作為三大板卡大廠,首發上線的RTX 2080(Ti)怎能少了技嘉的身影。但是這次技嘉頗為低調,并沒有一開始就拿出豪華非公,甚至AORUS也沒有產品,定位最高的是技嘉RTX 2080 (Ti)GAMING OC這一系列,那么小編今天就帶大家介紹一下時下熱門的RTX 2080/2080 Ti SLI雙卡交火性能怎么樣。
NVIDIA SLI多卡互連技術已經誕生14年了,不斷完善提升,RTX 20系列顯卡則首次引入了此前存在于專業計算卡領域NVLink互連總線,帶寬徹底不是問題,那么實際效果如何呢?
RTX 20系列上的NVLink其實是個精簡版,RTX 2080 Ti上為雙通道,雙向帶寬100GB/s,號稱可以支撐8K超高清多屏系統,RTX 2080則是單通道50GB/s,都大大高于目前SLI-HB橋接的僅僅1.95GB/s。
但是,RTX 2070就狠心不支持NVLink SLI,而上一代GTX 1060砍掉了SLI,也就是說組雙卡的成本越來越高了,想拿兩塊中端卡去拼高端卡已然不可能。
NVIDIA官方推出的NVLink SLI橋接器非常酷,但價格高達79美元,比現在的貴了一倍,而第三方的目前只有華碩做了一個,卻更貴要89歐元。
TechPowerUp仔細研究并拆解了NVLink SLI橋接器,發現它采用了124個針腳(現在的只有52個),但內部并沒有什么高級控制芯片,僅有的兩顆小芯片居然是用來控制LED燈的!
換言之,79美元買這東西基本就是信仰了,TechPowerUp也毫不客氣地用“outrageous”(無法容忍)形容它。
測試過程就不說了,TechPowerUp一如既往地深入,跑了多達23款游戲,不過驅動還是首發的411.51版本,不知道后續會不會優化更好。
測試結果里的顯卡也非常多,我們只看x80家族,以下依次是1080p、2K、4K分辨率:
在所有測試游戲中,即便是表現最好的4K分辨率下,RTX 2080、RTX 2080 Ti SLI雙卡相比單卡的提升效率分別為26%、24%,即便排除不支持的游戲也都只有55%,實在不高。
而在1080p分辨率下,NVLink SLI的效率只有14%、4%,即使是在優化到位的游戲里也不過25%、15%。
其實,這比GTX 1080 Ti上還要好不少呢,它即便在支持較好的游戲里效率也只有19-43%。
如此一來,RTX 2080系列雙卡的性價比就可想而知了,不幸成為有史以來最低的雙N卡組合。
事實上,NVIDIA如今對于SLI的熱情也一點都不高,甚至已完全不支持三卡、四卡,所以即便你不差錢入了RTX 2080、RTX 2080 Ti,也實在沒必要上雙卡,驅動、游戲支持都不會非常到位,還得花79美元買個坑爹的“橋”。
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總得來說,小編認為性能提升不大!一般玩家交火需謹慎!
原創文章,作者:愛評測維修網,如若轉載,請注明出處:http://www.gdyj99.com/13763.html
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