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Fedback needed: Which HD 3xxx cards support software voltage control?

W1zzard

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#1
while researching voltage control on latest ATI cards I found out that a lot of cards do not have ANY software voltage control at all.

If you have a HD 3xxx or 2600 card, please check the configuration of resistor R636/R639.

If it is placed HORIZONTALLY your card can support (limited) voltage changes.
If it is placed VERTICALLY your card can not support any software voltage changes, get the soldering iron out.

For reference here are two pictures:


Please report back your card's manufacturer, model, PCB number (GPU side near the top edge of the PCB usually) in this thread
 

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#2
Mines a HIS HD3850 256mb no.109-B34031-00,the resistor is horizontal.I will post a pic a little later.
 

W1zzard

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#3
vertical - his 3850 iceq3 turbox, 8340a2 pcb #
vertical - gecube 3850 x-turbo III, 109-B34031-00
 
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#4
horizontal - BBA HD3870 512MB - 109-B33931-00
horizontal - BBA HD3850 256MB - 109-B34031-00
horizontal - HIS HD3870 512MB - 109-B33931-00
horizontal - Sapphire HD3870 512MB - 109-B33931-00
horizontal - Sapphire HD3870 Atomic 512MB - 109-B33931-00
horizontal - Sapphire HD3850 256MB - 109-B34031-00
horizontal - Asus HD3870 512MB - 109-B33931-00
horizontal - Asus HD3850 512MB - 109-B34031-00
 
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#5
I'll check mine in a while but I don't think it supports it off the top of my head

Edit
I just checked my 2 powercolor 3850 256mb cards and both are horizontal with the part number 109-B34031-00



so I guess it does support it
 
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#6


Horizontal : Visiontek HD3870 512mb - 102B33904-00
 
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#7
So do I just need to solder or pen a horizontal line then? What is the use of having them connected vertically, or are the resistors just placed differently?
 
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#8
horizontal, sapphire HD 3870 109-B33931-00



I called a friend of mines who has the gigabyte HD 3870 with the VF-700 and its vertical
 
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#9
what are the ati reference boards out of curiosity..?? horizontal.. ???

trog
 

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#11
horizontal - Sapphire HD3870 512MB GDDR4, 102-B33904-01-AT
 
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#12
VisionTek 3850 512mb rev 1.0... 109-B34031-00 B34001-10

Vertical, definitely. If I had a camera that would work, I'd take a picture.
 

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#14
bump for those who didnt see this earlier today!
 
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#15
so I'm guessing this info is going into making the next ATITOOL beta
 

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#16
I sure hope so*drooling all day about the potential ideas*
 
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#17

sneekypeet

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#18
I looked at the high res. pics that w1zzard put in his review...I didnt see it, however that doesnt mean it isnt there.

this, is where I was looking ...images at the bottom of the page!
 
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#19
I looked at the high res. pics that w1zzard put in his review...I didnt see it, however that doesnt mean it isnt there.

this, is where I was looking ...images at the bottom of the page!
I looked too! I couldn't find any chips similar to the ones soldered onto the PCB with multiple pins on each side, except maybe to the upper right of the GPUs, but the numbers are obviously different.
 
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#20
HD3870X2 does not have this resistor as the phase controllers are totally different (uPI uP6201 vs. Volterra 1165MF).
 

W1zzard

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#21
HD3870X2 does not have this resistor as the phase controllers are totally different (uPI uP6201 vs. Volterra 1165MF).
yep, info in this thread doesnt apply to 3870 x2
 
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#23
Hi, could someone please post a picture of the graphics card as a whole with a circle around the bit we are looking at, I think I have found it, but just want to check the orientation and position, if I am looking in the right place from the right direction, there is a damn lot of circuitry ontop of these cards,

Thanks.
 
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#24
while researching voltage control on latest ATI cards I found out that a lot of cards do not have ANY software voltage control at all.

If you have a HD 3xxx or 2600 card, please check the configuration of resistor R636/R639.

If it is placed HORIZONTALLY your card can support (limited) voltage changes.
If it is placed VERTICALLY your card can not support any software voltage changes, get the soldering iron out.

For reference here are two pictures:


Please report back your card's manufacturer, model, PCB number (GPU side near the top edge of the PCB usually) in this thread
That'd be the first post. R636/R639 is actually one resistor but two different positions it can be in. On my card it was on the end opposite the DVI ports. You'll be looking on the back. It's tricky to find, but just look for the large (relatively) black chip and try to spot those two numbers.

When looking at it, you want the PCI slot to be pointing down, and the DVI ports to be to your right. AFAIK
 
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#25
I REALLY want software voltage control so

BUMP

somebody please post with info on your cards
 
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