i5 6400vs6500/ intel turbo boost頻率 - 3C

By Aaliyah
at 2016-04-24T01:28
at 2016-04-24T01:28
Table of Contents
好像讓原本好好的開箱文歪串了,所以另外發一篇文
先呼籲理性討論,這時間雞排珍奶店應該都關了,所以安全吧?
這篇想閒聊的點有兩個
1. 內顯滿載是否影響turbo boost頻率
2. i5 6400和i5 6500你會拿哪一種?
對內顯沒興趣的歡迎跳過1,畢竟主要是想討論2
先從1開始吧,畢竟只是附帶的
intel的turbo boost會依照情況動態調整頻率,影響的因素是:
「... if the part is operating under power, temperature,
and current specifications limits of the thermal design power (TDP)」
(intel 官網給出的 http://goo.gl/4oKH7c )
所以內顯滿載不是主要因素,但內顯滿載會增加power消耗量,可能會因此頂到限制
剛剛拿筆電測了一下,但是因為散熱不佳所以溫度頂到100度了,沒辦法做直接的證明
桌電1231v3沒內顯不能測,所以直接的證明就等其他板友測試了...
以下摘錄前一篇的推文
推 Radeon : 內顯一定是也會計入TDP的拉..APU也是這樣,所以860K 04/23 15:37
→ Radeon : +獨顯實際上還是比APU強 04/23 15:37
→ kill0210 : 沒用過在那邊裝懂, Intel TB 寫多少 就是多少 04/23 15:55
→ kill0210 : 上不去只有兩個問題,第一 你溫度過熱,第二 你BIOS有 04/23 15:56
→ kill0210 : 問題, 根本沒有弄好 intel processor current 04/23 15:56
推 Radeon : 好嗆捏...不然Intel的TDP是忽略內顯不算? 04/23 16:01
→ Radeon : 如果四核心+內顯滿載一樣可以上去3.1,那6400幹嘛 04/23 16:02
→ Radeon : 標2.7? 04/23 16:02
→ Radeon : 他就當3.1賣就好啦 04/23 16:02
→ kill0210 : 你真的很會嘴砲, 拜託去弄懂再來好嗎~? 04/23 16:03
推 Radeon : 我真的不懂耶,你解釋一下為什麼6400實際上可以跑3. 04/23 16:06
→ Radeon : 1,intel卻要賤價當2.7賣? 04/23 16:06
→ Radeon : I社慈善機構? 04/23 16:07
→ kill0210 : 去測試上不去 再來跟我戰 04/23 16:08
→ ang728 : 為什麼 阿CPU分類不就這樣 04/23 16:17
→ ang728 : 另外iGFX+Core滿載是不一定來到TDP上限 04/23 16:18
→ ang728 : 還有TDP限制是可以在BIOS裡面上下其手的 04/23 16:18
→ ang728 : 沒記錯的話 kill0210 應該每個周一到周五都在跟 04/23 16:20
→ ang728 : TB奮鬥吧....XDDDD 04/23 16:20
Radeon板友的論點是會頂到TDP以及intel不會做慈善事業(賠錢生意) kill0210板友的論點是以實際狀況為主,也就是intel網頁說明的部分
我是覺得內顯+核心一起滿載也不算慈善事業,加上intel網頁的說明
內顯和tb應該只是間接關係,內顯+cpu core都滿載還是有可能的
--
然後是第二部分,i5 6400 vs i5 6500
最近幫朋友配了單,這兩顆CPU也是有差幾百元就有猶豫
i5 6400基頻比較低只有2.7,i5 6500則是3.2造成6400賣相比較差
但其實各大商家都有標出turbo boost動態頻率上限,
intel 官網則是詳細標出不同的作用中核心數量對應的動態頻率上限:
使用核心數 1 2 3 4
6400 3.3 3.3 3.2 3.1
6500 3.6 3.5 3.4 3.3
可以看出實際差距是0.3Ghz內
來源: http://goo.gl/4oKH7c (和討論一同一篇)
一般買桌機應該散熱/電源不會太差,所以按照網頁說法,動態頻率多半是上的去的
也就是說6400沒有到那麼雞肋,他們相比大概就是跟4代cpu的4440vs4570情況類似
溫度相差不多,頻率也差不多,升級大概只有跑分微微有感,要有感還是上e3或i7
我想閒聊的是,
就遊戲用途而言,板友會選擇哪一顆?
在甚麼情況下才會選6500?
之前買頻率高一點的4570也只是爽感而已,但現在想想好像是沒什麼值得的理由
這差價(現在高價屋差700)能從撼訊380升380X了,vram也變4G,似乎蠻划算
結果打完這篇文章已經超過預定要睡覺的時間了囧
只能再呆個一下吧,早上起來再回沒回到的推文
--
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