CPU-Z 修復AMD銳龍跑分過高的 BUG 並解釋 - 3C
By Hedwig
at 2017-05-05T11:48
at 2017-05-05T11:48
Table of Contents
AMD銳龍和Intel 7代酷睿的對決從今年Q1開始就一直硝煙彌漫,似乎又回到了你追我趕的
競爭年代。
在評測中我們發現CPU-Z自帶的BenchMark跑分工具,跑出來的成績一直都對銳龍非常有利
同樣的8核、6核規格,CPU-Z的跑分照樣跑得你懷疑人生!
CPU-Z作為最常使用的硬體檢測工具,從1.73版開始增加了Benchmark測試工具
跑分能自帶類比其他型號的處理器,分數也比較穩定
所以CPU-Z的跑分還是具有參考意義,大家樂於用它來對比CPU性能。
上個月底CPU-Z 1.79版發佈了
有些玩家可能會注意到自己的處理器跑分變低了
特別是銳龍得分大降,原因是CPU-Z 1.79使用了全新的Benchmark測試工具
修復了之前銳龍跑分過高的bug。
對此CPU-Z官方也專門為新版測試工具跑分演算法上的改變做了解釋
①首先是新版跑分比之前跑分低的問題,CPU-Z方面解釋稱第一版測試工具發佈於2015年
當時只有極少數8核處理器,比如Core i7-5960X這樣的。
現在銳龍處理器發佈了,6核、8核處理器變得稀鬆平常,未來10核、12核、16核處理器也
會相繼問世
更多的核心意味著更高的多執行緒得分,更低的並行性使得跑分對比更容易。
新版測試工具使用了全新的演算法,因此分數不能再與之前的結果直接對比。
②另外的說明是關於AMD銳龍的,此前的測試中銳龍處理器得分比Intel處理器高得多
同頻率下甚至能比Intel Skylake架構處理器高30%,這明顯是不正常的,所以新版跑分工
具裡修復了這個問題。
CPU-Z深入調查之後稱這其實是測試工具在銳龍上出現了特殊情況,會出現不符合預期的
整數指令佇列
在之前的測試工具中這個操作會在現有處理器架構上帶來顯著而且相似的延遲。
當然銳龍處理器發佈後,他們發現該處理器的ALU運算單元在處理某些不符合預期的佇列
時會使用更有效率的方式
導致測試分數出現了與性能不符的結果。
不過他們重新審查了測試軟體及演算法也沒能找到性能大幅提升發生的單一場景
他們認為這種特殊情況在現實中是不可能出現的,而現在的新演算法中並不會出現這種情
況。
除了上面兩個比較突出的問題之外,CPU-Z團隊還解釋了新版測試工具的一些其他設計
比如使用C++語言開發,VC2008編譯,也沒有使用什麼特殊的指令集
不過X64版使用的是SSE/SSE2指令集做浮點運算,32bit還在使用傳統的X87指令集,性能
大約是X64版的一半。
來源︰http://news.mydrivers.com/1/530/530905.htm
CPU-Z 出面解釋 → 不管我認定你一就是被Intel買通跟打壓
CPU-Z 贏就好,其他跑輸或者遊戲輸,都是假的不重要
坐等其他幾間跑分龍頭
MAXON Cinebench + Futuremark 3DMark + SiSoftware Sandra 一齊出面解4澄清
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