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2-way or 3-way Crossfire 7950s

post #1 of 4
Thread Starter 
Hello everyone!

This is officially my first post to the overclock.net community after a year of lurking around.thumbsupsmiley.png

I'm currently building my first water-cooled PC and I have already purchased 2 HIS 7950 IceQ X². I'm trying to decide whether or not its worth picking up a third and running 3-way crossfire. I will mainly be gaming, but also 3D rendering in Solid Works, and using Photoshop.
I searched the forum, and I read an article here, http://www.guru3d.com/articles_pages/radeon_hd_7950_crossfire_review_2_and_3_way,1.html

It suggests no more than 2 crossfire gpus, but the article is dated and I was hoping to get input from someone who has used the setup or has some input on the matter.
Thanks in advance!
post #2 of 4
Welcome to OCN!

2 is plenty for anything, 3 way crossfire doesn't work well. Also, that's a nice 7950 model, good choice biggrin.gif


Out of curiosity, what else will be part of your rig?
Bruce
(20 items)
 
  
CPUMotherboardGraphicsRAM
4670k Asus Z87 Pro HIS 7950 IceQ X2 2x2gb + 2x4gb DDR3 1333 
Hard DriveHard DriveHard DriveOptical Drive
Seagate 1TB 7200RPM OCZ Agility 4 128GB PNY 240GB LG Blu Ray Burner 
CoolingOSMonitorKeyboard
Hyper 212+ with extra fan Windows 10 Education x64 Shimian QH270 @110hz Medieval Dell OEM Keyboard 
PowerCaseMouseAudio
Corsair TX750 V1 Antec 300 Black Illusion  Logitech G400s Xonar ST 
AudioOtherOtherOther
Fostex T50rp with BMF mod Archer T9E Wifi adapter 2x Yate Loon D12SL-12D 120x38mm fans Thermalright TY-143 fan 
  hide details  
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Bruce
(20 items)
 
  
CPUMotherboardGraphicsRAM
4670k Asus Z87 Pro HIS 7950 IceQ X2 2x2gb + 2x4gb DDR3 1333 
Hard DriveHard DriveHard DriveOptical Drive
Seagate 1TB 7200RPM OCZ Agility 4 128GB PNY 240GB LG Blu Ray Burner 
CoolingOSMonitorKeyboard
Hyper 212+ with extra fan Windows 10 Education x64 Shimian QH270 @110hz Medieval Dell OEM Keyboard 
PowerCaseMouseAudio
Corsair TX750 V1 Antec 300 Black Illusion  Logitech G400s Xonar ST 
AudioOtherOtherOther
Fostex T50rp with BMF mod Archer T9E Wifi adapter 2x Yate Loon D12SL-12D 120x38mm fans Thermalright TY-143 fan 
  hide details  
Reply
post #3 of 4
Thread Starter 
Thanks!

I'm glad you asked, I'm so excited! Corsair 900D, Asus Rampage IV Extreme, 32 GB Kingston HyperX Beast RAM, 3820 i7 (I plan to upgrade the cpu later), Heatkiller Waterblocks all around, Corsair ax1200i psu (might not be necessary now that I'll probably go 2way xfire), a SSD and two 3tb HDD in raid, LG bluray burner, and Creative ZXR. I have still have some odds and ends to pick up.

I have been slowly collecting parts for months, and I'm finally nearly complete! I'll be starting a build log when I have everything biggrin.gif
post #4 of 4
10-15% more performance with a third card, personally -- I wouldn't do it.

Solidworks and Photoshop will show no performance gains at all, the AMD consumer cards won't accelerate either one appreciably.

Greg
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