AMD Radeon RX 6800 vs AMD Radeon Instinct MI300X
GPU · Specs Compare
Graphics Card
Release Date
Oct 2020
Dec 2023
Generation
Navi II
Radeon Instinct
Type
Desktop
Professional
Bus Interface
PCIe 4.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
1700 MHz
1000 MHz
Boost Clock
2105 MHz
2100 MHz
Memory Clock
2000 MHz
1300 MHz
Memory
Memory Size
16GB
192GB
Memory Type
GDDR6
HBM3
Memory Bus
256bit
8192bit
Bandwidth
512.0GB/s
5.32TB/s
Render Config
Compute Units
60
304
Shading Units
3840
19456
TMUs
240
1216
ROPs
96
0
RT Cores
60
—
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
4 MB
16 MB
L3 Cache
128 MB
256 MB
Tensor Cores
—
1216
Theoretical Performance
Pixel Rate
202.1 GPixel/s
0 MPixel/s
Texture Rate
505.2 GTexel/s
2553.6 GTexel/s
FP16 (half)
32.33 TFLOPS
81.72 TFLOPS
FP32 (float)
16.17 TFLOPS
81.72 TFLOPS
FP64 (double)
1010 GFLOPS
40.86 TFLOPS
Graphics Processor
GPU Name
Navi 21
Aqua Vanjaram
GPU Variant
Navi 21 XL(215-121000187)
—
Architecture
RDNA 2.0
CDNA 3.0
Foundry
TSMC
TSMC
Process Size
7 nm
5 nm
Transistors
26.8 billion
153 billion
Die Size
520 mm²
1017 mm²
Board Design
TDP
250W
750W
Suggested PSU
600 W
1150 W
Outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
No outputs
Power Connectors
2x 8-pin
None
Graphics Features
DirectX
12 Ultimate (12_2)
N/A
OpenGL
4.6
N/A
OpenCL
2.1
3.0
Vulkan
1.3
N/A
Shader Model
6.5
N/A
Benchmark
3DMark Time Spy
16,182
—
3DMark Time Spy Extreme
7,771
—
3DMark Speed Way
3,062
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.