Overclock.net › Forums › Graphics Cards › AMD/ATI › 2 more 6970 or 1 6990?
New Posts  All Forums:Forum Nav:

2 more 6970 or 1 6990?

post #1 of 2
Thread Starter 
What will perform better 3 physical cards in Trifire or 2 physical card with 3 GPU? What I worry about is that 3 cards will take up 3 PCI-E lanes (which is no problem) but the Link Width will be at 8X 8X 8X? Vs 2 physical cards (6970 + 6990) occupies 2 PCI-E lanes for 16x x16?
     
CPUMotherboardGraphicsRAM
i7 980X 3003B475* @ 4449.1MHz 1.45V (6C-12T) ASUS Rampage III Extreme - 1208 BIOS CrossFire Asus EAH6970 945MHz/1450MHz 1180 mV* 6GB Corsair Dominator GT 2009MHz / 7-8-7-20 T1 C7* 
Hard DriveOSMonitorKeyboard
RAID 0* OCZ Vertex 3 120GBX2 (OS)+ 4X 2TB WD Green Windows 7 Ultimate 64Bit 30" NEC MultiSync PA301W Filco Majestouch-2 Cherry MX Red 
PowerCaseMouseMouse Pad
Corsair AX1200 1200W 80 Plus Gold 100% Modular Corsair Obsidian 800D Razor Mamba 4G Steelseries SX 
Audio
Bowers & Wilkins PM1 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-2620M Apple Intel® HD Graphics 3000 Corsair Memory 8GB DDR3 1333MHz 
Hard DriveOptical DriveOS
Western Digital Scorpio Blue (WD10JPVT) 1TB SuperDrive OSX Lion 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
i7 980X 3003B475* @ 4449.1MHz 1.45V (6C-12T) ASUS Rampage III Extreme - 1208 BIOS CrossFire Asus EAH6970 945MHz/1450MHz 1180 mV* 6GB Corsair Dominator GT 2009MHz / 7-8-7-20 T1 C7* 
Hard DriveOSMonitorKeyboard
RAID 0* OCZ Vertex 3 120GBX2 (OS)+ 4X 2TB WD Green Windows 7 Ultimate 64Bit 30" NEC MultiSync PA301W Filco Majestouch-2 Cherry MX Red 
PowerCaseMouseMouse Pad
Corsair AX1200 1200W 80 Plus Gold 100% Modular Corsair Obsidian 800D Razor Mamba 4G Steelseries SX 
Audio
Bowers & Wilkins PM1 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-2620M Apple Intel® HD Graphics 3000 Corsair Memory 8GB DDR3 1333MHz 
Hard DriveOptical DriveOS
Western Digital Scorpio Blue (WD10JPVT) 1TB SuperDrive OSX Lion 
  hide details  
Reply
post #2 of 2
The link width is no problem. Many have proven that there is very minimal performance differentiation between 16x and 8x. The only difference I see is cooling. The 6990 and 9670 combo should be cooler due to more space to breath, though it is about 100 dollars more expensive ( on the egg that is ). If you are willing to pay, get the 6990x6970 combo.

Also a single 6990 (OC'd to 6970 speeds) or 6970x2 build can max out basically any game out there now. This is a little overkill.....
    
CPUMotherboardGraphicsRAM
AMD R7 1700 @3.9GHz MSI X370 Titanium Asus GTX 1080ti Strix OC Corsair Dominator Platinum 16GB @2667MHz 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro M.2 Samsung 840 Sata Some other standard hard drives Corsair H110i GT 
OSMonitorKeyboardPower
Windows 10 Asus PG279Q 165Hz IPS GSync Corsair K70 Lux Quickfire FSP Hydro G 850w 
CaseMouseMouse Pad
Phanteks Enthoo Pro Razer Deatfhadder Elite Corsair Gaming somethingorother 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
AMD R7 1700 @3.9GHz MSI X370 Titanium Asus GTX 1080ti Strix OC Corsair Dominator Platinum 16GB @2667MHz 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro M.2 Samsung 840 Sata Some other standard hard drives Corsair H110i GT 
OSMonitorKeyboardPower
Windows 10 Asus PG279Q 165Hz IPS GSync Corsair K70 Lux Quickfire FSP Hydro G 850w 
CaseMouseMouse Pad
Phanteks Enthoo Pro Razer Deatfhadder Elite Corsair Gaming somethingorother 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › 2 more 6970 or 1 6990?