I wouldn't go with either PS listed there.
For those not wanting to click on his links, he posted :
680w ATX PCI Express SLI SATA Power Supply PSU BK
Brand listed in the picture was "POWORK"
on Ebay for BiN $32.99
WT POWER 575W Power Supply
on wgDirect for $34.95
Obviously with your setup you don't need a huge PS. However, while I wouldn't tell you to get a 1300W ABS Tagan, I don't think your budget system deserves a "grab bag" power supply.
I agree, you don't ALWAYS have to go with a brand name product in life. Sometimes you will save a few dollars, just recognize that some names are big for a reason, and usually (not always) it's because of a good track record. This is achieved through the use of higher quality materials and standards, and more investment into R&D as well as proper testing and even customer service.
Another thing... Order from a reputable site like NewEgg or [insert other big named hardware site here]. That way, should there be a problem with your product, you have someone to rely on to get you helped out. RMAing is not fun even with the best of sites, but some places make it so much of a hassle that I have just cut my losses and taken the loss as a "lesson learned."
At some point, saving money by sacrificing quality for a no-name brand, with a generic product will start to COST you. Especially when you're further trying to save by going with the lowest bidder. Maybe it's a year down the road and it takes out your MoBo. How much is that to replace, along with another new PS?
IMO the PS is one of the most important parts of your system, if not THE most. It's has the most potential to hinder, or even destroy your hardware. My friend had an overworked budget PS blow up in his case, fried his system, and caught fire. Good thing it only cost him $50 because it was TOTALLY worth scrubbing the black off his ceiling (Oh, and nothing is quite as enjoyable as the enticing scent of stale electrical fire).
In short, go to
this link @ NewEgg for best rated PS between $50 and $100
Right on the top of that list is a 500W PS with great reviews that has a $30.00 mail in rebate, taking it from $69.99 down to $39.99!
Thermaltake Purepower W0100RU 500W ATX 12V 2.0 Power Supply - Retail
Summary:
Get a name brand
Buy from a reputable COMPANY
Search for a good price, don't MAKE one happen by finding the cheapest option available.
I hope this helps you, but please, do yourself the favor, and don't buy EITHER of the supplies that you listed.
-DwighT