Future psu for my mini gaming build.

August 29, 2012 at 02:12:46
Specs: Windows 7
I'm building a "mini" gaming pc. This is what it is now

- Foxconn H67S LGA 1155 Intel H67 (Mini ITX if that's needed)
- Intel Core i5-2500K Sandy Bridge 3.3GHz LGA 1155 95W Quad-Core Desktop Processor
(I'm running the video off of the processor right now, also I'm using the stock cpu fan)
- G.SKILL Sniper 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333
- 500gb Serial ATA/300 7200rpm (Plan on upgrading, came with original pc)
- DVD-Writer DVD-RAM/±R/±RW (Idk if all that is needed, but again came with pc)
-Athena Power AP-MFATX35 350W Mini ITX / Micro FLEX ATX / ATX12V
(I can fit a bigger psu in, but not by too much)

To finish my build I pla on putting in a video card either
- SAPPHIRE Radeon HD 6670 1GB 128-bit GDDR5 (which is low-profile and pci express 2.1)
- SAPPHIRE 100357LP Radeon HD 7750 1GB 128-bit GDDR5 (which is also low-profile and pci express 2.1)

Now I know that Wattage isn't the only thing that matters. The Amps also count and I dont understand electricity as well as you guys might. So I was wondering how much Watts and Amps Id need to run my computer smoothly playing games.

Also if anyone has any suggestion on video cards (of course Id like to know the Watts and Amps I'd need if I put in a different video card) or anything else I'd really like to know.

This was built in an Emachines EL1360G-UW11P. In case anyone would like to know.

See More: Future psu for my mini gaming build.

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August 29, 2012 at 05:08:34
Looks like your case will be the determining factor. If you require a Mini ITX PSU, you're at the mercy of the PSU manufacturers. There's not a huge selection & most of them do not have the necessary specs to handle a gaming rig. If you were to use a standard ATX or MicroATX case, your PSU options would be almost limitless. So would your video card choices.

$80+ for a 400W Mini ITX PSU with only so-so specs?


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August 29, 2012 at 08:05:02
Wattage and Amperage go hand in hand. The issues is that power supply manufacturers fudge on the numbers and/or supply excessive Amps on the 3.3V & 5V rails, which are not used as much as in the past. The real issue is how many amps are available on the +12V rail.

The Conversion is simple. Amps x Volts = Watts. Or in reverse, Watts / by Volts = Amps.

Some high end graphic cards can draw in excess of 25A@12V. See the chart in the link below. Your mini case severely restricts what power supply you can install. If you want to run state of the art graphics & CPU you need to heed the advice in #1 above.


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August 29, 2012 at 08:32:37
U didn't choose your hardware well.
Core i5(Ivy bridge, 65W) + HD 7750 (55W) = 120W
Add the rest of components and u will be able to get away with good 300W unit.

It is sad to see core i5 2500k running at stock speed.

You know the real meaning of peace only if you have been through the war.

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August 29, 2012 at 11:36:31
Actually I have a bit of wiggle room. While I have a mini ITX in the case now I have about another 1" - 1.5" to work with and I know I chose a really small case. It wasn't meant to be a top of the line gaming rig. Its more of a cheaper build before sabing up for my full size. The reason being is because this is my first build. I didn't wanna spend $1000.00 on something I couldnt do.

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August 29, 2012 at 11:39:36
The reason that the cpu is not OC'd is because I'm using the stock CPU fan. Later on I'm goning to replace it with a new cpu fan and throw in a case fan or 2.

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August 29, 2012 at 11:53:42
"The reason that the cpu is not OC'd is because I'm using the stock CPU fan"

You don't need an aftermarket HSF to overclock. Why didn't you just build an entire gaming system from scratch rather than throwing your money at a restrictive SFF system? It seems like the only things you're going to keep from it are the case & DVD burner.


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August 29, 2012 at 12:01:15
But hears the real question. Looking at my computers specs.
Would this video card:

work with this power supply (the 400W that was previously stated):

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August 29, 2012 at 12:15:14
I don't get it? You bought a $300 Walmart special, completely gutted it, & the total in replacements parts is adding up to what? about $500? And that doesn't even include a new HSF, case fans, & a better HDD? So when all is said & done, maybe $900 (or more) invested in a highly restrictive format. I don't understand the logic?


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August 29, 2012 at 12:31:15
Well, I wanted a computer I could use while building it up. My next build is not gonna be really able to be played unless I have everything. So I bought a $300 walmart computer and completely gutted it like you said. But all in all after I get everything I'll have spent around $850 over time. Now that doesnt really seem logical. But I have a friend who's gonna buy it for $900 after I save up a bit and after I finish. Thus creating profit and cutting my next computer down by $900. Essentially I built this to take down the price of my next build over time.

