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Call for comments: a lightweight ITX Ivy Bridge build - Page 2

post #11 of 30
There are two parts for Pico-PSUs.

The AC-DC converter (aka the brick).
media.nl?id=55&c=ACCT127230&h=6301348ec6398c9c3f28

The DC-DC converter (what sits inside the case).
picoPSU-120-big3.jpg

Things to consider:
The AC-DC converter needs to match the specs of the Pico-PSU. If the DC-DC converter can only take 12V makes sure the AC-DC converter outputs to 12V. This needs to be mentioned because many bricks will output to 19V instead of 12V. There are some wide voltage Pico-PSUs that can take a 19V but just check to make sure.

It needs to be the level of the Pico-PSU if you want to use full power although it isn't required. A 120W Pico-PSU can be mixed with a 102W brick for example. The max power is determined by the weakest link in the chain, whether it be the brick or the pico-PSU.

Lastly, high wattage AC-DC converters will utilize a 4-pin din jack instead of a single pin like what is pictured above. This is used for plugs that need greater than 9 Amps.
AC-DC-12V-12-5A-b1.jpg
Quote:
Prime95 + Furmark (Full loading) 127.1 W
Source
Anandtech did some testing with the 3770K and a mATX board.

Power2D.png
Source
Hexus also did power testing and got lower so I am not sure which to follow. I would presume the chip you are using will use less power than either of these chips but who knows.

The most common Pico-PSUs go:

120W $39.95
150W $45.00
160W $49.50

There isn't much difference in price between them so I'd probably just go with the 150W. Note that the 120W is a 20-pin while the 150W and 160W have 24-pins. Also the 120W doesn't have a 4-pin mobo connector. You have to buy a 4 pin splitter and attach it where the wires come into the case.

If you go 150W get this power brick.

The low wattage 60W/90W are really meant for Zacate (E-350) or Atom builds.

Prices for these are probably cheaper if you look around. I just wanted to use a central location for parts. Good luck. thumb.gif
Edited by armourcore9brker - 4/30/12 at 1:34pm
     
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post #12 of 30
Thread Starter 
Quote:
Originally Posted by armourcore9brker View Post

There isn't much difference between them so I'd probably just go with the 150W. Note that the 120W is a 20-pin while the 150W and 160W have 24-pins. Also the 120W doesn't have a 4-pin mobo connector. You have to buy a 4 pin splitter and attach it where the wire come into the case.
If you go 150W get this power brick.
The low wattage 60W/90W are really meant for Zacate (E-350) or Atom builds.
Prices for these are probably cheaper if you look around just wanted to use a central location for parts. Good luck. thumb.gif

Thanks for such a definitive guide! I plan to start ordering parts while waiting for the Zotac H77 to be available. Will share my experiences here thumb.gif
post #13 of 30
I am not sure how much power ivy needs, but you can always grab this case/psu by Antec. It actually comes with a good psu. thumb.gif
http://pcpartpicker.com/part/antec-case-isk300150
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post #14 of 30
Thread Starter 
Quote:
Originally Posted by Ironman517 View Post

I am not sure how much power ivy needs, but you can always grab this case/psu by Antec. It actually comes with a good psu. thumb.gif
http://pcpartpicker.com/part/antec-case-isk300150

Another nice option. I was wondering whether the DVD drive panel is removable... I don't quite need DVD...
post #15 of 30
Thread Starter 
Just went through the power consumption measurement mentioned by @armourcore9brker and also this: http://www.anandtech.com/show/5771/the-intel-ivy-bridge-core-i7-3770k-review/20

If i7-3770 is within the 160W power envelope (highly likely), that would be a very attractive CPU choice to me as well.
post #16 of 30
Quote:
Originally Posted by thracia View Post

Another nice option. I was wondering whether the DVD drive panel is removable... I don't quite need DVD...

I am sure you can break it to remove it tongue.gif
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post #17 of 30
Quote:
Originally Posted by thracia View Post

Just went through the power consumption measurement mentioned by @armourcore9brker and also this: http://www.anandtech.com/show/5771/the-intel-ivy-bridge-core-i7-3770k-review/20

If i7-3770 is within the 160W power envelope (highly likely), that would be a very attractive CPU choice to me as well.

The i7-3770k draws 77 watts.
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post #18 of 30
Quote:
Originally Posted by coachmark2 View Post

The i7-3770k draws 77 watts.

My retail box says 95W TDP for what its worth.
post #19 of 30
Quote:
Originally Posted by minnus View Post

My retail box says 95W TDP for what its worth.

Power draw and TDP are not the same thing. It is listed at 95 TDP because Intel couldn't contain the heat with 77-watt-spec coolers so they bumped it to 95watts. It only consumes 77 watts.
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post #20 of 30
Thread Starter 
Quote:
Originally Posted by coachmark2 View Post

The i7-3770k draws 77 watts.

Thanks for the info. I guess that those 3rd parties measured the power for the entire machine, while Intel's number (77W ) is for the CPU only.

That said, I suppose that the overall power of an i7-3770K itx would be within 160W, given that I do not use discrete gfx?
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