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Radeon X800 Non-Pro/X800 XL/X850 Voltmods

Mussels

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f@ck! thats X1800XT speeds there! good work man!
 

KGB44

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Hey guys...

I want to ask, if i can solve my fan problem too.

I have flashed Sapphire X850XT PE BIOS PCI-E but my fan runs only with ATI Tray Tools @ 100%. No regulation anymore :(


Can i "tune" the BIOS for other Fan speeds?


THX
 

s7e9h3n

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12k said:
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.
Hey, I know you :wtf:
BTW, I'm still trying to find the best values for VDD/VDDQ on my x850xtpe. Currently, I'm running 1.74Vgpu, 2.44VDD + VDDQ:

x850xtpe @ 793-789/685:

http://service.futuremark.com/compare?2k1=8899625

 

12k

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I dont know my VGPU :D

Hmm, does VDDQ help? - I got faith in 200mhz CPU boost will give me 200 marks in 05.. And I got... 50mhz more in GPU, 40 in GFX mem, just needs to cool it down properly, but impossible without another CPU, or - another pair of ram... But I think 2x 256MB gives worse results in 05 than 2x 512 :(

Anyhow, going for 9.500 some day - might get lend a cascade or even better, a tube for GPU, and then use LN2 on gfx...
 

s7e9h3n

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12k said:
I dont know my VGPU :D

Hmm, does VDDQ help? - I got faith in 200mhz CPU boost will give me 200 marks in 05.. And I got... 50mhz more in GPU, 40 in GFX mem, just needs to cool it down properly, but impossible without another CPU, or - another pair of ram... But I think 2x 256MB gives worse results in 05 than 2x 512 :(

Anyhow, going for 9.500 some day - might get lend a cascade or even better, a tube for GPU, and then use LN2 on gfx...
9500 is the WR for an x850xtpe on '05........
 

Urlyin

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12k said:
I dont know my VGPU :D

Hmm, does VDDQ help? - I got faith in 200mhz CPU boost will give me 200 marks in 05.. And I got... 50mhz more in GPU, 40 in GFX mem, just needs to cool it down properly, but impossible without another CPU, or - another pair of ram... But I think 2x 256MB gives worse results in 05 than 2x 512 :(

Anyhow, going for 9.500 some day - might get lend a cascade or even better, a tube for GPU, and then use LN2 on gfx...

Talk to jason57570 he's a DICE man .... was having his design machined and selling them at one point
 

12k

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Urlyin said:
Talk to jason57570 he's a DICE man .... was having his design machined and selling them at one point

I dont know if he's about to sell, but a fellow danish clocker has a tube for x8xx series cards, made by Gabbax... - But I doubt he wants to sell :(
 
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Any suggestions on what is the best way to OC the X1900XT ?

Thanks.
 

Urlyin

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Super XP said:
Any suggestions on what is the best way to OC the X1900XT ?

Thanks.

haven't got my hands on one yet Super ... :slap: nor have I seen anyone else post one yet... haven't been looking real hard either... I assume you were talking about vmods ... have you seen this thread here
 
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Urlyin said:
haven't got my hands on one yet Super ... :slap: nor have I seen anyone else post one yet... haven't been looking real hard either... I assume you were talking about vmods ... have you seen this thread here

O.K. thanks, but I thought all X1800's & X1900's have auto voltage regulations or something. Like when you OC the voltage auto adjusts to accomidate the OC. But I do here that you should never OC the 2D engine, and to only touch the 3D, or you will have major problems & even damage the card.

Thanks
 

KGB44

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Reached now 614/650 with a little VMOD for VCore and VMem...


1,43V for the Core, and 0,10V more for Mem. With Stock Cooler running 55°C or max. 63°C.


3D Mark 2003 Score: 14931 Points...without any Optimized Drivers or something, only more Frequency :rolleyes:
 

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hello

i want to use the igpu v-mod with my sapphire x800xl (blue pcb) .. i tried at first with pencil mod 1.4v .. my videocard is running now rockstable with 450/555mhz (@stock 441/555mhz with 1.35v)

now i want to raise the v-core to 1.55v .. my ati-card is watercooled and works with 1.40v at 39°C under load

my ati has no seperate 12v adapter .. could my videocard operate 24/7 with 1.55v or is it to dangerous (effects like electronic migration)

greets
-crusader-
 

Urlyin

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Stormlord said:
hello

i want to use the igpu v-mod with my sapphire x800xl (blue pcb) .. i tried at first with pencil mod 1.4v .. my videocard is running now rockstable with 450/555mhz (@stock 441/555mhz with 1.35v)

now i want to raise the v-core to 1.55v .. my ati-card is watercooled and works with 1.40v at 39°C under load

my ati has no seperate 12v adapter .. could my videocard operate 24/7 with 1.55v or is it to dangerous (effects like electronic migration)

greets
-crusader-

You don't need the IGPU ... water cooling and vcore at 1.55v ... you should be good 24/7
 

ViperJohn

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Urlyin said:
You don't need the IGPU ... water cooling and vcore at 1.55v ... you should be good 24/7


Awh good you saved me time to say it lol.

Viper
 

Urlyin

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Storm ... did you mean the VID Vmod... because I don't think you're going to get 1.55v by doing the pencil vmod ... unless you have a card with the resistor at r1597... did you pencil the two solder pads?
 

Urlyin

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:)
ViperJohn said:
Awh good you saved me time to say it lol.

Viper

LOL ... I need to answer these so you can keep working ... hehe :)
 

Stormlord

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hi urlyin

yes i mean the pencil-mod for solder pads



at the moment i use 1.4v .. next one i try 1.55v by pencil-mod



it should be harmless with 1.55v and 40°C @burn !?

greets
-stormlord
 
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You should get yourself some variable resistors. As long as you've got a steady hand and are fairly good with a soldiering iron, it's not too tricky, and gives you much better voltage control.
 

Stormlord

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hi infrared

i think 1.55v should be ok for my x800xl if the voltage is stable .. i hope its not to much for the next 2 years .. thats only the problem cause i dont want to kill my ati :)

greets
-stormlord-
 

Urlyin

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Stormlord said:
hi urlyin

yes i mean the pencil-mod for solder pads



at the moment i use 1.4v .. next one i try 1.55v by pencil-mod



it should be harmless with 1.55v and 40°C @burn !?

greets
-stormlord

You lost me Storm ... the Pencil vmod on the two solder points is a different vmod from the VID vmod which requires you either solder or use a conductive pen to create a different voltage...
 

Stormlord

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hi urlyin

ok .. i mean the VID Vmod and use an 2B pencil to connect the two solder pads (VID 0 [pin 10]) as in the table described, to increase the voltage from 1.35v to 1.40v

now i want to increase the voltage to 1.55v with the same principle .. i hope its not to risky for the next 2 years with about 40°C (with ati tool - artifact test) :)

greets
-stormlord-
 
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that's a pretty sweet temperature! You'd be fine up to 1.6v i expect.

What cooler are you using?

good luck ;)
~IR
 

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I was closing my case, and dropped a screw, and it landed across the contacts on the Variable Resistor, shorted out the VDD mod, instantly killing my card :(

It was awsome, did 480/610 with R430 core and 2.0ns memory.

Anyway, i've undone the mods, and returned it to stock, and am in the process of getting it RMA'd, but i'ved asked if i can swap it for the sapphire x800gto2, since it's the same price.

oo, nice cooler!!! :D
 
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