Can this psu handle a sapphire hd 5750

Nothing showed up for me in your link.

sorry this is the good one

http://www.bip.cl/ecommerce/index.php?modulo=busca&id_p...

what ampage does the psu say for 12v rail(s)?

this is the only thing i could find about the psu

http://80plusplatinum.org/manu/psu/psu_reports/FRONTIER...

this is the only thing i could find about the psu

http://80plusplatinum.org/manu/psu/psu_reports/FRONTIER...

That PSU is the absolute minimum according to the card's recommended power supply wattage. However, the actual total power draw for an HD5770 is about 200-250 watt (total system draw). I'm not saying that it's okay to run the card with your power supply, but more than likely it will work. The problem is that your PSU might not be as efficient as a PSU from a well-known company like Corsair or Seasonic. I'd recommend a PSU upgrade just to be safe.

is it safe to run it for like a month or 2 and then upgrade my psu?

It's not recommended however YES it would work. I'd advise upgrading ASAP however. you can pick up some good 400~450w's for $45 on newegg.

if hes shopping off that web site, i don't think he lives in North America so newegg may not be an option

im from chile

whats the worst thing it could happen? if i use this psu with the hd 5750

The PSU could surge and it fries ALL your components cause it doesn't have adequate PFC/Overvoltage/Surge protection.

So basically it screws your WHOLE PC instead of just the PSU.

Thats why I recommended the new PSU urgently!

he hasn't upgraded anything yet so nothing is "urgent"

looks like you have 30a on your 12v and the PSU is tested for 80+ efficient. The ATI 5750 hardly draws any power and most generic 350w units run it. Although that PSU would not be my first choice, it should have no issue with the 5750.

how much better is this psu?

psu characteristics:

Model: PX-550ATX
total maximum: 550W
AC INPUT (115v 60hz): 15A
AC INPUT (220v 50hz): 7A
AC OUTPUT:
+3.3v: 25A
+5v: 17A
+12v: 16A
-5v:2.5A
-12v:0.8A
+5vsb:2.5A
Conectores:
1 x 8 pines
1 x 6 pines
6 x molex
2 x floppy
2 x Sata
1 x 4 pines
1 x 20+4 pines

As far as amperage goes, unless there is some missing information on the PSU you just listed, the 450w is more efficient for the HD5750. The 450w has 29a on the 12v rails. This 550w you listed states only 16a, which seems a bit off...

your current PSU is better, 16a on the 12v is what you find on a 275w PSU. On a 550w is the sign of junk.