NVIDIA Tesla K20c vs NVIDIA RTX A4500
We compared two Professional market GPUs: 5GB VRAM Tesla K20c and 20GB VRAM RTX A4500 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA RTX A4500 's Advantages
Released 9 years late
Boost Clock1650MHz
More VRAM (20GB vs 5GB)
Larger VRAM bandwidth (640.0GB/s vs 208.0GB/s)
4672 additional rendering cores
Lower TDP (200W vs 225W)
Score
Benchmark
FP32 (float)
Tesla K20c
3.524 TFLOPS
RTX A4500
+571%
23.65 TFLOPS
Graphics Card
Nov 2012
Release Date
Nov 2021
Tesla
Generation
Quadro Ampere
Professional
Type
Professional
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
1050 MHz
-
Boost Clock
1650 MHz
1300 MHz
Memory Clock
2000 MHz
Memory
5GB
Memory Size
20GB
GDDR5
Memory Type
GDDR6
320bit
Memory Bus
320bit
208.0GB/s
Bandwidth
640.0GB/s
Render Config
-
-
-
-
SM Count
56
2496
Shading Units
7168
208
TMUs
224
40
ROPs
96
-
Tensor Cores
224
-
RT Cores
56
16 KB (per SMX)
L1 Cache
128 KB (per SM)
1280 KB
L2 Cache
6 MB
-
-
-
Theoretical Performance
36.71 GPixel/s
Pixel Rate
158.4 GPixel/s
146.8 GTexel/s
Texture Rate
369.6 GTexel/s
-
FP16 (half)
23.65 TFLOPS
3.524 TFLOPS
FP32 (float)
23.65 TFLOPS
1175 GFLOPS
FP64 (double)
369.6 GFLOPS
Board Design
225W
TDP
200W
550 W
Suggested PSU
550 W
No outputs
Outputs
4x DisplayPort 1.4a
1x 6-pin + 1x 8-pin
Power Connectors
1x 8-pin
Graphics Processor
GK110
GPU Name
GA102
GK110-885-KA-A1
GPU Variant
-
Kepler
Architecture
Ampere
TSMC
Foundry
Samsung
28 nm
Process Size
8 nm
7.08 billion
Transistors
28.3 billion
561 mm²
Die Size
628 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
