AMD Radeon RX 6600 vs AMD Radeon R9 M395X Mac Edition
GPU · Specs Compare
Graphics Card
Release Date
Oct 2021
May 2015
Generation
Navi II
Crystal System
Type
Desktop
Mobile
Bus Interface
PCIe 4.0 x8
MXM-B (3.0)
Clock Speeds
Base Clock
1626 MHz
—
Boost Clock
2491 MHz
—
Memory Clock
1750 MHz
1365 MHz
Memory
Memory Size
8GB
4GB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
256bit
Bandwidth
224.0GB/s
174.7GB/s
Render Config
Compute Units
28
32
Shading Units
1792
2048
TMUs
112
128
ROPs
64
32
RT Cores
28
—
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
512 KB
L3 Cache
32 MB
—
Theoretical Performance
Pixel Rate
159.4 GPixel/s
29.09 GPixel/s
Texture Rate
279.0 GTexel/s
116.4 GTexel/s
FP16 (half)
17.86 TFLOPS
3.723 TFLOPS
FP32 (float)
8.928 TFLOPS
3.723 TFLOPS
FP64 (double)
558.0 GFLOPS
232.7 GFLOPS
Graphics Processor
GPU Name
Navi 23
Amethyst
GPU Variant
Navi 23 XL(215-130000016)
Amethyst XT
Architecture
RDNA 2.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
11.06 billion
5 billion
Die Size
237 mm²
366 mm²
Board Design
TDP
132W
250W
Suggested PSU
300 W
—
Outputs
1x HDMI 2.13x DisplayPort 1.4a
No outputs
Power Connectors
1x 8-pin
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.0
Vulkan
1.3
1.2
Shader Model
6.5
6.3
▲ Specs Compare
Data sourced from official specifications and benchmark tests.