Tesla K20 Server vs Tesla K40
Tesla K20 Server
Tesla K40
|
2496 Shaders
5GB GDDR5
758MHz
|
2880 Shaders
12GB GDDR5
617MHz
|
|
FP32
3.78 TFLOPS
|
FP32
3.56 TFLOPS
|
|
-
-
|
-
-
|
|
Form Factor
PCIe Card
2.0-Slots
|
Form Factor
PCIe Card
2.0-Slots
|
|
TDP
225W
|
TDP
235W
|
|
Power Connectors
1x 6-Pin
1x 8-Pin
-
-
|
Power Connectors
1x 6-Pin
1x 8-Pin
-
-
|
|
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
|
|
Family
Tesla K
|
Family
Tesla K
|
|
Codename
NVF0
GK110
Variant
GK110-885-KA-A1
|
Codename
NVF0
GK180
-
-
|
|
Market Segment
Server
|
Market Segment
Server
|
|
Release Date
1/5/2013
|
Release Date
11/22/2013
|
|
Foundry
TSMC
-
|
Foundry
TSMC
-
|
|
Fabrication Node
28nm
-
|
Fabrication Node
28nm
-
|
|
Die Size
561 mm²
-
|
Die Size
561 mm²
-
|
|
Transistor Count
7.1 Billion
-
|
Transistor Count
7.1 Billion
-
|
|
Transistor Density
12.62M/mm²
-
|
Transistor Density
12.62M/mm²
-
|
|
Form
PCIe Card
|
Form
PCIe Card
|
|
Shading Units
2496 Shaders
-
|
Shading Units
2880 Shaders
-
|
|
Texture Mapping Units
208 TMUs
|
Texture Mapping Units
240 TMUs
|
|
Render Output Units
40 ROPs
|
Render Output Units
48 ROPs
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
Streaming Multiprocessors
13 SMs
|
Streaming Multiprocessors
15 SMs
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
-
-
706MHz Base
758MHz
|
-
-
575MHz Base
617MHz
|
|
-
-
|
-
-
|
|
-
-
-
|
-
-
-
|
|
-
-
-
|
-
-
-
|
|
-
-
-
|
-
-
-
|
|
FP32
3.78 TFLOPS
|
FP32
3.56 TFLOPS
|
|
-
-
|
-
-
|
|
FP64
1.26 TFLOPS
-
|
FP64
1.19 TFLOPS
-
|
|
-
-
|
-
-
|
|
-
-
-
|
-
-
-
|
|
Pixel Fillrate
30.32 GPixel/s
|
Pixel Fillrate
29.633 GPixel/s
|
|
-
-
|
-
-
|
|
Texture Fillrate
157.664 GTexel/s
|
Texture Fillrate
148.164 GTexel/s
|
|
-
-
|
-
-
|
|
L1
48KB/SM Tex
16KB/SM
-
-
|
L1
48KB/SM Tex
16KB/SM
-
-
|
|
L2
1.5MB Shared
|
L2
1.5MB Shared
|
|
-
-
-
|
-
-
-
|
|
5GB
GDDR5
-
|
12GB
GDDR5
-
|
|
Bus Width
320Bit
|
Bus Width
384Bit
|
|
Clock
1300MHz
Transfer Rate
5.2GT/s
Bandwidth
208GB/s
|
Clock
1500MHz
Transfer Rate
6GT/s
Bandwidth
288GB/s
|
|
-
-
-
-
-
-
-
-
-
|
-
-
-
-
-
-
-
-
-
|
|
TDP
225W
|
TDP
235W
|
|
-
-
|
-
-
|
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
No Ports
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
No Ports
|
|
Max Resolution
Unknown
|
Max Resolution
Unknown
|
|
Max Resolution Refresh Rate
-
|
Max Resolution Refresh Rate
-
|
|
Variable Refresh Rate
G-Sync
FreeSync
-
|
Variable Refresh Rate
G-Sync
FreeSync
-
|
|
Display Stream Compression (DSC)
Not Supported
|
Display Stream Compression (DSC)
Not Supported
|
|
Multi Monitor Support
Unknown
|
Multi Monitor Support
Unknown
|
|
-
-
|
-
-
|
|
Model
NVENC 1
|
Model
NVENC 1
|
|
Codec
-
-
-
-
-
-
-
-
AVC (H.264)
-
-
-
-
-
|
Codec
-
-
-
-
-
-
-
-
AVC (H.264)
-
-
-
-
-
|
|
Model
NVDEC 1
|
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_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
-
-
PureVideo HD
VP5
VDPAU
Feature Set D
|
Shader Model
6.5
CUDA
3.5
-
-
PureVideo HD
VP5
VDPAU
Feature Set D
|
|
-
-
-
-
|
-
-
-
-
|
|
Power Connectors
-
-
1x 6-Pin
1x 8-Pin
-
-
-
|
Power Connectors
-
-
1x 6-Pin
1x 8-Pin
-
-
-
|
|
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
-
-
|
Multi GPU Support
Supported
-
-
|
|
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
39 mm (1.54 in)
|
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