I need a PSU for this BEAST PC!!HELP!!

neilcas · Mar 12, 2013

check out this build pls tell me the PSU needed!!!!!
http://pcpartpicker.com/p/Jef2
and also about the cooler will it be able to cool the Processor!! thanks in advance!!

ronintexas · Mar 12, 2013

I used http://www.extreme.outervision.com/PSUEngine - they say minimum 541W - recommended 591W. So anything 600W+ would be fine.

Two good PSUs:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139012

larrym · Mar 12, 2013

Both of those are nice PSU's that ron listed. Here are a few links to check out as well..
PSU teir list...
http://www.eggxpert.com/forums/thread/323050.aspx

PSU calculator..
http://www.extreme.outervision.com/psucalculatorlite.jsp

Kindredsouls · Mar 12, 2013

The Cooler Master 212 Evo is a great cooler for the money. I like Antec and Corsair PSUs. Here is a good one on sale: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020

If you plan on ever Crossfiring the HD 7950 you may want a slightly bigger PSU. Something around 750 watts: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139006

djangoringo · Mar 12, 2013

A quality psu within 550W will do, for a single card that is, there's the xfx 550 core edition(seasonic unit) for a good price, i recommend the xigmatek dark knight for just a bit more, it's a better cooler, and you can find cheaper ram and a good motherboard for less : http://pcpartpicker.com/p/JexJ

If you plan to crossfire one of these two will do :
http://pcpartpicker.com/part/seasonic-power-supply-ss750am
http://pcpartpicker.com/part/rosewill-power-supply-capstone750m
^it's a superflower unit, it's of high quality too.

ram1009 · Mar 12, 2013

I'm a firm believer in oversize PSUs. I never run one past 50% of available wattage. Yes, it's overkill and yes, it will cost a little more but I think of it as an insurance policy. Running your PSU at or neat max all the time is like running your car in first gear all the time. It will work for a while but it will fail sooner rather than later. I recommend a Seasonic 1050 or 1200.

Kindredsouls · Mar 12, 2013

ram1009 :

Yeah, I agree with you. Power Supplies do degrade over time as well and rarely do they give you the wattage they advertise. When they do that's peak performance. Like your CPU its not meant to run at 100% all the time. If your graphics card says 500 watts minimum then I recommend going at least 600 watts if not 650 watts. I will add this is more based on opinion and experience rather then pure facts or number crunching.

djangoringo · Mar 12, 2013

Quality units can do just well under or about 80% load(even at 100%, 80% e.g. for efficiency) with still good efficiency levels(80% load still guarantees that), in his current configuration, he doesn't need a 1000W psu for a single card, with a 550 quality psu, his system won't pull at full load more than 80% of the psu, it will be less than that, that's totally fine for quality units, since they have good Japanese capacitors, it won't be a problem with the durability or efficiency, a 1000W can fail as a 550W/650w unit, it can happen, or arriving doa.
Of course there's nothing wrong with getting a high capacity psu, but it's not necessary(just optional) and if the op is in a tight budget it doesn't make sense getting it.

Kindredsouls · Mar 12, 2013

djangoringo :

Well yeah, I don't think he should get X2 the wattage. I just like to have little breathing room, and growing room, in my PSU. Who knows if in two years from now he wants to upgrade his GPU and it requires a minimum 550 watt PSU and he's running a 550 watt and perhaps it can't quite cut it? That's why I suggest a 600 or 650 watt PSU. An extra 100 or 150 watts can't hurt and the cost difference isn't huge. djangoringo is technically correct though, when you go by the numbers. A good quality PSU can handle running at 80% load all the time, and the 500 watt number that's listed on the GPU box is typically high balling a lot of things too.

christop · Mar 12, 2013

I would get and 850 Just to have a little more to use later if you add another card or something.

ronintexas · Mar 12, 2013

I use the wattage calculator I referenced earlier - and typically I add 25% to the "maximum use" that it calculates. In this scenario, it calculated 541 W + 25% (135W) = 676W. I also fudged a few items - like adding 2 hard drives, 1 SSD, 4 external USB devices, which should be way more than would be in use at 100% utilization...and recommended a 650W power supply. Over kill would be in the 700W+ range, but acceptable. Anything over that is wasting electricity.

That being said, if you plan on upgrading in the near future (less than 3 years), plug possible upgrades into the calculator. If you aren't buying a top brand (Seasonic, Antec, Corsair) or if it isn't 80+ Bronze, Gold or Platinum, then 25% may not be enough. I have tested off brands that rate close to 1000W that produce a reliable 600-700W, but when you buy a Seasonic, Antec or Corsair, when it says 650W, you get damn close to 650W.

I guess we could get into the argument as to the benefits of powering down the PC vs. leaving it on 24/7....

