NVIDIA Tesla K20c vs NVIDIA Quadro K420
We compared two Professional market GPUs: 5GB VRAM Tesla K20c and 1024MB VRAM Quadro K420 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA Tesla K20c 's Advantages
More VRAM (5GB vs 1024GB)
Larger VRAM bandwidth (208.0GB/s vs 28.51GB/s)
2304 additional rendering cores
NVIDIA Quadro K420 's Advantages
Released 1 years and 8 months late
Lower TDP (41W vs 225W)
Score
Benchmark
FP32 (float)
Tesla K20c
+948%
3.524 TFLOPS
Quadro K420
0.336 TFLOPS
Graphics Card
Nov 2012
Release Date
Jul 2014
Tesla
Generation
Quadro
Professional
Type
Professional
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1300 MHz
Memory Clock
891 MHz
Memory
5GB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
320bit
Memory Bus
128bit
208.0GB/s
Bandwidth
28.51GB/s
Render Config
-
-
-
-
-
-
2496
Shading Units
192
208
TMUs
16
40
ROPs
16
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
1280 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
36.71 GPixel/s
Pixel Rate
3.504 GPixel/s
146.8 GTexel/s
Texture Rate
14.02 GTexel/s
-
-
-
3.524 TFLOPS
FP32 (float)
336.4 GFLOPS
1175 GFLOPS
FP64 (double)
14.02 GFLOPS
Board Design
225W
TDP
41W
550 W
Suggested PSU
200 W
No outputs
Outputs
1x DVI
1x DisplayPort 1.2
1x 6-pin + 1x 8-pin
Power Connectors
None
Graphics Processor
GK110
GPU Name
GK107
GK110-885-KA-A1
GPU Variant
GK107-301-A2
Kepler
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
7.08 billion
Transistors
1.27 billion
561 mm²
Die Size
118 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.1
3.5
CUDA
3.0
5.1
Shader Model
5.1
