Mobility Radeon HD 4830 and Mobility Radeon HD 3870 - video card comparison
Mobility Radeon HD 4830
Mobility Radeon HD 3870
Architecture
Terascale 1 (2008−2010)
RV6xx (2007−2010)
GPU code name
M97
M88-XT
Market segment
Laptop
Laptop
Release date
March 2009
March 2008
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Core clock speed
550 MHz
660 MHz
Floating-point performance
704.0 gflops
422.4 gflops
Manufacturing process technology
40 nm
55 nm
Number of transistors
826 million
666 million
Pipelines / CUDA cores
640
320
Power consumption (TDP)
-
55 Watt
Texture fill rate
17.60
10.56
Memory type
GDDR3, DDR3
GDDR3
Maximum RAM amount
1 GB
512 MB
Memory bus width
128 Bit
256 Bit
Memory clock speed
700 MHz
850 MHz
Memory bandwidth
44.8 GB/s
54.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
10.1 (10_1)
10.1 (10_1)
OpenCL
1.1
N/A
OpenGL
3.3
3.3
Shader Model
4.1
4.1
Vulkan
N/A
N/A