NVIDIA Tesla K20Xm vs NVIDIA A800 SXM4 80 GB
GPU · Specs Compare
Graphics Card
Release Date
Nov 2012
Aug 2022
Generation
Tesla
Ampere
Type
Professional
AI GPU
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Memory Clock
1300 MHz
1593 MHz
Base Clock
—
1155 MHz
Boost Clock
—
1410 MHz
Memory
Memory Size
6GB
80GB
Memory Type
GDDR5
HBM2e
Memory Bus
384bit
5120bit
Bandwidth
249.6GB/s
2039GB/s
Render Config
Shading Units
2688
6912
TMUs
224
432
ROPs
48
160
L1 Cache
16 KB (per SMX)
192 KB (per SM)
L2 Cache
1536 KB
40 MB
SM Count
—
108
Tensor Cores
—
432
Theoretical Performance
Pixel Rate
40.99 GPixel/s
225.6 GPixel/s
Texture Rate
164.0 GTexel/s
609.1 GTexel/s
FP32 (float)
3.935 TFLOPS
19.49 TFLOPS
FP64 (double)
1312 GFLOPS
9.746 TFLOPS
FP16 (half)
—
77.97 TFLOPS
Graphics Processor
GPU Name
GK110
GA100
Architecture
Kepler
Ampere
Foundry
TSMC
TSMC
Process Size
28 nm
7 nm
Transistors
7.08 billion
54.2 billion
Die Size
561 mm²
826 mm²
Board Design
TDP
235W
400W
Suggested PSU
550 W
800 W
Outputs
No outputs
No outputs
Power Connectors
—
None
Graphics Features
DirectX
12 (11_0)
N/A
OpenGL
4.6
N/A
OpenCL
3.0
3.0
Vulkan
1.1
N/A
CUDA
3.5
8.0
Shader Model
5.1
N/A
▲ Specs Compare
Data sourced from official specifications and benchmark tests.