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  • S_x96x_S

    addikt

    válasz Petykemano #1109 üzenetére

    >Miért pakoltak volna az epyc io lapkájából funkciókat a chipsetbe és nem a ryzen io lapkájába?

    nem tudom a választ. talán a " downstream PCIe connectivity" a kulcsszó.

    mindenesetre az ASMedia-ának nem volt PCIe 4.0-ra hitelesített terméke - emiatt kellett ez a szükségmegoldás.

    plussz ez talán lehetőség lesz arra is, hogy
    - rendes sebességgel mennek a chipset-re kötött kütyük.
    - a "security" is jobb lesz.
    persze semmi se garantált - meglátjuk a teszteket.

    "
    This presents AMD with an opportunity to harden it against vulnerabilities, and have greater control over pricing, not to mention overcoming key design shortfalls of "Promontory," such as downstream PCIe connectivity.
    This flies in the face of speculation that AMD would discontinue ASMedia's supply of chipset, especially in the wake of the "Chimera" vulnerability affecting "Promontory" 300-series and 400-series chipsets. The supposedly security-hardened 500-series chipset will feature PCI-Express gen 4.0 certification. What this means is that the chipset bus between the AM4/TR4 SoC and the chipset will be PCI-Express 4.0 x4 (64 Gbps), translating to double the bandwidth. It remains to be seen if the downstream PCIe lanes put out by the chipset are gen 4.0, too. Current 400-series chipsets continue to put out stale gen 2.0 lanes, compensated for by additional gen 3.0 lanes put out by the SoC. Sources also mention that ASMedia-supplied chipsets will only hit the market toward the end of 2019, which means AMD X570 could be the only 500-series chipset option between the mid-2019 launch of 3rd generation Ryzen, and late-2019. You should be able to run these processors on older socket AM4 motherboards via BIOS updates, though.
    "

    https://www.techpowerup.com/251964/asmedia-to-continue-as-chipset-supplier-to-amd-but-x570-an-in-house-chipset

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