Biostar TP45 HP Setup Manual - Page 14
PEX16_1: PCI-Express Gen2 x16x16/CrossFire x8 Speed Slot, PEX16_2: PCI-Express Gen2 x16NC/CrossFire
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Motherboard Manual PEX16_1: PCI-Express Gen2 x16(x16/CrossFire x8 Speed) Slot - PCI-Express 2.0 compliant. - Maximum theoretical realized bandwidth of 8GB/s(4GB/s CrossFire) simultaneously per direction, for an aggregate of 16GB/s(8GB/s CrossFire) totally. - PEX16_1 slot is reserved for graphics or video cards. The design of this motherboard supports dual PCI-Express graphics cards using CrossFire technology with multiple displays. When using CrossFire, this slot is master and runs with x8 speed. - To configure for CrossFire, please refer to the instructions of configuring JPE1~JPE9. PEX16_2: PCI-Express Gen2 x16(NC/CrossFire x8 Speed) Slot - PCI-Express 2.0 compliant. - Maximum theoretical realized bandwidth of 4GB/s simultaneously per direction, for an aggregate of 8GB/s totally. - PEX16_2 slot is reserved for graphics or video cards. The design of this motherboard supports dual PCI-Express graphics cards using CrossFire technology with multiple displays. This slot is slave when using CrossFire. If PEX16_1 is set to x16 speed, then PEX16_2 would not be functional. PEX1_1/PEX1_2: PCI-Express x1 Slots - PCI-Express 1.0a compliant. - Data transfer bandwidth up to 250MB/s per direction; 500MB/s in total. - PCI-Express supports a raw bit-rate of 2.5Gb/s on the data pins. - 2X bandwidth over the traditional PCI architecture. PEX1_2 PEX16_1 PEX1_1 PEX16_2 12
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