AMD Ryzen APU 系列僅提供永久鎖定x8頻寬 - 3C
By Delia
at 2018-02-15T12:18
at 2018-02-15T12:18
Table of Contents
AMD 在 12 日正式推出了首款集成四核心 “Zen” CPU 及 “Vega” 圖形核心的
Desktop 處理器 Ryzen “Raven Ridge” APU
當中其中一個吸引用家的關鍵規格之一就是其 PCI-Express 接口。顯然
除了專用於晶片組總線的 4 條通道及支援 32Gbps M.2 NVMe 插槽的 4 條通道外
這些晶片僅具有 8 個用於獨立繪圖卡的 PCI-Express Gen 3.0 通道,意思是插入
PCI-Express 3.0 x16
插槽的任何獨立繪圖卡都將以一半的頻寬 PCI-Express 3.0 x8 運行嗎?
對於少數用家來說,可能會發現將全新的 Ryzen “Raven Ridge” APU 與 AMD X370 晶
片組主機板搭配使用時
第二個 x16 插槽 ( 通過從第一個 x16 插槽中分割 PCIe 通道 ) 將不起作用,並且沒有
提供最少的 x8 頻寬
即使在擁有 SLI 認證的 X370 主機板上,也不可能使用 NVIDIA SLI
讓人質疑晶片會向 IGPU 分配的一些內部 PCIe 通道永久鎖定為 PEG 8 通道
然而 AMD 確認 “Zen” CCX 及 “Vega 11” iGPU 是通過 Infinity Fabric 互相通訊
,而並非使用 PCIe 通道。
AMD 官方亦特別為此發出聲明,提及到 Raven Ridge 的主要是針對需要內建繪圖核心的
用家群
他們將會選擇搭配 B350 或 A320主機板,這些主機板將不具備拆分 PCIe 通道的功能
至於選擇 X370 主機板的買家通常會搭配 Ryzen 5 6 核心及 Ryzen 7 8 核心等高端
Ryzen 處理器
以配合該類別和價格的主板。Ryzen 5 2400G 或 Ryzen 3 2200G 已內建了圖形核心
對於大多數的用家而言再搭配單一的獨立 GPU 如 Radeon RX VEGA64 或 Radeon RX 580
已經綽綽有餘,至於重視額外 PCIe 通道的用家
即可以選擇第一代 Ryzen 台式機處理器的包括 Ryzen 5 1500X 或 Ryzen 3 1300X 型號
。
Raven Ridge 是為超輕薄筆記本電腦領域而設計的,同時亦擴展到主流的 Desktop 平台
它通過由具擴展性的 AMD Infinity Fabric 連接 “Zen” 及 “Vega” 來實現
為 Desktop 平台市場的價格提供出色的圖形性能和功能。Socket AM4
平台的可擴展性意味著用戶可以從入門級主機板及主流處理器入手
現在用家升級處理器及平台功能的方式
將與升級獨立繪圖卡的方式相同,無需要整個平台更換更具彈性。
來源︰HKPEC 整理
http://www.hkepc.com/16334/
覺得效能不夠插獨顯 結果 掰咖減半頻寬 哭哭
--
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