I'm thinking about picking up a 60" 4K HDTV strictly for PC gaming. Does anyone have any experience with 4K gaming on a PC and is it a noticeable difference between 1080p and 4K? I plan to sit about 6 feet away while gaming. Also would I have to run 2 GPU's in SLI to achieve a decent 4K gaming experience? Would it be beneficial at all to go with 4K with a TV of that size or should I just purchase another 1080p HDTV.

Even if I do purchase the 60" 4K and only go as high as 1440p resolution tops, would it be worth it? Would I actually notice a difference?

Any advice would be appreciated. Thanks!

My current setup...

CASE:*NZXT*Phantom*PHAN-001WT*Red Steel / Plastic Enthusiast*ATX*Full Tower Computer Case
CPU: Intel i5 4690K*3.5GHz
CPU Cooler: Cooler Master Hyper 212 EVO
GPU: MSI*GTX 970*
MOBO: MSI Z97 Gaming 5
MEMORY:*G.SKILL*Ripjaws*X Series*8GB DDR3
SSD:*Intel 535 240GB SATA III (OS/Programs)
SSD 2:*Intel 520*120GB SATA III (Games)
HDD 1:*Western Digital 2TB*7200 RPM (Media)
HDD 2:*Western Digital 1TB*7200 RPM (Games)
HDD 3:*Western Digital 500GB*7200 RPM (BackUp)
OPTICAL DRIVE:*SONY Black*Blu-ray Burner 12X
PSU:*Antec*High Current Gamer Series 900W
DISPLAY: Panasonic 50"*Plasma 1080p HDTV
NETWORK ADAPTER: TP-LINK Dual Band N900
FANS:*140MM*(x1),*120MM*(x3),*200MM*(x2)
KEYBOARD:*Logitech*G13 & Logitech Bluetooth*Illuminated*Keyboard K810
MOUSE: Razer Naga Epic Chroma
HEADSET: Logitech*G930
OS: Windows 10 (64 bit)

Depends on the 4k TV (some sets may not support 4:4:4/60Hz/ or upscale 1080p content well, etc.), but if you're a competitive gamer playing mostly twitch shooters there's going to be some form of input lag you may not be happy with. I've been using a new Sammy 55" 4k that replaced a Sony 46" 1080p TV and unless I'm sitting about 5ft from the 55" I cannot make out major differences in detail from the two (so at 1440p, it may not look any better or even worse without proper scaling). I'm also running a single Titan X which has run everything on here just fine (Dying Light, Witcher 3, Mad Max, etc.) but not without some settings ticked down. So yea, that single 970 will struggle unless you SLI (and even then that VRAM could hold you back).
 
 
IMO, stay where you're at for a bit longer if you can (if you must purchase a TV for this reason) until 4k gets cheaper/better features and you can upgrade that card for something better down the road. Another 1080p TV at this point (unless your current is broken), just as 4k is becoming the "next thing" doesn't make sense. Of course, it always helps if you haven't done so already, to just take a trip to your local Best Buy and check out these TVs in person.   

El-Dubya
Depends on the 4k TV (some sets may not support 4:4:4/60Hz/ or upscale 1080p content well, etc.), but if you're a competitive gamer playing mostly twitch shooters there's going to be some form of input lag you may not be happy with. I've been using a new Sammy 55" 4k that replaced a Sony 46" 1080p TV and unless I'm sitting about 5ft from the 55" I cannot make out major differences in detail from the two (so at 1440p, it may not look any better or even worse without proper scaling). I'm also running a single Titan X which has run everything on here just fine (Dying Light, Witcher 3, Mad Max, etc.) but not without some settings ticked down. So yea, that single 970 will struggle unless you SLI (and even then that VRAM could hold you back).
 
 
IMO, stay where you're at for a bit longer if you can (if you must purchase a TV for this reason) until 4k gets cheaper/better features and you can upgrade that card for something better down the road. Another 1080p TV at this point (unless your current is broken), just as 4k is becoming the "next thing" doesn't make sense. Of course, it always helps if you haven't done so already, to just take a trip to your local Best Buy and check out these TVs in person.   

Thank you for your input. My current 50" Panasonic works wonderful. I just deem it too small as I sit 6 feet away when I PC game. I play a lot of MMO's which usually have small text associated with the games UI so a 60"-65" HDTV would suit me even better. Plus I just love huge screens! ;-)

If you got your monitor to actually display 144fps on your 144hz monitor, then you are going to notice a huge difference when you are only getting maximum of 60fps on your 4k tv. Keep in mind, that most triple-A games will not run at 60 frames per second even with a single Titan X, you will probably be hovering in the 35 - 50 frames per second realm depending on what settings you have turned on. If all you want is a 30 frames per second 4k experience then pretty much any 4k TV will work. 
 
After dropping a load of money on a 4k setup, I can give you my advice:
 
Look into running a factory overclocked 980 which you can get for a decent price. Get yourself a decently fast 144hz 1440p monitor and wait for the 1000-series(Pascal) from NVIDIA that launches next year. Right now 4k is possible, but it requires too much effort. If you try to go 4k with a single 970, you are going to be very disappointed. Before I upgraded to the Titan X Superclocked, I had a dual 970 SLI setup and it was barely able to handle 4k gaming.