Ok....off the soap box.

djangoringo · Mar 12, 2013

Kindredsouls :

I was referring to the ram1009 post, in which he recommended a 1050-1200W, there's nothing wrong with going with a 650W-750W or 1000-1200W(but it's just optional, not necessary), all suggestions are valid, but the XFX 550 Core Edition will also do, and ram1009 said that getting a lower unit will degrade it, that's not true, even within 80% load, it will get good efficiency and the psu will last as the others as long as the capacitors and the internal parts are of quality, like the seasonic oem psus, superflower ones, among others.
@ ronintexas in no way it will draw that much with a single card, those calculators are often misleading, the maximum tdp of the 7950 is 200W, it requires ~30A on the +12v rail and a 500W psu, also you forgot to include the xfx brand in there, the xfx psus are all made by seasonic, for crossfire a quality 750W psu will do just fine.

ronintexas · Mar 12, 2013

His computer will more than likely under normal load conditions run between 350-450W. You can really get almost anything you want to power the unit, as long as it would be above the minimum requirements. Running power supplies at close to max capacity (i.e. demand is 400W, and you have a 400-450W power supply) will lead to a shorter life....not to mention if you plug in an external hard drive for backup, you can overload the PSU...so it is always better to go higher by 25% or more, just to be safe.

BTW - I love the looks of a Ferrari, but the speed limit here in Texas doesn't allow anyone to go near the maximum speed of the car...that doesn't mean one shouldn't have one

Buying a "Smart Car" that can't keep up with traffic unless you are going downhill, with a stiff wind, and you are "drafting" the car in front of you doesn't make sense either...

Kindredsouls · Mar 12, 2013

djangoringo :

Kindredsouls :

I was referring to the ram1009 post, in which he recommended a 1050-1200W, there's nothing wrong with going with a 650W-750W or 1000-1200W(but it's just optional, not necessary), all suggestions are valid, but the XFX 550 Core Edition will also do, and ram1009 said that getting a lower unit will degrade it, that's not true, even within 80% load, it will get good efficiency and the psu will last as the others as long as the capacitors and the internal parts are of quality, like the seasonic oem psus, superflower ones, among others.
@ ronintexas in no way it will draw that much with a single card, those calculators are often misleading, the maximum tdp of the 7950 is 200W, it requires ~30A on the +12v rail and a 500W psu, also you forgot to include the xfx brand in there, the xfx psus are all made by seasonic, for crossfire a quality 750W psu will do just fine.

Good stuff all around. I like the discussions, facts, and opinions given here. Things to think about!

djangoringo · Mar 12, 2013

ronintexas :

Check this : http://tpucdn.com/reviews/Sapphire/HD_7950_Vapor-X/images/power_peak.gif
http://tpucdn.com/reviews/Sapphire/HD_7950_Vapor-X/images/power_idle.gif

Even with the cpu and a couple of hdds, a quality one will do just fine, like i said more important than the wattage is the amperage on the + 12v rail and the quality of the psu, the xfx 550 core edition, is more than sufficient(single card) with 44A on the +12v rail, and even with the rest of the system with more hdds, it will not be more than ~80% of the load of it, that's at full load, a quality psu with Japanese capacitors will hold really well under those, there's no shorting the lifespan.
When it's recommended a 500W psu, it's with the whole system in mind for it, not just the card, a quality one is suffice, unless some crazy overclocking on the cpu is added, but the xfx 550 core edition will do, but like i said the other psus(650,750,850,1000,1200,etc) are also valid, it's up to the op, but i'm just saying that a quality psu like the xfx 550 core edition will also do, and it will not affect the performance, or durability of it.
Now if the OP wants to crossfire later on, then, a 750W psu is recommended(it could be more, but a 750 wil do fine).

neilcas · Mar 12, 2013

djangoringo :

ronintexas :

Check this : http://tpucdn.com/reviews/Sapphire/HD_7950_Vapor-X/images/power_peak.gif
http://tpucdn.com/reviews/Sapphire/HD_7950_Vapor-X/images/power_idle.gif

Even with the cpu and a couple of hdds, a quality one will do just fine, like i said more important than the wattage is the amperage on the + 12v rail and the quality of the psu, the xfx 550 core edition, is more than sufficient(single card) with 44A on the +12v rail, and even with the rest of the system with more hdds, it will not be more than ~80% of the load of it, that's at full load, a quality psu with Japanese capacitors will hold really well under those, there's no shorting the lifespan.
When it's recommended a 500W psu, it's with the whole system in mind for it, not just the card, a quality one is suffice, unless some crazy overclocking on the cpu is added, but the xfx 550 core edition will do, but like i said the other psus(650,750,850,1000,1200,etc) are also valid, it's up to the op, but i'm just saying that a quality psu like the xfx 550 core edition will also do, and it will not affect the performance, or durability of it.
Now if the OP wants to crossfire later on, then, a 750W psu is recommended(it could be more, but a 750 wil do fine).

i am only gonna use a harddisk and later i may put a SSD and so will 750 work!!!

djangoringo · Mar 12, 2013

For crossfire(two 7950), yes, a quality 750W psu will do with what you'll have.

neilcas · Mar 12, 2013

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139006
Will this work

djangoringo · Mar 12, 2013

It's decent, but it's not as good as the seasonic/superflower units, that corsair unit is made by channel well, at the same price(not including mir) you can get a seasonic psu(it's modular) : http://www.newegg.com/Product/Product.aspx?Item=N82E16817151107
Or for a bit more the rosewill capstone(superflower unit, it's a good one) : http://www.newegg.com/Product/Product.aspx?Item=N82E16817182264

I need a PSU for this BEAST PC!!HELP!!

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