NVIDIA Tesla K20c vs NVIDIA RTX A4000
We compared two Professional market GPUs: 5GB VRAM Tesla K20c and 16GB VRAM RTX A4000 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA RTX A4000 's Advantages
Released 8 years and 5 months late
Boost Clock1560MHz
More VRAM (16GB vs 5GB)
Larger VRAM bandwidth (448.0GB/s vs 208.0GB/s)
3648 additional rendering cores
Lower TDP (140W vs 225W)
Score
Benchmark
FP32 (float)
Tesla K20c
3.524 TFLOPS
RTX A4000
+443%
19.17 TFLOPS
OctaneBench
Tesla K20c
55
RTX A4000
+540%
352
Graphics Card
Nov 2012
Release Date
Apr 2021
Tesla
Generation
Quadro Ampere
Professional
Type
Professional
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
735 MHz
-
Boost Clock
1560 MHz
1300 MHz
Memory Clock
1750 MHz
Memory
5GB
Memory Size
16GB
GDDR5
Memory Type
GDDR6
320bit
Memory Bus
256bit
208.0GB/s
Bandwidth
448.0GB/s
Render Config
-
-
-
-
SM Count
48
2496
Shading Units
6144
208
TMUs
192
40
ROPs
96
-
Tensor Cores
192
-
RT Cores
48
16 KB (per SMX)
L1 Cache
128 KB (per SM)
1280 KB
L2 Cache
4 MB
-
-
-
Theoretical Performance
36.71 GPixel/s
Pixel Rate
149.8 GPixel/s
146.8 GTexel/s
Texture Rate
299.5 GTexel/s
-
FP16 (half)
19.17 TFLOPS
3.524 TFLOPS
FP32 (float)
19.17 TFLOPS
1175 GFLOPS
FP64 (double)
299.5 GFLOPS
Board Design
225W
TDP
140W
550 W
Suggested PSU
300 W
No outputs
Outputs
4x DisplayPort 1.4a
1x 6-pin + 1x 8-pin
Power Connectors
1x 6-pin
Graphics Processor
GK110
GPU Name
GA104
GK110-885-KA-A1
GPU Variant
GA104-875-A1
Kepler
Architecture
Ampere
TSMC
Foundry
Samsung
28 nm
Process Size
8 nm
7.08 billion
Transistors
17.4 billion
561 mm²
Die Size
392 mm²
Graphics Features
12 (11_0)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.3
3.5
CUDA
8.6
5.1
Shader Model
6.7
