AMD Radeon RX 6600 vs AMD Radeon RX 9070 XT
GPU Specs Compare
Graphics Card
Release Date
Oct 2021
Mar 2025
Generation
Navi II
Navi IV
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 5.0 x16
Clock Speeds
Base Clock
1626 MHz
1660 MHz
Boost Clock
2491 MHz
2970 MHz
Memory Clock
1750 MHz
2518 MHz
Memory
Memory Size
8GB
16GB
Memory Type
GDDR6
GDDR6
Memory Bus
128bit
256bit
Bandwidth
224.0GB/s
644.6GB/s
Render Config
Compute Units
28
64
Shading Units
1792
4096
TMUs
112
256
ROPs
64
128
RT Cores
28
64
L1 Cache
128 KB per Array
128
L2 Cache
2 MB
8 MB
L3 Cache
32 MB
64 MB
Tensor Cores
-
128
Theoretical Performance
Pixel Rate
159.4 GPixel/s
380.2 GPixel/s
Texture Rate
279.0 GTexel/s
760.3 GTexel/s
FP16 (half)
17.86 TFLOPS
97.32 TFLOPS
FP32 (float)
8.928 TFLOPS
48.66 TFLOPS
FP64 (double)
558.0 GFLOPS
1.521 TFLOPS
Graphics Processor
GPU Name
Navi 23
Navi 48
GPU Variant
Navi 23 XL(215-130000016)
Navi 48 XTX
Architecture
RDNA 2.0
RDNA 4.0
Foundry
TSMC
TSMC
Process Size
7 nm
4 nm
Transistors
11.06 billion
53.9 billion
Die Size
237 mm²
357 mm²
Board Design
TDP
132W
304W
Suggested PSU
300 W
700 W
Outputs
1x HDMI 2.13x DisplayPort 1.4a
1x HDMI 2.1b3x DisplayPort 2.1a
Power Connectors
1x 8-pin
2x 8-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
1.4
Shader Model
6.5
6.8
📊 Benchmark
3DMark Time Spy
-
30,445
3DMark Time Spy Extreme
-
14,633
3DMark Speed Way
-
6,403