Palit / XpertVision 7300GT DDR3 Voltmod

[SikaRippa]

Sorry about delayed answer...

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Nice you both succeeded to make voltmods without problems ... but too bad to get slowdowns. It could be possible that slowdowns are due to some overcurrent protection or/and throttling (GPU lowers speeds for a while) (?)

[Fr3ak]

I just read a bit more about this subject and it seems to be true that there is some kind of protection. After the slowdowns the card runs stock speeds again.
It seems to raise the speed again after a while. At about 800Mhz core I am getting artifacts before I get the slowdowns.
So if it stops for a few seconds, its overclocked too far and just not stable.
When running 05 I get a windows message saying display drivers are not working properly when it slows down.

I am sure it doesnt have to do with the vgpu being too high. I get those slowdowns with unmodded cards too when they are ovlerclocked too much.
Furthermore default 7600GT vgpu is 1.35V and it uses the same G73 chip.

[fakhrain]

probably the slowdown is caused by the cpu temp treshold. have u checked the vgpu temperature?

[Fr3ak]

yes, but that cant be it. Its below 70C.
Its the gpu being unstable, it clocks the card to stock settings for a while,then raises them again.

[massman]

yes, but that cant be it. Its below 70C.
Its the gpu being unstable, it clocks the card to stock settings for a while,then raises them again.

Do you force your vga to 3D perfomance level ?

[mascaras]

i will receive tomorow a Xpertivison 7300GT DDR3 , this vmod is the same to the Xpertvison too ?? >>> http://www.vr-zone.com/?i=3932&s=8


regards

[Fr3ak]

No the mod is completely different. You have to solder a VR to both APW chips. One is in the front on the left. That one is for vgpu. The other APW chip is on the back and is for Vmem. But the Ram is already factory overvolted, so be carefull with the volts.
But there are 2 different 256MB DDR3 Palit cards out, so make sure you have the same layout than the card in the first post.
The Layout of the 128MB card is different as well.

massman: I dunno. I use Ati Tool to set clocks. No idea hoe it sets the clocks.
I am running my cards on water now. Gaming stable at 1.49V at 845/800 40C load temp

[massman]

massman: I dunno. I use Ati Tool to set clocks. No idea hoe it sets the clocks.
I am running my cards on water now. Gaming stable at 1.49V at 845/800 40C load temp

With rivatuner you can set your vga to 'Force 3D Performance'. Your card will run constantly at 3d Perf. speeds; so only for benching

[M@sk]

FR3AK can you please post the pictures of the vmod cause i dont known to what leg should i solder the pot?!

[Fr3ak]

I am not at home, so I have no pics. Massman uploaded 2 pics in his first post and named the chips.
There is a APW chip in front and in on the back of the card. They are located on top left.
You have to solder a VR to pin6(feedback) and pin3(ground).
Pins are counted like the following:
The point is Pin1.
1. 8
2 7
3 6
4 5

The reading pints are both on the back of the card. Massman named them 1.16V and 1.73V. But the 1.73V reading aint correct, stock memory voltage is 1.98V.

[zakelwe]

Freeze - release was introduced on the FX range of video cards by nvidia. Rather than just locking solid at the limit it does freeze release and so you can save the day though your score is rubbish. It's nothing new.

This is a gpu voltage issue, heat normally shows itself by artifacts of funny colours (pinks or green) or green triangles. Memory limit is shown by black lines and flashing triangles.

Regards

Andy

[Fr3ak]

Hmm I would say, that might be sometimes the case, but thats not always true.

The 7300GT showed the following behavior:
When ram was oced too much , its froze with vertical and horizontal lines all across the screen. Was a chess-field like pattern. No artifacts or anything else untill it froze.
When I set a way too high memory speed using ATI-Tool, I got green pixels around the mouse cursor when loading 03. Mouse was still movable, but PC froze.

