NVIDIA GeForce GTX 660 vs AMD Radeon RX 6800M
GPU · Specs Compare
Graphics Card
Release Date
Sep 2012
May 2021
Generation
GeForce 600
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
980 MHz
2116 MHz
Boost Clock
1032 MHz
2390 MHz
Memory Clock
1502 MHz
2000 MHz
Memory
Memory Size
2GB
12GB
Memory Type
GDDR5
GDDR6
Memory Bus
192bit
192bit
Bandwidth
144.2GB/s
384.0GB/s
Render Config
Shading Units
960
2560
TMUs
80
160
ROPs
24
64
L1 Cache
16 KB (per SMX)
128 KB per Array
L2 Cache
384 KB
3 MB
Compute Units
—
40
RT Cores
—
40
L3 Cache
—
96 MB
Theoretical Performance
Pixel Rate
20.64 GPixel/s
153.0 GPixel/s
Texture Rate
82.56 GTexel/s
382.4 GTexel/s
FP32 (float)
1.981 TFLOPS
12.24 TFLOPS
FP64 (double)
82.56 GFLOPS
764.8 GFLOPS
FP16 (half)
—
24.47 TFLOPS
Graphics Processor
GPU Name
GK106
Navi 22
GPU Variant
GK106-400-A1
Navi 22 XTM
Architecture
Kepler
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
7 nm
Transistors
2.54 billion
17.2 billion
Die Size
221 mm²
335 mm²
Board Design
TDP
140W
145W
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
11,498
3DMark Time Spy Extreme
260
5,418
OctaneBench
27
—
Blender
111
1,568
3DMark Speed Way
—
2,096
▲ Specs Compare
Data sourced from official specifications and benchmark tests.