AMD Radeon Instinct MI308X vs AMD Radeon RX 6900 XT
GPU · Specs Compare
Graphics Card
Release Date
Dec 2023
Oct 2020
Generation
Radeon Instinct
Navi II
Type
Professional
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
1000 MHz
1825 MHz
Boost Clock
2100 MHz
2250 MHz
Memory Clock
1300 MHz
2000 MHz
Memory
Memory Size
192GB
16GB
Memory Type
HBM3
GDDR6
Memory Bus
8192bit
256bit
Bandwidth
5.32TB/s
512.0GB/s
Render Config
Compute Units
304
80
Shading Units
19456
5120
TMUs
1216
320
ROPs
0
128
Tensor Cores
1216
—
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
16 MB
4 MB
L3 Cache
256 MB
128 MB
RT Cores
—
80
Theoretical Performance
Pixel Rate
0 MPixel/s
288.0 GPixel/s
Texture Rate
2553.6 GTexel/s
720.0 GTexel/s
FP16 (half)
81.72 TFLOPS
46.08 TFLOPS
FP32 (float)
81.72 TFLOPS
23.04 TFLOPS
FP64 (double)
40.86 TFLOPS
1440.0 GFLOPS
Graphics Processor
GPU Name
Aqua Vanjaram
Navi 21
Architecture
CDNA 3.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
5 nm
7 nm
Transistors
153 billion
26.8 billion
Die Size
1017 mm²
520 mm²
GPU Variant
—
Navi 21 XTX(215-121000167)
Board Design
TDP
750W
300W
Suggested PSU
1150 W
700 W
Outputs
No outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
Power Connectors
None
2x 8-pin
Graphics Features
DirectX
N/A
12 Ultimate (12_2)
OpenGL
N/A
4.6
OpenCL
3.0
2.1
Vulkan
N/A
1.4
Shader Model
N/A
6.8
Benchmark
3DMark Time Spy
—
20,764
▲ Specs Compare
Data sourced from official specifications and benchmark tests.