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[Guest]

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[Guest]

depends on your CPU. what is it?

but to be quite frank any PSU that cannot provide ~80% of its wattage on the 12 volt rail is pretty much a fail . . . so 12*19=228/.8 makes that a 285 watt PSU.

 

[Guest]

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[nukemaster]

Does it have more then one 12 volt rail? I have a 300 watt with 22amps across 2 rails. Runs a GTX 650 ti just fine.

On that note. Older power supplies delivered a larger percentage of the total power to the 5 and 3.3 volt rails. While newer ones deliver much more to the 12 volt rail(s)[80-90%, while this has nothing to do with 80+ as 80+ is just an efficiency standard] and in fact use DC-DC conversion to get the 5 and 3.3 volt rails.

This gives a power supply that can provide a decent amount of 5/3.3(not that too much of it is used any more) and LOTS of 12 volt power.

 

[Guest]

My CPU is an AMD A6-3650.

thats a 100 watts, the 650 will use around 60 watts. add 5 watts for a hard drive, 15 watts for the motherbaord chipset and 4 watts for each stick of RAM

you would be cutting it very very VERY close . . . can you get this?
CORSAIR Builder Series CX430 $39.99
$19.99 after $20.00 rebate card

yes i know the total wattage is lower but the 12 volt "rail" where you need the power is higher @ 32A.

 

[Guest]

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[Guest]

Does it have more then one 12 volt rail? I have a 300 watt with 22amps across 2 rails. Runs a GTX 650 ti just fine.

On that note. Older power supplies delivered a larger percentage of the total power to the 5 and 3.3 volt rails. While newer ones deliver much more to the 12 volt rail(s)[80-90%, while this has nothing to do with 80+ as 80+ is just an efficiency standard] and in fact use DC-DC conversion to get the 5 and 3.3 volt rails.

This gives a power supply that can provide a decent amount of 5/3.3(not that too much of it is used any more) and LOTS of 12 volt power.

whoa! good question!

edit: this the label 🙁

 

[Guest]

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[Guest]

So what's the conclusion?

I have precisely $100 to spend, no more no less (well, if you don't count shipping into it). I'm trying to squeeze the best performance into my system with such "small" budget.

well there are a few options:

1) get the 650 w/o getting another PSU and see if it works. if it doesn't, your PSU will fail and you may take out the whole rig with it.

2) get the CX430 for $39.99 then use the $20 rebate when/if you get it to buy the 650 for $79.99 and stay in the budget.

3) beg/borrow find somehow to get another $20 to buy everything for $120

4) or get a 7750 for $89.99
PowerColor AX7750 1GBK3-H Radeon HD 7750 1GB $89.99
it uses ~20 watts less and will work with your PSU and equal to a 650's performance.

i wish i could give you the best answer out of those, but that is up to you.

 

[nukemaster]

I would have to agree with looniam on this one. It looks like it could be very close. While I personally have never drawn quite that much power(just shy of 190[at the wall] with OCCT PSU test.) with a similar system, but the system was built to be rather lean.