هذه هي الدفعة الثالثة في سلسلة من المقالات التي تتناول PSU efficiency. Article one focused on a [intlink id=“76” type=“post”]الخادم الجديد النظري[/intlink], الفن ICLE 2 على [intlink id=“77” type=“post”]أجهزة الكمبيوتر المكتبية نموذجي[/intlink]. This article will focus on a current real server, ويدخل جديدة PSU - ل 80+ platinum model.
The system spends a lot of time semi-idling (serving network and disk requests but not doing too much وحدة المعالجة المركزية عمل). I estimated that it would pull around 150W on average, and then calculated it below. It really did come out exactly like that!
| Base system Sempron LE-1100 (1.9غيغاهرتز أحادية النواة) على نفورسي 630I / 7050 motherboard. 2Gb DDR-II | 35في |
| 2x Samsung F4 2Tb HDDs, 7س 1TB الأخضر محركات الأقراص الصلبة المؤتمر الوطني العراقي. WD 1TB الأخضر, Seagate 1Tb and Samsung 1Tb, 1س WD 750GB محرك 7200RPM, 1x Maxtor 300Gb 7200rpm drive, 1س WD 200GB 7200RPM محرك IDE | 108في |
| الفوفل 1220 RAID بطاقة | 5في |
| 2العاشر 120mm فان القضية | 2في |
| المجموع | 150في |
من الاهتمام, assuming a cost of £0.10 per kWh this system would cost a total of £131.50 a year to run even with a perfectly efficient PSU!
ال ATX جمعية مهندسي البترول يتطلب-cific واحد في نشوئها 70% efficiency. Below is a comparison between a bare minimum ATX PSU وعدد قليل للغاية ايفي-cient PSU'ق.
الرقم المسجل في عام PSU is based on the minimum requirement and is therefore a worst case. I have calculated a best-case yearly saving, based on a kWh charge of 10p and assuming 24.7 usage.
| Make / Model | Efficiency at 150W | Est. A.C. تعادل القوة | ساف جي- |
| ATX V2.2 و250W ATX | 70% (في 150W) | 215في | |
| Seasonic X-400 | 88.8% | 169في | 40.39 £ |
| كو-صير AX850 | 87.4% | 172في | 38.02 £ |
| الموفرة للطاقة ال ماكس Modu87 500W | 88.5% | 169في | 39.89 £ |
| كو-صير CX400W | 82.1% | 183في | 28.31 £ |
| Kingwin الترفيه البلاتين 550W | 93.3% | 161في | 47.54 £ |
| HuntKey Jumper R90 300W 80+ Gold | 90% | 167في | 41.74 £ |
يخدع CLU سيون: This is the first scenario where new higher-efficiency حدات الدعم البرنامجي are reasonably price competitive based only on power usage. For such a system, a high efficiency PSU will pay for itself within approximately 3 years. If you plan to keep the system for more than 3 years a high efficiency PSU is a worthwhile investment as its TCO will be lower. As energy prices continue to rise this TCO advantage will widen.
تحديث (25-ديسمبر 2011)
Added the HuntKey Jumper R90. This PSU changes the conclusion conclusively. It produces savings of over £40, وهو ما لا يقل عن سعر PSU! فترة الاسترداد ل 1 العام, with an expectation that electricity prices will continue to rise is well worth the investment.
“Hi James I realise it has been a long while, but I just checked this on windows 11 (build 23H2)…”