Asus sāk iespējot ierobežotu pcie gen 4.0 amd 400. sērijas mikroshēmojumu mātesplatēs - Asus

ASUS sāk iespējot ierobežotu PCIe Gen 4.0 AMD 400 sērijas mikroshēmojuma mātesplatēs



ASUS believes that PCI-Express gen 4.0 support on older socket AM4 motherboards based on the AMD 400-series chipset is technically possible, even if discouraged by AMD. The company's latest series of motherboard BIOS updates that expose PCIe Gen 4 toggle in the PCIe settings, does in fact enable PCIe gen 4.0 to all devices that are directly wired to the SoC. These would be the PCI-Express x16 slots meant for graphics, and one of the M.2 slots that has PCIe x4 wiring to the SoC. Below is a list of motherboards scored by Chinese tech publication MyDrivers, which details the extent of PCIe gen 4.0 support across a number of ASUS motherboards based on the X470 and B450 chipsets.

Acīmredzot AMD nav skaidri bloķējis PCIe gen 4.0 vecākām mikroshēmām. Tas mātesplašu ražotājiem tikai ieteica to neiespējot, jo jaunākās AMD 500 sērijas mātesplates ir veidotas atbilstoši jaunām PCB specifikācijām, kas nodrošina PCIe gen 4.0 signāla integritāti un stabilitāti. ASUS vēlas ļaut lietotājiem izlemt, vai viņi vēlas gen 4.0. Ja viņu mašīnas ir nestabilas, viņi BIOS iestatījumos var izvēlēties ierobežot PCIe versiju līdz gen 3.0. Cita starpā AMD specifikācijās par 500. sērijas mikroshēmojuma mātesplatēm ir paredzēts PCB ar vairāk nekā 4 slāņiem, lai nodrošinātu optimālu PCIe un atmiņas vadu. Daudzās no mātesplatēm ASUS sarakstā, piemēram, TUF B450 Pro Gaming, tiek izmantotas vienkāršas četrslāņu PCB. To test that PCIe gen 4.0 is actually enabled, MyDrivers used a PCIe gen 4.0 SSD on the M.2 slot that's directly wired to the SoC, on a TUF B450M Pro Gaming. Crystal DiskMark sequential read speeds of the drive are consistent with the same drive tested on an X570 motherboard - with just over 5 GB/s reads. These speeds are impossible on gen 3.0 x4. In a separate article, MyDrivers reports that AMD isn't too happy with ASUS marketing PCIe gen 4.0 support on its 400-series motherboards, and is reportedly trying to block it in updates to the AGESA microcode. Our recommendation - if your updated ASUS 400-series motherboard is running PCIe gen 4.0, don't update its BIOS. Sources: MyDrivers (main story), MyDrivers (AMD's response)