Does the ATX12V & EPS12V version matter? & EATXPWR EATX12V

[drthrd]

I was thinking about getting 970 PRO GAMING/AURA but I was looking at the manual and it said they recommend a power supply that complies with ATX 12V specification 2.4 . I have a Corsair TX750M. CP-9020003-NA. On the box it says ATX12V v 2.3 and EPS12V v 2.91. I did a search and on Corsair site for that power supply it says Conforms to ATX12V v2.31 and EPS 2.92 standards. I don't know why the difference but does it make a difference or cause a problem or safe to use a power supply that is below version 2.4? I looked at other brands and they don't list what version ATX12V you need. Is that unique to Asus? I also seen in the manual where it said ATX power connectors (24-pin EATXPWR, 8-pin EATX12V). That took me aback cause I have never heard of EATXPWR and EATX12V. How can you tell if you power supply has them and what exactly are they? How are they different and is it safe to use normal ones in stead of the others? Thank you.

 

[UsandThem]

I looked around a bit, but I couldn't find anything that listed the changes going from v 2.31 to v 2.4. Power supplies that claim they are v2.4 compliant have just started showing up, and are higher-end models like the Corsair RM 1000, Corsair AX 1500i, and the Raidmax 850AE. I even looked at the new top-of-the-line Seasonic Prime units, and it doesn't mention v 2.4 on their website or even in reviews like the one from JonnyGuru.com

It should be fine, and you can always try it and as long as the PC is stable, there would be no issue using it. It's not going to 'hurt' your computer in any way. Your PSU supports the fairly new ATX12V and EPS12V standards, so it's not like you are using an outdated unit.

 

[lehtv]

http://www.tomshardware.com/reviews/power-supplies-101,4193-23.html

The main difference between ATX 2.4 and the previous ATX version (Revision 1.30) is the minimum efficiency recommendations on the 5VSB rail, which actually became less tight. [...] There is also a slight change in rise time. In the new ATX spec, the rise time waveform should be a straight line between 10 and 95 percent of its route, while in the previous specification, the range was 10 to 90 percent. A minimum loading condition for the second +12V rail was also added as a requirement, which in the 1.30 spec wasn't required but only recommended. Finally, the CFX12V, LFX12V, ATX12V, SFX12V, TFX12V and Flex ATX guidelines were updated in ATX 2.4.

In essence, it does not matter if your PSU is not ATX 2.4.