Radeon HD 7870M and Radeon R7 Graphics - video card comparison
Radeon HD 7870M
Radeon R7 Graphics
Architecture
GCN (2011−2017)
GCN 2.0 (2013−2017)
GPU code name
Heathrow XT
Spectre
Market segment
Laptop
Desktop
Release date
April 2012
January 2014
Interface
PCIe 3.0 x16
IGP
Boost clock speed
-
980 MHz
Core clock speed
800 MHz
686 MHz
Floating-point performance
1,024 gflops
526.8 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
2,410 million
Pipelines / CUDA cores
640
512
Power consumption (TDP)
45 Watt
15 Watt
Texture fill rate
32.00
31.36
Memory type
GDDR5
System Shared
Maximum RAM amount
2 GB
System Shared
Memory bus width
128 Bit
System Shared
Memory clock speed
4000 MHz
System Shared
Memory bandwidth
64 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_1)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.0
Vulkan
1.2.131
1.2.131