GeForce GT 620M and Radeon HD 6770 Green Edition - video card comparison
GeForce GT 620M
Radeon HD 6770 Green Edition
Architecture
Fermi (2010−2014)
TeraScale 2 (2009−2015)
GPU code name
N13P-GLP / N13M-GS
Juniper
Market segment
Laptop
Desktop
Release date
March 2012
April 2013
Bus support
PCI Express 2.0
-
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Boost clock speed
715 MHz
-
Core clock speed
Up to 625 MHz
700 MHz
CUDA cores
96
-
Floating-point performance
253.4 gflops
1,008 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
585 million
1,040 million
Pipelines / CUDA cores
96
720
Power consumption (TDP)
15 Watt
86 Watt
Texture fill rate
Up to 10.0 billion/sec
25.20
Memory type
DDR3
GDDR3
Maximum RAM amount
1 GB
2 GB
Memory bus width
Up to 128bit
128 Bit
Memory clock speed
1800 MHz
1334 MHz
Memory bandwidth
Up to 28.8 GB/s
21.34 GB/s
Shared memory
-
-
Display Connectors
No outputs
2x DVI, 1x HDMI, 2x mini-DisplayPort
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
11.2 (11_0)
CUDA
+
-
OpenCL
1.1
1.2
OpenGL
4.5
4.4
Shader Model
5.1
5.0
Vulkan
N/A
N/A
3D Blu-Ray
+
-
Optimus
+
-