Mobility Radeon HD 3850 X2 and Radeon HD 3870 - video card comparison
Mobility Radeon HD 3850 X2
Radeon HD 3870
Architecture
RV6xx (2007−2010)
TeraScale (2005−2013)
GPU code name
M88 CF
RV670
Market segment
Laptop
Desktop
Release date
June 2008
November 2007
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
-
1x 6-pin
Core clock speed
580 MHz
777 MHz
Floating-point performance
2x 371.2 gflops
497.3 gflops
Manufacturing process technology
55 nm
55 nm
Number of transistors
666 million
666 million
Pipelines / CUDA cores
640
320
Power consumption (TDP)
110 Watt
106 Watt
Texture fill rate
9.280
12.43
Memory type
GDDR3
GDDR4
Maximum RAM amount
512 MB
512 MB
Memory bus width
256 Bit
256 Bit
Memory clock speed
750 MHz
2252 MHz
Memory bandwidth
48 GB/s
72.06 GB/s
Shared memory
-
-
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
10.1 (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