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Home » Motherboard
Biostar TZ77XE4 Motherboard
Author: Gabriel Torres 20,861 views
Type: First Look Last Updated: March 28, 2012
Page: 2 of 9
Slots

The Biostar TZ77XE4 comes with two PCI Express 3.0/2.0 x16 slots, one PCI Express 2.0 x16 slot, one PCI Express 2.0 x1 slot, and two standard PCI slots.

The two PCI Express 3.0/2.0 x16 slots are controlled by the CPU, with the first slot working at x16 when only one video card is installed, and with both working at x8 when two video cards are installed. Since these slots are controlled by the CPU, they will offer PCI Express 2.0 bandwidth (8 GB/s at x16) when a “Sandy Bridge” CPU is installed, but PCI Express 3.0 bandwidth (16 GB/s at x16) when an “Ivy Bridge” CPU is used.

The third PCI Express x16 slot is controlled by the chipset and always works at x4, offering PCI Express 2.0 bandwidth. If you want to install a dual-slot video card in this slot, you will need to use a computer case with at least eight expansion slots. (Computer cases usually have seven expansion slots.)

The PCI Express x16 slots support both SLI and CrossFireX technologies.

Biostar TZ77XE4 motherboard
click to enlarge
Figure 2: Slots

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