Mobility Radeon HD 4870 X2 and Mobility Radeon HD 5870 - video card comparison
Mobility Radeon HD 4870 X2
Mobility Radeon HD 5870
Architecture
Terascale 1 (2008−2010)
Terascale 2 (2009−2015)
GPU code name
M98-XT
Broadway-XT
Market segment
Laptop
Laptop
Release date
January 2009
January 2010
Interface
PCIe 2.0 x16
MXM-B (3.0)
Core clock speed
550 MHz
700 MHz
Floating-point performance
2x 880.0 gflops
1,120.0 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
956 million
1,040 million
Pipelines / CUDA cores
1600
800
Power consumption (TDP)
-
50 Watt
Texture fill rate
22.00
28.00
Memory type
GDDR3, GDDR5
DDR3, GDDR3, GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
888 MHz
1000 MHz
Memory bandwidth
89.6 GB/s
64 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
10.1 (10_1)
11.2 (11_0)
OpenCL
1.1
1.2
OpenGL
3.3
4.4
Shader Model
4.1
5.0
Vulkan
N/A
N/A