3800X調教心得 - 3C
By Franklin
at 2019-12-17T12:25
at 2019-12-17T12:25
Table of Contents
如果照以往的習慣,標題應該是"3800X超頻心得",
但是一開始想循慣例先用預設電壓尋找時脈上限時,
得到的是無止盡的過熱重開...
當下領悟這代要做的只有如何避免頂到溫度牆而已,所以只是調教心得。
==硬體資訊==
CPU: 3800X
MB: ASUS TUF GAMING X570-PLUS (WI-FI)
RAM: 美光 Ballistix Sport Sport LT 3200 8GB*2
==過測標準==
AIDA64單燒FPU,10分鐘。
CinebenchR20強度不夠,不採用。
Prime95太變態,也不採用。
==BIOS設定==
關PBO
Ai Tweaker:
DIGI+ VRM -> VDDCR CPU Load Line Calibration: Level 4
DIGI+ VRM -> VDDCR CPU Switching Frequency: 300
DIGI+ VRM -> VDDCR CPU Power Phase Control: Extreme
DIGI+ VRM -> VDDCR CPU Duty Control: Extreme
Advanced:
AMD CBS -> Global C-state Control: Disabled
==調教過程==
參考Silicon Lottery 的統計資料:
https://siliconlottery.com/pages/statistics
以1.275V 4.20GHz作為出發點來測試,過程中總共換了三款散熱器:
利民True Spirit 120M Rev.A
AMD Wraith Prism 信仰扇
利民AS120 PLUS
1. 使用True Spirit 120M Rev.A:
原本想沿用1700X時就在用的真魂120,想說熱設計功耗160W應該夠用,
結果測出來只能穩定跑在1.28125V 4300MHz而不會頂到溫度牆,
但是單燒FPU已經燒到96度,這還是趁著上上周台北均溫不到15度時,
開窗測出來的結果,十分的不行。
為了確認不是沒裝好還重裝過二次,後來想起這款有微凸底的設計,
雖然現在宣傳時都不強調,但這款確實是有的,
搭配Zen 2這種Die偏一邊的設計應該會水土不服,
隔天果斷拆下換上原廠信仰扇。
2. 使用AMD Wraith Prism 信仰扇(高轉速模式):
環溫約18~19度,找出可穩定運作的組合如下:
1.28125V 4325MHz
1.28750V 4350MHz
1.29375V 4375MHz -> AIDA64單燒FPU 97度
信仰扇雖然噪音非常大,壓制力還是夠的。
3. 使用利民 AS120 PLUS:
俗稱買風扇送的散熱器,因為信仰扇實在太吵,又能用台幣780元入手,
就買了,昨天早上才到手,下午一點半環溫27度時開測,結果如下:
1.28125V 4325MHz -> AIDA64單燒FPU 92度
1.28750V 4350MHz -> AIDA64單燒FPU 94度
1.29375V 4375MHz -> AIDA64單燒FPU 95度
https://i.imgur.com/juGzC5q.png
1.3?V 4400MHz -> 目前的不可超越之壁,要不是電壓不夠
不穩當機,就是過熱重開。
AS120 PLUS的效果實在令人滿意,前一篇測美光E-DIE時,
曾說要上DDR4-3800要加VDDG電壓,導致必須降速到4300MHz才穩定,
現在因為散熱改善,1.29375V 4350MHz配上DDR4-3800已可穩定運作,
AIDA64單燒FPU約94度:
https://i.imgur.com/ACU1sK9.png
再補上早上2點,環溫18.4度時的結果,AIDA64單燒FPU約88度:
https://i.imgur.com/WXphUl0.png
再度挑戰4.4GHz:
https://i.imgur.com/Zsqo1y9.png
1.36V看來可以運作,但電壓和溫度已大幅提升,不划算,不採用。
心得:
1. 在用風冷的情況下,最終會卡在溫度牆,
電壓能降多低來減少發熱、散熱器散熱夠不夠快是重點。
2. AMD信仰扇比想像中還有力,只是很吵。
3. 利民AS120 PLUS的表現實在超乎我預期,而且很便宜。
感覺到後來變成在測散熱器。
--
Tags:
3C
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