AMD Radeon 660M vs NVIDIA GeForce GT 640M

Comparative analysis of AMD Radeon 660M and NVIDIA GeForce GT 640M videocards for all known characteristics in the following categories: Essentials, Technical info, Compatibility, dimensions and requirements, API support, Video outputs and ports, Memory, Technologies. Benchmark videocards performance analysis: Geekbench - OpenCL, PassMark - G3D Mark, PassMark - G2D Mark, 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 660M

NVIDIA GeForce GT 640M

Differences

Reasons to consider the AMD Radeon 660M

Videocard is newer: launch date 9 year(s) 9 month(s) later
2.9x more boost clock speed: 1900 MHz vs 645 MHz
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 6 nm vs 28 nm
2.1x lower typical power consumption: 15 Watt vs 32 Watt
4.2x better performance in Geekbench - OpenCL: 13432 vs 3186

Specifications (specs)
Launch date	4 Jan 2022 vs 22 March 2012
Boost clock speed	1900 MHz vs 645 MHz
Manufacturing process technology	6 nm vs 28 nm
Thermal Design Power (TDP)	15 Watt vs 32 Watt
Benchmarks
Geekbench - OpenCL	13432 vs 3186

Compare benchmarks

GPU 1: AMD Radeon 660M
GPU 2: NVIDIA GeForce GT 640M

Geekbench - OpenCL

GPU 1

GPU 2

13432

3186

Name	AMD Radeon 660M	NVIDIA GeForce GT 640M
Geekbench - OpenCL	13432	3186
PassMark - G3D Mark		931
PassMark - G2D Mark		204
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		7.861
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		275.972
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.727
CompuBench 1.5 Desktop - Video Composition (Frames/s)		15.445
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		17.381
GFXBench 4.0 - Car Chase Offscreen (Frames)		1476
GFXBench 4.0 - Manhattan (Frames)		1963
GFXBench 4.0 - T-Rex (Frames)		2580
GFXBench 4.0 - Car Chase Offscreen (Fps)		1476
GFXBench 4.0 - Manhattan (Fps)		1963
GFXBench 4.0 - T-Rex (Fps)		2580

Compare specifications (specs)

	AMD Radeon 660M	NVIDIA GeForce GT 640M
Essentials
Architecture	RDNA 2.0	Kepler
Code name	Rembrandt	GK107
Launch date	4 Jan 2022	22 March 2012
Place in performance rating	1349	1352
Type		Laptop
Technical info
Boost clock speed	1900 MHz	645 MHz
Compute units	6
Core clock speed	1500 MHz
Manufacturing process technology	6 nm	28 nm
Peak Double Precision (FP64) Performance	91.20 GFLOPS (1:16)
Peak Half Precision (FP16) Performance	2.918 TFLOPS (2:1)
Peak Single Precision (FP32) Performance	1459 GFLOPS
Pipelines	384	384
Pixel fill rate	30.40 GPixel/s
Texture fill rate	45.60 GTexel/s
Thermal Design Power (TDP)	15 Watt	32 Watt
Transistor count	13100 million	1,270 million
CUDA cores		384
Floating-point performance		480.0 gflops
Compatibility, dimensions and requirements
Form factor	IGP
Interface	PCIe 4.0 x8	PCIe 3.0 x16
Bus support		PCI Express 2.0, PCI Express 3.0
Laptop size		medium sized
API support
DirectX	12.2	12 API
OpenCL	2.0	1.1
OpenGL	4.6	4.5
Shader Model	6.7
Vulkan
Video outputs and ports
Display Connectors		No outputs
HDCP
HDMI
Maximum VGA resolution		Up to 2048x1536
Memory
Maximum RAM amount		2 GB
Memory bus width		128bit
Memory clock speed		1800 MHz
Memory type		DDR3\GDDR5
Shared memory		0
Technologies
3D Blu-Ray
3D Vision
CUDA
DirectCompute
DirectX 11		DirectX 11
Optimus