No no es PCI express,
esta son las especificaciones :
Performance
GPU NVIDIA® GeForce® 8400 GS
Core Clock 567MHz
Shader Clock 1400MHz
Shader Model 4.0
Texture Fill Rate 4.5 Billion/sec.
Stream Processors 16
Memory
Video Memory 512MB
Memory Type DDR2
Memory Data Rate 666MHz
Memory Interface 64-bit
Memory Bandwidth 5.3GB/sec.
Connections
Bus Type PCI
Display Connectors Dual-Link DVI-I, VGA, TV Out
RAMDACs Dual 400MHz
Multiple Monitor Support Yes
HDCP Capable Yes, Dual link (Requires other compatible components which are HDCP capable. Designed to meet the output protection management (HDCP) and security specifications of the Blu-ray Disc and HD DVD formats, allowing the playback of encrypted movie content on PCs when connected to HDCP-compliant displays)
HDMIâ„¢ Capable No
NVIDIA® SLI® Support No
Included In Box
> BFG NVIDIA® GeForce® 8400 GS 512MB graphics card
> Quick install guide
> Driver CD, which includes: NVIDIA ForceWare unified graphics drivers and Full installation manual .pdf
System Requirements
> 256MB of system memory
> CD or DVD-ROM drive
> 100MB of available hard disk drive space for basic driver installation
> Microsoft® Windows Vista™ or XP operating system (A system BIOS update may be required when using this graphics card in some motherboards with the Microsoft® Windows Vista™ operating system)
>
One vacant PCI 2.0 (or better) slot
> 300W system power supply
y aqui esta la pag
http://www.bfgtech.com/bfgr84512gsp.aspx
saludos
espero y me peudan ayudar