Radeon X800 Non-Pro/X800 XL/X850 Voltmods

[Kai]

I tried flashing with the X850XT PE BIOS (which I downloaded from techpowerup/ATI Bios'es) but the results were worse for me!
It wouldn't even complete the first 3D Mark 05 test! It would just hang at some point and need reset again!
Is it some other BIOS you are using? Mine reads as X800 Series and R430 core...

I don't want to use the X850 non-PE BIOS because I need the VIVO option!
(And I' m not sure it would work either...)

 

[Super XP]

Well, the X850XT bios worked for me & has full VIVO support. Oh, and the reason why your system was unstable was because your GPU & GDDR3 Ram was running hot due to the increased speeds of the X850XT PE. But it is better to flash to the slower X850XT & then OC it if you want.

P.S. you can also modify the X850XT bios & enable VIVO if it is not enabled that is. You can also look at the bios options before U flash to make sure it is activated.

 

[Kai]

Thanx for the tip!
I thought that the PE had VIVO enabled (besides higher clocks) while the "simple" XT didn't...
I will try flashing with XT BIOS this afternoon and see what I come up with.

I' m not sure whether the problem is due to the higher temps though, because 3D Mark 05 runs fine when I simply o/c the card to PE speeds using ATI Tool! Could the XT-PE BIOS introduce more heat at the same speeds?

 

[XibaD]

Thanx for the tip!
I thought that the PE had VIVO enabled (besides higher clocks) while the "simple" XT didn't...
I will try flashing with XT BIOS this afternoon and see what I come up with.

I' m not sure whether the problem is due to the higher temps though, because 3D Mark 05 runs fine when I simply o/c the card to PE speeds using ATI Tool! Could the XT-PE BIOS introduce more heat at the same speeds?

That problem was the same I had with my X800XL until I did the vmod. It was due to a lack of voltage in the core I think. Try to increase a little the vgpu.

 

[infrared]

Yeah, even with my ati silencer and some AS5, it only gets up to 470mhz. I'm doing the VGPU mod as soon as i get a 10k resistor But i've heard they'll go up to 520mhz if you get the voltage right? True?

 

[XibaD]

Well I have it vmodded somehow to 1'45v and..... well my core only reachs 455 safely (with fresh air lol). But as Urlyin said it's not a good mod the pencil one, maybe thats the problem. I'll try to do the vid vmod later

 

[Super XP]

Use the RaBiT v1.7 Video Bios Editor for Radeon FIRST!!!!!!!

Well, as you can all see I am running my X800GTO2 after the X850XT flash & with NO volt modding @ 600MHz core & 1260MHz GDDR3 mem.

But I could not run that speed when my system thought it was the X800XL. I think with the bios flash, it may acually regulate the proper needed voltage or something.

Anyway, everybody, before you flash, use the RaBiT v1.7 Radeon video editor to see if the X850XT supports VIVO. The one I have already supports it. Here is a link to how it looks.

Link.
http://img226.imageshack.us/img226/271/rabitv171tn.jpg

 

[infrared]

The voltage is all hardware regulated and the bios flash with do nothing concerning that. It works by changing the way everything communicates with the core, so yes, having the correct bios will enhance speed a little.

XibaD and me both have the X800XL, with the REAL R430 cores, that's why our cards won't clock anywhere near as fast as yours. Therefore we move into voltmodding to get the speed we want. 600mhz sounds about right for your card, but it could always go further

 

[Super XP]

Ya, only with a volt mod I can probably take it to 650MHz +.

I was running it @ around 630MHz but found it to be a little unstable in games like Quake 4 & BF2, so I had to decrease to 600MHz to make sure my system was 10000% stable.

But later on I found out that it was not my 630MHz OC which made it unstalbe, it was my CPU OC. I forgot to up the CPU vCore alittle when I was running it @ 2.86 GHz from its original OC of 2.81 GHz.

But now I havent gotten around in OC'ing the GTO2 to 630MHz to see how it plays out.

With my system the way it is,
3D Mark 2001 = 33531
3D Mark 2003 = 15388
3D Mark 2005 = 7323
3D Mark 3006 = 2410 (Can't run SM3)
Aquamark 3 = 91553
GPU = 13667
CPU = 13846

 

[Super XP]

I am also getting the X1900XT in about a 1 to 2 weeks or even in a few days. It all depends on how it plays out for me & my money stash I've been saving for a wile now.

I also will probably sell my GTO2 the way it is @ stock X850XT speeds.

