Radeon Instinct MI8 and GeForce RTX 4090 - video card comparison
Radeon Instinct MI8
GeForce RTX 4090
Architecture
GCN 3.0 (2014−2017)
Ada Lovelace
GPU code name
Fiji
AD102-300-A1
Market segment
Desktop
Desktop
Release date
December 2016
September 2022
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
1x 8-pin
1x 16-pin
Boost clock speed
-
2520 MHz
Core clock speed
1000 MHz
2235 MHz
Floating-point performance
8,192 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
8,900 million
76,300 million
Pipelines / CUDA cores
4096
16384
Power consumption (TDP)
175 Watt
450 Watt
Texture fill rate
256.0
1,290
Memory type
HBM
GDDR6X
Maximum RAM amount
4 GB
24 GB
Memory bus width
4096 Bit
384 Bit
Memory clock speed
1000 MHz
21000 MHz
Memory bandwidth
512.0 GB/s
1,008 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x HDMI 2.1, 3x DisplayPort 1.4a
HDMI
-
+
DirectX
12 (12_0)
12 Ultimate (12_2)
CUDA
-
8.9
OpenCL
2.0
3.0
OpenGL
4.6
4.6
Shader Model
6.3
6.6
Vulkan
1.2.131
1.3