AMD Radeon RX 6600 vs AMD Radeon RX 7400
GPU · Specs Compare
Graphics Card
Release Date
Oct 2021
Aug 2025
Generation
Navi II
Navi III
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 4.0 x8
Clock Speeds
Base Clock
1626 MHz
1452 MHz
Boost Clock
2491 MHz
2300 MHz
Memory Clock
1750 MHz
2250 MHz
Memory
Memory Size
8GB
8GB
Memory Type
GDDR6
GDDR6
Memory Bus
128bit
128bit
Bandwidth
224.0GB/s
288.0GB/s
Render Config
Compute Units
28
28
Shading Units
1792
1792
TMUs
112
112
ROPs
64
64
RT Cores
28
28
L1 Cache
128 KB per Array
128 KB per Array
L2 Cache
2 MB
2 MB
L3 Cache
32 MB
64 MB
Theoretical Performance
Pixel Rate
159.4 GPixel/s
147.2 GPixel/s
Texture Rate
279.0 GTexel/s
257.6 GTexel/s
FP16 (half)
17.86 TFLOPS
32.97 TFLOPS
FP32 (float)
8.928 TFLOPS
16.49 TFLOPS
FP64 (double)
558.0 GFLOPS
515.2 GFLOPS
Graphics Processor
GPU Name
Navi 23
Navi 33
GPU Variant
Navi 23 XL(215-130000016)
Navi 33
Architecture
RDNA 2.0
RDNA 3.0
Foundry
TSMC
TSMC
Process Size
7 nm
6 nm
Transistors
11.06 billion
13.3 billion
Die Size
237 mm²
204 mm²
Board Design
TDP
132W
43W
Suggested PSU
300 W
200 W
Outputs
1x HDMI 2.13x DisplayPort 1.4a
1x HDMI 2.1a3x DisplayPort 2.1
Power Connectors
1x 8-pin
1x 6-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.1
2.2
Vulkan
1.3
1.3
Shader Model
6.5
6.8
▲ Specs Compare
Data sourced from official specifications and benchmark tests.