AMD Radeon R9 390 vs AMD Radeon Instinct MI355X
GPU Specs Compare
Graphics Card
Release Date
Jun 2015
Jun 2025
Generation
Pirate Islands
Radeon Instinct
Type
Desktop
Professional
Bus Interface
PCIe 3.0 x16
PCIe 5.0 x16
Clock Speeds
Memory Clock
1500 MHz
2000 MHz
Base Clock
-
1000 MHz
Boost Clock
-
2400 MHz
Memory
Memory Size
8GB
288GB
Memory Type
GDDR5
HBM3e
Memory Bus
512bit
8192bit
Bandwidth
384.0GB/s
8.19TB/s
Render Config
Compute Units
40
256
Shading Units
2560
16384
TMUs
160
1024
ROPs
64
0
L1 Cache
16 KB (per CU)
32 KB (per CU)
L2 Cache
1024 KB
32 MB
Tensor Cores
-
1216
L3 Cache
-
256 MB
Theoretical Performance
Pixel Rate
64.00 GPixel/s
0 MPixel/s
Texture Rate
160.0 GTexel/s
2457.6 GTexel/s
FP32 (float)
5.120 TFLOPS
78.64 TFLOPS
FP64 (double)
640.0 GFLOPS
39.32 TFLOPS
FP16 (half)
-
78.64 TFLOPS
Graphics Processor
GPU Name
Grenada
MI350 256CU
GPU Variant
Grenada PRO(215-0880030)
-
Architecture
GCN 2.0
CDNA 4.0
Foundry
TSMC
TSMC
Process Size
28 nm
3 nm
Transistors
6.2 billion
185 billion
Die Size
438 mm²
Unknown
Board Design
TDP
275W
1400W
Suggested PSU
600 W
1800 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin + 1x 8-pin
None
Graphics Features
DirectX
12 (12_0)
N/A
OpenGL
4.6
N/A
OpenCL
2.0
3.0
Vulkan
1.2
N/A
Shader Model
6.3
N/A
📊 Benchmark
3DMark Time Spy
3,964
-
3DMark Time Spy Extreme
1,931
-