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7900 GT SLI'ing?!!?

post #1 of 7
Thread Starter 
Alright i have a problem. I have a XFX 7900GT OC 550mhz/1.6ghz (stock from factory). Now i want to SLI but the problem is they don't make my card any more (PV-TG17-UDP7) I've checked like every website, checked ebay but nothing. So i phoned up XFX and started complaining....and they said that i could use ANY card aslong as the GPU (7900 GT) and the ram (256) is the same. O.k that made my feel better. I goto the store to buy an MSI 7900 GT and the guy is like it won't work that good because both the cards are different?! Different chips components/software etc....not a good idea. Ohhh o.k. So i've also tracked down another XFX card that runs as 520 OC (can't OC any more) but not sure if that's a good idea since one card is at 520 and another is at 550. So my question is:
1) Can i run 2 different cards as long as the gpu is the same or will i have problems?
2) Should i get the 520 OC edition from XFX?
3) Any other suggestions on what i can do? (besides sell my card).
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AMD OPTY (330x8.5) MSI KN8 Neo4 Nvidia 7900GT OC 256meg 2 GIG OCZ DDR500 
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AMD OPTY (330x8.5) MSI KN8 Neo4 Nvidia 7900GT OC 256meg 2 GIG OCZ DDR500 
Hard DriveOSMonitorKeyboard
250 WD & 120 Maxtor Microsoft Windows XP 19" Samsung 2ms 2000:1 IBM 
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430W Antec Logitech MX510 
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post #2 of 7
Quote:
Originally Posted by Wutang View Post
Alright i have a problem. I have a XFX 7900GT OC 550mhz/1.6ghz (stock from factory). Now i want to SLI but the problem is they don't make my card any more (PV-TG17-UDP7) I've checked like every website, checked ebay but nothing. So i phoned up XFX and started complaining....and they said that i could use ANY card aslong as the GPU (7900 GT) and the ram (256) is the same. O.k that made my feel better. I goto the store to buy an MSI 7900 GT and the guy is like it won't work that good because both the cards are different?! Different chips components/software etc....not a good idea. Ohhh o.k. So i've also tracked down another XFX card that runs as 520 OC (can't OC any more) but not sure if that's a good idea since one card is at 520 and another is at 550. So my question is:
1) Can i run 2 different cards as long as the gpu is the same or will i have problems?
2) Should i get the 520 OC edition from XFX?
3) Any other suggestions on what i can do? (besides sell my card).
You installed?It work in SLI?Go and try.Nothing going to happen if don't work.
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E6850 SLA,G0,@3.7 P5N32 SLi/680iSB=Jing ting/nb=spirit II[1203]bios] MSI 470 GTX[order on his way] 4 gig ocz Reapers pc 8500 
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2 WD 250gig 16mb/raid 0\1 WD640 AALS 32MB win xp pro sp3/Windows 7 Beta LCD,22"=Samsung 2MS,226BW,52"samsung LN5A550 Thermaltake xaser 
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CPUMotherboardGraphicsRAM
E6850 SLA,G0,@3.7 P5N32 SLi/680iSB=Jing ting/nb=spirit II[1203]bios] MSI 470 GTX[order on his way] 4 gig ocz Reapers pc 8500 
Hard DriveOSMonitorKeyboard
2 WD 250gig 16mb/raid 0\1 WD640 AALS 32MB win xp pro sp3/Windows 7 Beta LCD,22"=Samsung 2MS,226BW,52"samsung LN5A550 Thermaltake xaser 
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post #3 of 7
Two different manufacturer cards will work in SLI as long as they are the same core e.g 7900GT & 7900GT, 7900GS & 7900GS........no pick & mix
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Corsair Dominator Platinum @ 2133 9-10-10-24, 2T 2x Corsair GS 120gb SSD Windows 8 QNIX QX2710 Evolution ll @ 120hz 
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post #4 of 7
Quote:
Originally Posted by Joeking78 View Post
Two different manufacturer cards will work in SLI as long as they are the same core e.g 7900GT & 7900GT, 7900GS & 7900GS........no pick & mix
You see go for it and have fun and happy OC.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6850 SLA,G0,@3.7 P5N32 SLi/680iSB=Jing ting/nb=spirit II[1203]bios] MSI 470 GTX[order on his way] 4 gig ocz Reapers pc 8500 
Hard DriveOSMonitorKeyboard
2 WD 250gig 16mb/raid 0\1 WD640 AALS 32MB win xp pro sp3/Windows 7 Beta LCD,22"=Samsung 2MS,226BW,52"samsung LN5A550 Thermaltake xaser 
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oczgamexstream700 wtt x blade/modded Razor deathadder thermaltake gamer pad/led 
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My System
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CPUMotherboardGraphicsRAM
E6850 SLA,G0,@3.7 P5N32 SLi/680iSB=Jing ting/nb=spirit II[1203]bios] MSI 470 GTX[order on his way] 4 gig ocz Reapers pc 8500 
Hard DriveOSMonitorKeyboard
2 WD 250gig 16mb/raid 0\1 WD640 AALS 32MB win xp pro sp3/Windows 7 Beta LCD,22"=Samsung 2MS,226BW,52"samsung LN5A550 Thermaltake xaser 
PowerCaseMouseMouse Pad
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post #5 of 7
I believe if you put to cards with the same core and SLI them they will work BUT If 1 has more memory or 1 has a higher clock then it underclock the the card so there both the same.
Example: 1x 7300gt 512 @400 & 1x 7300gt 256 @375 = 2x 7300gt 256(x2) SLI @375
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post #6 of 7
both cards will definately work together. both cards will operate at the slower speeds of the two.


although... why SLI 2 7900GT's at this point? sell one for $200 and use the $300ish from the 2nd to buy a 8800GTS
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post #7 of 7
Thread Starter 
Would 2 SLI 7900's gt's running at 550mhz/1.6ghz run faster than one 8800? Or would the 8800 outperform both of them?
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD OPTY (330x8.5) MSI KN8 Neo4 Nvidia 7900GT OC 256meg 2 GIG OCZ DDR500 
Hard DriveOSMonitorKeyboard
250 WD & 120 Maxtor Microsoft Windows XP 19" Samsung 2ms 2000:1 IBM 
PowerCaseMouse
430W Antec Logitech MX510 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD OPTY (330x8.5) MSI KN8 Neo4 Nvidia 7900GT OC 256meg 2 GIG OCZ DDR500 
Hard DriveOSMonitorKeyboard
250 WD & 120 Maxtor Microsoft Windows XP 19" Samsung 2ms 2000:1 IBM 
PowerCaseMouse
430W Antec Logitech MX510 
  hide details  
Reply
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