Mathieas
Hi all,
 
I am currently running one of EVGA 1000W T2 PSU. It is only a couple years old but I worry that 1000W will not be enough for the up coming 4090/4090TI with ample head space. I noticed that the 1600W P2 PSU is currently on sale for a killer deal and was tempted to pick it up in preparation for the 4000 series. Is there any reason to worry about incompatibility issues with the new 4000 series or Raptor lake CPUs needing a ATX 3.0 PSU? Is that information out there at all? 
 
Thank you!

i wish i knew too, but i have a good idea -- thanks to this thread, as i was reading the OP it just popped into my head. (ty Mathieas! u asked just wat i was wondering... because of the sale prices that i too noticed last night.)
 
so here's said idea...
 
1. i went to the PSU EVGA Power Meter Page:
https://www.evga.com/power-meter/
 
2. i added all my hardware -- no OCing -- but instead of just the one current GPU i have, i selected two of my GPUs. (added a 2nd.)
 
3. and the result was... "Wattage Calculated: 1115".
 
4. a single EVGA RTX 40 series vid card can't need more than 2x3090FTWs, right? (my guess for the time being is, no. dude!?lol but wat do i know very little, right? hopefully others will chime in.)
 
so i was shopping for the 1200 EVGA P2 last night, because i already have an EVGA 1600 P2 -- unboxed. bought it a few years ago -- it was $300+ off believe it or not... yes it was!lol and i was thinking back then that for SLI it might be needed eventually -- never thought SLI would disappear for all but top of the next series.
 
my conclusion last night is to just wait. i could grab the EVGA 1200 P2 now. it's so tempting at 51% off. and after all, i'd be completing my collection of P2's (would have 1000, 1200, and 1600). but i might as well invest the money in another way. like maybe just throw it into the emergency hardware purchase fund that i keep. (or see next...)
 
Plus/or just biting the bullet and taking the pain (later), meaning using the money to pay the extra amount for a newer technology PSU -- that say has the new connectors built in for an EVGA RTX 40 series. And i bet EVGA will have some great PSUs like that. So, estimation-wise -- what will EVGA charge? IDK but i trust them. and i luv buying from them directly or from one of their  approved distributors. the money i keep on the back burner will help pay for it.

@yaymz,
 
sweet! u sound like u know a lot about PSUs! 
 
so current PSUs are ATX 2.0?
 
and the RTX40 series can/will run on ATX 2.0 with an adapter they will include in the box; but why not just go for/ wait for ATX 3.0 and bite the bullet, right? (but then i like reading reviews and researching tech.)
 
TY again!

yaymz

Bee_Dee_3_Dee
 
so current PSUs are ATX 2.0?

Correct.  2.0 came out almost 20 year ago so it was due for a refresh, but there really wasn't a good reason to until now.
 

Bee_Dee_3_Dee 
and the RTX40 series can/will run on ATX 2.0 with an adapter they will include in the box; but why not just go for/ wait for ATX 3.0 and bite the bullet, right? (but then i like reading reviews and researching tech.)

Right.  I'm waiting for ATX 3.0 myself.  Interested to see Corsair's replacement for the ax1600i along with what beQuiet comes out with.  Would also consider EVGA's next gen PSUs.. will just have to wait and see.
 

 
ty
 
ty


but is the "i" part (features) in Corsair's ax1600i worth it?
 
i used AX850 and AX860. (Both OEM Seasonic, right?) luved the perfect reviews they got.
 
i know all the AX series all got the best scores on JonnyGury... omg the founder of JonnyGuru worked at Corsair 2018? (just GIDed "JonnyGuru".) i wonder if he's still there. i forget when JonnyGuru dot com shut down. but when it was around i read all the reviews there everyday. i laughed so many times because of the style of reviews they had. and learned wat PSU to buy too.
 
i'm planning on supporting EVGA and sticking with their PSUs from now on. after all, i don't OC. and so long as a PSU is 99% as good as the best i'm fine.
 
