求助电脑高手 关于2张GTX680 sli，需要多少瓦的电源？
有4个网友回答
那么大体来算一下最大功耗
GTX680 *2 = 195w *2= 390w （这个是官方给的最大功耗，显卡实际其实到不了这么高）
主板z77 10w
cpu e3 69w
内存 10w
硬盘+ 光驱 30w
那么可以看出您的整体平台最高功率可以达到 500w 出头。
按道理来讲 额定600w的电源比较合适
但是E3 的性能带 680*2 可未必行。至少3770k 超超频 才不会让cpu是瓶颈。 3770k 超频后功耗基本是100w出头。 那么整机功耗该是 550w 左右 600w 额定的电源也是足够的。
用大厂商的额定600w 电源一定可以带的动680sli的平台。即使您以后自己要超频显卡 那么基本上也不会超出600w额定电源的能力。（如果是华硕 GTX680 DC TOP2 这种厂商已经给预先超好的显卡 功耗控制的非常好 功耗不会超过公版GTX680的功耗）
您给的那三个机箱 。空间都挺大 也都是游戏机箱。比较他们的不同的话。
虎鲨外观霸气，性能也是最好的 有前置usb 3.0和风扇调速 这俩功能很实用。不过也是贵一些
太极没有前置usb 3.0和风扇调速 都没有
侦察兵2 没有风扇调速 但是有前置usb 3.0。
公版的GTX680满载功耗不大，即使是华硕 GTX680-DC2T-2GD5这样核心频率高达1.2G的卡，供电也不过是8pin+6pin，也就是说满载不会超过300W，双卡SLI的话，很难两个卡都满载的，其他硬件耗电也不高，用额定750W的电源就够了，当然用850W的会稳定很多，1000W的就完全没必要。
这几个机箱都没问题的，你现在的机箱也可以装下，不过要拆掉硬盘笼，如果很要换，建议用酷冷至尊侦察兵2。
750瓦足够的，其实你现在的配置450瓦都足够，只要是额定750，品牌比较好的电源就可以。
海盗船的是没问题的。
不过其实你没什么必要再加个显卡，交火交不好也是会适得其反的，而且即便成功了性能提升也不多。
电源建议选择模组电源 骨伽模组金牌GX600W 这个 足够了 金牌电源 600元就买了 都680SLI了 这么牛B的主板 、 可能E3会有点瓶颈 但是只是一点不会大。还是建议I7 3770K 3930X级别 不过你只问电源 就推荐这个了
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