NVIDIA Tesla K40c vs NVIDIA GeForce GTX 870M
GPU · Specs Compare
Graphics Card
Release Date
Oct 2013
Mar 2014
Generation
Tesla
GeForce 800M
Type
Professional
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
745 MHz
941 MHz
Boost Clock
876 MHz
967 MHz
Memory Clock
1502 MHz
1250 MHz
Memory
Memory Size
12GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
192bit
Bandwidth
288.4GB/s
120.0GB/s
Render Config
Shading Units
2880
1344
TMUs
240
112
ROPs
48
24
L1 Cache
16 KB (per SMX)
16 KB (per SMX)
L2 Cache
1536 KB
384 KB
Theoretical Performance
Pixel Rate
52.56 GPixel/s
27.08 GPixel/s
Texture Rate
210.2 GTexel/s
108.3 GTexel/s
FP32 (float)
5.046 TFLOPS
2.599 TFLOPS
FP64 (double)
1.682 TFLOPS
108.3 GFLOPS
Graphics Processor
GPU Name
GK180
GK104
GPU Variant
GK180-890-A1
N15E-GT-A2
Architecture
Kepler
Kepler
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
7.08 billion
3.54 billion
Die Size
561 mm²
294 mm²
Board Design
TDP
245W
100W
Suggested PSU
550 W
—
Outputs
No outputs
No outputs
Power Connectors
1x 6-pin + 1x 8-pin
None
Graphics Features
DirectX
12 (11_0)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.1
1.1
CUDA
3.5
3.0
Shader Model
5.1
5.1
▲ Specs Compare
Data sourced from official specifications and benchmark tests.