What is the best Video Card (GPU)?

Well, today's best video card is Nvidia Geforce GTX 680 and ATI Radeon HD 7970. They are almost as fast as the other but do you really need those too much horsepower?

*Nvidia Geforce Logo and ATI Radeon Graphics

Latest GPU are capable of DirectX 11 feature, basic requirement for Windows 7 to run all latest games at  the best eye candy. The drawbacks are the price and requires 500Watts or more power supply to run it.

Before you decide which GPU (Graphics Processing Unit), consider your budget, where are you going to use this, and compatibility. Not to forget also the faster the GPU the more heat it produce, so you must have a good cooling ambiance. 

Here are your options:

$100 Category (Good 1680x1050 performance in most games)

Radeon HD 6670 DDR3
Codename:	Turks
Process:	40 nm
Universal Shaders:	480
Texture Units:	24
ROPs:	8
Memory Bus:	128-bit
Core Speed MHz:	800
Memory Speed MHz:	800 (1600 effective)
DirectX/Shader Model:	DX 11/SM 5.0
Max TDP:	66 W

GeForce GT 440 GDDR5
Codename:	GF108
Process:	40 nm
Universal Shaders:	96
Texture Units:	16
ROPs:	4
Memory Bus:	128-bit
Core/Shader Speed MHz:	810 / 1620
Memory Speed MHz:	800 (3200 effective)
DirectX/Shader Model:	DX 11/SM 4.0
Max TDP:	65 W

Radeon HD 7750
Codename:	Cape Verde
Process:	28 nm
Universal Shaders:	512
Texture Units:	32
ROPs:	16
Memory Bus:	128-bit
Core Speed MHz:	800
Memory Speed MHz:	1125 (4500 effective)
DirectX/Shader Model:	DX 11.1/SM 5.0
Max TDP:	55 W

$150-270 Great 1920x1200 performance in most games

Radeon HD 6870
Codename:	RV970 "Barts"
Process:	40 nm
Universal Shaders:	1120
Texture Units:	56
ROPs:	32
Memory Bus:	256-bit
Core Speed MHz:	900
Memory Speed MHz:	1050 (4200 effective)
DirectX/Shader Model:	DX 11/SM 5.0
Max TDP:	151 W

GeForce GTX 560
Codename:	GF114
Process:	40 nm
Universal Shaders:	336
Texture Units:	56
ROPs:	32
Memory Bus:	256-bit
Core/Shader Speed MHz:	810 / 1620
Memory Speed MHz:	1002 (4008 effective)
DirectX/Shader Model:	DX 11/SM 5
Max TDP:	160 W

GeForce GTX 560 Ti
Codename:	GF114
Process:	40 nm
Universal Shaders:	384
Texture Units:	64
ROPs:	32
Memory Bus:	256-bit
Core/Shader Speed MHz:	822 / 1644
Memory Speed MHz:	1002 (4008 effective)
DirectX/Shader Model:	DX 11/SM 5
Max TDP:	170 W

Radeon HD 7850
Codename:	Pitcairn
Process:	28 nm
Universal Shaders:	1024
Texture Units:	64
ROPs:	32
Memory Bus:	256-bit
Core Speed MHz:	860
Memory Speed MHz:	1200 (4800 effective)
DirectX/Shader Model:	DX 11.1/SM 5
Max TDP:	130 W

$300 and up Great 2560x1600 performance

GeForce GTX 670
Codename:	GK104
Process:	28 nm
Universal Shaders:	1344
Texture Units:	112
ROPs:	32
Memory Bus:	256-bit
Core Speed MHz:	915
Memory Speed MHz:	1502 (6006 effective)
DirectX/Shader Model:	DX 11/SM 5
Max TDP:	170 W

GeForce GTX 680
Codename:	GK104
Process:	28 nm
Universal Shaders:	1536
Texture Units:	128
ROPs:	32
Memory Bus:	256-bit
Core Speed MHz:	1006
Memory Speed MHz:	1502 (6006 effective)
DirectX/Shader Model:	DX 11/SM 5
Max TDP:	195 W

or ATI 7970 GHz Edition

	Radeon HD 7970 GHz Edition	Radeon HD 7970	GeForce GTX 680
Stream processors	2048	2048	1536
Texture Units	128	128	128
Full Color ROPs	32	32	32
Graphics Clock	1000 MHz Base / 1050 MHz Boost	925 MHz	1006 MHz
Texture Fillrate	134.4 Gtex/s	118.4 Gtex/s	128.8 Gtex/s
Memory Clock	1500 MHz	1375 MHz	1502 MHz
Memory Bus	384-bit	384-bit	256-bit
Memory Bandwidth	288 GB/s	264 GB/s	192.3 GB/s
Graphics RAM	3 GB GDDR5	3 GB GDDR5	2 GB GDDR5
Die Size	365 mm2	365 mm2	294 mm2
Transistors (Billion)	4.31	4.31	3.54
Process Technology	28 nm	28 nm	28 nm
Power Connectors	1 x 8-pin, 1 x 6-pin	1 x 8-pin, 1 x 6-pin	2 x 6-pin

You see here they are resolution dependent performance, now if you plan on bigger monitor at bigger resolution you must have enough power to display them. Now take your pick. =)