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Trifire with 2x5850 and 5870

post #1 of 11
Thread Starter 
I currently have two 5850 and planned of adding a 5870 to the system

Is it possible to trifire those cards or its useless? can't find an answer by googgling

In crossfire, Im at 16x/16x

In tri Fire, i'll be x8/x8/x8
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post #2 of 11
It's possible to tri-fire 3 of them, and the 5870 will run @ 5850's speed tho.
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post #3 of 11
Save yourself a few dollars and just get another 5850, the 5870 will be forced to run at 5850 speeds anyways.
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post #4 of 11
Quote:
Originally Posted by Ocnewb View Post
It's possible to tri-fire 3 of them, and the 5870 will run @ 5850's speed tho.
Quote:
Originally Posted by Red Shift View Post
Save yourself a few dollars and just get another 5850, the 5870 will be forced to run at 5850 speeds anyways.
Catalyst doesn't force clocks anymore.
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post #5 of 11
You can do it!
post #6 of 11
Just go with a 5850 and save the money. Regardless of what speeds they convert too, the performance diff between the 5870 and 5850 once trifired in your care, will be miniscule. Price diff, not so much. Ive seen used 5850s for low 100$'s.... Cant beat that
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post #7 of 11
Tsk tsk, add a 5970 for quadfire is the obvious answer here
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post #8 of 11
You can crossfire the 5870 with your 5850s no problem. You should be at 16x 8x 8x for trifire. 8x will not be any problem for a 5850 or any single gpu video card out.

I have a hard time believing you aren't maxing all your games with two 5850s on that monitor you have, but hey this is overkill.net isn't it? LoL

A 5970 isn't so obvious when they go for $400 atleast still to this day. I sold mine about a month ago for $500 and I see them going for $600 and up on ebay.
    
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post #9 of 11
Thread Starter 
Thanks guys for all of your answers, by the way my screen has changed and I now have a 42" LG TV 240hz

I think I'll go with the 5870 but feel free to tell me if I'm wrong, I'll put the 5870 in the first slot so its gonna run at x16
Quad Damage
(24 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 4930k @ 4.6Ghz Asus Rampage IV Extreme (Koolance Full WB) 2 x GTX 1080ti FE in SLI (EK WATERBLOCK) Corsair Dominator GT 2133 MHz (16GB) 
Hard DriveHard DriveHard DriveHard Drive
3 TB Seagate OCZ Vertex 4 256GB Crucial M4 128GB ADATA SX900 128GB 
CoolingCoolingCoolingCooling
RIVE Koolance Waterblock (VRM and PCH) Feser X-Changer 360 Feser X-Changer 240 Feser X-Changer 480 
CoolingCoolingCoolingOS
WaterCool MoRA3 Pro with Gentle Typhoon 3 x MCP 655 pumps (With EK top...all serial) 2 x EK FC 1080ti Blocks Windows 7 Ultimate x64 
MonitorMonitorKeyboardPower
Asus ROG Swift PG348Q (3440x1440 @100hz) CrossOver 27Q Led-P Logitech G15 EVGA SuperNova 1600T2 (Titanium) 
CaseMouseMouse PadAudio
Corsair Obsidian Heavily Modded Logitech G700 RocketFish Speed/Control M-audio AV-40 (Logitech G-35) 
  hide details  
Reply
Quad Damage
(24 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 4930k @ 4.6Ghz Asus Rampage IV Extreme (Koolance Full WB) 2 x GTX 1080ti FE in SLI (EK WATERBLOCK) Corsair Dominator GT 2133 MHz (16GB) 
Hard DriveHard DriveHard DriveHard Drive
3 TB Seagate OCZ Vertex 4 256GB Crucial M4 128GB ADATA SX900 128GB 
CoolingCoolingCoolingCooling
RIVE Koolance Waterblock (VRM and PCH) Feser X-Changer 360 Feser X-Changer 240 Feser X-Changer 480 
CoolingCoolingCoolingOS
WaterCool MoRA3 Pro with Gentle Typhoon 3 x MCP 655 pumps (With EK top...all serial) 2 x EK FC 1080ti Blocks Windows 7 Ultimate x64 
MonitorMonitorKeyboardPower
Asus ROG Swift PG348Q (3440x1440 @100hz) CrossOver 27Q Led-P Logitech G15 EVGA SuperNova 1600T2 (Titanium) 
CaseMouseMouse PadAudio
Corsair Obsidian Heavily Modded Logitech G700 RocketFish Speed/Control M-audio AV-40 (Logitech G-35) 
  hide details  
Reply
post #10 of 11
You could always just flash the 5870 BIOS to the 5850. Pick up a third 5850 and do the same thing. It will be like having three 5870's.
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