NVIDIA Tesla K80 vs NVIDIA Tesla K40m
GPU Specs Compare
Graphics Card
Release Date
Nov 2014
Nov 2013
Generation
Tesla
Tesla
Type
Professional
Professional
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
562 MHz
745 MHz
Boost Clock
824 MHz
876 MHz
Memory Clock
1253 MHz
1502 MHz
Memory
Memory Size
12GB
12GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
384bit
Bandwidth
240.6GB/s
288.4GB/s
Render Config
Shading Units
2496
2880
TMUs
208
240
ROPs
48
48
L1 Cache
16 KB (per SMX)
16 KB (per SMX)
L2 Cache
1536 KB
1536 KB
Theoretical Performance
Pixel Rate
42.85 GPixel/s
52.56 GPixel/s
Texture Rate
171.4 GTexel/s
210.2 GTexel/s
FP32 (float)
4.113 TFLOPS
5.046 TFLOPS
FP64 (double)
1371 GFLOPS
1.682 TFLOPS
Graphics Processor
GPU Name
GK210
GK110B
GPU Variant
GK210-885-A1
-
Architecture
Kepler 2.0
Kepler
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
7.1 billion
7.08 billion
Die Size
561 mm²
561 mm²
Board Design
TDP
300W
245W
Suggested PSU
700 W
550 W
Outputs
No outputs
No outputs
Power Connectors
1x 8-pin
-
Graphics Features
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.1
1.1
CUDA
3.7
3.5
Shader Model
5.1
5.1