Radeon HD 3850 X2 and GeForce 720M - video card comparison
Radeon HD 3850 X2
GeForce 720M
Architecture
TeraScale (2005−2013)
Fermi 2.0 (2010−2014)
GPU code name
RV670
GF117
Market segment
Desktop
Desktop
Release date
April 2008
April 2013
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Core clock speed
669 MHz
625 MHz
Floating-point performance
2x 428.2 gflops
240.0 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
666 million
585 million
Pipelines / CUDA cores
320
96
Power consumption (TDP)
140 Watt
33 Watt
Texture fill rate
10.70
10.00
Memory type
GDDR3
DDR3
Maximum RAM amount
512 MB
2 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1656 MHz
1600 MHz
Memory bandwidth
52.99 GB/s
12.8 GB/s
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
12 (11_0)
CUDA
-
2.1
OpenCL
N/A
1.1
OpenGL
3.3
4.6
Shader Model
4.1
5.1
Vulkan
N/A
N/A