PSU- IS it so complicated too chose one.

[jive]

Hi everyone,
First , English is not my native language so excuse me for my error.

I just want to understand why people who build there system, do a lot of research for the part compatibility, always have problem with the PSU.
There is a lot of website or on tom's where a list a good PSU is available,first tier is the brand to go with.
The PSU should be the part you never messed with or try to save money. If anything happen to that piece all the other could fried, be unstable or anything else could happen.

Thanks

 

[JackNaylorPE]

Not really.....it's normally very simple.....if you have a standard system, absent of 12 HDs or mulktiple WC pumps for example, your GFX card will determine your required PSu size.

1. Go to your GFX card manufacturer's web site and loom up system requirements:

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-770/specifications

Thermal and Power Specs:
98 C - Maximum GPU Temperature (in C)
230 W - Graphics Card Power (W)
600 W - Minimum Recommended System Power (W)
One 8-pin and one 6-pin - Supplementary Power Connectors

http://www.amd.com/us/products/desktop/graphics/7000/7970ghz/Pages/radeon-7970GHz.aspx#2

500W (or greater) power supply with one 150W 8-pin and one 75W 6-pin PCI Express power connector recommended8
850W power supply (or greater) with two 150W 8-pin and two 75W 6-pin PCI Express power connectors recommended for AMD CrossFire™ technology

2. With size outta the way, look at reviews for the size range in question..... Corsair AX / HX series get a lot of 10.0 performance ratings ..... but some (i.e. 1000 and 1050 watters do rather poorly in comparison) .... Seasonic X series same thing.

Next down ya have the Corsair TX V2 series, XFX Core Edition, Antec HCG / HCP series.

 

[jive]

Hi Jack,
I'm agree completely on what you said, it's supposed to be really easy. the demonstration you`ve done it`s clear for me. But Why there is no sticky about that. In a day on tom`s there is always a lot of question about the psu choice. That's why I ask that question. In i own a corsair HX1000 wa.. When a bought it it was not so bad but now... With all the gold, platinum 80+ certification it looks a bit 'Short' on performance side but it`s ok... For the moment .
Thanks for your answer.

 

[JackNaylorPE]

The HX 1000 (9.0) and 1050 (8.5) never did quite live up tot he HX850s 10.0 jonnyguru performance rating.....but frankly I can't really understand the green obsession in PC building..... yea all other things being equal, I'm all for saving the planet and all but all silver, gold, platinum rating do to affect me personally amounts to pennies a month.

We are talking 2% differences here. So let's assume a 850 watt PSU loaded to 50% (thats high for average laoding) in use for 4 hours a day on weekdays and 8 hours a day on weekends....36 hours a week

36 hours x 425 watts x 52 weeks x $0.10 per kwhr / (.87 eff x 1000 watts per kw x 12 months per year) = $7.62 per month
36 hours x 425 watts x 52 weeks x $0.10 per kwhr / (.89 eff x 1000 watts per kw x 12 months per year) = $7.45 per month

A whopping 17 cents per month !

Im much more concerned with ripple and voltage stability than 17 cents per month.

 

[jive]

HI,
I"m totaly agree with you, for 17 cent a month look more likepublicity scam to me. Anyway, It's also true the HX1000 watt his not egal in peformance compare to the 850 watt. In that time I have two gtx295 in sli, that's need a lot of power, also have 6 Hdd and 3 external car to be connect to some machine. that's the reason why I need a 1000 watts who fit my budget.

Now I don't need all that power but I already have it so I will used it to the end if a can.