Radeon HD 7660G + HD 7670M Dual Graphics and GeForce GT 640M LE - video card comparison
Radeon HD 7660G + HD 7670M Dual Graphics
GeForce GT 640M LE
Architecture
Terascale 2 (2009−2015)
Fermi / Kepler (2012)
GPU code name
-
N13P-LP
Market segment
Laptop
Laptop
Release date
May 2012
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
-
PCIe 2.0 x16
Core clock speed
685 / 600 MHz
Up to 500 MHz
CUDA cores
-
Up to 384
Floating-point performance
-
384.0 gflops
Manufacturing process technology
32 nm
28 nm
Number of transistors
-
585 million
Pipelines / CUDA cores
862
384
Power consumption (TDP)
-
20 Watt
Texture fill rate
-
Up to 16.0 billion/sec
Memory type
DDR3,GDDR5
DDR3\DDR5
Maximum RAM amount
-
2 GB
Memory bus width
128 Bit
128bit
Memory clock speed
1800 MHz
1800 - 4000 MHz
Memory bandwidth
-
Up to 28.8 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
11
12 API
CUDA
-
+
OpenCL
-
1.1
OpenGL
-
4.5
Shader Model
-
5.1
Vulkan
-
N/A
3D Blu-Ray
-
+
Optimus
-
+