AMD Radeon Instinct MI355X vs AMD Radeon RX 7800 XT
GPU · Specs Compare
Graphics Card
Release Date
Jun 2025
Aug 2023
Generation
Radeon Instinct
Navi III
Type
Professional
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
1000 MHz
1295 MHz
Boost Clock
2400 MHz
2430 MHz
Memory Clock
2000 MHz
2438 MHz
Memory
Memory Size
288GB
16GB
Memory Type
HBM3e
GDDR6
Memory Bus
8192bit
256bit
Bandwidth
8.19TB/s
624.1GB/s
Render Config
Compute Units
256
60
Shading Units
16384
3840
TMUs
1024
240
ROPs
0
96
Tensor Cores
1216
—
L1 Cache
32 KB (per CU)
128 KB per Array
L2 Cache
32 MB
4 MB
L3 Cache
256 MB
64 MB
RT Cores
—
60
Theoretical Performance
Pixel Rate
0 MPixel/s
233.3 GPixel/s
Texture Rate
2457.6 GTexel/s
583.2 GTexel/s
FP16 (half)
78.64 TFLOPS
74.65 TFLOPS
FP32 (float)
78.64 TFLOPS
37.32 TFLOPS
FP64 (double)
39.32 TFLOPS
1166.4 GFLOPS
Graphics Processor
GPU Name
MI350 256CU
Navi 32
Architecture
CDNA 4.0
RDNA 3.0
Foundry
TSMC
TSMC
Process Size
3 nm
5 nm
Transistors
185 billion
28.1 billion
Die Size
Unknown
346 mm²
GPU Variant
—
Navi 32 XT(215-180000006)
Board Design
TDP
1400W
263W
Suggested PSU
1800 W
600 W
Outputs
No outputs
1x HDMI 2.1a3x DisplayPort 2.1
Power Connectors
None
2x 8-pin
Graphics Features
DirectX
N/A
12 Ultimate (12_2)
OpenGL
N/A
4.6
OpenCL
3.0
2.2
Vulkan
N/A
1.3
Shader Model
N/A
6.8
Benchmark
3DMark Time Spy
—
20,086
3DMark Time Spy Extreme
—
9,448
3DMark Speed Way
—
3,978
Shadow of the Tomb Raider 2160p
—
82
Cyberpunk 2077 2160p
—
38
Shadow of the Tomb Raider 1440p
—
158
Cyberpunk 2077 1440p
—
82
Shadow of the Tomb Raider 1080p
—
234
Cyberpunk 2077 1080p
—
126
GTA 5 2160p
—
140
GTA 5 1440p
—
140
GTA 5 1080p
—
190
Horizon Forbidden West 1080p
—
98
Horizon Forbidden West 1440p
—
81
Horizon Forbidden West 2160p
—
52
▲ Specs Compare
Data sourced from official specifications and benchmark tests.