Tesla K40X vs Tesla K80

Tesla K40X
Tesla K80
2880 Shaders
12GB GDDR5
875MHz
2x 2496 Shaders
2x 12GB GDDR5
875MHz
FP32
5.04 TFLOPS
FP32
8.74 TFLOPS
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Form Factor
PCIe Card
2.0-Slots
Form Factor
PCIe Card
2.0-Slots
TDP
235W
TDP
300W
Power Connectors
1x 6-Pin
1x 8-Pin
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Power Connectors
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1x 8-Pin
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GB5 OpenCL - N/A
0%
GB5 OpenCL - N/A
0%
GB5 CUDA - N/A
0%
GB5 CUDA - N/A
0%
GB5 Metal - N/A
0%
GB5 Metal - N/A
0%
GB5 Vulkan - N/A
0%
GB5 Vulkan - N/A
0%
OCT 2020.1 - N/A
0%
OCT 2020.1 - N/A
0%
OCT Metal - N/A
0%
OCT Metal - N/A
0%
Manufacturer
NVIDIA
Manufacturer
NVIDIA
Chip Designer
NVIDIA
Chip Designer
NVIDIA
Architecture
Kepler
Architecture
Kepler 2
Family
Tesla K
Family
Tesla K
Codename
NVF0
GK180
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Codename
NV100
GK210
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Market Segment
Server
Market Segment
Server
Release Date
11/22/2013
Release Date
11/17/2014
Foundry
TSMC
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Foundry
TSMC
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Fabrication Node
28nm
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Fabrication Node
28nm
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Die Size
561 mm²
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Die Size
2x 561 mm²
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Transistor Count
7.1 Billion
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Transistor Count
2x 7.1 Billion
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Transistor Density
12.62M/mm²
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Transistor Density
12.62M/mm²
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Form
PCIe Card
Form
PCIe Card
Shading Units
2880 Shaders
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Shading Units
2x 2496 Shaders
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Texture Mapping Units
240 TMUs
Texture Mapping Units
2x 208 TMUs
Render Output Units
48 ROPs
Render Output Units
2x 40 ROPs
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Streaming Multiprocessors
15 SMs
Streaming Multiprocessors
2x 13 SMs
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745MHz Base
875MHz
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560MHz Base
875MHz
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FP32
5.04 TFLOPS
FP32
8.74 TFLOPS
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FP64
1.68 TFLOPS
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FP64
2.91 TFLOPS
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Pixel Fillrate
42 GPixel/s
Pixel Fillrate
35 GPixel/s
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Texture Fillrate
210 GTexel/s
Texture Fillrate
182 GTexel/s
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L1
48KB/SM Tex
16KB/SM
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L1
48KB/SM Tex
16KB/SM
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L2
1.5MB Shared
L2
1.5MB Shared
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12GB
GDDR5
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2x 12GB
GDDR5
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Bus Width
384Bit
Bus Width
384Bit
Clock
1500MHz
Transfer Rate
6GT/s
Bandwidth
288GB/s
Clock
1250MHz
Transfer Rate
5GT/s
Bandwidth
240GB/s
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TDP
235W
TDP
300W
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No Ports
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No Ports
Max Resolution
Unknown
Max Resolution
Unknown
Max Resolution Refresh Rate
-
Max Resolution Refresh Rate
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Variable Refresh Rate
G-Sync
FreeSync
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Variable Refresh Rate
G-Sync
FreeSync
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Display Stream Compression (DSC)
Not Supported
Display Stream Compression (DSC)
Not Supported
Multi Monitor Support
Unknown
Multi Monitor Support
Unknown
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Model
NVENC 1
Model
NVENC 1
Codec
-
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AVC (H.264)
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Codec
-
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AVC (H.264)
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Model
NVDEC 1
Model
NVDEC 1
Codec
MPEG-1
MPEG-2
MPEG-4
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VC-1
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AVC (H.264)
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Codec
MPEG-1
MPEG-2
MPEG-4
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VC-1
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AVC (H.264)
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Direct X
12
Direct 3D
11_0
Direct X
12
Direct 3D
11_0
OpenGL
4.6
OpenCL
3.0
Vulkan
1.2
OpenGL
4.6
OpenCL
3.0
Vulkan
1.2
Shader Model
6.5
CUDA
3.5
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PureVideo HD
VP5
VDPAU
Feature Set D
Shader Model
6.5
CUDA
3.7
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PureVideo HD
VP5
VDPAU
Feature Set D
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Power Connectors
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1x 6-Pin
1x 8-Pin
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Power Connectors
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1x 8-Pin
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Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
16
Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
16
Multi GPU Support
Supported
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Multi GPU Support
Supported
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Height
111 mm (4.37 in)
Width
267 mm (10.51 in)
Depth
39 mm (1.54 in)
Height
111 mm (4.37 in)
Width
267 mm (10.51 in)
Depth
40 mm (1.57 in)
Change Results