AMD Radeon RX 6600S vs NVIDIA GeForce GTX 660 Rev. 2
GPU Specs Compare
Graphics Card
Release Date
Jan 2022
Sep 2014
Generation
Mobility Radeon
GeForce 600
Type
Mobile
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
1700 MHz
980 MHz
Boost Clock
2000 MHz
1032 MHz
Memory Clock
1750 MHz
1502 MHz
Memory
Memory Size
4GB
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
128.0 GPixel/s
20.64 GPixel/s
Texture Rate
224.0 GTexel/s
82.56 GTexel/s
FP16 (half)
14.34 TFLOPS
-
FP32 (float)
7.168 TFLOPS
1.981 TFLOPS
FP64 (double)
448.0 GFLOPS
82.56 GFLOPS
Graphics Processor
GPU Name
Navi 23
GK104
Architecture
RDNA 2.0
Kepler
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
11.06 billion
3.54 billion
Die Size
237 mm²
294 mm²
Board Design
TDP
80W
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
7,700
-
3DMark Time Spy Extreme
3,389
-