[電源器] 多數用開的 PSU 電源不能完全適合新的 Intel Haswell 處理器?

本帖最後由 ciel 於 2013-5-10 11:08 編輯

Haswell's 有一個極低功耗的狀態 C6/C7,要求 +12 V2DC 電源低至 0.05 A 負載時仍能穩定地工作,以前只要求 0.5 A。

Table 50, page 66 of   http://www.formfactors.org/developer%5Cspecs%5CPSU_DG_rev_1_1.pdf


因為是新的規格,相信用開的 PSU 電源有極大部分都不符合要求,解決方法是把主機板 BIOS 裏面的 C6/C7 選項關閉。
http://vr-zone.com/articles/is-your-power-supply-ready-for-haswell-/19848.html
http://techreport.com/news/24738/few-psus-support-haswell-c6-c7-low-power-states


Intel 列出了 23 個型號符合規格的 PSU 電源 (ATX12V 2.3, 2.31 DG 1.3),19 個 Corsair models, 3 個 InWin, 1 個 Seasonic。
http://www.intel.com/reseller/psu_selector/


在 2013-05-02,Enermax 率先公布適合 Haswell CPU 的 PSU 電源名單。.
Enermax power supplies are ready for forthcoming Intel® Haswell™ CPUs

They are equipped with a DC-to-DC converter which enables the so-called ZERO Load Design. These power supplies will deliver rock-stable voltages even at 0W load. Also the owners of older Enermax power supplies can be relieved: The manufacturer applies the ZERO Load Design already in all high-end power supplies since the Revolution85+ series which has been launched in 2008.

又換Socket, 又換埋火牛.........

intel 真係好強, 不停要人咁換野, 才可以升級

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換socket 我寧願用2011 行x79 duel u 好過xd

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Disable 左佢咪得囉
鬼叫自己早左換牛咩

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咁即係升級要換U換板再換牛

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我隻VX450仲行得走得
未想換牛住

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19 個 Corsair models, 3 個 InWin, 1 個 Seasonic。
...
ciel 發表於 2013-5-4 21:43

Corsair  型號

AX760, AX860,

AX760i, AX860i, AX1200i,

CX750,

CX750M,

GS600, GS700, GS800,

HX750, HX850, HX1050,

TX650, TX750, TX850,

TX650M, TX750M, TX850M


Inwin  型號

IP-S300GQ3-2, IP-S350GQ3-2 , IP-S400GQ3-2


Seasonic  型號

SSP-550RT

http://www.realhardtechx.com/index_archivos/Page447.htm

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C6/C7 唯一既用途就係慳電,兼慳到盡都係 6W
換一個火牛既價錢,相等於要慳足十年八年電
咁何必自尋煩惱?

原來呢個功能係比 tablet / notebook 用,果D 係慳得幾多就幾多
但 desktop  就算把啦
wilsonkf 發表於 5/5/2013 10:24


不錯,就算我要升級 Haswell,也不會為了這個功能另購火牛 ( 況且對我來說 Haswell 根本不值得升級 )。

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本帖最後由 ciel 於 2013-5-5 12:38 編輯

Minimum Load – Why is it required and. What Happens if I Don't Have Enough?
如果負載電流低過 PSU 電源可以維持的電流時有甚麼後果?

因為有保護線路,PSU 會關閉或重新啟動。亦有可能損壞零件。

http://www.patentstorm.us/patents/5402059/description.html
A problem can occur when loads on the output of a switching power supply become disconnected from the supply. When this occurs, the output current from the power supply becomes reduced (or eliminated if all loads become disconnected). If the output current becomes small enough, the output voltage of the power supply can reach the peak value of the secondary voltage of the transformer of the power supply. This occurs because with a very small output current, the inductor in the L-C low-pass filter does not drop much voltage (if any at all). The capacitor in the L-C low-pass filter therefore charges up to the peak voltage of the secondary of the transformer. This peak voltage is generally considerably higher than the average voltage of the secondary of the transformer. The higher voltage which occurs across the capacitor, and therefore also at the output of the power supply, can damage components within the power supply. The higher voltage can also damage any remaining electrical loads connected to the power supply.

  
One means of assuring such a minimum current draw is to connect a dummy resistor inside the power supply across output terminals of the power supply.

以前 IBM AT 時代 PSU +12 V 要求最少 2.5 A 維持運作,IBM 在某些情況下要將 +12 V 連接到一個 5 ohm, 50 watt 'sandbar resistor'.
http://www.tomshardware.com/reviews/power-supply-specifications-atx-reference,3061-13.html

因此,主機板 BIOS 裏面的 C6/C7 想會預設為不選,但在不知情下選了C6/C7 ,又不知道 PSU 是否合用,難免引致電腦不穏定。

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