AMD Radeon Instinct MI8 vs NVIDIA RTX A4000
We compared two Professional market GPUs: 4GB VRAM Radeon Instinct MI8 and 16GB VRAM RTX A4000 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon Instinct MI8 's Advantages
Larger VRAM bandwidth (512.0GB/s vs 448.0GB/s)
NVIDIA RTX A4000 's Advantages
Released 4 years and 4 months late
Boost Clock1560MHz
More VRAM (16GB vs 4GB)
2048 additional rendering cores
Lower TDP (140W vs 175W)
Score
Benchmark
FP32 (float)
Radeon Instinct MI8
8.192 TFLOPS
RTX A4000
+134%
19.17 TFLOPS
Graphics Card
Dec 2016
Release Date
Apr 2021
Radeon Instinct
Generation
Quadro Ampere
Professional
Type
Professional
PCIe 3.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
735 MHz
-
Boost Clock
1560 MHz
500 MHz
Memory Clock
1750 MHz
Memory
4GB
Memory Size
16GB
HBM
Memory Type
GDDR6
4096bit
Memory Bus
256bit
512.0GB/s
Bandwidth
448.0GB/s
Render Config
64
Compute Units
-
-
SM Count
48
4096
Shading Units
6144
256
TMUs
192
64
ROPs
96
-
Tensor Cores
192
-
RT Cores
48
16 KB (per CU)
L1 Cache
128 KB (per SM)
2 MB
L2 Cache
4 MB
-
-
-
Theoretical Performance
64.00 GPixel/s
Pixel Rate
149.8 GPixel/s
256.0 GTexel/s
Texture Rate
299.5 GTexel/s
8.192 TFLOPS
FP16 (half)
19.17 TFLOPS
8.192 TFLOPS
FP32 (float)
19.17 TFLOPS
512.0 GFLOPS
FP64 (double)
299.5 GFLOPS
Board Design
175W
TDP
140W
450 W
Suggested PSU
300 W
No outputs
Outputs
4x DisplayPort 1.4a
1x 8-pin
Power Connectors
1x 6-pin
Graphics Processor
Fiji
GPU Name
GA104
Fiji XT CA
(215-0862120)
GPU Variant
GA104-875-A1
GCN 3.0
Architecture
Ampere
TSMC
Foundry
Samsung
28 nm
Process Size
8 nm
8.9 billion
Transistors
17.4 billion
596 mm²
Die Size
392 mm²
Graphics Features
12 (12_0)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
2.1
OpenCL
3.0
1.2.170
Vulkan
1.3
-
CUDA
8.6
6.5
Shader Model
6.7
