NVIDIA GeForce GT 640 GK208 vs AMD Radeon HD 8670
NVIDIA GeForce GT 640 GK208
AMD Radeon HD 8670
|
384 Shaders
1GB GDDR5
1046MHz
|
384 Shaders
2GB GDDR5
1000MHz
|
|
Peak AI Performance
0.8 TOPS
INT32
|
Peak AI Performance
770 GFLOPS
FP32
|
|
FP32
800 GFLOPS
|
FP32
770 GFLOPS
|
|
Form Factor
PCIe Card
1.5-Slots
|
Form Factor
PCIe Card
1.0-Slots
|
|
TDP
49W
|
TDP
86W
|
Peak AI Performance
|
|
GeForce GT 640 GK208 - 0.8 TOPS INT32
x1.04
Radeon HD 8670 - 770 GFLOPS FP32
x1
FP32
|
|
GeForce GT 640 GK208 - 800 GFLOPS FP32
x1.04
Radeon HD 8670 - 770 GFLOPS FP32
x1
|
|
GeForce GT 640 GK208 - 40.1GB/s
x1
Radeon HD 8670 - 73.6GB/s
x1.84
|
|
GeForce GT 640 GK208 - 49W
x1
Radeon HD 8670 - 86W
x1.76
|
0%
|
0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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Manufacturer
NVIDIA
|
Manufacturer
AMD
|
|
Chip Designer
NVIDIA
|
Chip Designer
AMD
|
|
Architecture
Kepler 2
|
Architecture
GCN 1
|
|
Family
GeForce 600
|
Family
Radeon HD 8000
|
|
Codename
NV108
GK208
Variant
GK208-400-A1
|
Codename
Oland
-
Variant
Oland XT
|
|
Market Segment
Desktop
|
Market Segment
Desktop
|
|
Release Date
5/29/2013
|
Release Date
1/8/2013
|
|
Foundry
TSMC
|
Foundry
TSMC
|
|
Fabrication Node
28nm
|
Fabrication Node
28nm
|
|
Die Size
79 mm²
|
Die Size
77 mm²
|
|
Transistor Count
1 Billion
|
Transistor Count
950 Million
|
|
Transistor Density
12.91M/mm²
|
Transistor Density
12.34M/mm²
|
|
Form
PCIe Card
|
Form
PCIe Card
|
|
Shading Units
384 Shaders
|
Shading Units
384 Shaders
|
|
Texture Mapping Units
16 TMUs
|
Texture Mapping Units
24 TMUs
|
|
Render Output Units
8 ROPs
|
Render Output Units
8 ROPs
|
|
Streaming Multiprocessors
2 SMs
|
-
-
|
|
-
-
|
Compute Units
6 CUs
|
|
1046MHz
|
1000MHz
|
|
Peak AI Performance
0.8 TOPS
INT32
|
Peak AI Performance
770 GFLOPS
FP32
|
|
FP32
800 GFLOPS
|
FP32
770 GFLOPS
|
|
FP64
30 GFLOPS
|
FP64
50 GFLOPS
|
|
INT32
0.8 TOPS
|
-
-
|
|
Pixel Fillrate
8.368 GPixel/s
|
Pixel Fillrate
8 GPixel/s
|
|
Texture Fillrate
16.736 GTexel/s
|
Texture Fillrate
24 GTexel/s
|
|
L1
48KB/SM Tex
16KB/SM
-
|
L1
-
-
16KB/CU
|
|
L2
256KB Shared
|
L2
256KB Shared
|
|
1GB
GDDR5
|
2GB
GDDR5
|
|
Bus Width
64Bit
|
Bus Width
128Bit
|
|
Clock
1252MHz
Transfer Rate
5GT/s
Bandwidth
40.1GB/s
|
Clock
1150MHz
Transfer Rate
4.6GT/s
Bandwidth
73.6GB/s
|
|
TDP
49W
|
TDP
86W
|
|
1x VGA
1x DVI-I Dual-Link
-
1x HDMI 1.4
|
-
1x DVI-I Dual-Link
1x DisplayPort 1.2
1x HDMI 1.4
|
|
Max Resolution
4096x2304
|
Max Resolution
4096x2160
|
|
Max Resolution Refresh Rate
30Hz
|
Max Resolution Refresh Rate
60Hz
|
|
Variable Refresh Rate
G-Sync
FreeSync
|
Variable Refresh Rate
-
-
|
|
Display Stream Compression (DSC)
Not Supported
|
Display Stream Compression (DSC)
Not Supported
|
|
Multi Monitor Support
2
|
Multi Monitor Support
3
|
|
No Encoders
-
|
Model
VCE 1.0
|
|
-
-
|
Codec
AVC (H.264)
|
|
Model
NVDEC 1
|
Model
UVD 4.0
|
|
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_0
|
Direct X
12
Direct 3D
11_1
|
|
OpenGL
4.6
OpenCL
3.0
Vulkan
1.2
|
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
|
|
Shader Model
6.5
CUDA
3.5
-
-
PureVideo HD
VP5
VDPAU
Feature Set D
|
Shader Model
6.5
-
-
GFX
6
-
-
-
-
|
|
1x Fan
|
1x Fan
|
|
Slots Required
1.5
PCIe Version
2.0
PCIe Lanes
8
|
Slots Required
1.0
PCIe Version
3.0
PCIe Lanes
8
|
|
-
-
-
-
|
Multi GPU Support
Supported
Type
2-way CrossFireX
|
|
Height
111 mm (4.37 in)
Width
145 mm (5.71 in)
Depth
30 mm (1.18 in)
|
-
-
-
-
-
-
|
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