Radeon X800 Non-Pro/X800 XL/X850 Voltmods

Urlyin · Feb 13, 2005, 04:53 PM

To read this article go to: http://www.techpowerup.com/articles/...g/voltmods/112

MMos · Feb 21, 2005, 01:55 PM

I tried it , but can't get it working

First i measured VGPU on the measuring point it gives 1.408V.

Then i measured the VGPU resistor , was about .435K . I penciled it down to .390k and measured VGPU
again , still 1.408V.

Then i measured the IGPU resistor , was about 40k and i penciled it down to about 20K.
But still my VGPU is 1.408V.

I don't know why it doesn't raise the VGPU

Edit: Card is Powercolor X800XL

Urlyin · Feb 21, 2005, 03:43 PM

Quote:

Originally Posted by MMos

I tried it , but can't get it working

First i measured VGPU on the measuring point it gives 1.408V.

Then i measured the VGPU resistor , was about .435K . I penciled it down to .390k and measured VGPU
again , still 1.408V.

Then i measured the IGPU resistor , was about 40k and i penciled it down to about 20K.
But still my VGPU is 1.408V.

I don't know why it doesn't raise the VGPU

Edit: Card is Powercolor X800XL

MMos ... which measure point are you using? I see there are two shown ...

MMos · Feb 21, 2005, 05:11 PM

Quote:

Originally Posted by Urlyin

MMos ... which measure point are you using? I see there are two shown ...

I just can see one

One the first picture the green arrow labeled VGPU 10K.

Urlyin · Feb 21, 2005, 07:16 PM

You should be measuring the voltage at the bottom of cap c60 ...

MMos · Feb 21, 2005, 07:22 PM

Quote:

Originally Posted by Urlyin

You should be measuring the voltage at the bottom of cap c60 ...

Yes this is the point(C60) i used.

Ex0skelet0r · Feb 22, 2005, 10:35 PM

and if i do this voltmod, what i will gain? more fps? less temprature?

Urlyin · Feb 23, 2005, 12:56 AM

Quote:

Originally Posted by MMos

Yes this is the point(C60) i used.

MMOs ... clean off the mod for the GPU. Recheck the ohms on the resistor you penciled and then check the resistor to the right of it in image number 5 (counting from the top down).

Urlyin · Feb 23, 2005, 12:59 AM

Quote:

Originally Posted by Ex0skelet0r

and if i do this voltmod, what i will gain? more fps? less temprature?

Ex .. increasing the voltage allows for higher mhz for GPU and MEM. Yes it does equal to higher FPS, depending upon the amount of OC gained. As far as heat, this can greatly increase, again depends on the amount of oc ..

MMos · Feb 23, 2005, 05:55 PM

Quote:

Originally Posted by Urlyin

MMOs ... clean off the mod for the GPU. Recheck the ohms on the resistor you penciled and then check the resistor to the right of it in image number 5 (counting from the top down).

I already cleaned the Mod after seeing no voltage gain. I rechecked everthing. R1596 has ~40K , and the right one on pic5 has ~435k

BTW. I tried to mod VDDQ and VDD , both worked like they should. It's just that damned VGPU mod that doesn't work for me.

Feb 23, 2005, 06:40 PM

Quote:

Originally Posted by MMos

I already cleaned the Mod after seeing no voltage gain. I rechecked everthing. R1596 has ~40K , and the right one on pic5 has ~435k

BTW. I tried to mod VDDQ and VDD , both worked like they should. It's just that damned VGPU mod that doesn't work for me.

MMOS the R1596 IGPU mod is not needed unless you going with a high VGPU ... still not sure why you didn't get an increase with the resistor shown. Do you see the resistor R1597? That is the one that should be shown in the image from W1zzard. Can you verify that? The way they changed the board it may not have a labeled beside the resistor but in a list below ...

Feb 24, 2005, 07:38 PM

I'm wondering, I can only get a 410MHz Core/455MHz Mem stable with this X800XL I got from monarch computer. It's a sapphire (has the hologram on the board), but the PCB is Red. It even has the ugly chick STICKER over what looks like an ATI logo on the heatsink. Let me know what you guys think of that.

On to my main question.... since it's a red PCB (not that the ACTUAL color has anything to do with it obviously, but could be a different design), does that mean this mod will still work since it's a "sapphire"? Do you guys think it's a counterfit or anything or have people seen red versions as well? I DO get around a 5200 score in 3DMark so I know it's at least an X800 XL.

Urlyin · Feb 25, 2005, 03:56 PM

Quote:

Originally Posted by DoughtCom

I'm wondering, I can only get a 410MHz Core/455MHz Mem stable with this X800XL I got from monarch computer. It's a sapphire (has the hologram on the board), but the PCB is Red. It even has the ugly chick STICKER over what looks like an ATI logo on the heatsink. Let me know what you guys think of that.

On to my main question.... since it's a red PCB (not that the ACTUAL color has anything to do with it obviously, but could be a different design), does that mean this mod will still work since it's a "sapphire"? Do you guys think it's a counterfit or anything or have people seen red versions as well? I DO get around a 5200 score in 3DMark so I know it's at least an X800 XL.

