NVIDIA Tesla P40 vs NVIDIA Tesla K40d
GPU · Specs Compare
Graphics Card
Release Date
Sep 2016
Nov 2013
Generation
Tesla Pascal
Tesla Kepler
Type
Professional
Professional
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1303 MHz
745 MHz
Boost Clock
1531 MHz
876 MHz
Memory Clock
1808 MHz
1502 MHz
Memory
Memory Size
24GB
12GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
384bit
Bandwidth
347.1GB/s
288.4GB/s
Render Config
SM Count
30
—
Shading Units
3840
2880
TMUs
240
240
ROPs
96
48
L1 Cache
48 KB (per SM)
16 KB (per SMX)
L2 Cache
3 MB
1536 KB
Theoretical Performance
Pixel Rate
147.0 GPixel/s
52.56 GPixel/s
Texture Rate
367.4 GTexel/s
210.2 GTexel/s
FP16 (half)
183.7 GFLOPS
—
FP32 (float)
11.76 TFLOPS
5.046 TFLOPS
FP64 (double)
367.4 GFLOPS
1.682 TFLOPS
Graphics Processor
GPU Name
GP102
GK110B
Architecture
Pascal
Kepler
Foundry
TSMC
TSMC
Process Size
16 nm
28 nm
Transistors
11.8 billion
7.08 billion
Die Size
471 mm²
561 mm²
Board Design
TDP
250W
245W
Suggested PSU
600 W
550 W
Outputs
No outputs
No outputs
Power Connectors
8-pin EPS
—
Graphics Features
DirectX
12 (12_1)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.3
1.2.175
CUDA
6.1
3.5
Shader Model
6.7
6.5 (5.1)
▲ Specs Compare
Data sourced from official specifications and benchmark tests.