NVIDIA Tesla K20c vs NVIDIA RTX A4 Mobile
GPU Specs Compare
Graphics Card
Release Date
Nov 2012
Apr 2021
Generation
Tesla
Quadro Ampere-M
Type
Professional
Professional
Bus Interface
PCIe 2.0 x16
PCIe 4.0 x8
Clock Speeds
Memory Clock
1300 MHz
1750 MHz
Base Clock
-
1297 MHz
Boost Clock
-
1770 MHz
Memory
Memory Size
5GB
4GB
Memory Type
GDDR5
GDDR6
Memory Bus
320bit
128bit
Bandwidth
208.0GB/s
224.0GB/s
Render Config
Shading Units
2496
2048
TMUs
208
64
ROPs
40
32
L1 Cache
16 KB (per SMX)
128 KB (per SM)
L2 Cache
1280 KB
2 MB
SM Count
-
16
Tensor Cores
-
64
RT Cores
-
16
Theoretical Performance
Pixel Rate
36.71 GPixel/s
56.64 GPixel/s
Texture Rate
146.8 GTexel/s
113.3 GTexel/s
FP32 (float)
3.524 TFLOPS
7.250 TFLOPS
FP64 (double)
1175 GFLOPS
113.3 GFLOPS
FP16 (half)
-
7.250 TFLOPS
Graphics Processor
GPU Name
GK110
GA107
GPU Variant
GK110-885-KA-A1
-
Architecture
Kepler
Ampere
Foundry
TSMC
Samsung
Process Size
28 nm
8 nm
Transistors
7.08 billion
8.7 billion
Die Size
561 mm²
200 mm²
Board Design
TDP
225W
Unknown
Suggested PSU
550 W
-
Outputs
No outputs
Portable Device Dependent
Power Connectors
1x 6-pin + 1x 8-pin
None
Graphics Features
DirectX
12 (11_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.1
1.3
CUDA
3.5
8.6
Shader Model
5.1
6.7
📊 Benchmark
OctaneBench
55
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