and X1900XT VS. X1900XTX + OVERCLOCK VOLTAGE GUIDES

[irev210]

Okay, in an attempt to make it easier to find information, I am going to start one thread and try to keep it all up to date.


THE OVERCLOCKING DATABASE



c.freak : 783/900 with volts at 1.500/2.140/2.130/1.486 this is on water?
andL65 : 783/891 with volts at 1.575/2.250/2.080/1.561 this is on WATER
andL65 : 729/828 with volts at 1.475/2.099/2.099/1.480 this is a X1900XT on air
Alucardu : 669/774 with volts at 1.450/2.201/2.102/1.550 this is a X1900XT on air
einCe : 725/873 with volts at 1.400/2.151/2.151/1.500 this is on stock cooler
Ares323 : 800/882 with volts at 1.575/2.100/2.100/1.500 this is on water
kiwi : 760/900 with volts at 1.575/2.350/2.151/1.526 this is on water
uwackme : 702/801 with volts at 1.520/2.151/2.119/1.510 this is on modified air
einCe : 700/860 with volts at 1.500/2.151/2.119/1.510 this is on stock cooler
sam3755 : 766/845 with volts at 1.575/2.150/2.150/1.500 this is on water
licken : 760/860 with volts at 1.425/2.124/2.086/1.486 this is on water
Sals : 702/819 with volts at 1.475/2.119/2.119/1.500 this is on a stock cooler
Lane-k : 772/891 with volts at 1.475/2.192/2.192/1.500 this is on a stock cooler
Eastcoasthandle : 720/832 with volts at 1.425/2.108/2.108/1.486 this is on a stock cooler
irenic : 725/835 with volts at 1.450/2.130/2.130/1.500 this is on a stock coolre
darksythe : 725/835 with volts at 1.450/2.130/2.130/1.500 this is on a stock coolre
nicepun : 774/891 with volts at 1.575/2.250/2.212/1.526 this is on water
menlatin: : 749/864 with volts at 1.575/2.213/2.086/1.528 this is on water
LivingL@rGe81 : 751/918 with volts at 1.550/2.236/2.160/150 this is on a stock cooler
kesnel : 790/873 with volts at 1.575/2.150/2.102/1.486 this is on water
Kesnel : 725/873 with volts at 1.475/2.150/2.102/1.486, this is on stock cooler
grumpy : 815/900 with volts at 1.500/2.130/2.130/?????, this is on ????? ??????
licken : 740/814 with volts at 1.550/2.086/2.086/1.500, this is on water
Elfear : 750/872 with volts at 1.525/2.200/2.200/1.500, this is on ????? ?????
Chr0n1c : 720/860 with volts at 1.470/2.171/2.124/1.514. this is on stock cooler
Jimbo Mahoney : 790/830 with volts at 1.575/2.151/2.151/1.580, this is on water (silverprop)
menlatin : 732/800 with volts at 1.575/2.086/2.086/1.530, this is on water (home made)
LenniZ : 750/875 with volts at 1.575/2.113/2.086/1.503, this is on ???? ?????
metalman2785 : 725/820 with volts at 1.500/2.100/2.100/1.500, this is on stock cooler




X1900XTX voltages

According to my sexy multimeter

2D mode ran at 1.166
3D mode ran at about 1.395

so, we can say ~1.2/~1.4

So what does this mean? How much voltage can I run?

Vcore
If you are on air, or stock cooler I would suggest starting at 1.4 and then moving up to 1.45-1.475. Much higher, you start running into problems with heat. As many others have noticed, you run into lots of problems with heat before voltage comes into play.

Vmem
There are lots of variables, look at the database, and play around with the settings

VDCCI
Again, varies alot. Start with stock.


I have not tested the voltage on X1900XT, so I dont know the voltage on that


How to: Flash from X1900XT to X1900XTX

1) Make sure you have memory that says BJ11-


2) Get ati winflash, save old .rom, load r580.rom, check force flash.
ATI WINFLASH

3) Overclock!
I personally like the ATI tool found @ techpowerup.com

Voltages
Overclocking is fairly straightfoward now. Some report less mem voltage helps clocks, more helps others. For me, more helped.

Cooling
These cards are very sensitive to heat. The cooler you can make them, the better they will clock. Stock temps at stock speeds with fan set on AUTO hit about 85-90C!!! While this is perfectly O.K. for a stock clocked card, this doesnt fly well with an overclocked one! Be creative, or wait until arctic cooling and zalman release their respective coolers for the x1900 series.







Core differences? My XTX looks like this (S/N # edited)



For reference, high res shots of X1900XTX
Files are between about 3-4 megs each.
x1900xtx1.jpg
x1900xtx2.jpg
x1900xtx3.jpg
x1900xtx4.jpg
x1900xtx5.jpg
x1900xtx6.jpg
x1900xtx7.jpg
x1900xtx8.jpg
x1900xtx9.jpg
x1900xtx10.jpg
x1900xtx11.jpg