• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

ATX 2.0 compatibility help

M

matt80

Junior Member
Hi,

Can anyone tell me whether an ATX 2.2 PSU will work on my ATX 2.0 motherboard? The PSU in question is the Corsair HX520 which says is backwards-compatible with ATX 2.01, but I was wondering whether it is likely to work with ATX 2.0 ?

Many thanks!
 
Welcome to the AT forums if I haven't done so yet.

You can go to formfactors.org to read the current ATX spec and view the change-log (right at the beginning of each version of the spec). I think the main change between 2.0 and 2.2 is the complete dropping of the -5V rail which nothing uses anymore anyway. (The -12V rail won't be around much longer either.) And they added a few more connector types and increased the current rating for the contacts in the P4-12V connector and the ATX connector. They standardized on the 24-pin ATX connector in the ATX 2.0 spec.
. About the only thing you'll need to check if your mobo still has the 20-pin ATX connector is that the PSU has the 4-pin part that you can split from the 20-pin part as the 2.0 spec made the 24-pin EATX (aka EPS-12V) connector the standard. Or if your mobo has some room off the end of the ATX socket opposite from the orange wires, then you could use a solid 24-pin connector and just let the extra 4 pins hang over the end of the socket. That's what I do. Worse-to-worse you could just get a 24 to 20 pin adapter - some PSUs with solid 24-pin connectors come with the adapter, but it is always best to avoid adapters in high current circuits if at all possible.

IAC, an ATX 2.2 PSU will work fine - if you had mentioned make and model of your mobo, I could be more sure - but I'm over 95% sure without the info.

.b.h.
 
Thanks Zepper and RallyMaster.

I can tell you that my motherboard is the Abit KR7A-RAID (yes, there are some still around!). And like I said, the PSU I am referring to is the Corsair HX520.

Will I be able to use the two together without any problems?

Thanks again
 
My earlier message gave you all you need to find out for yourself...

Forum etiquette
Rule 0: It is unlikely that anyone here is your Mama.

.bh.
 
Uh...look at my sig and you will see that I am using an Abit motherboard (although a generation after) and an HX520W. Your motherboard will be fine.
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top