AMD Radeon Instinct MI8 vs NVIDIA RTX A4000 Mobile
We compared two Professional market GPUs: 4GB VRAM Radeon Instinct MI8 and 8GB VRAM RTX A4000 Mobile 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 384.0GB/s)
NVIDIA RTX A4000 Mobile 's Advantages
Released 4 years and 4 months late
Boost Clock1680MHz
More VRAM (8GB vs 4GB)
1024 additional rendering cores
Lower TDP (115W vs 175W)
Score
Benchmark
FP32 (float)
Radeon Instinct MI8
8.192 TFLOPS
RTX A4000 Mobile
+109%
17.2 TFLOPS
Graphics Card
Dec 2016
Release Date
Apr 2021
Radeon Instinct
Generation
Ampere-MW
Professional
Type
Professional
PCIe 3.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
1140 MHz
-
Boost Clock
1680 MHz
500 MHz
Memory Clock
1500 MHz
Memory
4GB
Memory Size
8GB
HBM
Memory Type
GDDR6
4096bit
Memory Bus
256bit
512.0GB/s
Bandwidth
384.0GB/s
Render Config
64
Compute Units
-
-
SM Count
40
4096
Shading Units
5120
256
TMUs
160
64
ROPs
80
-
Tensor Cores
160
-
RT Cores
40
16 KB (per CU)
L1 Cache
128 KB (per SM)
2 MB
L2 Cache
4 MB
-
-
-
Theoretical Performance
64.00 GPixel/s
Pixel Rate
134.4 GPixel/s
256.0 GTexel/s
Texture Rate
268.8 GTexel/s
8.192 TFLOPS
FP16 (half)
17.20 TFLOPS
8.192 TFLOPS
FP32 (float)
17.20 TFLOPS
512.0 GFLOPS
FP64 (double)
268.8 GFLOPS
Board Design
175W
TDP
115W
450 W
Suggested PSU
-
No outputs
Outputs
Portable Device Dependent
1x 8-pin
Power Connectors
None
Graphics Processor
Fiji
GPU Name
GA104
Fiji XT CA
(215-0862120)
GPU Variant
-
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
6.8
