Hello
I just can’t get my Asus P4P800 booting with over 1.6vcore. I heard something about a Prescott protection (max 1.6v), is that right?
Hello
I just can’t get my Asus P4P800 booting with over 1.6vcore. I heard something about a Prescott protection (max 1.6v), is that right?
yes that's right
p4 3.0ghz - p4p800-wm -2*256mb pc3200 - 9800pro - 80gig hdd
t2500ES - 945GT Speedster-A4R - 2*1gig ddr2 pc5400 - 600gig hdd
htpc - t2300 - Asus N4L-VM DH - 2*512mb pc5400 - 6600 256mb - 80gig hdd - fsp 300w
hp lappy @1.73ghz
dell lappy @1.13ghz
Ahh damn. Any modded bios? To prevent that?
nopp, only vmod
p4 3.0ghz - p4p800-wm -2*256mb pc3200 - 9800pro - 80gig hdd
t2500ES - 945GT Speedster-A4R - 2*1gig ddr2 pc5400 - 600gig hdd
htpc - t2300 - Asus N4L-VM DH - 2*512mb pc5400 - 6600 256mb - 80gig hdd - fsp 300w
hp lappy @1.73ghz
dell lappy @1.13ghz
Are you talking about 1.6v for real? Or 1.6v in your bios? The p4p won't boot @ 1.6 ..try 1.675/1.65
1.6v in bios.. It wont boot with anything higher then 1.6.
it wont boot at 1.65 or 1.625, but it should boot at 1.6 and 1.675.Originally Posted by Wimo
Again, there is a built-in limitation so the Pressys can't boot above 1.6 on 865/875 boards.
You can do an overvolt mod, but you'll need a soldering gun and a VR.
<----- REST IN PEACE, KIT. 1993-2007.
try 1.675(although thats kinda high for a prescott, it should work)
No boot at 1.672, 1.7 , 1.725 either..
if any of you have the asus ai booster then you should be able to take it above 1.6 with that i am not gonna try it untill my xeons come in and everything is opperating in harmony
With their extreme thermal issues, most users have discovered the hard way what happens when you pass more than 1.6v through a Prescott core.
Unless you are on phase-change cooling, I would advise against it.
* P4C800-E Deluxe w/ 3.1GHz Prescott cooled by Zalman CNPS7700-Cu * 2x1024MB Corsair XMS PC3200 @ 2-3-3-6 C2* XP Pro, Debian 2.6.8, & Slack 10 * 2x120GB WD Caviar IDE's in RAID0 / 80GB Maxtor * 56X CD-ROM & Sony 52X/32X/52X CD-RW/DVD-ROM * Gainward FX5900U Golden Sample * Thermaltake Xaser III Skull Case w/ Antec 480w TruePower *
Most users? Show me 3 links of people who have fried a Prescott this way.
I agree you should have aggressive cooling, but most users?
I'd like to see some attribution for this statement.
<----- REST IN PEACE, KIT. 1993-2007.
Mine doesnt let me go past 1.47 and anything over 245 FSB causes windows XP to revert to the old grey interface.
Hi
I would like to know if it’s the same on Asus P4C800? I just got one today
And yes, its with a mach1 r404a. So I don’t see the problem with over 1.6v. It’s only for bench anyway
Most users? Show me 3 links of people who have fried a Prescott this way.
I agree you should have aggressive cooling, but most users?
I'd like to see some attribution for this statement.
I have personally fried 2 socket 478 Prescotts with 1.55 volts.
E4300 @ 3.2ghz, 2x1GB Crucial PC-8500, Gigabyte EP45-UD3P, 4850 X-Fire, OCZ Powerstream 520.
MB- P4P800-E dlx + droop mod & prescott 3.0
chosen: get:
1,4 1,33
1,45 1,36
1,5 1,41
1,55 1,46
1,6 1,5
after going higher comp didn`t boot
I pushed prescott down to 1,5 GHz & pushed V core up BUT:
chosen: get:
1,625 0,93
1,65 0,94
1,7 0,99
1,75 1,00
1,95 1,06
It seems to be real becouse wchen I chouse v-core higher than 1,6 not only the voltage droops down a lot but also tenperature goes much down.....
What`s the problem? I cant get v-core higher than 1,5....
Last edited by Fishman; 03-15-2005 at 09:58 AM.
Prescott 3.0@3.824 WC [Vcore1,49] Fsb 255MHz;
Hynix d-43 DDR2x256 [Vddr2,9]
ASUS p4p800-E dlx WIFI +Droop mod + dimm mod
Best SuperPI 35sek. (1MB)
^^ What psu are you using?
E4300 @ 3.2ghz, 2x1GB Crucial PC-8500, Gigabyte EP45-UD3P, 4850 X-Fire, OCZ Powerstream 520.
Damn. It's the same with my new Asus P4C800. No boot with more then 1.6v
It will boot just try with fsb=100 MHz and check voltage in bios monitor...
Prescott 3.0@3.824 WC [Vcore1,49] Fsb 255MHz;
Hynix d-43 DDR2x256 [Vddr2,9]
ASUS p4p800-E dlx WIFI +Droop mod + dimm mod
Best SuperPI 35sek. (1MB)
Sorry.. But I dont understand what you mean, Fishman.
I just cant see how it sould work.
I was testing my stuff and i find a wery strange think. When i set Voltage to 1.6V comp didn`t boot. But when I set FSB to 100MHZ (standard is 15*200MHz it is 3.0 presscott) comp boot. W check the voltage in bios monitor. The voltage was not 1.6 but about 1V. Some people are saying that it is e prescot limitation. I dont belive in that opiniob. Why? Becouse avryone has a prblem with seting woltage to 1.6 but the real voltage after drop mode is lower than you set. So my real voltage is lower, but i also have problem with seting higher than1.6volt.
Prescott 3.0@3.824 WC [Vcore1,49] Fsb 255MHz;
Hynix d-43 DDR2x256 [Vddr2,9]
ASUS p4p800-E dlx WIFI +Droop mod + dimm mod
Best SuperPI 35sek. (1MB)
My board does this with a Northwood....any fixes for this?
I noticed it too. What I did was raised the Vcore to 1.675V or 1.685V then it booted.
Thats a little high for my taste. I'd be comfortable with about 1.65v max, especially since it overvolts a little at idle.
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