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August 29, 2012 at 13:22:57
Your taking advantage of your friend.

The graphics card you link above is a low power card but also low performance. The card only draws about 43W under load, which equates to less than 4A@12V.

The power supply you mention has 2 +12V rails @16A. Your CPU is rated at 95W, most of which is pulled from the 12V rails. That is almost 8A. So, those items plus system overhead should work.

See the link below for performance comparison.


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August 29, 2012 at 15:48:31
"Now that doesnt really seem logical"

You're right, it doesn't because it's not. You could have built a much better PC from scratch, for a lot less money, that has future upgrade potential. The thing you're building has none. Did you bother to click on the link I posted in my other response? Did you look at the $500 Gaming rig? Even with the cheapie Pentium G860 & 4GB RAM, it will kick the crap out of your $850 Franken-Walmart special.


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August 29, 2012 at 16:27:26
First off, I'm not taking advantage of my friend. He's the one who brought up buying it and we set a price based upon both of us talking. It's not like I'm making him do it nor did I even suggest it. The fact of the matter if that if he called me right now and told me no I don't want it I wouldnt be upset or out of luck because I dont care.

Second off, Riider, this was my first build and I didn't research enough to really take in all of my options. But theres no use crying over spilt milk. I did it its over and there is no reason to insult me or in any other way down talk to me.

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August 29, 2012 at 17:24:50
You are still in the process of spending even more on it. That is why we are down on you. those boxes are not intended to be gaming rigs. Use it to interface with your TV. Don't spend any more cash on it.

Finally, if you don't think you will be taking advantage of your friend, I suggest you think again.

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August 29, 2012 at 18:35:28
So it's wrong for someone to have their own oppinion. I wanna do something most people wouldn't. Make a desktop that can run games fluently in a case that isnt meant for it. I don't understand your logic. If I want to spend my money how I want Im gonna and people downing me about it is just so close minded. I know I could make so much better and I could've made better for less money, you've obviously made that clear, but I've started it why not finish it? If I wanna go against the "right" or "normal" way you automatically down me and try to make me feel bad. Do me a favor and look at the big picture there.

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August 29, 2012 at 20:12:07
IF you get on of these cases for around $20-$25 (Micro ATX mini tower).
And this power supply for $35. after rebate
You come out much less than the $80.00 for the power supply alone to fit that tiny case you have. This would leave you more money to either upgrade the power supply to handle a real gaming card or put into a better graphics card itself.

THAT is what they have been telling you. You still have options, even though you already purchased that machine, including using it as it is or selling it off for what ever you can get out of it. I am pretty sure that the board you selected does not offer the options you will need for overclocking the 2500K you selected. You might actually like these components even better:
or if you go with an ATX case:
and as far as upgrades go:

You have to be a little bit crazy to keep you from going insane.

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August 29, 2012 at 22:20:25
I did answer your bottom line question in #10 and #2. Selling that configuration for $900 is taking advantage of your friend, (in my opinion).

No, it is not wrong for someone to have an opinion. That is what we are expressing here.

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September 8, 2012 at 10:52:24
And for all the people who said that buying this costs me more than it should. It did... 43 dollars more. the computer cost $300 after tax like $303 and some change.
For me to buy windows 7 HP it cost $100 before tax.
It came with a case which I found one close because i wanted a mini ITX that looked like this for $70.
I got a 500gb hdd for the cheapest one I can find its $70
It came with an optical drive $17. Remember these were the cheapest I could find.

Add them up and you get $257.
It would've cost me 43 less to make it from scratch. And before anyone says oh well you could've got a bigger case. I wanted my first build to be a small case. I want a mini tower. My next build is gonna be the big tower thats gonna sit in one spot forever. But this one's gonna be moved alot and I didn't wanna hulk around a huge akward tower.

So yes riider your computer could kick the crap outa mine cause its meant for power. Mine is just a small pc that has great airflow and can run. I don't want to build the ultimate pc right off the bat. I wanted a training one so if I messed anything up it was on a pc that wouldnt be as important. So yes I spent more money and yes I couldve built a better one. But I chose my way and I am gonna comtinue down it.

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September 8, 2012 at 19:49:34
Enjoy it. We really glad it worked out for you, we all were just trying to give you the best advice. A slightly larger case would have given you more options which could have saved you money and been easier to work on. It also would have given you more upgrade options for possible later needs. We also cannot see 'building down' to accommodate old or restrictive components because your choices become "What can I get to work with what I have?" rather than "What is the best I can get for the money I have to spend?"
Again, I am truly glad you are happy with it.

You have to be a little bit crazy to keep you from going insane.

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