No big deal on it being red or blue ... check the images against the locations on your board. They should be the same and the mod should work. Your score of 5200 doesn't sound off for an XL ...

Feb 28, 2005, 11:02 PM

Hi all,

new to this forum.

I have a question about the OVP or IGPU mod on the x850. When do I have to do this one. I am guessing it protects the vgpu from getting to much volts. How many is too many volts? I am at 1.55v now.

musk

AllBrain · Mar 1, 2005, 05:25 AM

I have a small little problem with my Gecube X800XL. The PCB does not look the same at all:

Here are the codes on the IC's that I think control the GPU and Memory voltage:
GPU - RT9256
Memory - RT9214
Can someone help me?

Urlyin · Mar 1, 2005, 04:44 PM

Quote:

Originally Posted by AllBrain

I have a small little problem with my Gecube X800XL. The PCB does not look the same at all:

Here are the codes on the IC's that I think control the GPU and Memory voltage:
GPU - RT9256
Memory - RT9214
Can someone help me?

Looks like they changed up from the Fairchild to a Richtek ... can you get a closer shot of the chip area?

Don't see anything on the Richtek web site for the RT9256 but here's the RT9214, are there two of these?

Mar 2, 2005, 07:58 PM

MMos i have the same problem!

you know how to fix it?

W1zzard · Mar 5, 2005, 01:09 PM

i fixed the vgpu location in the article .. previous one was the vdroop mod

cubalis · Mar 5, 2005, 09:42 PM

I am having the same problem with a powercolor vivo x800xl

The VDD and VDDQ have both been penciled and work perfectly, but the VGPU won't budge from 1.41V.

anyone resolve this yet?

W1zzard · Mar 5, 2005, 10:09 PM

cubalis did you use the updated pictures? changed earlier today

cubalis · Mar 5, 2005, 10:32 PM

yes I used the new pictures. I got my memory to oc stable to 580 instead of 540 before this mod, but my GPU needs a little more juice to get past where it's at now (454)

And thanks for the info - this mod is very easy to do and has great results... if only I could get my VGPU up....

cheers

funkflix · Mar 5, 2005, 10:51 PM

@cubalis

It works perfect for me! Are u sure thet u used the new pics.? I'm now on 1,54V and it gaves me an boost about ~ 35MHz, it's ok, but it could be better!

Make an pic from ur card, maybe it's an different layout?

Regards.

Edit: I'm on a x850 XT.

cubalis · Mar 5, 2005, 11:48 PM

ok, the penciled mod was applied to resistor with the green box. I took all readings for the VGPU on C60.

Also, this is the only x800xl that uses an external pci-e power connector (6 pin)..... could this have anything to do with it?

funkflix · Mar 5, 2005, 11:51 PM

Use the two pins in the blue box! It will work!

W1zzard · Mar 5, 2005, 11:53 PM

that's the wrong one .. you have to pencil in the EMPTY spot to the left of your green box as indicated in the pictures

Feb 13, 2005, 04:53 PM	#1
Urlyin Senior Moderator Join Date: Aug 2004 Posts: 2,133 (0.67/day) Thanks: 61 Thanked 124 Times in 77 Posts	Radeon X800 Non-Pro/X800 XL/X850 Voltmods To read this article go to: http://www.techpowerup.com/articles/...g/voltmods/112 Last edited by Urlyin; Aug 14, 2005 at 02:18 PM.

Feb 21, 2005, 01:55 PM	#2
MMos Join Date: Feb 2005 Posts: 11 (0.00/day) Thanks: 0 Thanked 0 Times in 0 Posts	I tried it , but can't get it working First i measured VGPU on the measuring point it gives 1.408V. Then i measured the VGPU resistor , was about .435K . I penciled it down to .390k and measured VGPU again , still 1.408V. Then i measured the IGPU resistor , was about 40k and i penciled it down to about 20K. But still my VGPU is 1.408V. I don't know why it doesn't raise the VGPU Edit: Card is Powercolor X800XL Last edited by MMos; Feb 21, 2005 at 02:02 PM.

Feb 22, 2005, 10:35 PM	#7
Ex0skelet0r Join Date: Aug 2004 Location: Earth Posts: 24 (0.01/day) Thanks: 0 Thanked 0 Times in 0 Posts	and if i do this voltmod, what i will gain? more fps? less temprature? __________________ Live And Let Die

Mar 1, 2005, 05:25 AM	#15
AllBrain Join Date: Oct 2004 Location: Cape Town, South Africa Posts: 6 (0.00/day) Thanks: 0 Thanked 0 Times in 0 Posts	I have a small little problem with my Gecube X800XL. The PCB does not look the same at all: Here are the codes on the IC's that I think control the GPU and Memory voltage: GPU - RT9256 Memory - RT9214 Can someone help me? __________________ MSI K8N Neo 4 Platinum Ultra \| AMD Athlon 64 939 3200+ \| Crucial Ballistix DDR400 512MB x2 Gecube X800XL 256MB PCI-E \| Koolance PC2-650BW Water-Cooling \| AOpen 500W Power-Supply Last edited by AllBrain; May 27, 2005 at 07:30 AM.

