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楽しい楽しいブログだお(^ω^) 2015 時々書き込んでるよぅぅ 2013.5月生まれたてのぴちぴちのよちよち歩きだお(^q^)オギャアア
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電源ほしい

ひきつづきグラボのおべんきょ

http://ja.wikipedia.org/wiki/Radeon#Southern_Islands_.E4.B8.96.E4.BB.A3_.28HD_7xxx.29
ウィキペディアのHD7xxxシリーズによると消費電力の項にPowerTuneLimitとあり、これが最大電力消費となっているようだ。やはりHD7770は100Wで、普通のスペック表にある80Wより高い。HD7790は新発売で記入がまだないようだが、全体的に20数W高くなるようなのでHD7790は最大110Wくらいと見積もっておいたほうがいいだろう。

電源

自分のPCのパーツ仕様書がようやく見つかった。
電源はエバーグリーン SILENT KING-4 LW-6550H-5というものだった。
サイレントキングww中二ネーム
今は絶版のようで情報があまりない。
容量550Wだが、+12Vが2系統あり、16Aと18Aの計34A。
18Aの系統はCPU用なのでそれ以外を16Aの系統でまかなう。
12V×16A=192W
マザーボードやHDDなどで80Wほど割くとすると残り112Wしかない。
最大消費電力/容量が50%~80%くらい?が目安らしいので、
(80W+グラボW)/192W、つまりグラボWは15W~70Wくらいか。
100Wクラスのグラボは厳しいようだ。だめじゃん

PCの電源がしょぼいことを痛感した。
電源のパワーは実質+12Vの容量なのでこの電源は実質しょぼい。実質。
ネットでの評価は、BTOでよく使われた粗悪な量産品といったもの。
ただ、おれはこの電源を2011~2013春夏現在までほぼ常時稼動させてるが
故障はまだないと思う。突然切れたりはない。
i3 2100 HD6450という構成じゃ容量の30%くらいにしかなってないんだろう。
長く使うには容量が大きいのをちびちび使うほうがいいのかもしれない。
なんか不具合があっても原因が電源かどうかわからないというのもある。
USBが認識したりしなかったりくらいか。電源は関係なさそうだ。
でもいつ壊れるかわからないし、たぶん電気効率も悪そう。
グラボのせるために容量アップさせたいし、電源の買い替えをしたい。
なんだかどつぼだな(^ω^)
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