Эта статья о БЛОКИ ПИТАНИЯ КПД для современной игровой Sandy Bridge ПК вытекает из 3 Предыдущие статьи, о БЛОКИ ПИТАНИЯ эффективность для сервер средней мощности, а средний уровень использования очень мощный игровой ПК и маломощный сервер или HTPC.
In this article I’m going to assume the system is operated from 4pm — 10pm weekdays and 10am — 11pm weekends at full power. I’m also going to assume the system is on and idle for the rest of the time.
В system in question pulls ~45w idle and ~247w under full load. I’m assuming an AMD Radeon HD 6870 (18w idle, 163w full) instead of the EN9400GT (11w idle, 23w full), the power numbers are adjusted accordingly. All of these estimates are deliberately on the high side. I expect a typical PC will spend more time off, more time idle, and wont be loaded as intensely as the example.
Фигура для дженерика БЛОКИ ПИТАНИЯ основан на минимальных требованиях и, следовательно, является наихудшим случаем. Даже с очень плохим КПД БЛОКИ ПИТАНИЯ ничья AC от стены не будет увеличиваться по мере ничья DC уменьшается. Я кал-куб связан-ные Лучший случая в год SAV-Ing, based on a kWh charge of 10p.
| Сделать модель | Efficiency at idle (45В) | Efficiency at load (247В) | Est. A.C. энергопотребление (холостой) | Est. A.C. энергопотребление (нагрузка) | Сав-ния |
| ATX v2.2 400w | 65% (at 45w) | 70% (at 247w) | 69В | 353В | |
| Сезонный Х‑400 | 80.4% (at 42.6w) | 91% (at 248.4w) | 56В | 271В | £31.43 |
| Кор-Sair AX850 | 77.3% (at 43w) | 90.4% (at 251w) | 58В | 273В | £29.70 |
| Энер-Max Modu87 500W | 77.5% (at 43.4w) | 90.5% (at 250.6w) | 58В | 273В | £29.88 |
| Кор-Sair CX400W | 73.2% (at 43.2w) | 85.5% (at 250.6w) | 61В | 289В | £23.14 |
| Кингвин Лазер Платинум 550 Вт | 83.2% (at 41.6w) | 93.8% (at 248.6w) | 54В | 263В | £34.89 |
| HuntKey Jumper R90 300 Вт 80+ Золотой | 88% (at 60W) | 89% (at 250w) | 51В | 281В | £32.59 |
The conclusion is no longer clear. The value of an upgrade has improved over the previous scenario with a gaming PC. However, even with a lot of heavy use, and comparing the most efficient БЛОКИ ПИТАНИЯ’s with the worst a budget ATX БЛОКИ ПИТАНИЯ can perform, a new БЛОКИ ПИТАНИЯ will still take around 4 years to pay for itself. A real world upgrade is unlikely to net this much saving.
If you are considering replacing an existing БЛОКИ ПИТАНИЯ my advice would be not to bother, unless you have additional reasons. If you are buying new then it is worth paying more for a better БЛОКИ ПИТАНИЯ, within reason. Of course if you want the efficiency for other reasons (низкий уровень шума, low heat) then those factors may make the value difference irrelevant.
Обновить (25-Дек-2011)
Corrected slight error for Modu87+ and added the HuntKey Jumper R90. This БЛОКИ ПИТАНИЯ changes the conclusion for anyone with a low efficiency БЛОКИ ПИТАНИЯ. It produces savings of over £30, which is approximately the price of the БЛОКИ ПИТАНИЯ! Срок окупаемости 1 год, с ожиданием того, что цены на электроэнергию будут продолжать расти, стоит инвестиций.
“Hi James I realise it has been a long while, but I just checked this on windows 11 (build 23H2)…”