NVIDIA Tesla K40m vs NVIDIA GeForce GTX 660
GPU · Specs Compare
Graphics Card
Release Date
Nov 2013
Sep 2012
Generation
Tesla
GeForce 600
Type
Professional
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
745 MHz
980 MHz
Boost Clock
876 MHz
1032 MHz
Memory Clock
1502 MHz
1502 MHz
Memory
Memory Size
12GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
192bit
Bandwidth
288.4GB/s
144.2GB/s
Render Config
Shading Units
2880
960
TMUs
240
80
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
20.64 GPixel/s
Texture Rate
210.2 GTexel/s
82.56 GTexel/s
FP32 (float)
5.046 TFLOPS
1.981 TFLOPS
FP64 (double)
1.682 TFLOPS
82.56 GFLOPS
Graphics Processor
GPU Name
GK110B
GK106
Architecture
Kepler
Kepler
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
7.08 billion
2.54 billion
Die Size
561 mm²
221 mm²
GPU Variant
—
GK106-400-A1
Board Design
TDP
245W
140W
Suggested PSU
550 W
300 W
Outputs
No outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
—
1x 6-pin
Graphics Features
DirectX
12 (11_1)
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
Benchmark
3DMark Time Spy
—
1,194
3DMark Time Spy Extreme
—
260
OctaneBench
—
27
Blender
—
111
▲ Specs Compare
Data sourced from official specifications and benchmark tests.