7800GT sli vs 7900GT
- Thread starter munisgtm
- Start date
It's a tough one, the 7800gt will be slightly quicker in games that support SLI however the 7900gt offers an upgrade path.
i ll will have no plan to upgrade graphics card after i get this system,for overclocking ill do it only mildy cuz im afraid it will fry up the cards ,i just saw the toms vga card chart 7800 gt is shown performing better than 7800gtx extreme (i think it is same as 7900gt) .
hey one more question what is this 256mb 7800gt sli ? toms chart also giving 512mb 7800gt ? whats with this ?
hey one more question what is this 256mb 7800gt sli ? toms chart also giving 512mb 7800gt ? whats with this ?
Each of the 7800GTs have 256megs of ram, but there were the special edition 7800GTs with the dual GT chips on the card, and they had 512megs so it's probably that. The 7800GT SLI should pull better frames than the single 7900GT, especially if you are using higher resolutions.
Yeah, have fun with that SLI stuff. Vsync is a harder feature to use since it is syncronizing two GPU's instead of one. Triple Buffering will help, but will require a third party application to force it through (DXTweaker I believe). You will lose dual monitor support and when if you go witout vsync the tearing is pretty bad on an LCD. If you use it, sometimes the frames are still good but it seems to be choppy. If you start your computer up and see widows tell you that you need to connect the SLI bridge to the cards even when it is already on there, don't be surprised.
I don't think dual GPU solutions are worth it yet. They do offer a good range of performance increase depending on the game, but cause more problems and longer trouble shootings. I know that there are those out there who don't have problems with SLI or Crossfire so don't just take my advice.
I don't think dual GPU solutions are worth it yet. They do offer a good range of performance increase depending on the game, but cause more problems and longer trouble shootings. I know that there are those out there who don't have problems with SLI or Crossfire so don't just take my advice.
Here's an alternate view to consider (or not) 
7900GTs are extremely easy to volt mod ($12 conductive pen, and $10 Digital multimeter from sears). The mod is completely revearsable and will not void any waranty. I wouldn't even mention this except you said you would like to OC but are a bit hesitent.
This is one of the easiest mods ever and a 7900GT at 1.4v core (which is the actual default core voltage before GTs are UNDERVOLTED by the manufacturer I'd go 1.5v which is still within spec) will give you clocks of 600MHz easy and likely well over 650MHzcore.
A single volt moded 7900GT will be pretty close to the 78xx series SLI. Keep in mind though the conductive pen, DMM and a good cooler to replace the stock cooler will cost you $35 to $65 additional. Best bang for the buck by far right now. This will give you the performance AND the upgrade path, plus you don't have to deal with SLI at all, not that SLI is a big deal...
I would also consider eVGA as well if you go this route as they are the only company that will allow you to swap in an aftermarket GPU cooler and still provide the full warranty.
my $.02 and good luck on your choice.
My 7900GT gets me over 6700 in 3dmark06 and over 100avgFPS in FEAR rigs in me sig.
7900GTs are extremely easy to volt mod ($12 conductive pen, and $10 Digital multimeter from sears). The mod is completely revearsable and will not void any waranty. I wouldn't even mention this except you said you would like to OC but are a bit hesitent.
This is one of the easiest mods ever and a 7900GT at 1.4v core (which is the actual default core voltage before GTs are UNDERVOLTED by the manufacturer I'd go 1.5v which is still within spec) will give you clocks of 600MHz easy and likely well over 650MHzcore.
A single volt moded 7900GT will be pretty close to the 78xx series SLI. Keep in mind though the conductive pen, DMM and a good cooler to replace the stock cooler will cost you $35 to $65 additional. Best bang for the buck by far right now. This will give you the performance AND the upgrade path, plus you don't have to deal with SLI at all, not that SLI is a big deal...
I would also consider eVGA as well if you go this route as they are the only company that will allow you to swap in an aftermarket GPU cooler and still provide the full warranty.
my $.02 and good luck on your choice.
My 7900GT gets me over 6700 in 3dmark06 and over 100avgFPS in FEAR rigs in me sig.
Stock vs Stock it's a no brainer 7800 GT SLI is quicker then 7900 GTX, let alone a 7900 GT stock.
Performance per watt is with the 7900 GT 2 7800 GT will consume ~ 110W, with a 7900 GT consuming 48W, since 7800 GT SLI is about 50-75% faster then 7900 GT.
