AMD Radeon RX 7400 vs AMD Radeon R9 280
GPU Specs Compare
Graphics Card
Release Date
Aug 2025
Mar 2014
Generation
Navi III
Volcanic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
1452 MHz
827 MHz
Boost Clock
2300 MHz
933 MHz
Memory Clock
2250 MHz
1250 MHz
Memory
Memory Size
8GB
3GB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
384bit
Bandwidth
288.0GB/s
240.0GB/s
Render Config
Compute Units
28
28
Shading Units
1792
1792
TMUs
112
112
ROPs
64
32
RT Cores
28
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
768 KB
L3 Cache
64 MB
-
Theoretical Performance
Pixel Rate
147.2 GPixel/s
29.86 GPixel/s
Texture Rate
257.6 GTexel/s
104.5 GTexel/s
FP16 (half)
32.97 TFLOPS
-
FP32 (float)
16.49 TFLOPS
3.344 TFLOPS
FP64 (double)
515.2 GFLOPS
836.0 GFLOPS
Graphics Processor
GPU Name
Navi 33
Tahiti
GPU Variant
Navi 33
Tahiti PRO3(215-0821330)
Architecture
RDNA 3.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
6 nm
28 nm
Transistors
13.3 billion
4.313 billion
Die Size
204 mm²
352 mm²
Board Design
TDP
43W
200W
Suggested PSU
200 W
550 W
Outputs
1x HDMI 2.1a3x DisplayPort 2.1
1x DVI2x 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 (11_1)
OpenGL
4.6
4.6
OpenCL
2.2
1.2
Vulkan
1.3
1.2
Shader Model
6.8
5.1