Which power supply would I need

Toggle sidebar Toggle sidebar
G

georgescd

Reputable
Mar 14, 2014
7
0
4,510
Hi everyone,

I would like to know which PSU to buy for my HTPC and how much power would be enough for my specs..

My specs are as below

CPU- Intel i5-4570S
GPU - None currently, but might include one later on for 4k movies and games (Sapphire HD7750)
Motherboard - Asus H87-Pro
CPU cooler- Noctua NH-L12
RAM- 8GB Kingston Genesis 1600Mhz (possible addition of 16GB later on)
SSD-Samsung EVO 840 Basic 120 GB
BD-WRITER- LG
PC CASE- Silverstone Grandia GD08B
Hard Drives - 4 x 4TB WD Caviar Green 5400RPM (Possible addition of 4 other disks later on)
PCI cards: wireless card, (maybe a tv tuner later on).

I would also like to get a UPS. SHould the UPS max power be in line with the PSU max power?
 
Solution
nostall
Sort by date Sort by votes
nostall

nostall

Splendid
Nov 28, 2012
3,244
12
23,865
SR-71 hit the nail on the head re. power supply.
About the UPS: Assuming the HTPC is going to be connected to a T.V., do you plan on connecting the T.V. to the UPS?
Not only does the UPS condition power, but it has to have enough wattage and amperage to run your "monitor" long enough for you to shut down the PC in the event of power failure; a 25-30 inch monitor doesn't take nearly as much as say a 40+ inch flat panel television.
Let us know.
 
Upvote 0 Downvote
G

georgescd

Reputable
Mar 14, 2014
7
0
4,510


I am not planning on adding the tv for two reasons: I can configure the PC to go in hibernate mode when I click the power button. And I would have a secondary power source which need around 2-5 min to go on. I just need to avoid having the PC shut down brutally and to protect it from power fluctuation.
Anyway, if I have a 50 inch TV, what UPS power would I need with and without the TV?

Thanks
 
Upvote 0 Downvote
nostall

nostall

Splendid
Nov 28, 2012
3,244
12
23,865
Without the T.V. connected to the UPS, but With a 7750 or equivalent GPU, just about any quality 800-1000VA UPS will work. Here are a couple to consider:
http://www.newegg.com/Product/Product.aspx?Item=N82E16842111034
Tripp Lite OMNI900LCD Omni Smart Digital 900 VA 475 Watts 8 Outlets Line Interactive UPS w/ LCD display
http://www.newegg.com/Product/Product.aspx?Item=N82E16842102131
CyberPower CP850PFCLCD UPS 850VA / 510W PFC compatible Pure sine wave
Those should give you 2-5 minutes run time to put your PC into hibernate by way of your power switch.
A 50 inch T.V. sucks up some serious amps and watts!
Just guestimating, you would probably need something along the lines of a 2500VA (or more) UPS to keep everything running for 5 minutes. Just a brief look at Newegg shows such UPS units starting at $250 (I don't recognize the brand name of the $250-310 unit) and going up. Probably not worth it.
 
Upvote 0 Downvote
G

georgescd

Reputable
Mar 14, 2014
7
0
4,510


Thanks for the quick answer. I guess I will forget about protecting the TV.... Just to be sure, wouldn't it be an issue if the PSU is 550W and the UPS is 475W or 510W like the ones you mentionned?
 
Upvote 0 Downvote
nostall

nostall

Splendid
Nov 28, 2012
3,244
12
23,865


Shouldn't be. The PSU is only going to produce and deliver the amount of power required by your system. The power rating of that XFX PSU is its maximum continuous output at 50 degrees C. Maximum power for your CPU is 65 watts (or 5.5 amps) and that is using the integrated graphics; add the 7750 at 75 watts (or 6.25 amps) and your HTPC is still way below the 550 watts that the PSU can produce. I haven't calculated all the rest of the parts but I doubt that your PC will be drawing more wattage then the UPS can provide at power failure.
Place your cursor on my avatar and review my specs: I am runnig a TrippLite 1000VA UPS and during the rare power outages I get about 5-7 minutes run time.
You can always jump up another notch if still concerned: I am contemplating the Cyberpower 1350 with the pure sine wave.
Couple last things, and sorry for the long post, but I am afraid that is how I write 'em.
Make certain you have a decent surge protector for your T.V. but do NOT plug your UPS into anything but the wall socket. Also, follow the manufacture's instructions for testing your UPS: Do Not just unplug it from the wall - you can eventually kill it.
Lastly, before investing in 4K t.v. or monitors, do some research; 4K viewing requires some really serious video power at this time. There is a really good article in the April 2014 issue of MaximumPC re. this.
 
Upvote 0 Downvote
Solution
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom