Overclock.net › Forums › Graphics Cards › Graphics Cards - General › Crossfire Motherboard Question
New Posts  All Forums:Forum Nav:

Crossfire Motherboard Question

post #1 of 3
Thread Starter 
Sorta of an odd forum to post this in, but there is no generic motherboard forum and I havent settled on which cpu/chipset I'm going to use yet.

Heres the question:

I have two 3870x2's that I want to quadfire in a budget gaming build. Budget being key, I'm looking to do this as cheaply as possible. My question is- how important would it be to get something that supports atleast 8x/8x? Obviously 16x/4x motherboards are cheaper- would 4x be a much larger limitation for the dual gpu 3870x2 than a single gpu?

Oh yeah, I don't need to hear about how awful 3870x2 quadfire scaling is I got them both fairly cheap. smile.gif
Spit in God's Eye
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7-5960x @ 4.26 ghz core / 3.53 ghz uncore - 1.... AsRock X99 Extreme3 EVGA GTX980 Ti 16gb (4x4gb) Crucial DDR4 2133 CL15  
Hard DriveHard DriveHard DriveOptical Drive
A-Data SP600 256gb SSD (C:) Samsung 840 EVO 1TB SSD (D:) Seagate 2TB Hybrid Drive (E:) LITE-ON 24x DVDRW 
CoolingOSMonitorKeyboard
Corsair H110 Win 10 x64 HP 2511x ( 25" 1080p ) AZIO L70 
PowerCaseMouseAudio
Corsair TX750 Antec 300 (Modded) Logitech M100 Onboard 
  hide details  
Reply
Spit in God's Eye
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7-5960x @ 4.26 ghz core / 3.53 ghz uncore - 1.... AsRock X99 Extreme3 EVGA GTX980 Ti 16gb (4x4gb) Crucial DDR4 2133 CL15  
Hard DriveHard DriveHard DriveOptical Drive
A-Data SP600 256gb SSD (C:) Samsung 840 EVO 1TB SSD (D:) Seagate 2TB Hybrid Drive (E:) LITE-ON 24x DVDRW 
CoolingOSMonitorKeyboard
Corsair H110 Win 10 x64 HP 2511x ( 25" 1080p ) AZIO L70 
PowerCaseMouseAudio
Corsair TX750 Antec 300 (Modded) Logitech M100 Onboard 
  hide details  
Reply
post #2 of 3
You will not notice any real difference between 4x/8x.
I have tried my self with many different high end gpu's.

Also I think it was techpowerup that have done a lot of testing with just that, and you will only loose a couple of fps from it.

So no worries on 16x/4x smile.gif
The up/downgrade
(14 items)
 
  
CPUMotherboardGraphicsRAM
|Intel 6800K @ 4ghz 1.24v| |Asus ROG Strix X99| |Gainward GTX 1070 @ ~2ghz| |4x4gb Corsair XMS 3000mhz CL14| 
Hard DriveOSMonitorKeyboard
|840 Pro 256gb| |OCZ Vertex 2 120gb| |WD Red 2tb| |Windows 10 Pro x64| |27" QNIX QX2710 @ 2560x1440 120hz| |Logitech G810 Orion Spectrum RGB| 
PowerCaseMouseAudio
|EVGA SuperNOVA 1000 G2| |Corsair 750D| |Logitech G502 Proteus Spectrum RGB|  |JBL L890 speakers| 
AudioAudio
|Emotiva XDA-2 receiver| |2x Advanced Acoustic MAA-705 @ 200w 8ohm| 
  hide details  
Reply
The up/downgrade
(14 items)
 
  
CPUMotherboardGraphicsRAM
|Intel 6800K @ 4ghz 1.24v| |Asus ROG Strix X99| |Gainward GTX 1070 @ ~2ghz| |4x4gb Corsair XMS 3000mhz CL14| 
Hard DriveOSMonitorKeyboard
|840 Pro 256gb| |OCZ Vertex 2 120gb| |WD Red 2tb| |Windows 10 Pro x64| |27" QNIX QX2710 @ 2560x1440 120hz| |Logitech G810 Orion Spectrum RGB| 
PowerCaseMouseAudio
|EVGA SuperNOVA 1000 G2| |Corsair 750D| |Logitech G502 Proteus Spectrum RGB|  |JBL L890 speakers| 
AudioAudio
|Emotiva XDA-2 receiver| |2x Advanced Acoustic MAA-705 @ 200w 8ohm| 
  hide details  
Reply
post #3 of 3
Quote:
Originally Posted by go4life;12991022 
You will not notice any real difference between 4x/8x.
I have tried my self with many different high end gpu's.

Also I think it was techpowerup that have done a lot of testing with just that, and you will only loose a couple of fps from it.

So no worries on 16x/4x smile.gif

Agreed. There is only a 2-3% difference in the PCI-E lanes that you have specified. If you want to go cheap, just make sure that the board supports Crossfire, which most do.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Graphics Cards - General
Overclock.net › Forums › Graphics Cards › Graphics Cards - General › Crossfire Motherboard Question