How many watt i need?

A 550W unit would be fine for that rig.

Its not the greatest supply, but it will do. If you are buying a PSU, I would look more to a Corsair Enthusiast or XFX Core series unit.

for your build, change the following

-use a h77 motherboard like the asrock h77m
-get a 7850 1gb. some can be found in that price range
-cheaper ram avaliable. from what i know, amazon has some patriot intel extreme masters 2x4gb 1600mhz for 31.99
-get a better case. such as the antec 300 illusion at newegg 49.99 after MIR
-no point of a aftermarket cooler when you cant overclock
-case fans make no difference for me. i wouldnt recommend using more than the stock configuration

at my local shop these part that i only can get
=(
u sure silverstone st60f-es can handle this system at full load?

cause i am first time building pc
i need ask because i worry that this psu can't handle this system
=(

Always better to ask than have the whole thing go up in smoke. Ask whatever you want, that's the whole point of this forum.

The power supply(st60f-es) will run like nothing for that load.

You know what always makes people feel better about it.

i5 750 + 650 ti on a 300 watt power supply  


Ohh and that my i7 2600k(more power) + 5870(power power) takes about 250 from the wall on most games and needs OCCT PSU stress test to get to 360 watts.

run like nothing meaning?
my english not so good can u explain it?  

Think he means that PSU will easily support the power draw of those components.

o~thanks for explaining =)

i am struggling which should i choose as my mobo
gigabyte GA-Z77M-D3H or msi Z77MA-G45
which is better?
changing the mobo won't add extra watt right?

You can get away with a 350-400W PSU easily... Just ignore the people that says you need anything more...

You do not need a Z77 motherboard (since you don't have a k series processor) meaning that overclocking feature is useless.... might as well as go with a cheaper motherboard...

Both are fairly similar, only real difference is that the MSI will support Crossfire/SLI if you wanted too. Looks better IMO as well.

The total power consumption of the motherboard itself is fairly small, including RAM its going to be less than ~20W. Not enough to be concerned about.

i think i am not overclocking the cpu
i should go which a cheaper mobo
which is better?
msi b75ma-p45 or asus p8b75-m lx

Again the MSI, only because it has four RAM slots over the ASUS' two. Otherwise they are identical.

this msi b75ma-p45 and this mobo is micro atx?
can support all the things i want to install right?

yes

does this mobo Supports Intel® Turbo Boost Technology 2.0 ?

You'd be hard pressed to find a modern mobo that didn't.

that didn't supports Intel® Turbo Boost Technology 2.0?
does that mean this mobo supports Intel® Turbo Boost Technology 2.0?  

Any modern Intel board supports Turbo Boost. It will be fine.

Sorry, forgot English isn't your native language. I was saying you would have to search quite hard to find one that didn't support Turbo Boost.

thanks for understanding english not my native language
=)

Best answer selected by JackTan4896.