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GPU Comparison
NVIDIA RTX A4000 vs NVIDIA Quadro K420
NVIDIA RTX A4000 vs NVIDIA Quadro K420
VS
NVIDIA RTX A4000
NVIDIA Quadro K420
We compared two Professional market GPUs: 16GB VRAM RTX A4000 and 1024MB VRAM Quadro K420 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA RTX A4000 's Advantages
Released 6 years and 9 months late
Boost Clock1560MHz
More VRAM (16GB vs 1GB)
Larger VRAM bandwidth (448.0GB/s vs 28.51GB/s)
5952 additional rendering cores
NVIDIA Quadro K420 's Advantages
Lower TDP (41W vs 140W)
Score
Benchmark
FP32 (float)
RTX A4000
+5605%
19.17 TFLOPS
Quadro K420
0.336 TFLOPS
RTX A4000
VS
Quadro K420
Graphics Card
Apr 2021
Release Date
Jul 2014
Quadro Ampere
Generation
Quadro
Professional
Type
Professional
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
735 MHz
Base Clock
-
1560 MHz
Boost Clock
-
1750 MHz
Memory Clock
891 MHz
Memory
16GB
Memory Size
1024MB
GDDR6
Memory Type
DDR3
256bit
Memory Bus
128bit
448.0GB/s
Bandwidth
28.51GB/s
Render Config
48
SM Count
-
-
Compute Units
-
6144
Shading Units
192
192
TMUs
16
96
ROPs
16
192
Tensor Cores
-
48
RT Cores
-
128 KB (per SM)
L1 Cache
16 KB (per SMX)
4 MB
L2 Cache
256 KB
Theoretical Performance
149.8 GPixel/s
Pixel Rate
3.504 GPixel/s
299.5 GTexel/s
Texture Rate
14.02 GTexel/s
19.17 TFLOPS
FP16 (half)
-
19.17 TFLOPS
FP32 (float)
336.4 GFLOPS
299.5 GFLOPS
FP64 (double)
14.02 GFLOPS
Graphics Processor
GA104
GPU Name
GK107
GA104-875-A1
GPU Variant
GK107-301-A2
Ampere
Architecture
Kepler
Samsung
Foundry
TSMC
8 nm
Process Size
28 nm
17.4 billion
Transistors
1.27 billion
392 mm²
Die Size
118 mm²
Board Design
140W
TDP
41W
300 W
Suggested PSU
200 W
4x DisplayPort 1.4a
Outputs
1x DVI 1x DisplayPort 1.2
1x 6-pin
Power Connectors
None
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
3.0
6.7
Shader Model
5.1
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6
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