Cov naming conventions ntawm USB interface qauv yog complex thiab koom nrog ntau lub npe hloov, uas yuav yooj yim confuse cov neeg siv. Lub sijhawm no peb yuav ua cov ncauj lus kom ntxaws sib piv ntawm USB 3.1 Gen 2 thiab USB 3.2 Gen 1
1, Technical Background thiab naming txoj cai
Ua ntej, peb yuav tsum nkag siab txog cov ntaub ntawv tseem ceeb - ob qho no tuaj txog li cas.
1,) USB 3.1 Gen 2
Thawj lub npe hu ua USB 3.1, nws yog ib qho kev hloov kho tshiab uas tau tsim los ntawm USB-IF (USB Implementers Forum) hauv 2013. Vim yog kev hloov pauv ntawm USB naming cov cai, USB 3.1 Gen 2 tau hloov npe ua USB 3.2 Gen 2 (qhov thib ob tiam version ntawm USB 3.2). Qhov tseeb, USB 3.1 Gen 2=USB 3.2 Gen 2.
2,) USB 3.2 Gen 1
Thawj lub npe hu ua USB 3.0, nws yog USB 3.0 tus qauv tsim tawm xyoo 2008. Tom qab hloov npe ntawm USB-IF hauv xyoo 2017, USB 3.0 tau hloov npe ua USB 3.2 Gen 1. Qhov tseeb, USB 3.2 Gen 1=USB 3.0.
2, Qhov tseem ceeb parameter sib piv.
| Feature | USB 3.1 Gen 2 (= USB 3.2 Gen 2) | USB 3.2 Gen 1 (= USB 3.0) |
|---|---|---|
| Theoretical Hloov Rate | 10 Gbps (1.25 GB / s) ceev | 5 Gbps (625 MB/s) |
| Siv tau Bandwidth | ~ 7.2 Gbps (qhov tseeb ~ 900 MB / s) | ~ 4.8 Gbps (qhov tseeb ~ 600 MB / s) |
| Hom interface | Txhawb Hom-A/B/C, nrog Hom-C raws li lub ntsiab | Txhawb Hom-A/B/C, nrog Hom-C raws li lub ntsiab |
| Kev sib haum xeeb | Rov qab tau tshaj USB 2.0 / USB 3.0 / USB 3.1 Gen 1 | Rov qab tau tshaj USB 2.0 |
| Kev xa khoom muaj peev xwm | Txog li 100 W (yuav tsum muaj hom -C cable thiab raws tu qauv txhawb nqa) | Mus txog 4.5 W (tus qauv USB 3.0) |
| Daim ntawv thov Scenario | Siab- hloov cov ntaub ntawv ceev (piv txwv li, 4K video, thaub qab cov ntaub ntawv loj) | Txhua hnub peripheral kev twb kev txuas (xws li, USB drives, sab nraud hard drives) |
3, Yuav ua li cas paub qhov txawv?
1,) Saib xyuas cov khoom
USB 3.1 Gen 2: sau tias "SuperSpeed+" lossis "10 Gbps".
USB 3.2 Gen 1: Sau npe li "SuperSpeed" lossis "5 Gbps".
2,) Interface xim (qee manufacturers)
Hom -C interface:
Xiav xiav=USB 3.2 Gen 2 (10 Gbps)
Liab =USB 3.2 Gen 2x2 (20 Gbps)
Hom -A/B interface:
Blue =USB 3.2 Gen 1 (5 Gbps)
3,) Cov cuab yeej ntsuas kev ua haujlwm
Siv cov cuab yeej xws li CrystalDiskMark los ntsuas qhov kev nyeem ntawv thiab sau ntawv ceev. Yog tias nws mus txog 900 MB / s, nws yog USB 3.1 Gen 2; Yog tias nws mus txog 600 MB / s, nws yog USB 3.2 Gen 1.
