AMD Radeon HD 7660D IGP vs NVIDIA GeForce GT 645M

Comparative analysis of AMD Radeon HD 7660D IGP and NVIDIA GeForce GT 645M 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).

AMD Radeon HD 7660D IGP

NVIDIA GeForce GT 645M

Differences

Reasons to consider the AMD Radeon HD 7660D IGP

Around 13% better floating-point performance: 614.4 gflops vs 544.5 gflops

Floating-point performance	614.4 gflops vs 544.5 gflops

Reasons to consider the NVIDIA GeForce GT 645M

Around 18% higher texture fill rate: 22.7 billion / sec vs 19.2 GTexel / s
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 28 nm vs 32 nm
3.1x lower typical power consumption: 32 Watt vs 100 Watt

Texture fill rate	22.7 billion / sec vs 19.2 GTexel / s
Manufacturing process technology	28 nm vs 32 nm
Thermal Design Power (TDP)	32 Watt vs 100 Watt

Compare benchmarks

GPU 1: AMD Radeon HD 7660D IGP
GPU 2: NVIDIA GeForce GT 645M

Name	AMD Radeon HD 7660D IGP	NVIDIA GeForce GT 645M
PassMark - G3D Mark		933
PassMark - G2D Mark		159
Geekbench - OpenCL		2642
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		8.493
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		285.42
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.863
CompuBench 1.5 Desktop - Video Composition (Frames/s)		17.242
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		19.116
GFXBench 4.0 - Car Chase Offscreen (Frames)		1913
GFXBench 4.0 - Manhattan (Frames)		3670
GFXBench 4.0 - T-Rex (Frames)		3341
GFXBench 4.0 - Car Chase Offscreen (Fps)		1913
GFXBench 4.0 - Manhattan (Fps)		3670
GFXBench 4.0 - T-Rex (Fps)		3341

Compare specifications (specs)

	AMD Radeon HD 7660D IGP	NVIDIA GeForce GT 645M
Essentials
Architecture	TeraScale 3	Kepler
Code name	Devastator	GK107
Launch date	2 October 2012	1 October 2012
Launch price (MSRP)	$122
Place in performance rating	not rated	1215
Type	Desktop	Laptop
Technical info
Core clock speed	800 MHz
Floating-point performance	614.4 gflops	544.5 gflops
Manufacturing process technology	32 nm	28 nm
Pipelines	384	384
Texture fill rate	19.2 GTexel / s	22.7 billion / sec
Thermal Design Power (TDP)	100 Watt	32 Watt
Transistor count	1,303 million	1,270 million
CUDA cores		384
Video outputs and ports
Display Connectors	No outputs	No outputs
HDCP
HDMI
Maximum VGA resolution		Up to 2048x1536
Compatibility, dimensions and requirements
Interface	IGP	PCIe 3.0 x16
Bus support		PCI Express 2.0, PCI Express 3.0
Laptop size		medium sized
API support
DirectX	11.2 (11_0)	12 API
OpenGL	4.4	4.5
OpenCL		1.1
Memory
Memory type	System Shared	DDR3\GDDR5
Maximum RAM amount		2 GB
Memory bus width		128bit
Memory clock speed		1800 MHz
Shared memory		0
Technologies
3D Blu-Ray
3D Vision
CUDA
DirectCompute
DirectX 11		DirectX 11
Optimus