• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

X1900 underclocked problem

R

richardg3

n00b
Joined
Oct 19, 2006
Messages
7
Hi guys,

I built a new rig a month back and am now happy with my overclock being stable on my CPU/FSB/RAM, so I thought I'd overclock my graphics card.

I bought an HIS silent ICEQ3 X1900XT 512MB after hearing they were good overlcockers. However - when reading back the clock speeds for both GPU and RAM I see only 499MHz and 505MHz respectively. I should be seeing 621MHz GPU, (1.44GHz/2) 720MHz RAM. Both Powerstrip and ATITool are giving me the same values.

I can overclock the GPU to 670MHz no problem, the RAM seems to be a problem getting to anywhere near 700MHz though.

Does this sound like a defective card? or is there anything that could affect the readings in both ATITool and Powerstrip?

I have the latest drivers on both my Vista and XP drives. I get the same readings back on both too (although I can't seem to get the GPU to clock as high under Vista).
 
The X1900XT needs the hotkey polling thing running if it is going to kick into 3d mode. I had the exact same problem until I left the polling running. I know, the name doesn't suggest that it controls 3d/2d clocks, but it does.

As for the OC -- 3D mode (drivers) also ups the voltage, which could be your problem.
 
yea above poster is right, 2D mode is for windows desktop and stuff which will run at 499 and 500, when you go into games it will jump up to 620 and 700, if you leave ati tool on all the time it will usually start up in the 620 and 700 mode or wutever overclock you set it to. Also i leave it on because its keeps the fan speed higher
 
Its not just the clocks. The problem you are getting is you are trying to push the clocks to 3D levels without ever increasing the voltage from 2D level.

I forget that it is exactly, you will have to search. Now that I think about it I remember the Vmem not being set down from 3D too much,

Anyway, look at you Vgpu and Vmem and then try overclocking
 
You must log in or register to reply here.
Back
Top