GeForce GTX 680M and Radeon 660M - video card comparison
Passmark - benchmark score GeForce GTX 680M vs Radeon 660M
GeForce GTX 680M
3312
Radeon 660M
6474
GeForce GTX 680M
Radeon 660M
Architecture
Kepler (2012−2018)
RDNA 2 (2020−2022)
GPU code name
N13E-GTX
RDNA 2 Rembrandt
Market segment
Laptop
Laptop
Release date
June 2012
January 2022
Bus support
PCI Express 3.0
-
Interface
MXM-B (3.0)
PCIe 4.0 x8
Supplementary power connectors
None
None
SLI options
+
-
Boost clock speed
758 MHz
1900 MHz
Core clock speed
720 MHz
-
CUDA cores
1344
-
Floating-point performance
2,038 gflops
-
Manufacturing process technology
28 nm
6 nm
Number of transistors
3,540 million
13,100 million
Pipelines / CUDA cores
1344
384
Power consumption (TDP)
100 Watt
45 Watt
Texture fill rate
80.6 billion/sec
45.60
Memory type
GDDR5
System Shared
Maximum RAM amount
4 GB
System Shared
Memory bus width
256 Bit
System Shared
Memory clock speed
1800 MHz
System Shared
Memory bandwidth
115.2 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 API
12 (12_1)
CUDA
+
-
OpenCL
1.1
2.0
OpenGL
4.5
4.6
Shader Model
5.1
6.5
Vulkan
1.1.126
1.2
Optimus
+
-