Radeon HD 7870M and Radeon HD 8870M - video card comparison
Passmark - benchmark score Radeon HD 7870M vs Radeon HD 8870M
Radeon HD 7870M
1552
Radeon HD 8870M
1687
Radeon HD 7870M
Radeon HD 8870M
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Heathrow XT
Venus
Market segment
Laptop
Laptop
Release date
April 2012
December 2012
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Boost clock speed
-
775 MHz
Core clock speed
800 MHz
725 MHz
Floating-point performance
1,024 gflops
992.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
1,500 million
Pipelines / CUDA cores
640
640
Power consumption (TDP)
45 Watt
-
Texture fill rate
32.00
31.00
Memory type
GDDR5
GDDR5, DDR3
Maximum RAM amount
2 GB
2 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4000 MHz
4500 MHz
Memory bandwidth
64 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