Forum

Between the two, I would choose the Rosewill. Outside of the two, I wouldn't choose Rosewill. It seems like the Rosewill is made by ATNG and the Antec by Fortron. ATNG is "ok" but not great and off the top of my head Fortron isn't good.

I would say, save up some money, $60 isn't really much to get a quality power supply. I fail to remember what your current one is rated at... Here's my suggestions though that are close to your budget:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139003 - Seasonic. Nuff said.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139004 - Channel Well, not as good as Seasonic but is apparently getting better in newer models.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371015 - Unknown. I'm cautious about recommending this. Their older Earthwatts were great but there's word that they're made by another company now. With that said, I use one of these newer models (EA430) in my server 24/7 and it doesn't have any leaking or bulging caps and is 100% stable. There's also a EA380 in another computer that is used every day and is reliable.

If you can save up to $80 - $100 you would be looking at better options and a better built model that would probably outlive your computer.

Well the 450-watt would be an upgrade, especially if yours isn't a Seasonic. Power supplies are a tough thing though. You can get one rated at X that's made terribly and probably only does X for .5 seconds inside a freezer or something. They tell you what they think the ratings are based upon their test results. They don't tell you how they're tested. Seasonic is one of those brands that is consistently close to or better than spec not to mention excellent build quality.

You can tell who made it by looking at the label:
http://images17.newegg.com/is/image/newegg/17-139-008-S05?$S640W$
By the RU there's a number. That's the UL listing number and tells who actually made it.

Most ways that PSU's mount, the label is pointed outward like so:
http://dl.dropbox.com/u/464376/website/computer/server_v4/DSC06350.JPG

Unless it's a weird mount, you should be able to just open the side panel and peek

Damn OEM's always moving things around...

Here's a good deal for you if you're quick enough:
http://slickdeals.net/permadeal/36466?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+SlickdealsnetFP+(SlickDeals.net+Frontpage)