i can use sl3BF with this card
 

Radeon hd 5850

- HD 5850 1Go GDDR5 HDMI limited edition - Shader 5.4, DirectX 11, Dual DVI + HDMI + Display port, PCI Xpress 2.0
- ATI Eyefinity technology with support for up to three displays
- ATI Stream technology
- Designed for DirectCompute 5.0 and OpenCL
- Accelerated Video Transcoding (AVT)
- Supports OpenGL 3.1
- ATI CrossFireX™ multi-GPU support for highly scalable performance
- ATI Avivo™ HD video and display technology
- Dynamic power management with ATI PowerPlay™ technology
- DUAL-DVI, DisplayPort, HDMI
- PCI Express® 2.0 support
- Chipset ATI Radeon HD5850™
- Core Clock: 725MHz
- Memory Clock: 4000MHz

more info................

yes you can..............

but the time for 1 phone.?

max. 6,5days nonstop working