Abit AS8-3rd Eye

[jaguarking11]

Hey guys, I curently own an asus p5p800 mobo and my 530j is unstable over 3.85ghz and I know there is allot left in this chip, THe probles it seems are the voltages. I was wondering how the abit AS8-3rd Eye stacks up against my asus mobo.

Also does anyone have links to the volt mods done on the asus p5p800?

ANy help would be apreciated.

[ibby]

dont bother replacing mobo.
do vdroop mod.
and chipset mod

[jaguarking11]

dont bother replacing mobo.
do vdroop mod.
and chipset mod

You dont hapen to have links to the vdroop and chipset and posibly the simple 3.3V ram mod?

Id like some detailed pics of that. I rather like asus mobos especialy siunce I got this for 46bux shiped and the alternative would have been 2x the price at least.

Any help would be very apreciated to help me reach the 4ghz mark.
:toast:

[Dark Raider]

http://www.xtremesystems.org/forums/showthread.php?t=42646&highlight=p5p800+mod

I've done this vdroop mod on my p5p800 and my 640 is now stable at 4ghz, before 3.8ghz was the limit.

[jaguarking11]

thanks. I totaly apreciate it. What vcore are you running your 640 now? I want to be able to run close to 1.6vcore but a hair under that and oc the crap out of my chip. Id like 4ghz on this thing too. 4.2 would be my dream, could be realised when I rebuild my watercooler.

[Dark Raider]

After doing vcore mod, my board now over volts, it maybe that I did it wrong but every thing seems to work otherwise. bios vcore set at 1.52, reads 1.6 in asus probe and is the same at inductors read with a dmm. It still droops some under load (.14 volts) but is now dual prime stable at 4ghz. Cpu temps are too high for me, on a warm day asus probe will show cpu at 60c and throttling starts. Water cooling looks like the solution.

My cpu was maufactured in china, it seems that chips manufactured in other plants such as the one in costa rica at the time I bought mine are doing alot better than the one I have. It may also be that my board is junk seeing that I cannot post at 270 fsb even at 14 multi and 5/4 divider

[jaguarking11]

if your having fsb trubles do a fiew things to the board. First of all remove the stock chipset sink and remove the old thermal paste. After that apply a thin coat of arctic silver to it. Secondly you may want to add a fan to the chipset to keep it cool. Also it helps the mofset heatsink to remove that pice of stuck on aluminum on the mofset sink and possibly add a fan to those also. If all that fails you may want to do the vagp mod. But did you rasie the agp voltage yet? if not raise it a notch or two or even completly and see if that helps posting at higher fsb speeds.

:toast:

[Dark Raider]

if your having fsb trubles do a fiew things to the board. First of all remove the stock chipset sink and remove the old thermal paste. After that apply a thin coat of arctic silver to it. Secondly you may want to add a fan to the chipset to keep it cool. Also it helps the mofset heatsink to remove that pice of stuck on aluminum on the mofset sink and possibly add a fan to those also. If all that fails you may want to do the vagp mod. But did you rasie the agp voltage yet? if not raise it a notch or two or even completly and see if that helps posting at higher fsb speeds.

:toast:
yep tried all that, other than the vagp mod.. All I need is a mounting bracket for my water block and I'll see if I cant get a little more.

[jaguarking11]

sounds like your chipset has hit a wall. The agp mod may give you more headway though.

I booted into windows as high as 267fsb. But its unstable. I may need to do vagp mod too to get me over the 4ghz mark.

BTW where did you get the trimers? I looked at the local radioshacka nd the highest end ones are 10k trimers and the vdroop mod needs a 28k one.

[Dark Raider]

Fry's is where I found my trimer. I dont know of any other sources. You need 28k of resistance so a variable resister of any higher value would work I think. I used a trimmer of 50k ohms and set it with my dmm to 28k ohms.

[jaguarking11]

thanks