NVIDIA GeForce GTX 870M vs NVIDIA Tesla K40st
GPU Specs Compare
Graphics Card
Release Date
Mar 2014
Nov 2013
Generation
GeForce 800M
Tesla
Type
Mobile
Professional
Bus Interface
MXM-B (3.0)
PCIe 3.0 x16
Clock Speeds
Base Clock
941 MHz
-
Boost Clock
967 MHz
-
Memory Clock
1250 MHz
1502 MHz
Memory
Memory Size
3GB
12GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
384bit
Bandwidth
120.0GB/s
288.4GB/s
Render Config
Shading Units
1344
2880
TMUs
112
240
ROPs
24
48
L1 Cache
16 KB (per SMX)
16 KB (per SMX)
L2 Cache
384 KB
1536 KB
Theoretical Performance
Pixel Rate
27.08 GPixel/s
34.50 GPixel/s
Texture Rate
108.3 GTexel/s
138.0 GTexel/s
FP32 (float)
2.599 TFLOPS
3.312 TFLOPS
FP64 (double)
108.3 GFLOPS
1104 GFLOPS
Graphics Processor
GPU Name
GK104
GK110B
GPU Variant
N15E-GT-A2
-
Architecture
Kepler
Kepler
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
3.54 billion
7.08 billion
Die Size
294 mm²
561 mm²
Board Design
TDP
100W
245W
Outputs
No outputs
No outputs
Power Connectors
None
-
Suggested PSU
-
550 W
Graphics Features
DirectX
12 (11_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.1
1.1
CUDA
3.0
3.5
Shader Model
5.1
5.1