7900GTX vs 7800GTX512 vmoded

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03-09-2006, 07:31 AM
Vapor

XFX has their XXX (UDD7) at 560/1650 :slobber:

Same price too (360)....just took some digging to find out the clocks, damn you newegg :)

I wonder how these puppies respond to voltage....any efforts being made to find the vmod Denny?

EDIT: WHOA THERE OPP! way to predict my question and just come through with some AMAZING results dude, wow!
03-09-2006, 07:38 AM
eva2000

woah OPP.. that's nice
03-09-2006, 07:43 AM
kiwi

1.7V is hard mod I guess? Can you post mods for it or is it the same as for 7800?
03-09-2006, 07:51 AM
OPPAINTER

Quote:

Originally Posted by kiwi

1.7V is hard mod I guess? Can you post mods for it or is it the same as for 7800?

All I did was the core mod, and yes it's the same as the 7800s.

OPP
03-09-2006, 07:52 AM
perkam

Quote:

Originally Posted by eva2000

woah OPP.. that's nice

Yes :D ...not a lot of people make the news JUST by showing up :p:

http://www.xtremesystems.org/forums/...ad.php?t=91934

Results OPP? :)

Perkam
03-09-2006, 08:00 AM
HousERaT

Come on OPP.... you've had that card a whole day and no new threads? You slippin'? NDO?
03-09-2006, 08:03 AM
_JP_

Quote:

Originally Posted by perkam

with both stock cards,

7900XTX > X1900XTX at stock 3dmark06 resolution.
X1900XTX > 7900GTX at 1600x1200 for 3dmark06

In 05, XTX takes both resolutions.

In games the 7900GTX takes the X1900XTX a whole lot of times, but loses out at higher resolutions with AA.

X1900XTX is faster than 7900GTX SLI in FEAR and HL2 at high resolutions with AA.

Perkam

You just need FW 84.17 and everything goes right ;)

http://images.anandtech.com/graphs/7...0334/11160.png
03-09-2006, 08:06 AM
OPPAINTER

Quote:

Originally Posted by HousERaT

Come on OPP.... you've had that card a whole day and no new threads? You slippin'? NDO?

I've been too busy, I still have to put the second card on cooling:D

OPP
03-09-2006, 08:07 AM
OPPAINTER

I just want to mention there is a trick to overclocking these cards.
At first I had the card in my 24/7 PC on water, no mods, it did 720MHz. When I put it on the cascade at -90C and 1.7V the card was stuck at 735MHz :D

The trick is you have to increase your PCI-e mobo clock. I first moved it up to 104 and all of a sudden the card started to clock. When I reached 122 PCI-e I was at 903MHz on the card.
I got inpatient and jumped the PCI-e to 136 and that’s when I screwed up my OS.

So that’s the scoop, increase the PCI-e, it may even help get more MHz on stock air cooling.

OPP
03-09-2006, 08:09 AM
_JP_

Quote:

Originally Posted by OPPAINTER

I just want to mention there is a trick to overclocking these cards.
At first I had the card in my 24/7 PC on water, no mods, it did 720MHz. When I put it on the cascade it at -90C and 1.7V the card was stuck at 735MHz :D

The trick is you have to increase your PCI-e mobo clock. I first moved it up to 104 and all of a sudden the card started to clock. When I reached 122 PCI-e I was at 903MHz on the card.
I got inpatient and jumped the PCI-e to 136 and that’s when I screwed up my OS.

So that’s the scoop, increase the PCI-e, it may even help get more MHz on stock air cooling.

OPP

OPP, this trick works on 7800GTX512??
03-09-2006, 08:09 AM
nn_step

Quote:

Originally Posted by OPPAINTER

These 7900GTX cards are gunna fly:)

No cold bug and need very little voltage. I was playing with one of mine yesterday for a little bit before I blew out my OS. Just getting started and reached the 900s with the core at 1.7V, didn't get a chance to play with the memory.

OPP

Kick ass :banana: :banana: :woot: :woot:
03-09-2006, 08:10 AM
freecableguy

Quote:

Originally Posted by _JP_

OPP, this trick works on 7800GTX512??

no, but setting the PCI-e to about 115-118Mhz on the Ultra-D/SLI-Dx is a good performance boost. Anything higher starts to cause problems (at least with the 7800GTX).
03-09-2006, 08:11 AM
freecableguy

@OPP

Can you post your card manufacturer/model number and verify the memory type installed? 1.1ns, 1.2ns????
03-09-2006, 08:13 AM
_JP_

Quote:

Originally Posted by freecableguy

no, but setting the PCI-e to about 115-118Mhz on the Ultra-D/SLI-Dx is a good performance boost. Anything higher starts to cause problems (at least with the 7800GTX).

