Mobility Radeon HD 5870 and Radeon HD 8770M - video card comparison
Mobility Radeon HD 5870
Radeon HD 8770M
Architecture
Terascale 2 (2009−2015)
GCN (2011−2017)
GPU code name
Broadway-XT
Mars
Market segment
Laptop
Laptop
Release date
January 2010
November 2012
Interface
MXM-B (3.0)
PCIe 3.0 x8
Boost clock speed
-
825 MHz
Core clock speed
700 MHz
775 MHz
Floating-point performance
1,120.0 gflops
633.6 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,040 million
950 million
Pipelines / CUDA cores
800
384
Power consumption (TDP)
50 Watt
-
Texture fill rate
28.00
19.80
Memory type
DDR3, GDDR3, GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1000 MHz
4500 MHz
Memory bandwidth
64 GB/s
72 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
11.2 (11_0)
12 (11_1)
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
1.2.131