RTX A4000 vs Tesla K20X
We compared two Professional market GPUs: 16GB VRAM RTX A4000 and 6GB VRAM Tesla K20X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
RTX A4000 's Advantages
Released 8 years and 5 months late
Boost Clock1560MHz
More VRAM (16GB vs 6GB)
Larger VRAM bandwidth (448.0GB/s vs 249.6GB/s)
3456 additional rendering cores
Lower TDP (140W vs 235W)
Score
Benchmark
FP32 (float)
RTX A4000
+387%
19170
Tesla K20X
3935
Graphics Card
Apr 2021
Release Date
Nov 2012
Quadro Ampere
Generation
Tesla
Professional
Type
Professional
PCIe 4.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
735 MHz
Base Clock
-
1560 MHz
Boost Clock
-
1750 MHz
Memory Clock
1300 MHz
Memory
16GB
Memory Size
6GB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
384bit
448.0GB/s
Bandwidth
249.6GB/s
Render Config
48
SM Count
-
6144
Shading Units
2688
192
TMUs
224
96
ROPs
48
192
Tensor Cores
-
48
RT Cores
-
128 KB (per SM)
L1 Cache
16 KB (per SMX)
4 MB
L2 Cache
1536 KB
Theoretical Performance
149.8 GPixel/s
Pixel Rate
40.99 GPixel/s
299.5 GTexel/s
Texture Rate
164.0 GTexel/s
19.17 TFLOPS
FP16 (half)
-
19.17 TFLOPS
FP32 (float)
3.935 TFLOPS
299.5 GFLOPS
FP64 (double)
1312 GFLOPS
Board Design
140W
TDP
235W
300 W
Suggested PSU
550 W
4x DisplayPort 1.4a
Outputs
No outputs
1x 6-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Processor
GA104
GPU Name
GK110
GA104-875-A1
GPU Variant
-
Ampere
Architecture
Kepler
Samsung
Foundry
TSMC
8 nm
Process Size
28 nm
17.4 billion
Transistors
7.08 billion
392 mm²
Die Size
561 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.3
Vulkan
1.1
8.6
CUDA
3.5
6.7
Shader Model
5.1
