AMD Radeon RX 6900 XTX vs AMD Radeon Instinct MI8
GPU · Specs Compare
Graphics Card
Release Date
Unknown
Dec 2016
Generation
Navi II
Radeon Instinct
Type
Desktop
Professional
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
2075 MHz
—
Boost Clock
2435 MHz
—
Memory Clock
2250 MHz
500 MHz
Memory
Memory Size
16GB
4GB
Memory Type
GDDR6
HBM
Memory Bus
256bit
4096bit
Bandwidth
576.0GB/s
512.0GB/s
Render Config
Compute Units
80
64
Shading Units
5120
4096
TMUs
320
256
ROPs
128
64
RT Cores
80
—
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
4 MB
2 MB
L3 Cache
128 MB
—
Theoretical Performance
Pixel Rate
311.7 GPixel/s
64.00 GPixel/s
Texture Rate
779.2 GTexel/s
256.0 GTexel/s
FP16 (half)
49.87 TFLOPS
8.192 TFLOPS
FP32 (float)
24.93 TFLOPS
8.192 TFLOPS
FP64 (double)
1.558 TFLOPS
512.0 GFLOPS
Graphics Processor
GPU Name
Navi 21
Fiji
GPU Variant
Navi 21 XTXH(215-121000247)
Fiji XT CA(215-0862120)
Architecture
RDNA 2.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
26.8 billion
8.9 billion
Die Size
520 mm²
596 mm²
Board Design
TDP
330W
175W
Suggested PSU
700 W
450 W
Outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
No outputs
Power Connectors
2x 8-pin
1x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.1
Vulkan
1.3
1.2.170
Shader Model
6.5
6.5
▲ Specs Compare
Data sourced from official specifications and benchmark tests.