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Thread: 7900GTX vs 7800GTX512 vmoded

  1. 03-09-2006, 07:31 AM #26
    Vapor
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    XFX has their XXX (UDD7) at 560/1650

    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!
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  2. 03-09-2006, 07:38 AM #27
    eva2000
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    woah OPP.. that's nice
    ---
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  3. 03-09-2006, 07:43 AM #28
    kiwi
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    1.7V is hard mod I guess? Can you post mods for it or is it the same as for 7800?
    Last edited by kiwi; 03-09-2006 at 07:46 AM.
    ...
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  4. 03-09-2006, 07:51 AM #29
    OPPAINTER
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    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
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  5. 03-09-2006, 07:52 AM #30
    perkam
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    Quote Originally Posted by eva2000
    woah OPP.. that's nice
    Yes ...not a lot of people make the news JUST by showing up

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

    Results OPP?

    Perkam
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  6. 03-09-2006, 08:00 AM #31
    HousERaT
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    Come on OPP.... you've had that card a whole day and no new threads? You slippin'? NDO?
    The little air system that could.

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  7. 03-09-2006, 08:03 AM #32
    _JP_
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    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

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  8. 03-09-2006, 08:06 AM #33
    OPPAINTER
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    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

    OPP
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  9. 03-09-2006, 08:07 AM #34
    OPPAINTER
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    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

    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
    Last edited by OPPAINTER; 03-09-2006 at 08:14 AM.
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  10. 03-09-2006, 08:09 AM #35
    _JP_
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    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

    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??
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  11. 03-09-2006, 08:09 AM #36
    nn_step
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    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
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  12. 03-09-2006, 08:10 AM #37
    freecableguy
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    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).
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  13. 03-09-2006, 08:11 AM #38
    freecableguy
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    @OPP

    Can you post your card manufacturer/model number and verify the memory type installed? 1.1ns, 1.2ns????
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  14. 03-09-2006, 08:13 AM #39
    _JP_
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    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??
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  15. 03-09-2006, 08:15 AM #40
    AACDIRECT
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    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

    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.
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  16. 03-09-2006, 08:17 AM #41
    _JP_
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    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.
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  17. 03-09-2006, 08:18 AM #42
    OPPAINTER
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    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

    OPP
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  18. 03-09-2006, 08:18 AM #43
    freecableguy
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    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+?
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  19. 03-09-2006, 08:20 AM #44
    perkam
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    Quote Originally Posted by _JP_
    750/1900??
    Dont think so...in XFX site the XXX Edition its 700/1800.
    If the man says 750/1900 ... then their 750/1900

    Perkam
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  20. 03-09-2006, 08:21 AM #45
    _JP_
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    Quote Originally Posted by perkam
    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...
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  21. 03-09-2006, 08:29 AM #46
    Supertim0r
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    Attached Thumbnails Attached Thumbnails Click image for larger version.  Name: 7900.JPG  Views: 827  Size: 89.6 KB  ID: 44524  
    Last edited by Supertim0r; 03-09-2006 at 08:32 AM.
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  22. 03-09-2006, 08:53 AM #47
    Frozendeath
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    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!
    One of these days I will do a full set of Benches, until then....

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  23. 03-09-2006, 08:56 AM #48
    Vapor
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    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.
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  24. 03-09-2006, 08:56 AM #49
    AACDIRECT
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    Quote Originally Posted by perkam
    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. )

    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.

    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.)
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  25. 03-09-2006, 08:59 AM #50
    freecableguy
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    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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