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).

 

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 932
PassMark - G2D Mark 161
Geekbench - OpenCL 2659
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 1214
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

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