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1403 posts

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  #736543 23-Dec-2012 12:54
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Kyanar: I still highly recommend a modular power supply if possible - that way you don't have so much cable mess permeating the case (should get you slightly better airflow too!)

550 will be fine as Krishant says for that spec - but if you expect that you'll be adding much more later (e.g. USB peripherals, extra graphics cards, more than a few fans) you might want to move up to a 600W to ensure you have some buffer room.

Remember- USB devices count towards the total (they draw a couple of watts max), as do the internal fans (usually 1.5-2W each, more if it's a fancy Cooler Master type fan with a control panel and LED and suchlike).

Also, in my experience, Gigabyte is terrible for motherboards. After RMAing three Gigabyte motherboards in a row I swore I'd never by their mobos again.


I agree with the modular power supply bit. The less wires you have in your systems, the better the airflow and heat dissipation. 

And yes its true about the fans etc. They will all chew power. And generally it is better to be overpowered than to be underpowered. 

But that doesnt mean go get 1000W power supply. Go to the bear minimum of what you need and increase it by 50% or less to be safe i reckon.

I used to have a 350W power supply in my last machine that used to power a Quad core Q6600 processor, a Nvidia 8800GT gpu, 8 USB ports, Wireless card, harddrive and DVD drive. That was a Dell build and not a custom build btw.

15827 posts

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  #736569 23-Dec-2012 14:59
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You can save quite a bit by building it yourself, and also quite fun too. But you do need to have a bit of knowledge about computers. I saved about $600 on my last PC. Cost me $1400 to build in parts, while my local PC store was going to charge me close to $2000, mainly because their parts were more expensive/higher margins, but it was identical specs. That is quite a saving. I always buy top brand components like asus, intel, crucial, and get a good quality power supply.
I have had some PCs puilt in the past by comptuer stores, and they have been a bit of a mess inside, with bad cable arrangement and ties. When doing it yourself, you can take more care in the placement and arrangement, and make sure things are tied back well. 

 
 
 
 




36 posts

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  #736577 23-Dec-2012 15:58
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Hmmmm....
All the good priced ones are 500w.
Is that enough?



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  #736578 23-Dec-2012 16:01
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Also, is antec a good PSU manufacturer?

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  #736580 23-Dec-2012 16:06
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Antec is quite popular, so must be decent. Also, 500W would be minimum i reckon. I just saw that 560gtx has max power of 160W..

If you just have the one GPU, a just the one HDD and DVD drive, then you should be good. If you wish to put in more hard drives in the future, you may want to get 550 or 600..




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  #736584 23-Dec-2012 16:15
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So, if i want to put 2 hard drives in, i will need 550w? (One oldish one and another old-new one)



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  #736587 23-Dec-2012 16:25
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New price of parts (changes in bold):
Cpu: Intel 3rd Genration I5-3330 @ 3.0ghz $256.45 from pbtech 
Gpu (the best part): Galaxy Geforce GTX560 smart edition 1.5gb $192.28 from alpha city 
Psu: 550W Aywun MEGA POWER PRO Series 80PLUS Bronze Certified Power Supply $78.48 from alpha city
Ram: Kingston 4gb ddr3 1600mhz x2 $28.88 each from alpha city 
Morherboard: Gigabyte GA-B75M-D3H $69.78 from it xpress (surprisingly cheap) EDIT: it is a refurnished motherboard so i'm not sure if to get this.
Hard Drive (If needed): Western Digital 1tb Sata3 64mb Cache (model WD10EZRX) $114.50 from elive 

 
 
 
 


1403 posts

Uber Geek


  #736589 23-Dec-2012 16:38
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You basically have more breathing room with a 550w if you have a couple of hard drives in there. There are many online calculators which help you determine the minimum power supply requirements for your rig.

I used a couple in the past when I was making a build and saw that 500w is generally what an average rig would need at max.




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Geek


  #736590 23-Dec-2012 16:41
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Any PSU calculator websites you can recommend?



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  #736591 23-Dec-2012 16:49
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oops nvm, found one.



36 posts

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  #736592 23-Dec-2012 16:50
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It says i need a 380w PSU for all my stuff..
Meh, still go with 500w just to be safe...

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  #736594 23-Dec-2012 16:53
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ya...thats the power all your components require.. and since PSU are not 100% efficient, you need to take 550w, multiply it by 80% to see what is the power that the PSU will actually supply...so that is 400W..in that way, 500w psu would be just enough to power all your components if they were to max out. So with 550, you are safer..



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  #736600 23-Dec-2012 16:59
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alright then. this should solve the problems until i buy the products on boxing day.



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  #749390 23-Jan-2013 10:51
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If anyone is reading this, I haven't got the parts yet because after a negotiation with my dad who was going to pay for it, we decided to buy it at the near end of holidays. This, has leaded to me doing more research and now , I have decided to change the parts:
CPU: I3-3220: $160 http://www.alphacity.co.nz/index.php?main_page=product_info&cPath=67_384_546&products_id=111303
MOBO: Refurbished Gigabyte GA-H61MA-D3V $45.79
http://www.itexpress.co.nz/epages/shop.sf/en_NZ/?ObjectPath=/Shops/itexpress/Products/MGI%23174A
PSU: 550W Aywun MEGA POWER PRO Series 80PLUS $78.86 http://119.47.125.81/index.php?main_page=product_info&products_id=99020
GPU: Sapphire HD7850 GHZ EDITION 2G GDDR5 $318.90
http://119.47.125.81/index.php?main_page=product_info&products_id=110014
RAM: 4GB ddr3 1600mhz hynix $28.18 http://www.itexpress.co.nz/epages/shop.sf/?ObjectPath=/Shops/itexpress/Products/000000000002026494

TOTAL: 637.88
+Extra 4gb ram: 666.06

I am now going to purchase these sometime before the 28/01

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