Radeon HD 4830 and GeForce GTX 660M Mac Edition - video card comparison
Radeon HD 4830
GeForce GTX 660M Mac Edition
Architecture
TeraScale (2005−2013)
Kepler (2012−2018)
GPU code name
RV770
GK107
Market segment
Desktop
Desktop
Release date
October 2008
April 2013
Interface
PCIe 2.0 x16
MXM-B (3.0)
Supplementary power connectors
1x 6-pin
None
Core clock speed
575 MHz
950 MHz
Floating-point performance
736.0 gflops
729.6 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
956 million
1,270 million
Pipelines / CUDA cores
640
384
Power consumption (TDP)
95 Watt
50 Watt
Texture fill rate
18.40
30.40
Memory type
GDDR3
GDDR5
Maximum RAM amount
512 MB
512 MB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1800 MHz
5000 MHz
Memory bandwidth
57.6 GB/s
80 GB/s
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
12 (11_0)
CUDA
-
3.0
OpenCL
1.1
1.2
OpenGL
3.3
4.6
Shader Model
4.1
5.1
Vulkan
N/A
1.1.126