Mobility Radeon HD 3870 and Mobility Radeon HD 3470 - video card comparison
Mobility Radeon HD 3870
Mobility Radeon HD 3470
Architecture
RV6xx (2007−2010)
RV6xx (2007−2010)
GPU code name
M88-XT
M82-XT
Market segment
Laptop
Laptop
Release date
March 2008
January 2007
Interface
PCIe 2.0 x16
MXM-II
Core clock speed
660 MHz
680 MHz
Floating-point performance
422.4 gflops
54.4 gflops
Manufacturing process technology
55 nm
55 nm
Number of transistors
666 million
181 million
Pipelines / CUDA cores
320
40
Power consumption (TDP)
55 Watt
12 Watt
Texture fill rate
10.56
2.720
Memory type
GDDR3
DDR2/GDDR3
Maximum RAM amount
512 MB
256 MB
Memory bus width
256 Bit
64 Bit
Memory clock speed
850 MHz
800 MHz
Memory bandwidth
54.4 GB/s
6.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
10.1 (10_1)
10.1
OpenCL
N/A
N/A
OpenGL
3.3
3.3
Shader Model
4.1
4.1
Vulkan
N/A
N/A