AMD Radeon RX 6800 3456SP vs AMD Radeon Instinct MI350X
GPU Specs Compare
Graphics Card
Release Date
Unknown
Jun 2025
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
2250 MHz
2200 MHz
Memory Clock
2000 MHz
2000 MHz
Memory
Memory Size
16GB
288GB
Memory Type
GDDR6
HBM3e
Memory Bus
256bit
8192bit
Bandwidth
512.0GB/s
8.19TB/s
Render Config
Compute Units
54
256
Shading Units
3456
16384
TMUs
216
1024
ROPs
96
0
RT Cores
54
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
4 MB
16 MB
L3 Cache
128 MB
256 MB
Tensor Cores
-
1024
Theoretical Performance
Pixel Rate
216.0 GPixel/s
0 MPixel/s
Texture Rate
486.0 GTexel/s
2252.8 GTexel/s
FP16 (half)
31.10 TFLOPS
72.09 TFLOPS
FP32 (float)
15.55 TFLOPS
72.09 TFLOPS
FP64 (double)
972.0 GFLOPS
36.04 TFLOPS
Graphics Processor
GPU Name
Navi 21
MI350 256CU
GPU Variant
Navi 21 ES(215-121000066)
-
Architecture
RDNA 2.0
CDNA 4.0
Foundry
TSMC
TSMC
Process Size
7 nm
3 nm
Transistors
26.8 billion
185 billion
Die Size
520 mm²
Unknown
Board Design
TDP
250W
1000W
Suggested PSU
600 W
1400 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
6.8
N/A