本帖最後由 harryytm 於 2019-6-28 02:58 編輯
瓶頸應該係硬碟速度, 中的 usb 3.1 Gen 2, 都係以 SSD 做測試, 硬碟去唔到呢個速度.... ...
hkpop 發表於 2019-6-28 01:44 
我有一個問題，Z77原生有4個USB 3.0，其實係每個Port有5Gbps，還是4個Port Share 5Gbps？
而我塊板係用Z77其中一個USB 3.0 Port用個Hub 1開4個Port成為後置4個USB Port，即係我而家2個盒係Share緊Z77其中一個USB 3.0 Port嘅5Gbps？
答案係 z77 個 xHCI 有 5Gbps bandwidth，最多可以出到 4 個 Port，而無論之後有幾多個 Port都係共享嗰 5Gbps。
Universal Serial Bus (USB) Controllers
The PCH contains up to two Enhanced Host Controller Interface (EHCI) host controllers that support USB high-speed signaling. High-speed USB 2.0 allows data transfers up to 480 Mb/s, which is up to 40 times faster than full-speed USB. The PCH supports up to fourteen USB 2.0 ports. All ports are high-speed, full-speed, and low-speed capable. The PCH also contains an integrated eXtensible Host Controller Interface (xHCI) host controller that supports up to four USB 3.0 ports. This controller allows data transfers up to 5 Gb/s. The controller supports SuperSpeed (SS), high-speed (HS), full-speed (FS), and low-speed (LS) traffic on the bus. See Section 1.3 for details on SKU feature availability.
Source: https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/7-series-chipset-pch-datasheet.pdf - Page 50 |
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發表於 2019-6-28 01:11
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