Processor:	Intel Core i7-2600K @ 3.4 GHz
Motherboard:	ASUS P8Z68-V Pro
Memory:	3x 2048 MB Mushkin DDR3
Video Card:	ASUS GeForce GTX 670 Direct CU II TOP
Hard Disk:	Crucial C300 128 GB, WD6400AAKS 640 GB, WD15EADS 1.5 TB
Optical Drive:	BenQ DW1640
CRT/LCD Model:	Dell U3011 30", 2560x1600 + 19" 1280x1024
Case:	NZXT H2
Sound Card:	On-board Realtek HD
PSU:	Kingwin Absolute Platinum 550 W
Software:	Windows 7 64-bit

Feb 21, 2005, 07:16 PM	#5
Urlyin Senior Moderator Join Date: Aug 2004 Posts: 2,133 (0.67/day) Thanks: 61 Thanked 124 Times in 77 Posts	You should be measuring the voltage at the bottom of cap c60 ...

Feb 24, 2005, 07:38 PM	#12
DoughtCom Guest Posts: n/a (0/day)	I'm wondering, I can only get a 410MHz Core/455MHz Mem stable with this X800XL I got from monarch computer. It's a sapphire (has the hologram on the board), but the PCB is Red. It even has the ugly chick STICKER over what looks like an ATI logo on the heatsink. Let me know what you guys think of that. On to my main question.... since it's a red PCB (not that the ACTUAL color has anything to do with it obviously, but could be a different design), does that mean this mod will still work since it's a "sapphire"? Do you guys think it's a counterfit or anything or have people seen red versions as well? I DO get around a 5200 score in 3DMark so I know it's at least an X800 XL.

Feb 28, 2005, 11:02 PM	#14
Unregistered Guest Posts: n/a (0/day)	Hi all, new to this forum. I have a question about the OVP or IGPU mod on the x850. When do I have to do this one. I am guessing it protects the vgpu from getting to much volts. How many is too many volts? I am at 1.55v now. musk

Mar 2, 2005, 07:58 PM	#17
Unregistered Guest Posts: n/a (0/day)	MMos i have the same problem! you know how to fix it?

Mar 5, 2005, 01:09 PM	#18
W1zzard Benevolent Dictator Join Date: May 2004 Location: Stuttgart, Germany Posts: 13,792 (4.18/day) Thanks: 184 Thanked 10,291 Times in 3,175 Posts System Specs	i fixed the vgpu location in the article .. previous one was the vdroop mod

Mar 5, 2005, 09:42 PM	#19
cubalis Join Date: Mar 2005 Posts: 5 (0.00/day) Thanks: 0 Thanked 0 Times in 0 Posts	I am having the same problem with a powercolor vivo x800xl The VDD and VDDQ have both been penciled and work perfectly, but the VGPU won't budge from 1.41V. anyone resolve this yet?

Mar 5, 2005, 10:09 PM	#20
W1zzard Benevolent Dictator Join Date: May 2004 Location: Stuttgart, Germany Posts: 13,792 (4.18/day) Thanks: 184 Thanked 10,291 Times in 3,175 Posts System Specs	cubalis did you use the updated pictures? changed earlier today

Mar 5, 2005, 10:32 PM	#21
cubalis Join Date: Mar 2005 Posts: 5 (0.00/day) Thanks: 0 Thanked 0 Times in 0 Posts	yes I used the new pictures. I got my memory to oc stable to 580 instead of 540 before this mod, but my GPU needs a little more juice to get past where it's at now (454) And thanks for the info - this mod is very easy to do and has great results... if only I could get my VGPU up.... cheers

Mar 5, 2005, 10:51 PM	#22
funkflix Join Date: Feb 2005 Location: Germany Posts: 98 (0.03/day) Thanks: 2 Thanked 2 Times in 2 Posts	@cubalis It works perfect for me! Are u sure thet u used the new pics.? I'm now on 1,54V and it gaves me an boost about ~ 35MHz, it's ok, but it could be better! Make an pic from ur card, maybe it's an different layout? Regards. Edit: I'm on a x850 XT.

Mar 5, 2005, 11:48 PM	#23
cubalis Join Date: Mar 2005 Posts: 5 (0.00/day) Thanks: 0 Thanked 0 Times in 0 Posts	ok, the penciled mod was applied to resistor with the green box. I took all readings for the VGPU on C60. Also, this is the only x800xl that uses an external pci-e power connector (6 pin)..... could this have anything to do with it?

Mar 5, 2005, 11:51 PM	#24
funkflix Join Date: Feb 2005 Location: Germany Posts: 98 (0.03/day) Thanks: 2 Thanked 2 Times in 2 Posts	Use the two pins in the blue box! It will work!

Mar 5, 2005, 11:53 PM	#25
W1zzard Benevolent Dictator Join Date: May 2004 Location: Stuttgart, Germany Posts: 13,792 (4.18/day) Thanks: 184 Thanked 10,291 Times in 3,175 Posts System Specs	that's the wrong one .. you have to pencil in the EMPTY spot to the left of your green box as indicated in the pictures

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