyone know anyone in the NYC area who might loan me one for a weekend?

[Asce]

Any DIY store?

[Perry]

Originally Posted by Ravin

Snap....You have an 805. I don't think that you'll need to worry about the Vdroop mod- you'll max the CPU without going 1.6V, and your FSB is half what mine is stock. Just get a good cooler for that blast furnace.

Edit: Ditto on the dual IDE headers. I did not want to replace my CDR, DVDRW/CDRW, and 2X200 Gb Hdds.

Nice Avatar!

Well, my overclock is stuck at 3.4Ghz and my memory is still at 960mhz. I think I'll re-run my cables (it's been a mess since I built the rig), reseat the northbridge heatsink with some AS5 (any ideas how how best to apply it since this isn't the usual CPU application) and toy with the northbridge voltage (eek!).

While all of those may help with the CPU overclock will any of that help with the memory overclock? I may simply be stuck at 960mhz which isn't too bad for DDR-800 with timings of 5-4-4-15-2t but I'd like to get at least 40mhz more out of the modules if possible.

Good to know that the pencil mod won't really be needed. That's a bit dodgy for me anyway. I tend to colour outside the lines.

As for the CPU voltage, I won't go over 1.4v simply because, as much as I would love to get a 6420 or 6550 I simply can't afford to replace it if it blows or goes out early. Besides, I don't think my Tempest will be able to keep the temperatures down below 60, which is my cut off just to be safe.

Hmm...I'm feeling kind of saucey and may reseat my video card heatsink as well assuming I don't need to get new thermal pads for the memory. Perhaps that'll take a bit more reading.

[Christiaan]

Originally Posted by Perry

Well, my overclock is stuck at 3.4Ghz and my memory is still at 960mhz. I think I'll re-run my cables (it's been a mess since I built the rig), reseat the northbridge heatsink with some AS5 (any ideas how how best to apply it since this isn't the usual CPU application) and toy with the northbridge voltage (eek!).

While all of those may help with the CPU overclock will any of that help with the memory overclock? I may simply be stuck at 960mhz which isn't too bad for DDR-800 with timings of 5-4-4-15-2t but I'd like to get at least 40mhz more out of the modules if possible.

Good to know that the pencil mod won't really be needed. That's a bit dodgy for me anyway. I tend to colour outside the lines.

As for the CPU voltage, I won't go over 1.4v simply because, as much as I would love to get a 6420 or 6550 I simply can't afford to replace it if it blows or goes out early. Besides, I don't think my Tempest will be able to keep the temperatures down below 60, which is my cut off just to be safe.

Hmm...I'm feeling kind of saucey and may reseat my video card heatsink as well assuming I don't need to get new thermal pads for the memory. Perhaps that'll take a bit more reading.

I don't know if the extra NB voltage will help your RAM, but it won't help your CPU, my PD 805 @ 3.5GHz and my NB voltage is on the minimum setting. I think 1.2***v?

As for the voltage, I wouldn't worry, I've been running mine over 1.4v since I got it last year May and I folded 24/7 with it till a month or so ago. It's still good as new, well not quite, I lapped it. So it has a shiny copper top.

[Ravin]

Originally Posted by Perry

Good to know that the pencil mod won't really be needed. That's a bit dodgy for me anyway. I tend to colour outside the lines.

You can do the same kind of mod for the NB and Vdimm resistors. ~around pg 190-200 The Pook noted that as you increase voltage for the CPU or Vdimm the board steals it from the NB. I'd watch it though- the 650i/680i boards are notorious for burning out quickly when Vdimm>2.25V.

As for the AS5 method- I use a the "rice grain" method. After prepping the surfaces by cleaning with thermal paste solvent and isopropyl, simply apply about a SMALL rice grain sized squirt of AS5 to EITHER your HS or IHS of the chip. Use a plastic putty knife to spread it evenly across the surface. Spread it thin- you should be able to see (faint) streaks of metal where the putty knife is not exactly flat. Secure the two surfaces together firmly.

Curing time is stated as 2000 hours in the instructions, but my experience is that it should be within one week. It's best to run hot/idle/off in rotation to expedite curing. You may see from 3-8C difference from fresh application to full curing.

Good luck

Originally Posted by Christiaan

I don't know if the extra NB voltage will help your RAM, but it won't help your CPU, my PD 805 @ 3.5GHz and my NB voltage is on the minimum setting. I think 1.2***v?

As for the voltage, I wouldn't worry, I've been running mine over 1.4v since I got it last year May and I folded 24/7 with it till a month or so ago. It's still good as new, well not quite, I lapped it. So it has a shiny copper top.

I don't thinkn the extra NB voltage will help you guys out either. You're simply not running the FSB hard enough to need it.

1.4875V on the 805? how's your temps with that zalman? I tried to keep my Vcore below 1.325V on the 820- it ran hella hot.