Overclock.net › Forums › Components › Memory › What makes a mobo SLI or CFX capable
New Posts  All Forums:Forum Nav:

What makes a mobo SLI or CFX capable

post #1 of 14
Thread Starter 
Is it as long as there's two pci-e 2.0 slots, whether one is at x16 or one is at either x8 or x4 or is there an additional requirement to allow it for SLI or CFX?
Edited by venomblade - 4/12/11 at 1:38pm
post #2 of 14
Most motherboards with two pcie slots will work with crossfire, a motherboard has to be sli certified and have two pcie slots with at least 8x bandwidth ( they won't certify 16x, 4x) so it has to be either 8x, 8x ; 16x , 8x or 16x, 16x

That being said there are other things involved but those are the big ones, they also have to pass sli certification and usually have to include an sli bridge, although it's obviously possible to run sli on a board without certification thus the hacked drivers and hacked bios you see on ocn :-)
Edited by appleg33k85 - 4/12/11 at 1:39pm
The Laptop
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 2860QM AMD Radeon HD 6770M Corsair Vengence 1600MHz Samsung 840 Pro 256GB 
OSMonitor
Mac OS X 10.8 1680 x 1050 anti-glare high resolution  
  hide details  
Reply
The Laptop
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 2860QM AMD Radeon HD 6770M Corsair Vengence 1600MHz Samsung 840 Pro 256GB 
OSMonitor
Mac OS X 10.8 1680 x 1050 anti-glare high resolution  
  hide details  
Reply
post #3 of 14
There is an SLI hack that lets you run SLI on any motherboard that has 2 pci-e slots though
SuperMegaPwnsauce
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 4770k Asus Z87-PRO MSI GTX 1080 Gaming X Gskill Ripjaws X 19200 16GB 
Hard DriveCoolingOSMonitor
Samsung 850 EVO 500GB SSD BeQuiet! Dark Rock Pro 3 Windows 10 Home 64Bit  Dell S2716DG 2K 144hz G-Sync 
KeyboardPowerCaseMouse
Logitech G910 Orion Spectrum Seasonic Flagship PRIME TITANIUM 650W Fractal Design Define R5 W/ 3 Phanteks PH-F140S... Logitech G Pro 
Mouse PadAudioAudio
PC Gaming Master Race Glorious XXXL Pad & Razer... Creative Sound Blaster Z & Schiit M&M 2 Uber/Mu... HifiMan HE400i & Antlion ModMic 4.0 
  hide details  
Reply
SuperMegaPwnsauce
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 4770k Asus Z87-PRO MSI GTX 1080 Gaming X Gskill Ripjaws X 19200 16GB 
Hard DriveCoolingOSMonitor
Samsung 850 EVO 500GB SSD BeQuiet! Dark Rock Pro 3 Windows 10 Home 64Bit  Dell S2716DG 2K 144hz G-Sync 
KeyboardPowerCaseMouse
Logitech G910 Orion Spectrum Seasonic Flagship PRIME TITANIUM 650W Fractal Design Define R5 W/ 3 Phanteks PH-F140S... Logitech G Pro 
Mouse PadAudioAudio
PC Gaming Master Race Glorious XXXL Pad & Razer... Creative Sound Blaster Z & Schiit M&M 2 Uber/Mu... HifiMan HE400i & Antlion ModMic 4.0 
  hide details  
Reply
post #4 of 14
Thread Starter 
Quote:
Originally Posted by killeraxemannic View Post
There is an SLI hack that lets you run SLI on any motherboard that has 2 pci-e slots though
does the SLI hack allow use for x16 and x4 together? Is there a performance degradation in contrast to using a "certified" SLI board?
post #5 of 14
Quote:
Originally Posted by venomblade View Post
does the SLI hack allow use for x16 and x4 together? Is there a performance degradation in contrast to using a "certified" SLI board?
You could use the 16x and 4x yes. You would notice about a 10% performance loss running a card in a 4x slot.
SuperMegaPwnsauce
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 4770k Asus Z87-PRO MSI GTX 1080 Gaming X Gskill Ripjaws X 19200 16GB 
Hard DriveCoolingOSMonitor
Samsung 850 EVO 500GB SSD BeQuiet! Dark Rock Pro 3 Windows 10 Home 64Bit  Dell S2716DG 2K 144hz G-Sync 
KeyboardPowerCaseMouse
Logitech G910 Orion Spectrum Seasonic Flagship PRIME TITANIUM 650W Fractal Design Define R5 W/ 3 Phanteks PH-F140S... Logitech G Pro 
Mouse PadAudioAudio
PC Gaming Master Race Glorious XXXL Pad & Razer... Creative Sound Blaster Z & Schiit M&M 2 Uber/Mu... HifiMan HE400i & Antlion ModMic 4.0 
  hide details  
Reply
SuperMegaPwnsauce
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 4770k Asus Z87-PRO MSI GTX 1080 Gaming X Gskill Ripjaws X 19200 16GB 
Hard DriveCoolingOSMonitor
Samsung 850 EVO 500GB SSD BeQuiet! Dark Rock Pro 3 Windows 10 Home 64Bit  Dell S2716DG 2K 144hz G-Sync 
KeyboardPowerCaseMouse
Logitech G910 Orion Spectrum Seasonic Flagship PRIME TITANIUM 650W Fractal Design Define R5 W/ 3 Phanteks PH-F140S... Logitech G Pro 
Mouse PadAudioAudio
PC Gaming Master Race Glorious XXXL Pad & Razer... Creative Sound Blaster Z & Schiit M&M 2 Uber/Mu... HifiMan HE400i & Antlion ModMic 4.0 
  hide details  
Reply
post #6 of 14
Er, it's the chipset (Northbridge). Some MOBos have the ability to do either, I am thinking of the X58 and the P67 series. But older boards are built to handle one or the other, with out the hack.

