NVIDIA Tesla K20X vs NVIDIA Quadro K620
We compared two Professional market GPUs: 6GB VRAM Tesla K20X and 2GB VRAM Quadro K620 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA Tesla K20X 's Advantages
More VRAM (6GB vs 2GB)
Larger VRAM bandwidth (249.6GB/s vs 28.80GB/s)
2304 additional rendering cores
NVIDIA Quadro K620 's Advantages
Released 1 years and 8 months late
Boost Clock1124MHz
Lower TDP (45W vs 235W)
Score
Benchmark
FP32 (float)
Tesla K20X
+355%
3.935 TFLOPS
Quadro K620
0.863 TFLOPS
Graphics Card
Nov 2012
Release Date
Jul 2014
Tesla
Generation
Quadro
Professional
Type
Professional
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
1058 MHz
-
Boost Clock
1124 MHz
1300 MHz
Memory Clock
900 MHz
Memory
6GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
384bit
Memory Bus
128bit
249.6GB/s
Bandwidth
28.80GB/s
Render Config
-
-
-
-
-
-
2688
Shading Units
384
224
TMUs
24
48
ROPs
16
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
64 KB (per SMM)
1536 KB
L2 Cache
2 MB
-
-
-
Theoretical Performance
40.99 GPixel/s
Pixel Rate
17.98 GPixel/s
164.0 GTexel/s
Texture Rate
26.98 GTexel/s
-
-
-
3.935 TFLOPS
FP32 (float)
863.2 GFLOPS
1312 GFLOPS
FP64 (double)
26.98 GFLOPS
Board Design
235W
TDP
45W
550 W
Suggested PSU
200 W
No outputs
Outputs
1x DVI
1x DisplayPort 1.4a
1x 6-pin + 1x 8-pin
Power Connectors
None
Graphics Processor
GK110
GPU Name
GM107
-
GPU Variant
GM107-850-A2
Kepler
Architecture
Maxwell
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
7.08 billion
Transistors
1.87 billion
561 mm²
Die Size
148 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.3
3.5
CUDA
5.0
5.1
Shader Model
5.1
