Question Any reason to avoid ATX 3.0 PSUs?

DrMrLordX

Lifer
Apr 27, 2000
20,846
9,965
136
I'm building a rig with a 7900 XTX soon, so I won't need the 12vhpwr connector (just the old 8-pin PCIe connectors). I'm retiring my P2 750W PSU since it's been in service for . . . quite a while. Probably seven years. It needs a rest.

Would there be any disadvantage to going with a brand-spankin-new ATX 3.0 PSU with available 12vhpwr connector? I'm not planning to upgrade this system at all throughout its life, and given the product release schedules we're seeing nowadays, it'll be at least four years before we see Zen6 (or whatever it is I buy next). Yeah I would re-use this PSU four years from now, but who knows what kind of connectors we'll see then, especially if the 12vhpwr needs a redesign? There's a lot more non-ATX 3.0 options in the 850-1000w 80+ platinum range (which is about where I'd be shopping). So it seems I've at least partially-answered my question: ATX 3.0 PSUs are expensive and have poor retail availability in the efficiency/wattage range I want.

Anything else I should worry about?
 

A///

Platinum Member
Feb 24, 2017
2,986
2,243
136
ATX3 PCIE5 is a standard Intel has set. The 12vhpwr connector is separate from it in a manner of speaker and an nvidia thing they're trying to set as standard The native port on the PSU isn't all too important, because the new RMX Shift is ATX3 and PCIE5 compliant, but it uses Corsair's house designed 8 pin to 12vhpwr. Their 8 pins were designed around providing 300 watts each. There's a few 12vhpwr native port psus but a lot of them are not units I would use myself. My recommendations at the moment are the Silverstone HELA 1200R and the Corsair RMX Shift series. Both are manufactured by CWT but the Corsair is Corsair's own design.

If your case can accommodate the shift, the 1000 watt unit is around $210. Not cheap, but significantly better than most of the market. Alternatively you can grab a normal high watt Corsair and use the associated two 8 pin connector to 12vhpower and not worry about it. 1000 is plenty for a 4090 and a 13900K, thus your own build should be accomodating.
 

A///

Platinum Member
Feb 24, 2017
2,986
2,243
136
Actually $210 for a 1kw PSU wouldn't be too bad. I'll look into it.

eh only a gold unit? Is there a platinum equivalent?
Can't say I've seen one. The RM(x) series is a midrange enthusiast model line while the HX and AX are higher. It would be worth looking at reviews to see if it'll fit your bill instead of casting it aside because it's gold. The Silverstone has the single 12vhpwr outlet to input cable and is platinum. It costs not much more than the 1200 rmx shift. The 1200 shift is 50 or 60 bucks more, with the hela being around 279 on amazon.

If you decide on the shift, I'd contact Corsair and ask if their 1000 unit can deliver the full 600 or if it's tamed because it's 1000 watts. I remember they said something about 600 watts delivery needing a minimum wattage, just saving you a headache here. You can't go wrong with either unit unless the shift can't be used in your case.
 

DrMrLordX

Lifer
Apr 27, 2000
20,846
9,965
136
I like the idea of them speccing 300w per outlet on the psu side, since that would give the unit a lot of flexibility if they offer cables for updated connectors in the event that the 12vhpwr is replaced with something better.

However, I have an old 1300w evga g2 from a mining rig that only ever saw a few years of use that likely has another 5-6 in it, if all I want is a gold unit.
 

A///

Platinum Member
Feb 24, 2017
2,986
2,243
136
I like the idea of them speccing 300w per outlet on the psu side, since that would give the unit a lot of flexibility if they offer cables for updated connectors in the event that the 12vhpwr is replaced with something better.

However, I have an old 1300w evga g2 from a mining rig that only ever saw a few years of use that likely has another 5-6 in it, if all I want is a gold unit.
I had not thought of it like that until now reading your post. although corsair over engineers their in house designs for their good models. they and just about anyone with a brain sees the new connector as some weird crap jh came up with one night after eating too much cheese before bed.
 
  • Haha
Reactions: igor_kavinski

pauldun170

Diamond Member
Sep 26, 2011
9,111
5,031
136
I had not thought of it like that until now reading your post. although corsair over engineers their in house designs for their good models. they and just about anyone with a brain sees the new connector as some weird crap jh came up with one night after eating too much cheese before bed.
Own the 1k version of the shift .
Can confirm smells a bit like muenster.
 

ASK THE COMMUNITY