If it's an older Intel Motherboard, then the ability to do SLI is related to it having an nvidia chipset and Crossfire isn't.

For older AMD boards, they either have the nvidia Northbridge or they have the AMD one.

If they have more than one PCI-E slot and the appropriate Northbridge, then they are capable of doing one or the other, or both.
Pro Tem
(15 items)
 
  
CPUMotherboardGraphicsGraphics
i5 25oo MSI P67A-GD65 B3 MSi GTX56oTX-Ti Asus Direct CUii GTX56o Ti 
RAMHard DriveOptical DriveCooling
CORSAIR XMS3 8GB C3oo 128GB / 2x5ooGB WDGreen / 1.5TB SG LG DvD Burner Hyper 212+ 
OSMonitorPowerCase
Win7 HP 64 AcerH233H / Acer X2o3H Antec 75oW Raidmax Smilodon Extreme fan mod 
  hide details  
Reply
Pro Tem
(15 items)
 
  
CPUMotherboardGraphicsGraphics
i5 25oo MSI P67A-GD65 B3 MSi GTX56oTX-Ti Asus Direct CUii GTX56o Ti 
RAMHard DriveOptical DriveCooling
CORSAIR XMS3 8GB C3oo 128GB / 2x5ooGB WDGreen / 1.5TB SG LG DvD Burner Hyper 212+ 
OSMonitorPowerCase
Win7 HP 64 AcerH233H / Acer X2o3H Antec 75oW Raidmax Smilodon Extreme fan mod 
  hide details  
Reply
post #7 of 14
This is probably the stupidest question ever, but I cannot stop wonder... To SLI is necessary that the two cards are the same model right? Ex 2x 580 or 2x 560 etc
Rubbish
(15 items)
 
  
CPUMotherboardGraphicsRAM
E7400 @ 4ghz 1.376v Asus P5Q3 Sapphire HD6870 Kingston 4GB DDR3 1333MHZ 
Hard DriveHard DriveOSOS
Samsung Spinpoint F3 WD Green Windows 7 64bit Lubuntu 64bit 
PowerCaseMouse
OCZ ModXStream 700W Cooler Master 690 II with side window Razer Deathadder Black Edition 
  hide details  
Reply
Rubbish
(15 items)
 
  
CPUMotherboardGraphicsRAM
E7400 @ 4ghz 1.376v Asus P5Q3 Sapphire HD6870 Kingston 4GB DDR3 1333MHZ 
Hard DriveHard DriveOSOS
Samsung Spinpoint F3 WD Green Windows 7 64bit Lubuntu 64bit 
PowerCaseMouse
OCZ ModXStream 700W Cooler Master 690 II with side window Razer Deathadder Black Edition 
  hide details  
Reply
post #8 of 14
Quote:
Originally Posted by lambecrikas View Post
This is probably the stupidest question ever, but I cannot stop wonder... To SLI is necessary that the two cards are the same model right? Ex 2x 580 or 2x 560 etc
Yepp same model only
SuperMegaPwnsauce
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 4770k Asus Z87-PRO MSI GTX 1080 Gaming X Gskill Ripjaws X 19200 16GB 
Hard DriveCoolingOSMonitor
Samsung 850 EVO 500GB SSD BeQuiet! Dark Rock Pro 3 Windows 10 Home 64Bit  Dell S2716DG 2K 144hz G-Sync 
KeyboardPowerCaseMouse
Logitech G910 Orion Spectrum Seasonic Flagship PRIME TITANIUM 650W Fractal Design Define R5 W/ 3 Phanteks PH-F140S... Logitech G Pro 
Mouse PadAudioAudio
PC Gaming Master Race Glorious XXXL Pad & Razer... Creative Sound Blaster Z & Schiit M&M 2 Uber/Mu... HifiMan HE400i & Antlion ModMic 4.0 
  hide details  
Reply
SuperMegaPwnsauce
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 4770k Asus Z87-PRO MSI GTX 1080 Gaming X Gskill Ripjaws X 19200 16GB 
Hard DriveCoolingOSMonitor
Samsung 850 EVO 500GB SSD BeQuiet! Dark Rock Pro 3 Windows 10 Home 64Bit  Dell S2716DG 2K 144hz G-Sync 
KeyboardPowerCaseMouse
Logitech G910 Orion Spectrum Seasonic Flagship PRIME TITANIUM 650W Fractal Design Define R5 W/ 3 Phanteks PH-F140S... Logitech G Pro 
Mouse PadAudioAudio
PC Gaming Master Race Glorious XXXL Pad & Razer... Creative Sound Blaster Z & Schiit M&M 2 Uber/Mu... HifiMan HE400i & Antlion ModMic 4.0 
  hide details  
Reply
post #9 of 14
Quote:
Originally Posted by killeraxemannic View Post
Yepp same model only
Not exactly. They have to have to be the same gpu core.
post #10 of 14
Actually it comes down to a simple thing.... Nvidia or amd saying the chipset can. Afaik as long as a motherboard has two pcie slots it can support sli or crossfire, keep in mind though sli can't run with a card at 4x it has to either be 8x 8x 16x 16x or a combination of the two.
Maxi
(11 items)
 
  
Reply
Maxi
(11 items)
 
  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Memory
Overclock.net › Forums › Components › Memory › What makes a mobo SLI or CFX capable