RTX A4000 vs Radeon Instinct MI250
We compared two Professional market GPUs: 16GB VRAM RTX A4000 and 128GB VRAM Radeon Instinct MI250 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
RTX A4000 's Advantages
Lower TDP (140W vs 500W)
Radeon Instinct MI250 's Advantages
Released 7 months late
Boost Clock has increased by 9% (1700MHz vs 1560MHz)
More VRAM (128GB vs 16GB)
Larger VRAM bandwidth (3277GB/s vs 448.0GB/s)
7168 additional rendering cores
Score
Benchmark
FP32 (float)
RTX A4000
19170
Radeon Instinct MI250
+136%
45260
Graphics Card
Apr 2021
Release Date
Nov 2021
Quadro Ampere
Generation
Radeon Instinct
Professional
Type
Professional
PCIe 4.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
735 MHz
Base Clock
1000 MHz
1560 MHz
Boost Clock
1700 MHz
1750 MHz
Memory Clock
1600 MHz
Memory
16GB
Memory Size
128GB
GDDR6
Memory Type
HBM2e
256bit
Memory Bus
8192bit
448.0GB/s
Bandwidth
3277GB/s
Render Config
-
Compute Units
208
48
SM Count
-
6144
Shading Units
13312
192
TMUs
832
96
ROPs
0
192
Tensor Cores
-
48
RT Cores
-
128 KB (per SM)
L1 Cache
16 KB (per CU)
4 MB
L2 Cache
16 MB
Theoretical Performance
149.8 GPixel/s
Pixel Rate
0 MPixel/s
299.5 GTexel/s
Texture Rate
1414 GTexel/s
19.17 TFLOPS
FP16 (half)
362.1 TFLOPS
19.17 TFLOPS
FP32 (float)
45.26 TFLOPS
299.5 GFLOPS
FP64 (double)
45.26 TFLOPS
Board Design
140W
TDP
500W
300 W
Suggested PSU
900 W
4x DisplayPort 1.4a
Outputs
No outputs
1x 6-pin
Power Connectors
2x 8-pin
Graphics Processor
GA104
GPU Name
Aldebaran
GA104-875-A1
GPU Variant
Aldebaran
Ampere
Architecture
CDNA 2.0
Samsung
Foundry
TSMC
8 nm
Process Size
6 nm
17.4 billion
Transistors
58.2 billion
392 mm²
Die Size
Unknown
Graphics Features
12 Ultimate (12_2)
DirectX
N/A
4.6
OpenGL
N/A
3.0
OpenCL
3.0
1.3
Vulkan
N/A
8.6
CUDA
-
6.7
Shader Model
N/A
