NVIDIA Tesla K20s vs NVIDIA GeForce GTX 660 OEM
GPU · Specs Compare
Graphics Card
Release Date
Feb 2013
Aug 2012
Generation
Tesla
GeForce 600
Type
Professional
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1300 MHz
1400 MHz
Base Clock
—
823 MHz
Boost Clock
—
888 MHz
Memory
Memory Size
5GB
1536MB
Memory Type
GDDR5
GDDR5
Memory Bus
320bit
192bit
Bandwidth
208.0GB/s
134.4GB/s
Render Config
Shading Units
2496
1152
TMUs
208
96
ROPs
40
24
L1 Cache
16 KB (per SMX)
16 KB (per SMX)
L2 Cache
1280 KB
384 KB
Theoretical Performance
Pixel Rate
29.90 GPixel/s
21.31 GPixel/s
Texture Rate
119.6 GTexel/s
85.25 GTexel/s
FP32 (float)
2.870 TFLOPS
2.046 TFLOPS
FP64 (double)
956.8 GFLOPS
85.25 GFLOPS
Graphics Processor
GPU Name
GK110
GK104
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
GPU Variant
—
GK104-200-KD-A2
Board Design
TDP
225W
130W
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_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
Benchmark
3DMark Time Spy
—
1,194
3DMark Time Spy Extreme
—
260
▲ Specs Compare
Data sourced from official specifications and benchmark tests.