Radeon HD 8870M and Radeon HD 8770M - video card comparison
Radeon HD 8870M
Radeon HD 8770M
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Venus
Mars
Market segment
Laptop
Laptop
Release date
December 2012
November 2012
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Boost clock speed
775 MHz
825 MHz
Core clock speed
725 MHz
775 MHz
Floating-point performance
992.0 gflops
633.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
950 million
Pipelines / CUDA cores
640
384
Texture fill rate
31.00
19.80
Memory type
GDDR5, DDR3
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4500 MHz
4500 MHz
Memory bandwidth
72 GB/s
72 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_1)
12 (11_1)
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
1.2.131