AMD Radeon RX 7400 vs AMD Radeon R9 390X
GPU Specs Compare
Graphics Card
Release Date
Aug 2025
Jun 2015
Generation
Navi III
Pirate Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
1452 MHz
-
Boost Clock
2300 MHz
-
Memory Clock
2250 MHz
1500 MHz
Memory
Memory Size
8GB
8GB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
512bit
Bandwidth
288.0GB/s
384.0GB/s
Render Config
Compute Units
28
44
Shading Units
1792
2816
TMUs
112
176
ROPs
64
64
RT Cores
28
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
1024 KB
L3 Cache
64 MB
-
Theoretical Performance
Pixel Rate
147.2 GPixel/s
67.20 GPixel/s
Texture Rate
257.6 GTexel/s
184.8 GTexel/s
FP16 (half)
32.97 TFLOPS
-
FP32 (float)
16.49 TFLOPS
5.914 TFLOPS
FP64 (double)
515.2 GFLOPS
739.2 GFLOPS
Graphics Processor
GPU Name
Navi 33
Grenada
GPU Variant
Navi 33
Grenada XT(215-0880004)
Architecture
RDNA 3.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
6 nm
28 nm
Transistors
13.3 billion
6.2 billion
Die Size
204 mm²
438 mm²
Board Design
TDP
43W
275W
Suggested PSU
200 W
600 W
Outputs
1x HDMI 2.1a3x DisplayPort 2.1
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 6-pin
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.2
2.0
Vulkan
1.3
1.2
Shader Model
6.8
6.3