NVIDIA GeForce GTX 660 vs AMD Radeon RX 6800S
GPU · Specs Compare
Graphics Card
Release Date
Sep 2012
Jan 2022
Generation
GeForce 600
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x8
Clock Speeds
Base Clock
980 MHz
1800 MHz
Boost Clock
1032 MHz
2100 MHz
Memory Clock
1502 MHz
2000 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR6
Memory Bus
192bit
128bit
Bandwidth
144.2GB/s
256.0GB/s
Render Config
Shading Units
960
2048
TMUs
80
128
ROPs
24
64
L1 Cache
16 KB (per SMX)
128 KB per Array
L2 Cache
384 KB
2 MB
Compute Units
—
32
RT Cores
—
32
L3 Cache
—
32 MB
Theoretical Performance
Pixel Rate
20.64 GPixel/s
134.4 GPixel/s
Texture Rate
82.56 GTexel/s
268.8 GTexel/s
FP32 (float)
1.981 TFLOPS
8.602 TFLOPS
FP64 (double)
82.56 GFLOPS
537.6 GFLOPS
FP16 (half)
—
17.20 TFLOPS
Graphics Processor
GPU Name
GK106
Navi 23
GPU Variant
GK106-400-A1
—
Architecture
Kepler
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
7 nm
Transistors
2.54 billion
11.06 billion
Die Size
221 mm²
237 mm²
Board Design
TDP
140W
100W
Suggested PSU
300 W
—
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin
None
Graphics Features
DirectX
12 (11_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
2.1
Vulkan
1.1
1.3
CUDA
3.0
—
Shader Model
5.1
6.5
Benchmark
3DMark Time Spy
1,194
—
3DMark Time Spy Extreme
260
—
OctaneBench
27
—
Blender
111
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.