This review has a 7900 GT and 7800 GT SLI in it to compare.
http://techreport.com/reviews/2006q1/geforce-7600-7900/index.x?pg=8
Performance per watt is with the 7900 GT 2 7800 GT will consume ~ 110W, with a 7900 GT consuming 48W, since 7800 GT SLI is about 50-75% faster then 7900 GT.
This review has a 7900 GT and 7800 GT SLI in it to compare.
http://techreport.com/reviews/2006q1/geforce-7600-7900/index.x?pg=8
What?
No way. 7800GTs will smoke a 7900GT.
Sh1T, my 7800GTs were faster than my X1900XTX in some games.
what ??? 7800gt sli smokes 7900GTX and x1900xtx? then i should certainly go for 7800gt sli ? if this is true then there is no reason to buy 7900gt
1900XTX>7900GTX imo
games like serious sam 2 etc are nvidia's domain and even a 7800GTX may perform 50% faster to 1900XTX, so not that big a deal.
7800GT SLi may be competitve with 7900GTX, but more power consumption and all and who gives both of them at the same price.
games like serious sam 2 etc are nvidia's domain and even a 7800GTX may perform 50% faster to 1900XTX, so not that big a deal.
7800GT SLi may be competitve with 7900GTX, but more power consumption and all and who gives both of them at the same price.
but in most of the games 7800gt sli and 7900gtx are very very close. i can get 7800GT sli/7900gt for rs20000(333.3$) ,7900GTX rs 36000(600$) thats a lot of difference i think i should go for 7800gt sli rather than 7900gt
UMM no.. to the same performance part, 7600 GT SLI beats a 7900 GT stock, so 7800 GT SLI beats it even more.
7900 GT does have better performance/watt though.
Dude. If this is the last video card upgrade for a while then I would definately go with the SLI.
More performance for your buck.
More performance for your buck.
No offense but read what I wrote.
I didn't say they cover volt modding. I said it is revearsable and won't VOID the warranty because once revearsed it never happened.
Well "smokes" is subjective. But my 7900GT at 720core and 1900DDR beats all but 2 X1900XT(X) rigs listed on the 3dMark06 DB at Hardforum. My rig also beats most of the 7800GT SLI rigs. But that honestly is because of my whole system not just the vid card.
In my experience 1000 points of 3DMark06 translates to less than 10FPS average give or take and depending on the game. So unless your favorite game is synthetics like 3dMark then no 7800 GT SLI does not SMOKE a tuned 7900GT system. They are pretty close. It also is pretty close to the STOCK ATI X1900, but I'm not sure how they OC as I have never owned one, so I won't say they are close.
Setting asside the fanboy stuff, Why fill the second socket with 78xx cards that can't OC due to larger die size?
78xx SLI only smokes a single 7900GT at stock. and if you are NOT going to volt mod then the 7900GT won't come real close.
Let me know if you have a 78xx SLI system doing better Blowing away 100 avgFPS in FEAR, then you can tell me you can "smoke" my 7900GT.
Seriously, anyone?
Lets go to the tape
My screenies are good to go. BTW my 6725 '06 score isn't an artifact riddled suicide. Its stable and what I play at. So lets check the hyperbole
Elfear
Diamond Member
- May 30, 2004
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Well that would be fraud which is not only illegal but also socially unethical. That kind of stuff is frowned on around here so I suggest you keep those comments to yourself. Or better yet don't commit or encourage fraud anywhere.
I'll be your Huckleberry. Tell me all your settings and I'll see what I can do.
7900gt overclocked and 7800gt sli are pretty close than ,man i was leaning towards 7800GTsli but oatman made me stand in the middle yet again!
@oatman your score is hot , tell elfear your settings and stuff so all can get a comparsion
@oatman your score is hot , tell elfear your settings and stuff so all can get a comparsion
LOL! Doc was my favorite
Seriously OatMan, you must be running some pretty lame settings to be getting those frames in FEAR with a single 7900GT considering Anandtech pushed 76 frames out of it without AA at 1280x1024: Click.
Even a 7900GT SLI is only around 10 frames from what you were saying you have with one overclocked 7900GT.
VOLT Modded 7900 GT vs 7800 GT SLI maybe close, remember 7800 GT SLI STOCK produced speeds in excess of a stock 7900 GTX.
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