[情報] GN測5090 on PCIe Gen3 vs Gen5:只差1~4%
來源:Gamers Nexus YT
https://youtu.be/L1NPFFRTzLo
先說結論:
遊戲中,RTX 5090在PCIe Gen5比在Gen3快僅1~4%
首先來看Wiki整理的PCIe規格表
https://i.imgur.com/FlZh8Ro.png
每代都遵守將單條通道速率(幾乎)加倍的提升規律
而總頻寬 = 每條速率 * 通道數
很容易得出PCIe 3.0 x16 = PCIe 4.0 x8 = PCIe 5.0 x4
其它自己算 很簡單:)
放張圖GN的圖供參考
https://i.imgur.com/atqJX2n.png
剩下的數據圖我就不一一放出了
直接做了個整理
https://i.imgur.com/kqI4BUA.png
只放平均幀的比較
想看1% Low & 0.1% Low的人自己去影片拉進度條
從結果可以看出Gen 3與Gen 5遊戲效能只差1~4%
除非你有寫輪眼不然一般玩家應該感覺不出來
4090的例子耶穌也有測過
這種x16全部通道都在的旗艦卡 照以往經驗測出來就是差1~3%左右
順便臭一下AMD的RX 6500XT真的爛到流湯
該卡頻寬被砍到僅有PCIe 4.0 x4 只有4條通道啊!
導致如果該卡插在只支援Gen 3的老平台
總頻寬僅有PCIe 3.0 x4 效能折損會很嚴重
偏偏該卡的定位就是入門卡
消費族群本來就是預算有限、可能還在用老平台的人
基本上就是個電子__
電競耶穌只有測遊戲效能
沒有測AI相關的應用
搞不好AI方面對頻寬的要求較高,會讓Gen 3與Gen 5的差距變明顯?
但這部分就交給其他人去測試了
-
順便祝大家新年快樂
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