EVGA Z490 FTW, Руководство пользователя

Страница: 21 / 163

EVGA Z490 FTW (122-CL-E497)
- 21 -
* There are two numeric references for PCI-Express: one is mechanical (the actual slot-
length footprint across the motherboard), while the second is electrical (the number of
PCIe lanes available to the slot from the CPU, PCH, or both).
PCI Express was designed with a universal architecture; you can install x1 cards,
such as sound cards or USB controllers, into an x16 slot. Many types of cards
can use various numbers of PCIe lanes; similarly, some applications might only
use certain parts of a card (e.g. compute apps), requiring only a single PCIe lane
to accomplish its task without affecting performance. This is why there are x16
mechanical slots with an x1 electrical PCIe lane. Using the entire length of a
PCIe slot is unnecessary, nor does it cause an adverse effect to use a shorter
form-factor bus card in a slot that physically can hold a larger form-factor bus
card.