You really don't want to use a TV as a computer monitor. I've found these response time charts for your screen:
1080p @ 60Hz : 44.5 ms
1080p With Interpolation : 58.3 ms
1080p @ 60Hz Outside Game Mode : 65.6 ms
1080p @ 60Hz @ 4:4:4 : 44.5 ms
(Anything above 10ms ruins gaming and 50ms+ even gets annoying for normal use)
Also it doesn't actually support 120 hz. (TVs are full of marketing crap)
If you're already using it, don't mind the input delay, and want to stay with it. Then the 1060/480/970 will all be more than powerful enough for current games and the ones of the near future.
Otherwise, if you want to switch to a better screen and need more performance. You can combine GPUs using:
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Crossfire: AMD only, can combine different AMD GPUs
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SLI: Nvidia only, only same GPU model can be combined, 1060 not supported
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DX12 Explicit Multiadapter: Supports different GPUs of different manufacturers, even Intel
Each of those require direct support by the games you play, so check beforehand what games you're looking to play and what they support. All of these are generally hard to set-up and I definitely do not recommend relying on it for performance, get a single card if you can.
For gaming, the memory bandwidth (192 bit, 256 bit, ...) doesn't make any difference to performance and neither does the card's vram. Get a 4GB card and buy some extra system ram/SSD with the money.
quote: Firepluk I'd also say you could buy a cheaper lower freq. RAM without losing much and instead invest this extra money in slightly better GPU/CPU |
That as well, just like for the vram, the ram's bandwidth is not gonna improve performance.