 

[XibaD]

With my system the way it is,
3D Mark 2001 = 33531
3D Mark 2003 = 15388
3D Mark 2005 = 7323
3D Mark 3006 = 2410 (Can't run SM3)
Aquamark 3 = 91553
GPU = 13667
CPU = 13846

Damn! These are awesome scores man! If only I could reach them

 

[Super XP]

Thanks though they are not fast enough for me. I want more & more LOL, having PC's as my main hobby is a dangerous this LOL,

Now my massive custom built system needs more. Like 2 x X1900's OC'ed to @ least 900MHz Core & 2000MHz GDDR3 Mem.
http://img156.imageshack.us/img156/2941/mysupermod25lf.jpg

 

[XibaD]

jesus christ

 

[Super XP]

What is wrong? LOL, you look worried or something LOL,

YOu can vote for my case if you like
http://www.techpowerup.com/gallery/188

I completely custom built it from the ground up with a nice powerful 900 GPH water pump. It is also "VERY VERY" quiet, unless I crank up my 8 fan controllers to MAX, then it just sounds like a Hellicopter out of control LOL,

Take Care,

 

[Kai]

Well, I tried flashing with X850XT BIOS (tried several versions, including the ones from ATI, Sapphire and Club 3D) and here are the results:

- The card fan is TURNED OFF after POST and NEVER starts again!!! Even after 3D Mark starts!!! The only solution is to override fan speeds with ATI tool, but what's the point in flashing then?
What BIOS are you people using? Does it work or you override fan speeds?

- Testing the card with X850 & original (X800GTO) BIOS at the SAME speeds (520/540) revealed that X850 BIOS gains it about 150 points in 3D Mark 05! (6250 from 6100 - about 300 points less than X800GTO@PE speeds).
Is it only an R480 core identification issue or there are additional features in X850 BIOS?



PS. Sorry if these questions are irrelevant to Vmod, admins please move the post if you think so.

 

[Super XP]

Well, I tried flashing with X850XT BIOS (tried several versions, including the ones from ATI, Sapphire and Club 3D) and here are the results:

- The card fan is TURNED OFF after POST and NEVER starts again!!! Even after 3D Mark starts!!! The only solution is to override fan speeds with ATI tool, but what's the point in flashing then?
What BIOS are you people using? Does it work or you override fan speeds?

- Testing the card with X850 & original (X800GTO) BIOS at the SAME speeds (520/540) revealed that X850 BIOS gains it about 150 points in 3D Mark 05! (6250 from 6100 - about 300 points less than X800GTO@PE speeds).
Is it only an R480 core identification issue or there are additional features in X850 BIOS?

Did you flash a X800GTO2 ? if so then you should only be using the Sapphire X850XT bios, no other one.

 

[Kai]

Yes, that's the one I used first. The results were the same as with the other BIOS'es though...
Was it supposed to keep the fans running normally?

Where did you download the X850XT BIOS? I got the one from techpowerup/ATI BIOS.

 

[Super XP]

I too also got the bios from there. Maybe you should use RaBiT 1.7 editor to edit the bios & make sure that the Fans run according the temps & such.

 

[Kai]

Hmm... is there such an option in RaBiT? I can't see anything relevant to the fan speeds. Do you mean with a hex editor?
Are your fan speeds dynamic using the X850 BIOS or you override with ATI Tool?

[Edit] Which tools did you use for flashing? Was it flashrom, modified flashrom or atiflash? It seems it could make a difference according to this thread!
http://forums.techpowerup.com/showthread.php?t=5103&page=3

 

[Super XP]

I used ATIWinFlash & RaBiT 1.7 to check to make sure it was the right bios. I have no problem with my fan. It is always on, and when I am benching or playing games, it gets louder a little.

But right now, I took of the Fan & put a water block instead for my water cooling system.

I guess for now use ATI Tool. But I still don't know why your fan is not working?!?!

 

[Kai]

Could you please (or anyone else) post the original X800GTO2 Dual-DVI BIOS? The one in techpowerup reads "X800 XL" with RaBiT and my original died along with an old 3,5" drive...
thx

 

[infrared]

I just did the vgpu, vdd and vddq voltmods.

I used 1x 10k 22turn for the vgpu and 2x 50k 22turn resistors for the vdd and vddq.

I got absolutely no more speed out of my r430 core... It just sucks so bad. I know the mod is working because i can see the temperature rising as i increase the voltage. Took it all the way to 1.7v, and still nothing gained.

On the memory, i went from a max of 555mhz to 610mhz!!!

 

[12k]

will VDDQ mod do me good?
I run 2.68v @ VDD, and vgpu's quite high as well, dont know how high exactly, but high... - The card does benchies at 723/660, tweaked timmings.

 

[Urlyin]

will VDDQ mod do me good?
I run 2.68v @ VDD, and vgpu's quite high as well, dont know how high exactly, but high... - The card does benchies at 723/660, tweaked timmings.

I answered your PM 12k ..

 

[12k]

Its a PCI-E x850XT

Guess vddq aint that important then, but 2.67-2.68v is quite high.... - Reached my goal though... no1 @ ORB in x850XT, 05. WHQL approved, I reached 8840marks.