Thanks for the advise sir and upon checking all 4 HDMI ports on my TV supports 4K@6oHz/DVI IN.The HDMI IN 3 port is especially suitable for UHD Video (4:4:4,4:2:2). If it helps, my tv is LG UB850T series.
I checked the specs of your UHDTV and yes, it does have HDMI 2.0 which is capable of 4K@60Hz and is HDCP 2.2 compliant.
Can you recommend a decent HTPC setup for my TV with 20 - 30k budget. Usage would be more on playing HD movies and light gaming. But it would be a plus if it can handle games like Diablo 3, Battlefield 4, GTAV, etc.
I suggest you delay your HTPC build for a few more weeks ~ months and wait a bit longer for more Skylake motherboards and processors to arrive. You would want to get those Mini-ITX motherboards with HDMI 2.0 ports and probably a Skylake Core i3 or Core i5 which has better built-in graphics support for 4K.
If you need to build an HTPC now here is an OK suggestion for Php 30K:
CPU: Intel Core i5-4460 = 8,540.00
MOB: ASRock B85M-ITX = 4,230.00
RAM: G.Skill AEGIS 2x4GB DDR3-1600 CL11 = 2,520.00
HDD: Western Digital Caviar Blue 1TB = 2,480.00
VGA: ZOTAC Geforce GTX 960 (ZT-90310-10M) = 8,740.00
PSU: Corsair VS450 450W PSU = 1,730.00
ATX: Sharkoon QB One Mini-ITX = 1,830.00
TOTAL = 30,070.00
The build should be able to play Diablo III at the native 4K resolution as long as you tone down some of the graphics settings to maintain a 35 ~ 40 fps framerate. Sorry but Battlefield 4 and GTA V are just too graphics intensive at 4K. The only way you can play them decently is to use a lower resolution like 1920x1080 then have it upscaled to 4K on your TV :-)
Take note that the only
videocards available now with HDMI 2.0 support is GTX 960 and GTX 950. So you might have to wait for next-gen GPUs if you want a videocard that has native HDMI 2.0 support. Also if you have plans of getting an Ultra HD BluRay drive in the future or subscribe to Netflix 4K then you might need to make sure the HDMI ports on your HTPC are HDCP 2.2 compliant. Again only GTX 960 and GTX 950 have HDCP 2.2 compliant HDMI outputs :-)