AMD Radeon HD 8670M vs NVIDIA GeForce GT 640

Comparative analysis of AMD Radeon HD 8670M and NVIDIA GeForce GT 640 videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory. 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.

 

Differences

Reasons to consider the AMD Radeon HD 8670M

  • Videocard is newer: launch date 8 month(s) later
  • Around 1% higher memory clock speed: 1800 MHz vs 1782 MHz
  • Around 65% better performance in PassMark - G2D Mark: 488 vs 295
  • Around 47% better performance in Geekbench - OpenCL: 5532 vs 3766
  • Around 20% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.952 vs 0.792
  • Around 20% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 17.551 vs 14.637
  • 3.4x better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 71.696 vs 20.86
Specifications (specs)
Launch date 1 March 2013 vs 5 June 2012
Memory clock speed 1800 MHz vs 1782 MHz
Benchmarks
PassMark - G2D Mark 488 vs 295
Geekbench - OpenCL 5532 vs 3766
CompuBench 1.5 Desktop - T-Rex (Frames/s) 0.952 vs 0.792
CompuBench 1.5 Desktop - Video Composition (Frames/s) 17.551 vs 14.637
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 71.696 vs 20.86

Reasons to consider the NVIDIA GeForce GT 640

  • Around 16% higher core clock speed: 902 MHz vs 775 MHz
  • Around 46% higher texture fill rate: 28.86 GTexel / s vs 19.8 GTexel / s
  • Around 9% better floating-point performance: 692.7 gflops vs 633.6 gflops
  • 2.3x better performance in PassMark - G3D Mark: 1173 vs 520
  • Around 63% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 11.448 vs 7.005
  • Around 43% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 206.777 vs 144.131
  • 2.1x better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 2134 vs 1039
  • Around 33% better performance in GFXBench 4.0 - Manhattan (Frames): 2375 vs 1783
  • Around 47% better performance in GFXBench 4.0 - T-Rex (Frames): 3328 vs 2270
  • 2.1x better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 2134 vs 1039
  • Around 33% better performance in GFXBench 4.0 - Manhattan (Fps): 2375 vs 1783
  • Around 47% better performance in GFXBench 4.0 - T-Rex (Fps): 3328 vs 2270
Specifications (specs)
Core clock speed 902 MHz vs 775 MHz
Texture fill rate 28.86 GTexel / s vs 19.8 GTexel / s
Floating-point performance 692.7 gflops vs 633.6 gflops
Benchmarks
PassMark - G3D Mark 1173 vs 520
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 11.448 vs 7.005
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 206.777 vs 144.131
GFXBench 4.0 - Car Chase Offscreen (Frames) 2134 vs 1039
GFXBench 4.0 - Manhattan (Frames) 2375 vs 1783
GFXBench 4.0 - T-Rex (Frames) 3328 vs 2270
GFXBench 4.0 - Car Chase Offscreen (Fps) 2134 vs 1039
GFXBench 4.0 - Manhattan (Fps) 2375 vs 1783
GFXBench 4.0 - T-Rex (Fps) 3328 vs 2270

Compare benchmarks

GPU 1: AMD Radeon HD 8670M
GPU 2: NVIDIA GeForce GT 640

PassMark - G3D Mark
GPU 1
GPU 2
520
1173
PassMark - G2D Mark
GPU 1
GPU 2
488
295
Geekbench - OpenCL
GPU 1
GPU 2
5532
3766
CompuBench 1.5 Desktop - Face Detection (mPixels/s)
GPU 1
GPU 2
7.005
11.448
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)
GPU 1
GPU 2
144.131
206.777
CompuBench 1.5 Desktop - T-Rex (Frames/s)
GPU 1
GPU 2
0.952
0.792
CompuBench 1.5 Desktop - Video Composition (Frames/s)
GPU 1
GPU 2
17.551
14.637
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)
GPU 1
GPU 2
71.696
20.86
GFXBench 4.0 - Car Chase Offscreen (Frames)
GPU 1
GPU 2
1039
2134
GFXBench 4.0 - Manhattan (Frames)
GPU 1
GPU 2
1783
2375
GFXBench 4.0 - T-Rex (Frames)
GPU 1
GPU 2
2270
3328
GFXBench 4.0 - Car Chase Offscreen (Fps)
GPU 1
GPU 2
1039
2134
GFXBench 4.0 - Manhattan (Fps)
GPU 1
GPU 2
1783
2375
GFXBench 4.0 - T-Rex (Fps)
GPU 1
GPU 2
2270
3328
Name AMD Radeon HD 8670M NVIDIA GeForce GT 640
PassMark - G3D Mark 520 1173
PassMark - G2D Mark 488 295
Geekbench - OpenCL 5532 3766
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 7.005 11.448
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 144.131 206.777
CompuBench 1.5 Desktop - T-Rex (Frames/s) 0.952 0.792
CompuBench 1.5 Desktop - Video Composition (Frames/s) 17.551 14.637
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 71.696 20.86
GFXBench 4.0 - Car Chase Offscreen (Frames) 1039 2134
GFXBench 4.0 - Manhattan (Frames) 1783 2375
GFXBench 4.0 - T-Rex (Frames) 2270 3328
GFXBench 4.0 - Car Chase Offscreen (Fps) 1039 2134
GFXBench 4.0 - Manhattan (Fps) 1783 2375
GFXBench 4.0 - T-Rex (Fps) 2270 3328
3DMark Fire Strike - Graphics Score 1565

Compare specifications (specs)

AMD Radeon HD 8670M NVIDIA GeForce GT 640

Essentials

Architecture GCN 1.0 Kepler
Code name Mars GK107
Design AMD Radeon HD 8000M Series
Launch date 1 March 2013 5 June 2012
Place in performance rating 1177 1178
Type Desktop Desktop
Launch price (MSRP) $99
Price now $59.99
Value for money (0-100) 25.25

Technical info

Boost clock speed 775 MHz
Compute units 6
Core clock speed 775 MHz 902 MHz
Floating-point performance 633.6 gflops 692.7 gflops
Manufacturing process technology 28 nm 28 nm
Pipelines 384 384
Texture fill rate 19.8 GTexel / s 28.86 GTexel / s
Transistor count 1,040 million 1,270 million
Thermal Design Power (TDP) 65 Watt

Video outputs and ports

Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort

Compatibility, dimensions and requirements

Interface PCIe 3.0 x8 PCIe 3.0 x16
Laptop size medium sized
Length 145 mm
Supplementary power connectors None

API support

DirectX 11 12.0 (11_0)
OpenGL 4.4 4.6

Memory

Maximum RAM amount 2 GB 2 GB
Memory bandwidth 14.4 GB / s 28.51 GB / s
Memory bus width 64 Bit 128 Bit
Memory clock speed 1800 MHz 1782 MHz
Memory type DDR3 DDR3
Shared memory 0