Overclocking the core too much resulted in those temp freezes . After 800Mhz on the core, I am getting flashing artifacts all over the screen before I get those temp freezes.
I dont think the artifacts are caused by heat, because I have the same temp with a 120mm fan blowing at the cards + AS5 as I had with the stock cooler.
I am now running the cards watercooled 30C cooler and they behave still the same way with a shift in clockspeed.
My artifatcs are black and flashing. On aircooling max artifact clocks were 820/800 and max bench stable clocks 900/800.

[mascaras]

Xpertvison site say the 7300GT 128Mb have 1.4ns memory , are you guys sure that Xpertvisn 256mb model are 2.0ns???



http://www.xpertvision.de/v2/index.p...d=114&Itemid=1


EDIT: my expertvison say Infineon HYB18HS12321AFL20


regards

[Fr3ak]

Asking the question only once is in most cases sufficient
AFL20 means 2ns.

[massman]

Asking the question only once is in most cases sufficient
AFL20 means 2ns.

²

1.4ns is a typo or (?) a new revision.

[Fr3ak]

What is a typo?
The 128MB version from Palit has 1.4ns ram.
Inno3D also has 1.4ns 256MB cards and Galaxy has 1.2ns cards.

[massman]

What is a typo?
The 128MB version from Palit has 1.4ns ram.
Inno3D also has 1.4ns 256MB cards and Galaxy has 1.2ns cards.

Typo = error while typing (e.g.: 'intle' instead 'intel')

I don't see the 1.4ns and 1.2ns cards perform much better. The 2.0ns should have better timings

[M@sk]

I am not at home, so I have no pics. Massman uploaded 2 pics in his first post and named the chips.
There is a APW chip in front and in on the back of the card. They are located on top left.
You have to solder a VR to pin6(feedback) and pin3(ground).
Pins are counted like the following:
The point is Pin1.
1. 8
2 7
3 6
4 5

The reading pints are both on the back of the card. Massman named them 1.16V and 1.73V. But the 1.73V reading aint correct, stock memory voltage is 1.98V.

Ground doesnt necessary needs to be in pin3 right?I can solder the pot at any ground point in the card?

[Fr3ak]

Typo = error while typing (e.g.: 'intle' instead 'intel')

I don't see the 1.4ns and 1.2ns cards perform much better. The 2.0ns should have better timings

lol I know what a typo is, but I didnt know what exactly I should have typed wrong hehe
Well 1.2ns cards ususlly clock a little higher.


Sure you can take any other ground point as well, but although I think it doesnt matter, I have been told to take a groundpoint of the video card.

[massman]

lol I know what a typo is, but I didnt know what exactly I should have typed wrong hehe
Well 1.2ns cards ususlly clock a little higher.

LOL

Well, it's no typo at all, apparantly

Sure you can take any other ground point as well, but although I think it doesnt matter, I have been told to take a groundpoint of the video card.

Indeed; every ground is good. I always pick the ground of the chip because it's easier for me.

[massman]

By the way, one card is fully modded (Bios + voltmods) and the dice container is installed.

http://img74.imageshack.us/img74/3039/1003030bi7.jpg
http://img177.imageshack.us/img177/237/backrq0.jpg

[Fr3ak]

Alright, when will you go for 1ghz on the core? I am quite sure it can be done without problems with sub zero cooling in case the card doesnt have a coldbug.

[massman]

Alright, when will you go for 1ghz on the core? I am quite sure it can be done without problems with sub zero cooling in case the card doesnt have a coldbug.

well ... when the autumn holidays arrive, I'll have a week to spend

I guess it's on the end of october, start of november.

[Fr3ak]

hehe ok, looking forward to it.
I might do some benching tomorrow with higher volts. Buts its a little more difficult to adjust vgpu with the system running. I d need 3 arms to do that ^^
Cant take the board out of the case too, so its a little difficult.

[mascaras]

anyone with a expertvison can post some pics with VGPU MOD???


regards