Radeon R7 Graphics and Radeon HD 3870 - video card comparison
Radeon R7 Graphics
Radeon HD 3870
Architecture
GCN 2.0 (2013−2017)
TeraScale (2005−2013)
GPU code name
Spectre
RV670
Market segment
Desktop
Desktop
Release date
January 2014
November 2007
Interface
IGP
PCIe 2.0 x16
Supplementary power connectors
-
1x 6-pin
Boost clock speed
980 MHz
-
Core clock speed
686 MHz
777 MHz
Floating-point performance
526.8 gflops
497.3 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
2,410 million
666 million
Pipelines / CUDA cores
512
320
Power consumption (TDP)
15 Watt
106 Watt
Texture fill rate
31.36
12.43
Memory type
System Shared
GDDR4
Maximum RAM amount
System Shared
512 MB
Memory bus width
System Shared
256 Bit
Memory clock speed
System Shared
2252 MHz
Memory bandwidth
-
72.06 GB/s
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
12 (12_0)
10.1 (10_1)
OpenCL
2.0
N/A
OpenGL
4.6
3.3
Shader Model
6.0
4.1
Vulkan
1.2.131
N/A