Upgrading for 7680x1440 CF 390x, CF Fury X or SLI 980ti

yabadaba2177

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Sep 13, 2011
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OK so yes this is a near copy and paste of my last thread but at that time it was decided best to wait until AMD launched their new cards. Well now that they are out I'm looking for some input cause I'm dying to fire up all three of my 1440 monitors =)

As the title says I'm looking to do a GPU upgrade. Preferably within the next month. Plan to run 7860 x 1440 for gaming. Will be a mix of games (Bioshock,Swtor,GW2,Dragon Age,Skyrim etc...) but upgrading mainly for Project Cars, iRacing, Star Citizen and Fallout 4

Not looking to run ultra on everything but would like to shoot toward high with a little AA but as close to 60fps as possible. Though 40s is more likely I'm guessing

Current Rig : (nearly 3 years old)
i5 3570K 3.4GHZ
MSI Z77A-G45
16 GB Mushkin Enhanced Blackline Frostbyte PC3-12800 8GB 2X4GB DDR3-1600 9-9-9-24
XFX 850W PRO850W XXX Edition Single Rail ATX 12V 70A 80PLUS Silver
MSI R7850 Twin Frozr 2GD5/OC Radeon HD 7850 2GB

Monitors: Main Auria IPS 2560x1440 (DP), sides TopSync IPS 2560x1440 (DVI-D) and an aux 1680x1050 (currently powered off the on board graphics just for web browsing)

Looking to buy 2 cards and CF or SLI willing and able to upgrade PSU if needed. Would like to keep the budget under $1500 for the cards alone.

I am planning to do a full new build in 2 - 2.5 years

390x - has my eye as it's the lowest cost option and I won't need active DP adapters to run my current monitors. Plus I'm already running AMD and won't have to deal with changing drivers

Fury X - I've been really impressed with the benchmark numbers I've seen at 4k but share the concerns that even given the speed of HBM 4gb just might not be enough down the road. Also I'll need the active DP adapters so that adds to the cost. Lastly I'm not sure how well I can fit two radiators into my case.

980ti - I just recently started looking at Nvidia again, price point is right with the Fury X and I think I could add a cheap third card for PhysX to my board. The benchmark numbers are impressive as well. Unsure if I need active adapters for Nvidia surround.

Hopefully my CPU won't be a terrible bottle neck.

Just looking for thoughts and opinions or if anyone is running a similar setup.

Thanks in advance
 
Solution
I would suggest Fury X CF: crossfire seems to scale far better than SLI http://www.hardware.fr/focus/111/crossfire-radeon-r9-fury-x-fiji-vs-gm200-round-2.html
https://www.youtube.com/watch?v=rUY32Mq4dlY
or if you can settle with not maxing out everything they are really good for the amount of money. https://www.youtube.com/watch?v=K-qRwJn_RdA-
if we would talk about a single card the 980Ti might be the best, but Cf just seems to scale better.

yabadaba2177

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How do you think that would compare to the CF 390x given the cost difference and the 390x being 8gb. I know the 980ti is faster so it'll most likely win but by how much for the addition $450-500. Assuming I'll need an active DP adapter as well. Wonder what if any problem i would run into running one monitor on DP one DVI and one DP adapter to DVI...
 

Nathanael Freihart

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I would suggest Fury X CF: crossfire seems to scale far better than SLI http://www.hardware.fr/focus/111/crossfire-radeon-r9-fury-x-fiji-vs-gm200-round-2.html
https://www.youtube.com/watch?v=rUY32Mq4dlY
or if you can settle with not maxing out everything they are really good for the amount of money. https://www.youtube.com/watch?v=K-qRwJn_RdA-
if we would talk about a single card the 980Ti might be the best, but Cf just seems to scale better.
 
Solution

Nathanael Freihart

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And it also doesnt have Consrtvative Rasteraization and Raster Order Views,

But in the other hand it has Full resource binding, Full Typed UAV Formats and Asyncton Shaders.
Furthermore it scales better in CF than the 980Ti does in SLI.

(BTW: 12.1 is only some aditional effects and fancy stuff no "real" DX-generation by any means, the conservativ rasters are more impressive.)

 

Nathanael Freihart

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I have to say that this isnt the case, most Multi-GPUS hav eto mirror the VRAM, so they are using 8GB together, or "a double as powerfull GPU would use 8GB ".
 

leeb2013

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each card has 8GB, meaning 8GB Vram for crossfire. Dual 390x can't drive that resolution at high settings/frame rates and the heat/power usage is crazy.
 

Nathanael Freihart

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It can
http://www.tweaktown.com/tweakipedia/91/amd-radeon-r9-390x-crossfire-4k/index.html
and btw i thought i explained the VRAM-mirroring already,and it shouldbe able to use all 8gb crossfire.