0পিএসইউ ফলপ্রসু 2 - একটি টিপিক্যাল গেমিং পিসি

Fol­low­ing on from the slight sur­prise that a new পিএসইউ is a poor invest­ment for a low power PC I decided I’d reas­sure myself that an effi­cient পিএসইউ is a good invest­ment for a typ­ic­al “enthu­si­ast” PC.

To do this depends on the con­fig­ur­a­tion, how much time the PC spends on, and how much time it spends being heav­ily util­ised. I’m basing this on a fairly-high power single-GPU- sys­tem with a Core i7 CPU-র and a Radeon 5870. I’m also going to assume the sys­tem is oper­ated from 3pm — 11pm week­days and 9am — 1am week­ends, mak­ing for a total of 72 hours a week. I’ll also assume the sys­tem spends 50% time idle and 50% full-load.

দী sys­tem in ques­tion pulls ~80w idle and ~340w under full load. Find­ing effi­cien­cies for this is tricky, so the value will be roun­ded up to 400w (দ্য পিএসইউ’s in ques­tion don’t vary greatly between 300w and 400w)

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. Most sys­tems also use lower power CPU-র’s and GPU-’s too.

জেনেরিক জন্য চিত্রে পিএসইউ সর্বনিম্ন প্রয়োজনীয়তার উপর ভিত্তি করে এবং সেই কারণে একটি লক হয়. এমনকি একটি খুব দরিদ্র দক্ষতার সঙ্গে পিএসইউ যেমন ডিসি ড্র কমে প্রাচীর থেকে এসি ড্র বৃদ্ধি হবে না. আমি একটি সেরা-কেস বাত্সরিক সংরক্ষণ হিসাব আছে, based on a kWh charge of 10p.

A new পিএসইউ in this scen­ario is prob­ably not advis­able on a fin­an­cial only basis. Even with quite a lot of heavy use, and com­par­ing the most effi­cient পিএসইউ’s with the worst a budget এটিএক্স পিএসইউ can per­form the sav­ing will take around 5 years to recoup. A real world upgrade is unlikely to net this much saving.

If you are con­sid­er­ing repla­cing an exist­ing পিএসইউ 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 পিএসইউ, with­in reas­on. Of course if you want the effi­ciency for oth­er reas­ons (low noise, low heat) then those factors may make the value dif­fer­ence irrelevant.

হালনাগাদ (25-ডিসেম্বর 2011)

Added the HuntKey Jump­er R90. Whilst it is sold as a 300W পিএসইউ, it does work slightly above spec, espe­cially if well cooled. This পিএসইউ does make a bit of dif­fer­ent to the con­clu­sions. It pro­duces sav­ings of over £20, which is a sig­ni­fic­ant pro­por­tion of the price of the পিএসইউ!  A pay­back peri­od of 2 বছর, with an expect­a­tion that elec­tri­city prices will con­tin­ue to rise would cer­tainly be worth think­ing about. How­ever, the HuntKey isn’t spe­cified high enough to really provide for the con­fig­ur­a­tion spe­cified in this scen­ario, and as such we could­n’t recom­mend run­ning it bey­ond its rating.