Radeon HD 4580 and Radeon HD 6970M Mac Edition - video card comparison
Radeon HD 4580
Radeon HD 6970M Mac Edition
Architecture
TeraScale (2005−2013)
TeraScale 2 (2009−2015)
GPU code name
RV635
Blackcomb
Market segment
Desktop
Desktop
Release date
November 2011
August 2011
Interface
PCIe 2.0 x16
MXM-B (3.0)
Supplementary power connectors
None
None
Core clock speed
796 MHz
680 MHz
Floating-point performance
191.04 gflops
1,305.6 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
378 million
1,700 million
Pipelines / CUDA cores
120
960
Power consumption (TDP)
65 Watt
75 Watt
Texture fill rate
6.368
32.64
Memory type
GDDR3
GDDR5
Maximum RAM amount
512 MB
2 GB
Memory bus width
128 Bit
256 Bit
Memory clock speed
1386 MHz
3600 MHz
Memory bandwidth
22.18 GB/s
115.2 GB/s
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
11.2 (11_0)
OpenCL
N/A
1.2
OpenGL
3.3
4.4
Shader Model
4.1
5.0
Vulkan
N/A
N/A