Radeon HD 7660D and Radeon HD 4580 - video card comparison
Radeon HD 7660D
Radeon HD 4580
Architecture
Terascale 3 (2010−2013)
TeraScale (2005−2013)
GPU code name
Trinity
RV635
Market segment
Desktop
Desktop
Release date
September 2012
November 2011
Interface
IGP
PCIe 2.0 x16
Supplementary power connectors
-
None
Boost clock speed
800 MHz
-
Core clock speed
633 MHz
796 MHz
Floating-point performance
-
191.04 gflops
Manufacturing process technology
32 nm
55 nm
Number of transistors
1,303 million
378 million
Pipelines / CUDA cores
384
120
Power consumption (TDP)
100 Watt
65 Watt
Texture fill rate
19.20
6.368
Memory type
System Shared
GDDR3
Maximum RAM amount
System Shared
512 MB
Memory bus width
System Shared
128 Bit
Memory clock speed
System Shared
1386 MHz
Memory bandwidth
-
22.18 GB/s
Shared memory
+
-
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
11.2 (11_0)
10.1 (10_1)
OpenCL
1.2
N/A
OpenGL
4.4
3.3
Shader Model
5.0
4.1
Vulkan
N/A
N/A