NVIDIA GeForce RTX 4090 vs AMD Radeon Instinct MI8
GPU Specs Compare
Graphics Card
Release Date
Sep 2022
Dec 2016
Generation
GeForce 40
Radeon Instinct
Type
Desktop
Professional
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
2235 MHz
-
Boost Clock
2520 MHz
-
Memory Clock
1313 MHz
500 MHz
Memory
Memory Size
24GB
4GB
Memory Type
GDDR6X
HBM
Memory Bus
384bit
4096bit
Bandwidth
1.01TB/s
512.0GB/s
Render Config
SM Count
128
-
Shading Units
16384
4096
TMUs
512
256
ROPs
176
64
Tensor Cores
512
-
RT Cores
128
-
L1 Cache
128 KB (per SM)
16 KB (per CU)
L2 Cache
72 MB
2 MB
Compute Units
-
64
Theoretical Performance
Pixel Rate
443.5 GPixel/s
64.00 GPixel/s
Texture Rate
1290.2 GTexel/s
256.0 GTexel/s
FP16 (half)
82.58 TFLOPS
8.192 TFLOPS
FP32 (float)
82.58 TFLOPS
8.192 TFLOPS
FP64 (double)
1290.2 GFLOPS
512.0 GFLOPS
Graphics Processor
GPU Name
AD102
Fiji
GPU Variant
AD102-300-A1
Fiji XT CA(215-0862120)
Architecture
Ada Lovelace
GCN 3.0
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
76.3 billion
8.9 billion
Die Size
609 mm²
596 mm²
Board Design
TDP
450W
175W
Suggested PSU
850 W
450 W
Outputs
1x HDMI 2.13x DisplayPort 1.4a
No outputs
Power Connectors
1x 16-pin
1x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
3.0
2.1
Vulkan
1.4
1.2.170
CUDA
8.9
-
Shader Model
6.8
6.5