And now, I promise, my final question: I see the 700W B model from EVGA is just $45 on Amazon.
 
Is there any disadvantage of getting 700W over 500W? Like, will it output more heat (assuming in either case, my PC uses same amount of power)? Will it have louder fans? Will it have a shorter lifespan?
 
Is there any advantage to get it as well? Let's say my system power max draw will be below 300W. Does it make a difference to get 500W or 700W?

Thanks!

himmatsj

CoercionShaman
I may have lost it reading through here as this goes all over the place (apologies if this is the case), but are you sure it will fit?  A lot of those Dell cases have proprietary PSU components and the cases won't always accept another power supply.  If you already did the measurements and/or you are comfortable with drilling any alignment holes then you are obviously good to go.

Wow man are you serious? I never did any measurements, but people were telling me it's a standard size that will fit.

I linked the image of the inside of the case of the PC in OP. Can you please kindly look at it and let me know? Would hate to buy and then realize it don't work. I am not comfortable drilling holes and what not.

I am very much serious.  We use Dell at work and have run into the issue numerous times.  They are getting much better about it, though.  You can literally just measure the PSU you currently have and compare it to the measurements of the one you are planning on purchasing.
 
And I'm with the others on the power.  You can't have too much available and it will only draw what you need.  If you can afford the 700W, buy the 700W.

Also make sure the Fan is not on the Top when you install it, it needs to be on the Bottom or facing down.

himmatsj
Hi guys, need to ask, what about the case fan? How do I power it from the new PSU?

Isn't it powered from the motherboard or the on/off switch panel?

Another question. Can I use my own main power connector?
 
Top right side: http://ecx.images-amazon.com/images/I/71hAKLC7dAL._SL1200_.jpg
 
That one isn't compatible with the standard three pin head in my country. Can I use the cable from my current Dell PC? My country's head is a bit flatter: https://media.cablesandkits.com/p/C9650098a.jpg
 

Another question. Can I use my own main power connector?
 
Top right side: [link=http://ecx.images-amazon.com/images/I/71hAKLC7dAL._SL1200_.jpg]http://ecx.images-amazon....hAKLC7dAL._SL1200_.jpg[/link]
 
That one isn't compatible with the standard three pin head in my country. Can I use the cable from my current Dell PC? My country's head is a bit flatter: https://media.cablesandkits.com/p/C9650098a.jpg



Yes..If need be, you can use the 240V power cord..Virtually all power supplies made these days automatically detect the input voltage or will have a 110V-240V switch on the back that you can change..As long as the unit says the AC Input is 110-240V on the specs, you're good to go because it (and many other types of electronics) is designed to operate on either, no worries..See the attached pic..Power supplies sold on the European market/region/where 220-240V is the norm will come with the proper cord anyway.