Overclocking my HD2900xt

dan1987 · 5 Jun 2007 at 14:52

I have been trying to overclock my card and seem to be getting no where as I cant seem to find a guide on how to do it.

When I try to use ati tool as soon as I click either find max button my screen fills with green lines and I have to reset my computer.

Am I doing something stupid here as the only guide I found made this happen?

Does anyone know of a guide to use this program or another one that works in vista x64 or could tell me what to do?

FreeStream · 5 Jun 2007 at 15:54

Don't use the auto thing, never has worked on X1900 cards. And I guess it don't on HD2900s either.

2ndly, do it manually.

10mhz on core or mem at a time, testing by looping 2005 with max AA and AF for 10 mins.

Only work on one item at a time, say core to start. Once you find your max back it down by 10 mhz and work on the mem.

dan1987 · 5 Jun 2007 at 16:39

thanks I will give it a go a bit later, on the sliding bar is the number the amount it is overclocked by? so putting it on 10 is 10 over stock?

Also on the topic of overclocking since this is my first time in orthos which priority is best to use and for what amount of time?

FreeStream · 5 Jun 2007 at 16:59

Orthos = 9 for 24 hours.

Although I did it for 2 hours and then had a 60 day uptime so meh

And yes, 10 on the slider = 10mhz more.

Should show the current clockspeed at the top IIRC, or selected clockspeed.

dan1987 · 5 Jun 2007 at 19:48

I put the core on 10 and the memory on 0 and when I pressed set clock I just got a complete black screen and had to reset :confused:

Am I doing something wrong still?

edit: now it seems to move the slider back down to the default 13.5 from the 23.5 I want it on when I press set clock when I leave the memory slider on 13.5

FreeStream · 5 Jun 2007 at 21:01

Erm, when you first open the program, what does it show?

0/0?

if so then it doesn't support overclocking the card yet.

Need to use that AMD Clock Tool that you can find over at XS.

dan1987 · 5 Jun 2007 at 21:24

that is what I get when I first load ati tool.

Solarius · 6 Jun 2007 at 00:09

Looks from a totally unprofessional point of view like it isnt supported.

It should show much higher clock frequencies in both core and mem sections.
(X1900XT - Core would show 625Mhz) for example.

Maybe try a different overclocking util? I cant suggest one tho

never oc graphics much

dan1987 · 6 Jun 2007 at 00:47

I have just tried the AMD gpu clock tool that was suggested above by Concorde Rules and it seems to be working great!

FreeStream · 6 Jun 2007 at 10:17

dan1987 said:
I have just tried the AMD gpu clock tool that was suggested above by Concorde Rules and it seems to be working great!

yea, Im good :cool:

dan1987 · 6 Jun 2007 at 12:45

Having played with it for a bit I seem to have got quite a high overclock with no issues at all, I have been using 3dmark06 to stress it at full AA and AF at my max resolution (1680 x 1050) looping for 12 minutes and have had no problems.

My stock speeds are core 753 and memory 1656, at the moment I have it on core 850 and memory 2000 and it seems fine. Max temp during the test was 72 degrees.

Am I pushing this too hard or should I carry on to find my maximum, does anyone have any idea around how high these cards can clock?

Banjo · 6 Jun 2007 at 18:13

dan1987 said:
<snip>
My stock speeds are core 753 and memory 1656, at the moment I have it on core 850 and memory 2000 and it seems fine. Max temp during the test was 72 degrees. <snip>

I'm impressed, I've got no idea how well these cards overclock in general but I'm getting one in the next week or so so you've given me something to aim for there

Do you start getting graphical corruptions over any certain speed yet or is everything running smoothly so far?

Banjo ;_;

dan1987 · 6 Jun 2007 at 18:48

Well this is my first time overclocking so I dont want to go to far so that is as far as I have pushed it at the moment. I didnt get any problems stressing it the way I described above at those speeds.

I will try and get it a bit higher later on and try and find the maximum of each seperatly.

Logic Zero · 6 Jun 2007 at 22:07

dan1987 said:
I put the core on 10 and the memory on 0 and when I pressed set clock I just got a complete black screen and had to reset

Do the HD2900XT's have 2d and 3d clocks? Cuz the same thing happened to my when overclocking my X1900XT until i realised i was trying overclock on stock 2d volts, i had to manually set the volts to the 3d settings before overclocking.

dan1987 · 6 Jun 2007 at 22:35

Logic Zero said:
Do the HD2900XT's have 2d and 3d clocks? Cuz the same thing happened to my when overclocking my X1900XT until i realised i was trying overclock on stock 2d volts, i had to manually set the volts to the 3d settings before overclocking.

I think your exactly right about that as the numbers given in ati tool are the 2d clocks!