Overclock.net › Forums › Graphics Cards › NVIDIA › Will I have any issues SLI'ing a 2gb 680 with a 4gb 680
New Posts  All Forums:Forum Nav:

Will I have any issues SLI'ing a 2gb 680 with a 4gb 680

post #1 of 4
Thread Starter 
I want to SLI a 2gb 680 wtih a 4gb 680 EVGA classified card.


Will I have any issues doing this? I know the 4gb card will only use 2gb of vram and I'm okay with that, I just want to know if everything else will go smoothly


thx
post #2 of 4
Quote:
I want to SLI a 2gb 680 wtih a 4gb 680 EVGA classified card.


Will I have any issues doing this? I know the 4gb card will only use 2gb of vram and I'm okay with that, I just want to know if everything else will go smoothly


thx

Your 4Gb card well be capped if you will at 2Gb. Some say its possible and I have heard of people not being able to SLI 2Gb and 4Gb cards also .... as you probably know the clock speeds have to match for the cards to SLI. I would sell the 4Gb and get another 2Gb since there's already enough dramas SLI-ing same cards lol.
Have a read in other forums:
http://www.techpowerup.com/forums/showthread.php?t=168437
http://www.tomshardware.com/forum/393250-33-possible

In the second post people have tried and failed so if they're not lying lol there you go.
Odin
(20 items)
 
Tyr
(15 items)
 
 
CPUMotherboardGraphicsGraphics
Intel i7 - 3930k sabertooth x79 GTX 580 GTX 580 
RAMHard DriveHard DriveHard Drive
8GHz Patriot-S kit (2 x 4GHz) OCZ Vector SSD 2TB Seagate 2TB Seagate 
Hard DriveCoolingCoolingOS
500 GB external Seagate Antec 620  2 x Antec Case Fans, 3 x Noctua NF-F12 Fans, 3 ... Windows 7 
MonitorKeyboardPowerCase
LG Flatron W2753VC TT eSports  Antec HGC 900 Antec P280-W 
MouseMouse PadAudioAudio
CM Storm Sentinel Zero-G Shattered Horizon Edition Star Craft 2 - Heart of the Swarm Edition Logitech Z906 5.1 Surround sound  Steelseries Gaming Headphones 
  hide details  
Reply
Odin
(20 items)
 
Tyr
(15 items)
 
 
CPUMotherboardGraphicsGraphics
Intel i7 - 3930k sabertooth x79 GTX 580 GTX 580 
RAMHard DriveHard DriveHard Drive
8GHz Patriot-S kit (2 x 4GHz) OCZ Vector SSD 2TB Seagate 2TB Seagate 
Hard DriveCoolingCoolingOS
500 GB external Seagate Antec 620  2 x Antec Case Fans, 3 x Noctua NF-F12 Fans, 3 ... Windows 7 
MonitorKeyboardPowerCase
LG Flatron W2753VC TT eSports  Antec HGC 900 Antec P280-W 
MouseMouse PadAudioAudio
CM Storm Sentinel Zero-G Shattered Horizon Edition Star Craft 2 - Heart of the Swarm Edition Logitech Z906 5.1 Surround sound  Steelseries Gaming Headphones 
  hide details  
Reply
post #3 of 4
Quote:
Originally Posted by SeD669 View Post

Your 4Gb card well be capped if you will at 2Gb. Some say its possible and I have heard of people not being able to SLI 2Gb and 4Gb cards also .... as you probably know the clock speeds have to match for the cards to SLI. I would sell the 4Gb and get another 2Gb since there's already enough dramas SLI-ing same cards lol.
Have a read in other forums:
http://www.techpowerup.com/forums/showthread.php?t=168437
http://www.tomshardware.com/forum/393250-33-possible

In the second post people have tried and failed so if they're not lying lol there you go.

Clock speeds do not need to match. It'll run at the lowest clockspeed out of the cards that you use in your SLI configuration. That means if one is at 1100, and one is at 1050, both will be ran at 1050.

In terms of 2GB and 4GB being SLI'd, it'll only use as much VRAM as the lowest amount in the configuration. In other words, it would only show up using 2GB total.
post #4 of 4
Quote:
Clock speeds do not need to match. It'll run at the lowest clockspeed out of the cards that you use in your SLI configuration. That means if one is at 1100, and one is at 1050, both will be ran at 1050.
Hmmm interesting. I have tried this with GTX 580's and it failed. When I searched for my 2nd 580 everyone on this forum warned me that the clock speeds have to match lol.
Quote:
In terms of 2GB and 4GB being SLI'd, it'll only use as much VRAM as the lowest amount in the configuration. In other words, it would only show up using 2GB total.
This is what I am thinking but there are people out there claiming it did not work for them. The second link I gave shows an interesting story..... unless they're trolling right?
Odin
(20 items)
 
Tyr
(15 items)
 
 
CPUMotherboardGraphicsGraphics
Intel i7 - 3930k sabertooth x79 GTX 580 GTX 580 
RAMHard DriveHard DriveHard Drive
8GHz Patriot-S kit (2 x 4GHz) OCZ Vector SSD 2TB Seagate 2TB Seagate 
Hard DriveCoolingCoolingOS
500 GB external Seagate Antec 620  2 x Antec Case Fans, 3 x Noctua NF-F12 Fans, 3 ... Windows 7 
MonitorKeyboardPowerCase
LG Flatron W2753VC TT eSports  Antec HGC 900 Antec P280-W 
MouseMouse PadAudioAudio
CM Storm Sentinel Zero-G Shattered Horizon Edition Star Craft 2 - Heart of the Swarm Edition Logitech Z906 5.1 Surround sound  Steelseries Gaming Headphones 
  hide details  
Reply
Odin
(20 items)
 
Tyr
(15 items)
 
 
CPUMotherboardGraphicsGraphics
Intel i7 - 3930k sabertooth x79 GTX 580 GTX 580 
RAMHard DriveHard DriveHard Drive
8GHz Patriot-S kit (2 x 4GHz) OCZ Vector SSD 2TB Seagate 2TB Seagate 
Hard DriveCoolingCoolingOS
500 GB external Seagate Antec 620  2 x Antec Case Fans, 3 x Noctua NF-F12 Fans, 3 ... Windows 7 
MonitorKeyboardPowerCase
LG Flatron W2753VC TT eSports  Antec HGC 900 Antec P280-W 
MouseMouse PadAudioAudio
CM Storm Sentinel Zero-G Shattered Horizon Edition Star Craft 2 - Heart of the Swarm Edition Logitech Z906 5.1 Surround sound  Steelseries Gaming Headphones 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: NVIDIA
Overclock.net › Forums › Graphics Cards › NVIDIA › Will I have any issues SLI'ing a 2gb 680 with a 4gb 680