NVIDIA GeForce GTX 660 Ti vs AMD Radeon HD 6850 X2

Comparative analysis of NVIDIA GeForce GTX 660 Ti and AMD Radeon HD 6850 X2 videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps), 3DMark Fire Strike - Graphics Score.

NVIDIA GeForce GTX 660 Ti

AMD Radeon HD 6850 X2

Differences

Reasons to consider the NVIDIA GeForce GTX 660 Ti

Videocard is newer: launch date 10 month(s) later
Around 14% higher core clock speed: 915 MHz vs 800 MHz
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 28 nm vs 40 nm
Around 69% lower typical power consumption: 150 Watt vs 254 Watt
Around 74% better performance in PassMark - G3D Mark: 4412 vs 2534
Around 25% better performance in PassMark - G2D Mark: 466 vs 373
3.9x better performance in Geekbench - OpenCL: 15349 vs 3977
3.8x better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 3.037 vs 0.789

Specifications (specs)
Launch date	16 August 2012 vs 19 September 2011
Core clock speed	915 MHz vs 800 MHz
Manufacturing process technology	28 nm vs 40 nm
Thermal Design Power (TDP)	150 Watt vs 254 Watt
Benchmarks
PassMark - G3D Mark	4412 vs 2534
PassMark - G2D Mark	466 vs 373
Geekbench - OpenCL	15349 vs 3977
CompuBench 1.5 Desktop - T-Rex (Frames/s)	3.037 vs 0.789

Reasons to consider the AMD Radeon HD 6850 X2

2.3x more texture fill rate: 2x 38.4 GTexel / s billion / sec vs 102.5 billion / sec
Around 43% higher pipelines: 2x 960 vs 1344
Around 25% better floating-point performance: 2x 1,536.0 gflops vs 2,459.5 gflops
2x more maximum memory size: 2x 2 GB vs 2 GB
700x more memory clock speed: 4200 MHz vs 6.0 GB/s

Texture fill rate	2x 38.4 GTexel / s billion / sec vs 102.5 billion / sec
Pipelines	2x 960 vs 1344
Floating-point performance	2x 1,536.0 gflops vs 2,459.5 gflops
Maximum memory size	2x 2 GB vs 2 GB
Memory clock speed	4200 MHz vs 6.0 GB/s

Compare benchmarks

GPU 1: NVIDIA GeForce GTX 660 Ti
GPU 2: AMD Radeon HD 6850 X2

PassMark - G3D Mark

GPU 1

GPU 2

4412

2534

PassMark - G2D Mark

GPU 1

GPU 2

466

373

Geekbench - OpenCL

GPU 1

GPU 2

15349

3977

CompuBench 1.5 Desktop - T-Rex (Frames/s)

GPU 1

GPU 2

3.037

0.789

Name	NVIDIA GeForce GTX 660 Ti	AMD Radeon HD 6850 X2
PassMark - G3D Mark	4412	2534
PassMark - G2D Mark	466	373
Geekbench - OpenCL	15349	3977
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	36.256
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	1029.267
CompuBench 1.5 Desktop - T-Rex (Frames/s)	3.037	0.789
CompuBench 1.5 Desktop - Video Composition (Frames/s)	45.894
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	82.191
GFXBench 4.0 - Car Chase Offscreen (Frames)	3285
GFXBench 4.0 - Manhattan (Frames)	3684
GFXBench 4.0 - T-Rex (Frames)	3337
GFXBench 4.0 - Car Chase Offscreen (Fps)	3285
GFXBench 4.0 - Manhattan (Fps)	3684
GFXBench 4.0 - T-Rex (Fps)	3337
3DMark Fire Strike - Graphics Score	1615

Compare specifications (specs)

	NVIDIA GeForce GTX 660 Ti	AMD Radeon HD 6850 X2
Essentials
Architecture	Kepler	TeraScale 2
Code name	GK104	Barts
Launch date	16 August 2012	19 September 2011
Launch price (MSRP)	$299
Place in performance rating	726	727
Price now	$321.99
Type	Desktop	Desktop
Value for money (0-100)	17.34
Technical info
Boost clock speed	980 MHz
Core clock speed	915 MHz	800 MHz
CUDA cores	1344
Floating-point performance	2,459.5 gflops	2x 1,536.0 gflops
Manufacturing process technology	28 nm	40 nm
Pipelines	1344	2x 960
Texture fill rate	102.5 billion / sec	2x 38.4 GTexel / s billion / sec
Thermal Design Power (TDP)	150 Watt	254 Watt
Transistor count	3,540 million	1,700 million
Video outputs and ports
Audio input for HDMI	Internal
Display Connectors	2x DVI, 1x HDMI, 1x DisplayPort, One Dual Link DVI-I, One Dual Link DVI-D, One HDMI...	2x DVI, 1x HDMI, 1x DisplayPort
G-SYNC support
HDCP
HDMI
Maximum VGA resolution	2048x1536
Multi monitor support
Compatibility, dimensions and requirements
Bus support	PCI Express 3.0
Height	4.376" (11.1 cm)
Interface	PCIe 3.0 x16	PCIe 2.0 x16
Length	9.5" (24.1 cm)
SLI options	3-way
Supplementary power connectors	Two 6-pin	2x 8-pin
API support
DirectX	12.0 (11_0)	11.2 (11_0)
OpenGL	4.3	4.4
Memory
Maximum RAM amount	2 GB	2x 2 GB
Memory bandwidth	144.2 GB / s	2x 134.4 GB / s
Memory bus width	192-bit GDDR5	2x 256 Bit
Memory clock speed	6.0 GB/s	4200 MHz
Memory type	GDDR5	GDDR5
Shared memory	0
Technologies
3D Blu-Ray
3D Gaming
3D Vision
Adaptive VSync
CUDA
FXAA
GPU Boost
SLI
TXAA