2007-07-11 02:53:11 · 4 answers · asked by SHAMROCK 1 in Computers & Internet ➔ Hardware ➔ Other - Hardware
AT is for OLD computers (>7 years old).
ATX V1.3 has low efficiency and not so strong +12V rail. ATX V2.01 is better but ATX V2.2 is best; and they have both strong +12V rails (dual or more). Current motherboards supply the processor from the +12V rail. Most graphics cards, fans and motors of HDD, FDD and CD drive are powered by the +12V rail.
2007-07-11 03:06:43 · answer #1 · answered by Karz 7 · 0⤊ 0⤋
You will be hard pressed to find an AT style power supply these days. The biggest difference between the AT and the ATX power supplies, is the AT power supply was soldered to the motherboard and the ATX power supply uses removable quick connectors. Most all power supplies sold today are ATX style. There should be a label on the side of the power supply you currently have that will tell you what size it is listed in total Watts Output. I recommend you get at least that size but you should also consider getting one that is slightly larger should you later decide to add any additional options that draw power too, most computers that come from pre-built manufacturers like Gateway, Dell, HP, Compaq, etc. only put in the minimum sized power supply for the spec of the build you purchase. If you add anything later that draws power like another hard drive, another optical drive, a video card, you might end up having to upgrade your power supply also.
2007-07-11 10:23:43 · answer #2 · answered by John S 4 · 0⤊ 0⤋
they are different form factors for desktop pcs. at is an older form factor although still used while atx is the newer more common one. most likely ur looking for the atx power supply.
2007-07-11 10:10:40 · answer #3 · answered by jcjunkact 4 · 0⤊ 0⤋
its a typo
2007-07-11 09:57:39 · answer #4 · answered by Anonymous · 0⤊ 0⤋