Hi All,

Could some one point me in the right direction? :-? I need to know the power ratings for, AT, Baby AT, ATX, LPX, SFX, BTX, etc... Thank you!
what Language is that ? lol, looks like another homework assignment?

(I'm guessing you want mobo power ratings? ) do some research on google and google those BAD boys!Language? - English PSU - Power Supply Unit. Yep, homeowrk for my PC Repair and Networking class.
Anyone? I am having a hard time locating any history on these things...Did you not read honvetops's suggestion? Google. That's how I found http://www.pctechguide.com/11Motherboards_Form_factor.htm and http://www.pcguide.com/ref/mbsys/mobo/form.htm. This was my main search results page: http://www.google.com/search?hl=en&q=pc+form+factor

And, visit a library. Surely, there are some computer books or magazines with some info on the various form factors.

By the way, AT, Baby AT, ATX, LPX, SFX, BTX, etc... are "form factors". And, they are derived mainly from motherboard design standards.

Your comment, "I need to know the power ratings for ...", seems odd to me because you will find a wide range of power ratings for a given form factor. My ATX PSU is only 250W but you can buy them for 500W or higher.

MAN!

Google is sure great!The power rating of a power supply is the output wattage. Depending on type, for example a Baby AT is 192 Watts. As motherboards and mainly cpu's increased in power requirements, power supply manufactors developed ad-ons to meet this demand. They did this by adding the extra 4/6/ and now 8 pin connects along with the 24 pin connector that replaced the 20 pin.

Soybean, there is a difference on mobo and psu form factors. Remember that "form factor" is only a description on the PHYSICAL dimensions, not power ratings. Having SAID that, the links you posted are of no relevance to this topic.

Anyways.... I finally found the info by piecing it TOGETHER. I didn't find a site that sums all of the rating up in one spot, perhaps I will addd it to mine. Thank you all for your input.I see you're ignoring a point I mentioned in my previous post:

"Your comment, 'I need to know the power ratings for ...', seems odd to me because you will find a wide range of power ratings for a given form factor. My ATX PSU is only 250W but you can buy them for 500W or higher."

Actually, the highest rated ATX listed on newegg.com now is 850W: ENERMAX Galaxy EGA850EWL ATX 850W Power Supply 100 - 240V - Retail. And, you say Baby AT is rated 192 Watts. But, here's one that's 300W: Antec PP300V 300W Power Supply PS/2 Size (Baby AT). Your "rating" concept is simply invalid; there is no single "rating" for each type of PSU.