Radeon HD 4770 and Radeon HD 6630M Mac Edition - video card comparison
Radeon HD 4770
Radeon HD 6630M Mac Edition
Architecture
TeraScale (2005−2013)
TeraScale 2 (2009−2015)
GPU code name
RV740
Whistler
Market segment
Desktop
Desktop
Release date
April 2009
January 2011
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
-
Core clock speed
750 MHz
500 MHz
Floating-point performance
960.0 gflops
480.0 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
826 million
716 million
Pipelines / CUDA cores
640
480
Power consumption (TDP)
80 Watt
26 Watt
Texture fill rate
24.00
12.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
512 MB
256 MB
Memory bus width
128 Bit
64 Bit
Memory clock speed
3200 MHz
2400 MHz
Memory bandwidth
51.2 GB/s
19.2 GB/s
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
11.2 (11_0)
OpenCL
1.1
1.2
OpenGL
3.3
4.4
Shader Model
4.1
5.0
Vulkan
N/A
N/A