NVIDIA GeForce GT 650M SLI vs NVIDIA GeForce GTX 660M

Comparative analysis of NVIDIA GeForce GT 650M SLI and NVIDIA GeForce GTX 660M videocards for all known characteristics in the following categories: Essentials, Technical info, Compatibility, dimensions and requirements, API support, Memory, Video outputs and ports, 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 GT 650M SLI

NVIDIA GeForce GTX 660M

Differences

Reasons to consider the NVIDIA GeForce GT 650M SLI

2x more pipelines: 768 vs 384
4x more maximum memory size: 2x2 GB vs 1 GB
2x more memory clock speed: 4000 MHz vs 2000 MHz

Pipelines	768 vs 384
Maximum memory size	2x2 GB vs 1 GB
Memory clock speed	4000 MHz vs 2000 MHz

Reasons to consider the NVIDIA GeForce GTX 660M

Around 6% higher core clock speed: 835 MHz vs 790 MHz
Around 14% higher boost clock speed: 950 MHz vs 835 MHz

Core clock speed	835 MHz vs 790 MHz
Boost clock speed	950 MHz vs 835 MHz

Compare benchmarks

GPU 1: NVIDIA GeForce GT 650M SLI
GPU 2: NVIDIA GeForce GTX 660M

Name	NVIDIA GeForce GT 650M SLI	NVIDIA GeForce GTX 660M
PassMark - G3D Mark		1447
PassMark - G2D Mark		265
Geekbench - OpenCL		4028
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		10.837
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		405.086
CompuBench 1.5 Desktop - T-Rex (Frames/s)		1.098
CompuBench 1.5 Desktop - Video Composition (Frames/s)		21.798
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		33.754
GFXBench 4.0 - Car Chase Offscreen (Frames)		1094
GFXBench 4.0 - Manhattan (Frames)		2253
GFXBench 4.0 - T-Rex (Frames)		3176
GFXBench 4.0 - Car Chase Offscreen (Fps)		1094
GFXBench 4.0 - Manhattan (Fps)		2253
GFXBench 4.0 - T-Rex (Fps)		3176
3DMark Fire Strike - Graphics Score		475

Compare specifications (specs)

	NVIDIA GeForce GT 650M SLI	NVIDIA GeForce GTX 660M
Essentials
Architecture	Kepler	Kepler
Code name	N13E-GE	GK107
Launch date	22 March 2012	22 March 2012
Place in performance rating	not rated	1277
Type	Laptop	Laptop
Technical info
Boost clock speed	835 MHz	950 MHz
Core clock speed	790 MHz	835 MHz
Manufacturing process technology	28 nm	28 nm
Pipelines	768	384
CUDA cores		384
Floating-point performance		729.6 gflops
Texture fill rate		30.4 billion / sec
Thermal Design Power (TDP)		50 Watt
Transistor count		1,270 million
Compatibility, dimensions and requirements
Laptop size	medium sized	large
Bus support		PCI Express 2.0, PCI Express 3.0
Interface		MXM-B (3.0)
SLI options		2-way
API support
DirectX	11	12 API
OpenCL		1.1
OpenGL		4.5
Memory
Maximum RAM amount	2x2 GB	1 GB
Memory bus width	2x 128 Bit	128bit
Memory clock speed	4000 MHz	2000 MHz
Memory type	GDDR5	GDDR5
Shared memory	0	0
Memory bandwidth		64.0 GB / s
Video outputs and ports
Display Connectors		No outputs
HDCP
HDMI
Maximum VGA resolution		Up to 2048x1536
Technologies
3D Vision
3D Vision / 3DTV Play
Adaptive VSync
CUDA
DirectX 11		DirectX 11
FXAA
SLI
TXAA