AMD Radeon HD 8670M vs NVIDIA GeForce GT 640M Mac

AMD Radeon HD 8670M
NVIDIA GeForce GT 640M Mac
384 Shaders
1GB DDR3
825MHz
384 Shaders
512MB GDDR5
625MHz
Peak AI Performance
630 GFLOPS
FP32
Peak AI Performance
0.48 TOPS
INT32
FP32
630 GFLOPS
FP32
480 GFLOPS
Form Factor
Soldered
Form Factor
Soldered
TDP
25W
TDP
32W

Peak AI Performance

  • 31% faster vs GeForce GT 640M Mac
  • 24% slower vs Radeon HD 8670M
Radeon HD 8670M - 630 GFLOPS FP32
x1.31
GeForce GT 640M Mac - 0.48 TOPS INT32
x1

FP32

  • 31% faster vs GeForce GT 640M Mac
  • 24% slower vs Radeon HD 8670M
Radeon HD 8670M - 630 GFLOPS FP32
x1.31
GeForce GT 640M Mac - 480 GFLOPS FP32
x1
  • 78% slower vs GeForce GT 640M Mac
  • 4.44x faster vs Radeon HD 8670M
Radeon HD 8670M - 14.4GB/s
x1
GeForce GT 640M Mac - 64GB/s
x4.44
  • 22% lower vs GeForce GT 640M Mac
  • 28% higher vs Radeon HD 8670M
Radeon HD 8670M - 25W
x1
GeForce GT 640M Mac - 32W
x1.28
GB6 OpenCL N/A
0%
Manufacturer
AMD
Manufacturer
NVIDIA
Chip Designer
AMD
Chip Designer
NVIDIA
Architecture
GCN 1
Architecture
Kepler
Family
Radeon HD 8000
Family
GeForce 600
Codename
Oland
-
Variant
Mars XT
Codename
NVE7
GK107
Variant
N13P-GS
Market Segment
Laptop
Market Segment
Laptop
Release Date
1/8/2013
Release Date
3/22/2012
Foundry
TSMC
Foundry
TSMC
Fabrication Node
28nm
Fabrication Node
28nm
Die Size
90 mm²
Die Size
118 mm²
Transistor Count
1 Billion
Transistor Count
1.3 Billion
Transistor Density
11.56M/mm²
Transistor Density
10.76M/mm²
Form
Soldered
Form
Soldered
Shading Units
384 Shaders
Shading Units
384 Shaders
Texture Mapping Units
24 TMUs
Texture Mapping Units
32 TMUs
Render Output Units
8 ROPs
Render Output Units
16 ROPs
-
-
Streaming Multiprocessors
2 SMs
Compute Units
6 CUs
-
-
775MHz Base
825MHz
-
625MHz
Peak AI Performance
630 GFLOPS
FP32
Peak AI Performance
0.48 TOPS
INT32
FP32
630 GFLOPS
FP32
480 GFLOPS
FP64
40 GFLOPS
FP64
20 GFLOPS
-
-
INT32
0.48 TOPS
Pixel Fillrate
6.6 GPixel/s
Pixel Fillrate
10 GPixel/s
Texture Fillrate
19.8 GTexel/s
Texture Fillrate
20 GTexel/s
L1
-
-
16KB/CU
L1
48KB/SM Tex
16KB/SM
-
L2
256KB Shared
L2
256KB Shared
1GB
DDR3
512MB
GDDR5
Bus Width
64Bit
Bus Width
128Bit
Clock
900MHz
Transfer Rate
1.8GT/s
Bandwidth
14.4GB/s
Clock
1000MHz
Transfer Rate
4GT/s
Bandwidth
64GB/s
TDP
25W
TDP
32W
Max Resolution
4096x2160
Max Resolution
4096x2304
Max Resolution Refresh Rate
60Hz
Max Resolution Refresh Rate
60Hz
Variable Refresh Rate
-
-
Variable Refresh Rate
G-Sync
FreeSync
Display Stream Compression (DSC)
Not Supported
Display Stream Compression (DSC)
Not Supported
Multi Monitor Support
3
Multi Monitor Support
3
Model
VCE 1.0
Model
NVENC 1
Codec
AVC (H.264)
Codec
AVC (H.264)
Model
UVD 4.0
Model
NVDEC 1
Codec
MPEG-1
MPEG-2
MPEG-4
VC-1
AVC (H.264)
Codec
MPEG-1
MPEG-2
MPEG-4
VC-1
AVC (H.264)
Direct X
12
Direct 3D
11_1
Direct X
12
Direct 3D
11_0
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
OpenGL
4.6
OpenCL
3.0
Vulkan
1.2
Shader Model
6.5
-
-
GFX
6
-
-
-
-
Shader Model
6.5
CUDA
3.0
-
-
PureVideo HD
VP5
VDPAU
Feature Set D
Not a Card
Not a Card
PCIe Version
3.0
PCIe Lanes
8
PCIe Version
3.0
PCIe Lanes
16
Change Comparison