AMD Radeon RX 6600M vs NVIDIA GeForce GTX 660
GPU Specs Compare
Graphics Card
Release Date
May 2021
Sep 2012
Generation
Mobility Radeon
GeForce 600
Type
Mobile
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
2068 MHz
980 MHz
Boost Clock
2416 MHz
1032 MHz
Memory Clock
1750 MHz
1502 MHz
Memory
Memory Size
8GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
192bit
Bandwidth
224.0GB/s
144.2GB/s
Render Config
Compute Units
28
-
Shading Units
1792
960
TMUs
112
80
ROPs
64
24
RT Cores
28
-
L1 Cache
128 KB per Array
16 KB (per SMX)
L2 Cache
2 MB
384 KB
L3 Cache
32 MB
-
Theoretical Performance
Pixel Rate
154.6 GPixel/s
20.64 GPixel/s
Texture Rate
270.6 GTexel/s
82.56 GTexel/s
FP16 (half)
17.32 TFLOPS
-
FP32 (float)
8.659 TFLOPS
1.981 TFLOPS
FP64 (double)
541.2 GFLOPS
82.56 GFLOPS
Graphics Processor
GPU Name
Navi 23
GK106
Architecture
RDNA 2.0
Kepler
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
11.06 billion
2.54 billion
Die Size
237 mm²
221 mm²
GPU Variant
-
GK106-400-A1
Board Design
TDP
100W
140W
Outputs
No outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
1x 6-pin
Suggested PSU
-
300 W
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
2.1
3.0
Vulkan
1.3
1.1
Shader Model
6.5
5.1
CUDA
-
3.0
📊 Benchmark
3DMark Time Spy
-
1,194
3DMark Time Spy Extreme
-
260
OctaneBench
-
27
Blender
-
111