Major Slaughter
turn ur AIM on so i can chat with u. its to late i already killed my board thx.
JK i'll wait a day. :)
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Major Slaughter
turn ur AIM on so i can chat with u. its to late i already killed my board thx.
JK i'll wait a day. :)
AZN Btw its the same mod as the P4G8X ! just the parts are located differently on the P4C800. Also instead of measureing off the coil, the Vdimm measurement is off the leg of the mosfet.
Right be sure and do this mod WITHOUT your memory installed just incase you go too high with the volts.
To measure the Vdimm set your multimeter to DC volts, place the red lead on the leg of the mosfet thats illustrated in the pic. and the black lead to any ground on the mb or case gnd.
Major slaughter turn ur aim on :)
Given what Major has said, I would say yes, you can do this and check the voltage without the memory in (yes, I would think you will get the annoying beep). The measurement spot is the mosfet leg circled in green in the pics above.Quote:
Originally posted by AZN
so if u take the ram out u can still check the voltage right? u just will get the annoying beeps but other then that everything will work the same? i still dont know where to put the DMM to see how high the voltage is
As Major says, there will undoubtably be some better pics of all this soon if you are not sure about what you're doing right now. No reason to be in a hurry to blow your board up :D
Major, you didn't do this your usual way with the grabber and the fan header ground where you can take it right off, measure the resistance, and put it right back on? ;)
OK I set vdimm IN the BIOS to 2.55v
Then I installed a 50k VR {brother just brought me one}
Set the VR to 50k measured with a Fluke 88
But when I start the PC and read the MOSFET it starts out at "2.945v" and the only way I can go is up volts ????
I rechecked the VR twice now and it is set to 50K??
BrainStorm I'm actually using all of the fan headers on this board so I had to soldier it in.
Blue078, make sure your measuring the correct leg of the mosfet first or the correct mosfet.
Also make sure that the bios is actually set to 2.55 and not to 2.85, I got a .1 overvlolt with my pot set to 50k to begin with so if its set in the bios to 2.85 then 2.95 is about right for 50K
No I set the BIOS to 2.55.
I'm geting a .4 offset
I also measured in the dimm slot at pin #1, so I'm sure I got the right MOSFET.
Guess I'll roll with it and see if I make smoke :D
Blue078, I'm a little confused by what you said. You said you installed the mod before you tested the resistance of the pot. Could you be measuring the total resistance across the circuit at 50k ohms rather than the resistance across just the pot (i.e., you should be measuring the resistance of your pot when it's not hooked up)?Quote:
Originally posted by Blue078
No I set the BIOS to 2.55.
I'm geting a .4 offset
I also measured in the dimm slot at pin #1, so I'm sure I got the right MOSFET.
Guess I'll roll with it and see if I make smoke :D
If you're sure you're measuring everything correctly, you could always try the 100k pot you have set to about 60k and see what it says.
Sorry I tend to not make myself clear some times:)Quote:
Originally posted by BrainStorm
Blue078, I'm a little confused by what you said. You said you installed the mod before you tested the resistance of the pot. Could you be measuring the total resistance across the circuit at 50k ohms rather than the resistance across just the pot (i.e., you should be measuring the resistance of your pot when it's not hooked up)?
If you're sure you're measuring everything correctly, you could always try the 100k pot you have set to about 60k and see what it says.
Yes I measure the POT {VR} before I installed it. set it to 50k
checked it twice.
Without the memory in the slots I get a +0.4 offset @ 50k
With memory in the slot I get a +0.1 offset @50K
I'm sure the reading are pretty accurate my fluke 88 is a dam good DVOM better be it set me back $420, I use it at work.
I didn't have that issue with the memory removed, weird.
Atleast you are up and going now.
Where you running the Vmem at 2.85 b4 you changed your bios to 2.55 ?? maybe the bios didn't (couldn't) reset your Vmem to 2.55 without the memory installed ??
