X800Pro NON-VIVO -> x800XT PE

[johny]

I used conductive pen first to connect the bridge, without any result. I doubt the effect of those liquid silver, since I have strong confidence from my previous analysis: If pin1 and pin4 are really connected well, like before the laser cut, it should appear as a real x800 XT core immediately.

So I decided to go the most certain way by soldering it.

I used 0.25mm thin solder, 1mm coper wire bundled on the top of the solder iron to work, applied the solder first to pin1 and pin4:



And then soldered two copper fiber (as thin as a hair, from shielded earphone wires) on each of the pin, and finally soldered them together.



Now I'm 100% sure pin1 and pin4 is connected as all the other X800 XT boards.

Then I bootted up the machine, open Atitool, guess what? Still 12 pipeline.

Conclusion: Besides connecting the bridge, there are more need to be done in order to make Pro work as a real XT.

[johny]

Now, there are 2 things can be sure:

1. Factory always cut the connection between pin1 and pin4 means that this operation has nothing to do with the production quality of the GPU. If some pipeline really appears as broken(Another strange but natural way of thinking: In software architecture, pipeline is totally a different concept from a water pipeline in the kitchen. Details I don't know, but I'm sure if the manufacturing process caused a certain pipeline broken, 99% of the chance is that the other part of the GPU has already broken by the same manufacturing process), it will be either pin1, pin2, pin3 or pin4 disconnected, not like what we have seen today: only pin4 is disconnected. No, personally I will never believe this, since this will cause too much work and verification for the laster cut operation.

2. Hardware mod to connect pin4 back to the other pins is not enough for a successful mod. I can be 100% sure that after soldering all the 4 pin is connected well together.

But is there any other things I might ignored? For example, the laser cut may be did a two layer cut which also cut a layer below the surface layer? I don't know how many layers actually located on the GPU, so I can not say anything about that.

Today, I got this two picture from a chinese site:
x800pro


x800xt


That site already found out that on this specific part PRO VIVO layout is the same as XT, but PRO is not. I think that viperjohn has tried this part without a difference in result.

Anyway, if I eliminate this last difference, from pure hardware point of view, there is no difference between X800 PRO non vivo and XT except the memory chip type.

ASIC ID is another part that is remaining unknown. I don't think this has something to do with the pipeline itself, since many successful PRO VIVO mod without change the ASIC ID can tell that this is not a big issue.

I have a feeling that the final solution will come out in software approach. We will see.

My card:
ASUS AX800PRO
215RAACGA11F
GB8820.1
0423AA
TAIWAN

(I like the pro fan very much, especially the lovely girl printed on that. Even ignored my GPU water block. ASUS XT does not have such a fan, so I just stick to PRO and want to have 16 pipelines. I hate some people destroy a perfect product just because they want a full product line.)

[ViperJohn]

Originally Posted by johny

Now, there are 2 things can be sure:

1. Factory always cut the connection between pin1 and pin4 means that this operation has nothing to do with the production quality of the GPU. If some pipeline really appears as broken(Another strange but natural way of thinking: In software architecture, pipeline is totally a different concept from a water pipeline in the kitchen. Details I don't know, but I'm sure if the manufacturing process caused a certain pipeline broken, 99% of the chance is that the other part of the GPU has already broken by the same manufacturing process), it will be either pin1, pin2, pin3 or pin4 disconnected, not like what we have seen today: only pin4 is disconnected. No, personally I will never believe this, since this will cause too much work and verification for the laster cut operation.

2. Hardware mod to connect pin4 back to the other pins is not enough for a successful mod. I can be 100% sure that after soldering all the 4 pin is connected well together.

But is there any other things I might ignored? For example, the laser cut may be did a two layer cut which also cut a layer below the surface layer? I don't know how many layers actually located on the GPU, so I can not say anything about that.

Today, I got this two picture from a chinese site:
x800pro


x800xt


That site already found out that on this specific part PRO VIVO layout is the same as XT, but PRO is not. I think that viperjohn has tried this part without a difference in result.

Anyway, if I eliminate this last difference, from pure hardware point of view, there is no difference between X800 PRO non vivo and XT except the memory chip type.

ASIC ID is another part that is remaining unknown. I don't think this has something to do with the pipeline itself, since many successful PRO VIVO mod without change the ASIC ID can tell that this is not a big issue.

I have a feeling that the final solution will come out in software approach. We will see.

My card:
ASUS AX800PRO
215RAACGA11F
GB8820.1
0423AA
TAIWAN

(I like the pro fan very much, especially the lovely girl printed on that. Even ignored my GPU water block. ASUS XT does not have such a fan, so I just stick to PRO and want to have 16 pipelines. I hate some people destroy a perfect product just because they want a full product line.)

There are two resistor "switch" position differences between x800Pro's and x800 XT's or Pro Vivo's.

The resistor at R576/R577 is in the R577 position on Pro's and in the R576 position on XT's and
pro VIVO's.

The other is R360/R359. For Pro's it is in the R359 position and on XT's or Pro VIVO's it is in the
R360 position. Moving the resistors on the Pro cards did not get the last quad enabled.

Viper

[-Rogue5-]

Originally Posted by ViperJohn

There are two resistor "switch" position differences between x800Pro's and x800 XT's or Pro Vivo's.

The resistor at R576/R577 is in the R577 position on Pro's and in the R576 position on XT's and
pro VIVO's.

The other is R360/R359. For Pro's it is in the R359 position and on XT's or Pro VIVO's it is in the
R360 position. Moving the resistors on the Pro cards did not get the last quad enabled.

Viper

I say this at the risk of sounding stupid;

I assume that you flashed the card to an XT BIOS after doing all the hardmods right? Everything I have read says that you have to do that or you will still only get 12pipes.

peace,
-Rogue5-

[ViperJohn]

Originally Posted by -Rogue5-

I say this at the risk of sounding stupid;

I assume that you flashed the card to an XT BIOS after doing all the hardmods right? Everything I have read says that you have to do that or you will still only get 12pipes.

peace,
-Rogue5-

Of course LOL. If your card has an AA core you will not be able to get 16 pipes right now. There
were a rare few successful last qaud unlocks with x800Pro non VIVO's very early but that is history
now. The unlock issue is still being worked on at the software level but not with a lot of gusto.

Viper