Perhaps StarDock will reply to your post but here is the Hardware Requirements from the Game Website

https://www.ashesofthesingularity.com/game/faq

These are the absolute MINIMUM System Requirements for the Alpha

Absolute Minimum:

• 64-bit Windows 7 / 8 / 10 OS
• Quad Core CPU
• 8 GB Memory
• 2 GB DirectX 11 Video Card
• 1600x900 Display Resolution
• High-speed Internet Connection

We Recommend:

• 64-bit Windows 7 / 8 / 10 OS
• i7 (or equivalent) CPU
• 16 GB Memory
• Nvidia GTX 970 or AMD R9 390 equivalent Video Card
• 1920x1080 Display Resolution
• High-speed Internet Connection

For final release, we expect to be able to bring the video card memory requirement down to 1 GB but otherwise, the rest will remain the same.

http://www.videocardbenchmark.net/gpu.php?gpu=GeForce+GTX+580

From this benchmark test your score of 4989 is quite abit lower than the 6727 score for the recommended AMD R9 290 Video Card

I would say you can run the Game at 1920x1024 but will have problems running the Game at higher resolutions and with highest level of textures and shadows.

So it depends how much you want to push the game.  Eventually you probably going to want to replace your Graphics Card.

The Intel I7-980X is listed as 6 cores with 12 thread capability - multi-core does seem to help the game as much as the GPU so you probably be fine but just not at the highest frame rate or highest resolutions and textures.

Currently it asks for 2 GB of Video memory - I am not sure your graphics card has that - the last note says they will try to reduce the memory requirement to 1 GB.  Which might also limit your ability to display textures at your chosen video resolution.

Note with my I5-4690K running at 3.9 Mhz (4 core non-multi threaded CPU) running 16 Gigabytes RAM 1600 CL8 using a 4 GB AMD R9 290X GPU I get 17-24 Frames per second at 1920x1024 resolution at the highest texture and shadows setting running MSAA 8x.  Visually the Game looks great (of course still only in alpha) but my hardware is hardly pushing out the frame rate.  If you seen any of the 4K Video Benchmark tests for the game - the game can handle much higher end hardware both from GPU and CPU perspective.  I am looking forward to getting a 4K monitor to try it out.

I can generally beat the Easy AI but have yet to win against even the NORMAL AI - I usually try to expand too much and get overrun by its superior ability to expand and produce units.

Hopefully BRAD or Oxide Games will respond for sure to your post.

Here is a You Tube Video of the Game Benchmark running on a I7-860 plus 7950 (recursor to AMD R9 290) GPU

https://www.youtube.com/watch?v=xAUSha37MEQ

I agree about the videocard. Upgrade to 2GB minimum video memory. 3GB better, 4-6GB best especially if you're looking to up the resolution of your display. Sweet little processor you have there. A little cooling with decent motherboard and memory and you should be able to cross 4Ghz easily.

I don't know if you looked into the appropriate benchmark thread on the forum here. But my i7-920 OC'd to 3.6 on an x58 motherboard with a 980SC GPU ran 38+FPS. Everyone gets their own numbers. But the move to the 900 series is a good one. OR(!) wait to see what's coming in a few months to supersede the 900 series GPUs from Nvidia!

I understand completely. And GPUs seem to be better buys as the tech matures. I agree the Pascal won't be that much of a leap. But by the time the "Ti" version of it comes out it should be jaw-dropping amazing. The 900 series isn't that huge of a bump over the 700 series until you get to the 980Ti. But if someone's running the 600 series, the 900s have always made good sense.

Good luck and keep scraping together those pennies!

I think that is a major advantage because with a single gpu you do not get the downsides associated with multi-gpu setups. Think about frametime inconsistency associated with Alternate Frame Rendering, SLI related bugs and reduced power usage/heat.

ps

Pascal is rumored to be a significant step up, at least according to Nvidia (they did not lie for Maxwell and Fermi): http://cdn.wccftech.com/wp-content/uploads/2015/03/Screenshot-91.png. However it is also rumored to need NVlink which will require a new motherboard (and thus DDR4 and a new cpu). So not sure if I would recommend waiting for that if you need the extra power now. But that is your call!

I dont mind dual chip cards, cause the point for me is not to play games with them, its about to get as much power for doing archviz renders into my case. I have shitty layout of my mobo and in combination with my case i cant have 2 cards in SLI other than close together - which i tried once and it was terrible, noisy as hell. So the only multi-gpu setup for me is dual-chip card. Raytracing with rendering softs like Octane, Arion, Iray etc...btw does not use SLI or crossfire, even though it can use all the available GPUs connected to the motherboard, so those issues related to them are of no consequence to me. I never used both gpus on the 590 while gaming anyway.

I would be honestly surprised if Pascal cards required new mobo or DDR4, because of some NVlink, that would be shooting yourself into their own leg IMO. 

I dont really need that extra power now, i can technically wait until Pascal. It would be a downer that it is somehow superawesome improvement over Maxwell, with me buying 980Ti just few months before. Especially if it was much improved in computing...Some preliminary tests or performance expectations would be nice to know at this point or at least soon to help me decide.

@Kazzerigian

GTX990 would be great! Even if it was 2xGM204 chips, rather than GM210 - 2x2048 cuda cores would still raytrace faster than 2816 cores of 980Ti... if it was for about the price of 980Ti, maybe slightly more, i would seriously consider it. Even if for Ashes would be the single GPU better choice. Not gonna happen though sadly, there will be at best dual chip titan with 2 big maxwells, in order to beat fury x2 to get the crown of the fastest graphics card, and it will be 1500 at least, if not 3000 like Titan Z.

The GPU must be DX12 compatible, yes. I know my GTX670 is as I've run the benchmark with it. Win10's only a requirement if you want to run DX12. Sorry to hear about your long-time great GPU and good luck! I'd double-check warranties and cooling on any replacements I considered.