AMD RX6500XT頻寬縮水:性能損失還真不少 - 3C

By Connor
at 2022-01-18T00:01
at 2022-01-18T00:01
Table of Contents
~
AMD首款6nm顯卡RX 6500 XT頻寬縮水:性能損失還真不小
還有兩天,AMD RX 6500 XT顯卡就要解禁上市了。雖然定位入門級
但它是全球第一款6nm工藝遊戲卡,也是備受關注。
既然是入門卡,規格自然會有各種精簡,但意外的是
它的系統頻寬只有PCIe 4.0 x4——RX 6600系列是PCIe 4.0 x8,RX 6700系列及更高則是
完整的PCIe 4.0 x16。
PCIe 4.0 x4其實是如今高端SSD常用的規格,頻寬8GB/s
相當於上代PCIe 3.0 x8,理論上對入門顯卡是基本夠用的,那麼實際遊戲中會不會有明
顯影響呢?
HardwareUnboxed提前用上代RX 5500 XT進行了一次測試——
詭異的是,RX 5500 XT支持的還是PCIe 4.0 x8,而且顯存有4GB/8GB兩種可選,更凸顯了
RX 6600 XT的“倒退”。
《古墓麗影崛起》,1080p最高畫質,8GB顯存的時候
PCIe 4.0 x4對比PCIe 4.0 x8毫無損失,PCIe 3.0 x4平均幀率、1%最低幀都丟了2FPS。
4GB顯存的時候更明顯,平均幀丟了4FPS,1%最低幀則損失1FPS,
PCIe 3.0 x4就很慘了,平均幀、1%最低幀銳減25%、42%。
《毀滅戰士:永恆》,1080最高畫質,差別就更明顯了
8GB/4GB顯存的時候,PCIe 4.0 x4平均幀分別下降7.5%、22.1%
後者的1%最低幀也大減22%。
PCIe 3.0 x4簡直就沒法看了。
匯總12款遊戲,PCIe 3.0 x4對比PCIe 4.0 x8平均損失幾乎一半,最高達到了171%。
可惜,沒有匯總對比PCIe 4.0 x4、PCIe 4.0 x8……
當然,RX 6500 XT依然有16MB無限緩存,能在一定程度上補償頻寬損失,但也不要期望太
多。
https://news.mydrivers.com/1/809/809884.htm
台灣訂價已知
6990 丐卡
7990 頂卡
閹割過頭
--
Tags:
3C
All Comments

By Elvira
at 2022-01-15T09:22
at 2022-01-15T09:22

By Barb Cronin
at 2022-01-18T18:16
at 2022-01-18T18:16

By Jack
at 2022-01-15T09:22
at 2022-01-15T09:22

By Selena
at 2022-01-18T18:16
at 2022-01-18T18:16

By Dorothy
at 2022-01-15T09:22
at 2022-01-15T09:22

By Frederic
at 2022-01-18T18:16
at 2022-01-18T18:16

By Daph Bay
at 2022-01-15T09:22
at 2022-01-15T09:22

By George
at 2022-01-18T18:16
at 2022-01-18T18:16

By David
at 2022-01-15T09:22
at 2022-01-15T09:22

By Kelly
at 2022-01-18T18:16
at 2022-01-18T18:16

By Caroline
at 2022-01-15T09:22
at 2022-01-15T09:22

By Quanna
at 2022-01-18T18:16
at 2022-01-18T18:16

By Dinah
at 2022-01-15T09:22
at 2022-01-15T09:22

By Zanna
at 2022-01-18T18:16
at 2022-01-18T18:16

By Jacob
at 2022-01-15T09:22
at 2022-01-15T09:22

By Damian
at 2022-01-18T18:16
at 2022-01-18T18:16

By Valerie
at 2022-01-15T09:22
at 2022-01-15T09:22

By Jessica
at 2022-01-18T18:16
at 2022-01-18T18:16

By Ida
at 2022-01-15T09:22
at 2022-01-15T09:22

By Suhail Hany
at 2022-01-18T18:16
at 2022-01-18T18:16

By Margaret
at 2022-01-15T09:22
at 2022-01-15T09:22

By William
at 2022-01-18T18:16
at 2022-01-18T18:16

By Lauren
at 2022-01-15T09:22
at 2022-01-15T09:22

By Zora
at 2022-01-18T18:16
at 2022-01-18T18:16

By Annie
at 2022-01-15T09:22
at 2022-01-15T09:22
Related Posts
Intel棄用SGX使得新電腦無法播正版藍光片

By Ula
at 2022-01-18T00:01
at 2022-01-18T00:01
Win11 2022 版曝光:桌面功能煥然一新

By Isabella
at 2022-01-18T00:00
at 2022-01-18T00:00
華擎Z690 PRO RS搭CPU送RAM活動

By Zanna
at 2022-01-18T00:00
at 2022-01-18T00:00
蘇媽正準備新版6000系顯卡 VRAM速度升18G

By Edith
at 2022-01-17T23:49
at 2022-01-17T23:49
220V拉好了沒 老黃4090公版可以吃600W

By Lydia
at 2022-01-17T23:40
at 2022-01-17T23:40