Does Intel DH55TC Motherboard Support Ati Radeon hd 6850?

yes that motherboard support hd 6850 the hd 6850 requires one pcie x16 slot + 1 6 pin pcie connector your motherboard have pcie 2.0 x 16 slot so it will support that card and when you will buy one good psu you will get 1 x6pin pcie connector which is also required. 

Yes your motherboard support HD 6850. Buy a decent brand PSU.

for psu get this one its an nice psu with good built. 

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Thanks Guys For Your info

you are welcome. have a nice day. 

Hey guys i saw that on my motherboard the PCI slot is very near to my ram slots and the clips of ram slot comes in contact with my graphic card at 6''in on my card (i.e)HD 4350
Here is the image of my motherboard. I am still confused and dont think i would fit on my MB.
http://www.google.com/imgres?imgurl=http://www.legitrev...

It will be fit. Dont worry. Maybe you cant use black SATA port, for it may covered with 6850. Even any long card will fit, depending on your case size.

How about support for HD 6870 ? With power supply upgraded to 600W ...

6870 is a good card but try to get gtx560ti if you can. 560 is nearly HD6950. But 560ti cost more than 6870.

How about just GTX 560 (non TI), that one is at same price as 6870. And on youtube I saw lot of videos with my PC configuration with GTX 560. So now I am confused on which one will be more suitable 560/6870 ?

They are similar in performance. Few difference in frame. So look for the performance/price card. 6870 is better than gtx560(non ti) as is cheaper than 560.