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SLI Predicament

Which option is best?

  • Buy another socket 775 motherboard.

    Votes: 2 28.6%
  • Buy AM3 motherboard and upgrade everything.

    Votes: 5 71.4%
  • Screw it and just stick to 1 GPU.

    Votes: 0 0.0%

  • Total voters
Apr 26, 2006
347 (0.06/day)
Processor i7 4790
Motherboard Asrock Z97 ITX
Cooling Corsair A50 (CPU) and Antec Kuhler 620 (GPU)
Memory G. Skill 8GB 1866
Video Card(s) Gigabyte 290X
Storage OCZ SSD and 1TB Hardrive
Display(s) Dell S2415h
Case Cheap Cougar Case
Power Supply Corsair 650w PSU
Software Windows 10
I bought two GTS 250 cards, which I obviously want to run in SLI. Currently I don't have a SLI compatible motherboard. So I am asking whether I should buy a cheap socket 775 SLI board, or slightly upgrade to a AM3 socket board with DDR3. I could sell my current CPU/Motherboard/DDR2 RAM and get a Phenom II 555 and DDR3 RAM. If nothing works out well I can always just split the cards up between my brother's computer and mine. I am wondering if this is a decent 775 motherboard? I would kind of feel dumb buying that for $70, when I could upgrade to this for $90.


Lab Extraordinaire
May 7, 2009
5,656 (1.25/day)
London, UK
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Mouse Razer Imperator 2012
Keyboard Corsair K90
Software Windows 7 SP1 X64 | Ubuntu 16.04LTS
which board do you have, you could try hacked nvidia drivers


Semi-Retired Folder
Nov 22, 2005
28,194 (4.87/day)
Indiana, USA
Processor Intel Core i7 10850K@5.2GHz
Motherboard AsRock Z470 Taichi
Cooling Corsair H115i Pro w/ Noctua NF-A14 Fans
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Read that thread on enabling SLi on non-SLi motherboards, and keep your current setup.

Though the second slot being an x4 might hurt performance slightly, so maybe upgrading to a cheap P45 board would be a decent move if you can get it super cheap.

If you want to go the true SLi route, then the 780i board is an excellent choice, I'm running almost the exact same board in my secondary rig right now, and it ran as my primary rig up until a few months ago. My board was from eVGA, but the XFX you are looking at and my eVGA are both reference boards made by nVidia with eVGA/XFX stickers slapped on.


New Member
Apr 9, 2010
773 (0.18/day)
Atlanta/Marietta, GA
System Name Norbert
Processor Intel Core i7 920
Motherboard Gigabyte X58A-UD5
Cooling Corsair H50 with 2x Scythe GT AP-14
Memory 3x 2gb G.Skill 1600Mhz C9 DDR3
Video Card(s) MSI Twin Frozr II GTX 465 GE & EVGA GTS 450 SC
Storage 2x 1Tb Samsung Sprinpoint F3 7200rpm
Display(s) Dell U3011, Dell 2408WFP, Samsung 2693HM
Case Lian Li V1020R
Audio Device(s) Creative X-Fi Titanium
Power Supply Seasonic X-750
Software Windows 7 Ultimate 64bit
Socket 775 is dead, upgrade to AM3. But if you don't mind doing the SLI hacking on AM3 boards, you can get a pretty decent one that uses the 850 south bridge and get USB3.0 and SATA 3.
May 27, 2009
3,405 (0.76/day)
Brunswick, GA
System Name Haz0
Processor i7-2700K
Motherboard Gigabyte Z68X-UD3H-B3
Cooling Chicken Stock
Memory 16GB G.Skill Ripshits X 1600MHz
Video Card(s) Sapphire 5850
Storage Kingston 128GB SSD + WD Black 640GB + 2x 1.5TB
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Case Antec NSK-4482 Orangified
Audio Device(s) X-Fi XtremeGamer
Power Supply Corsair TX750W
Software Windows 7: Electric Boogaloo
You can grab an EVGA nForce 750i SLI 775 board from EVGA for $45 shipped, it's about halfway down the page there. Just getting and using that will be easier and cheaper than going to AM3 methinks.
Jan 2, 2008
3,283 (0.65/day)
System Name Thakk
Processor i7 6700k @ 4.5Ghz
Motherboard Gigabyte G1 Z170N ITX
Cooling H55 AIO
Memory 32GB DDR4 3100 c16
Video Card(s) Zotac RTX3080 Trinity
Storage Corsair Force GT 120GB SSD / Intel 250GB SSD / Samsung Pro 512 SSD / 3TB Seagate SV32
Display(s) Acer Predator X34 100hz IPS Gsync / HTC Vive
Case QBX
Audio Device(s) Realtek ALC1150 > Creative Gigaworks T40 > AKG Q701
Power Supply Corsair SF600
Mouse Logitech G900
Keyboard Ducky Shine TKL MX Blue + Vortex PBT Doubleshots
Software Windows 10 64bit
Benchmark Scores http://www.3dmark.com/fs/12108888
afaik, there is no am3 SLI motherboard out there.. you can go P55 + i3 / i5 though if you still want sli and stuff..


Sep 27, 2006
7,894 (1.44/day)
Processor Intel Core i9 11900K
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Power Supply Asus Thor 1200w
Mouse Asus Strix Evolve
Keyboard Asus Strix Claymore
+1 try the SLI hack