I have an A8N32...does this work on mine mobo with a 7800GTX 512MB??
03-09-2006, 08:15 AM
AACDIRECT

Quote:

Originally Posted by OPPAINTER

I just want to mention there is a trick to overclocking these cards.
At first I had the card in my 24/7 PC on water, no mods, it did 720MHz. When I put it on the cascade it at -90C and 1.7V the card was stuck at 735MHz :D

The trick is you have to increase your PCI-e mobo clock. I first moved it up to 104 and all of a sudden the card started to clock. When I reached 122 PCI-e I was at 903MHz on the card.
I got inpatient and jumped the PCI-e to 136 and that’s when I screwed up my OS.

So that’s the scoop, increase the PCI-e, it may even help get more MHz on stock air cooling.

OPP

Interesting that the card maxed out at 720Mhz. XFX sent me a price list with SKUs. They are going to have a 750/1900 part on stock cooling. (They had 4 GTX SKUs.) I ordered a bunch. I hope I get an ETA today. When I have them I will post info.
03-09-2006, 08:17 AM
_JP_

Quote:

Originally Posted by AACDIRECT

Interesting that the card maxed out at 720Mhz. XFX sent me a price list with SKUs. They are going to have a 750/1900 part on stock cooling. (They had 4 GTX SKUs.) I ordered a bunch. I hope I get an ETA today. When I have them I will post info.

750/1900??
Dont think so...in XFX site the XXX Edition its 700/1800.
03-09-2006, 08:18 AM
OPPAINTER

Quote:

Originally Posted by AACDIRECT

Interesting that the card maxed out at 720Mhz. XFX sent me a price list with SKUs. They are going to have a 750/1900 part on stock cooling. (They had 4 GTX SKUs.) I ordered a bunch. I hope I get an ETA today. When I have them I will post info.

Now thats interesting:D

OPP
03-09-2006, 08:18 AM
freecableguy

Quote:

Originally Posted by AACDIRECT

Interesting that the card maxed out at 720Mhz. XFX sent me a price list with SKUs. They are going to have a 750/1900 part on stock cooling. (They had 4 GTX SKUs.) I ordered a bunch. I hope I get an ETA today. When I have them I will post info.

I just got wood. PM me when you get the 750Mhz parts (I want 2 for SLI). I can only imagine where a vmod and watercooling will take these cards....900+? :D
03-09-2006, 08:20 AM
perkam

Quote:

Originally Posted by _JP_

750/1900??
Dont think so...in XFX site the XXX Edition its 700/1800.

:D If the man says 750/1900 ... then their 750/1900 ;)

Perkam
03-09-2006, 08:21 AM
_JP_

Quote:

Originally Posted by perkam

:D If the man says 750/1900 ... then their 750/1900 ;)

Perkam

OK, but i dont think so...XFX site most be correct...
And those numbers are very high for stock cooler and stock volts.
Plus, GDDR3 1.1ns are reference for 1800mhz...
03-09-2006, 08:29 AM
Supertim0r

1 Attachment(s)

Canadian dollars...
03-09-2006, 08:53 AM
Frozendeath

OPP, or anyone else, are the mounting holes for the 7900gtx the same as for a 7800gtx or did the die shrink move them ?

I figure while my card is shipped over to me, I can see if I need to modify my waterblock mounting.

Thanks!
03-09-2006, 08:56 AM
Vapor

The 7800GTX512's PCB is IDENTICAL (well, not 100%...like 99% though) to the 7900GTX's.

Even the 7900GT has the same hole at each corner layout, but the rest of the points are slightly different, I think (might be wrong at that).

In short, your waterblock will work, regardless if it's just a block or a full-body. If it's just a block, it will also work on the 7900GT, the 7600GT, the 6800s, the X1800s, the X1900s and the X1600s.
03-09-2006, 08:56 AM
AACDIRECT

Quote:

Originally Posted by perkam

:D If the man says 750/1900 ... then their 750/1900 ;)

Perkam

I just checked the website. They are different spec than what I recieved. Nvidia has been giving me a hard time over my support of ATI of late. (They gave me a hard time for selling CF and build ATI demos. I find it funny as I sell SLI and would build NV demos if they asked.) So.... Maybe they gave me some false info. (Also they held back my samples. Guess they feared I was going to leak info to ATI. :rolleyes: )

The price sheet I got yesterday had four SKUs for the 7900 GTX. (Dated March 1- 31st)

PV-T71F-YDL9 <--- reference speeds

PV-T71F-YDF9 <--- 700, 1.75

PV-T71F-YDE9 <--- 730, 1.85

PV-T71F-YDP9 <--- 750, 1.9

Also I had four GT SKUs from 470-500-550-600MHz.

As soon as XFX opens up in Cali I will call to confirm. If they gave me bad info I will be mad. :mad:

Also just had a thought. These card use a split clock speed like the 7800 GTX 256MB. I wonder if that could be the difference. (Still the memory is off.)
03-09-2006, 08:59 AM
freecableguy

Your SKU speeds don't match those on the XFX website. Something is off.

http://www.xtremesystems.org/forums/...ad.php?t=91927

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