Umm no I set the vdimm in the BIOS with the memory in rebootedQuote:
Originally posted by Major Slaughter
I didn't have that issue with the memory removed, weird.
Atleast you are up and going now.
Where you running the Vmem at 2.85 b4 you changed your bios to 2.55 ?? maybe the bios didn't (couldn't) reset your Vmem to 2.55 without the memory installed ??
went back in to the BIOS and double checked myself, then powered off and did the mod:)
It's working, I just decided to now, boot into windows, prob pin #1 in the dimm slot, and adjust "ever so slowly" till I get the voltage I want in windows.
I noticed before the mod that by probing pin #1 in the dimm slot at boot up, the board really fluctuates the vdimm like it shoots all the way to 3.0v for a split second.
Hmmm...that's interesting. Well, it sounds like all is good at the moment. Looks like you will have to do your twekaing with your memory in the slot. Be careful and good luck!Quote:
Originally posted by Blue078
Sorry I tend to not make myself clear some times:)
Yes I measure the POT {VR} before I installed it. set it to 50k
checked it twice.
Without the memory in the slots I get a +0.4 offset @ 50k
With memory in the slot I get a +0.1 offset @50K
I'm sure the reading are pretty accurate my fluke 88 is a dam good DVOM better be it set me back $420, I use it at work.
Thanks TX :DQuote:
Originally posted by BrainStorm
Hmmm...that's interesting. Well, it sounds like all is good at the moment. Looks like you will have to do your twekaing with your memory in the slot. Be careful and good luck!
This is the best I could get out of her stable, 240mhz 1:1 2.5-4-4-8 @3600mhz.
I'll probably leave it at this for a while, I lost 120mhz on the OC by going with 1:1 instead of the 5:4 divider, but my memory bandwith is alot higher and the system "seems" more robust. + I'm able to do this at 1.6v vs 1.7v
Also the New beta bios v1007.006 rocks !!!! really improves memory bandwith and seems just as stable if not more so than v1006
And for the cpu, not too far off from the 248 5:4 @ 3720
Nice stuff guy's! :)
Going to buy latter a 50k pot and make an article for "my" website! maybe an english version! ;)
??? I dont get it. This is what I get at 280fsb 5:4 mem
is lowering the timings make that much differance?
someone know if it's the same mod for the P4P800??? OPP has it... OPP, does you know if it work on the P4P800???
Quote:
Originally posted by Blue078
??? I dont get it. This is what I get at 280fsb 5:4 mem
is lowering the timings make that much differance?
Try the New Beta bios v1007.006 It will get you up and over 6000 easy with turbo mode enabled !!!!!
ftp://ftp.asus.com.tw/pub/Asus/mb/sock478/P4C800/
At 280MHz FSB 5:4 i get this:
http://sapp.telepac.pt/raptor/280fsb.jpg
I'll look into it today or tomorrow, it has the same IC in the same location so it's very possably the same mod.Quote:
Originally posted by Dirty_Punk
someone know if it's the same mod for the P4P800??? OPP has it... OPP, does you know if it work on the P4P800???
OPP
Quote:
Originally posted by Major Slaughter
This is the best I could get out of her stable, 240mhz 1:1 2.5-4-4-8 @3600mhz.
I'll probably leave it at this for a while, I lost 120mhz on the OC by going with 1:1 instead of the 5:4 divider, but my memory bandwith is alot higher and the system "seems" more robust. + I'm able to do this at 1.6v vs 1.7v
Also the New beta bios v1007.006 rocks !!!! really improves memory bandwith and seems just as stable if not more so than v1006
MS, I agree, running the CPU/memory at a 1:1 has a better overall system value for me. I'm waiting on some OcZ2700's that fdo 2-3-3-6 @ 466. . . . we shall see. . . . . .
Ok I see now, I get better membandwidth at 5:4 for 224mhz mem
than 1:1 for 224mhz mem.
I see, but dont understand???
Oh the P4C800 vdimm mod works great:)
Thanks again to all that made it possable.