 

If NVIDIA wants to see the 4000 series flop they would require a PSU that practically nobody has to use the cards. At that point you might as well just say it takes a PCIe 5.0 slot to use one. While I can't say for 100% I think it's pretty safe to say it will use an adapter since ATX 2.0 is what everyone has.

Bee_Dee_3_Dee
 
 
i know all the AX series all got the best scores on JonnyGury... omg the founder of JonnyGuru worked at Corsair 2018? (just GIDed "JonnyGuru".) i wonder if he's still there. i forget when JonnyGuru dot com shut down. but when it was around i read all the reviews there everyday. i laughed so many times because of the style of reviews they had. and learned wat PSU to buy too.
 

He still works there.  Gamer Nexus did an interview with him a month or two back at the Corsair lab.  

yaymz

Bee_Dee_3_Dee
 
 
i know all the AX series all got the best scores on JonnyGury... omg the founder of JonnyGuru worked at Corsair 2018? (just GIDed "JonnyGuru".) i wonder if he's still there. i forget when JonnyGuru dot com shut down. but when it was around i read all the reviews there everyday. i laughed so many times because of the style of reviews they had. and learned wat PSU to buy too.
 

He still works there.  Gamer Nexus did an interview with him a month or two back at the Corsair lab.  

 
cool. ty
 
and i'm still using my CORSAIR CMPSU-620HX in an HTPC that runs 24/7.
 
Purchased it 06-03-2008 far a Gaming Rig. Put it in my HTPC in 2011. A single example of its superior design is how multiple times over the years i've witnessed it remain on when everything in my house turned off during brief brown-outs.

ty_ger07
Until the next GPU generation is announced, I wouldn't assume anything about their power requirements or compatibility requirements.
It is really tempting to snag a good deal offered for an older PSU, but I would also be hesitant and wonder what they know that is causing them to appear to be trying to get rid of old PSU inventory while they can.

 
how about a single RTX40 series might need as much as 3 x RTX3090? 
 
for my current rig i bet a 1600 watt PSU would be enough.
 
just today for the 1st time in one year, prices overall on the internet came down.
 
instead of biting onto a PSU on sale now i'm going to invest in a 1TB SSD i think my old HTPC might need. it still has an old mechanical drive that needs to be ruled out as what is causing a problem. 
 
 

rjohnson11

Bee_Dee_3_Dee

yaymz

Bee_Dee_3_Dee
 
 
i know all the AX series all got the best scores on JonnyGury... omg the founder of JonnyGuru worked at Corsair 2018? (just GIDed "JonnyGuru".) i wonder if he's still there. i forget when JonnyGuru dot com shut down. but when it was around i read all the reviews there everyday. i laughed so many times because of the style of reviews they had. and learned wat PSU to buy too.
 

He still works there.  Gamer Nexus did an interview with him a month or two back at the Corsair lab.  

 
cool. ty
 
and i'm still using my CORSAIR CMPSU-620HX in an HTPC that runs 24/7.
 
Purchased it 06-03-2008 far a Gaming Rig. Put it in my HTPC in 2011. A single example of its superior design is how multiple times over the years i've witnessed it remain on when everything in my house turned off during brief brown-outs.

ty_ger07
Until the next GPU generation is announced, I wouldn't assume anything about their power requirements or compatibility requirements.
It is really tempting to snag a good deal offered for an older PSU, but I would also be hesitant and wonder what they know that is causing them to appear to be trying to get rid of old PSU inventory while they can.

 
how about a single RTX40 series might need as much as 3 x RTX3090? 
 
for my current rig i bet a 1600 watt PSU would be enough.
 
just today for the 1st time in one year, prices overall on the internet came down.
 
instead of biting onto a PSU on sale now i'm going to invest in a 1TB SSD i think my old HTPC might need. it still has an old mechanical drive that needs to be ruled out as what is causing a problem. 
 
 

A single RTX 40 series will not need power equaling 3 RTX 3090 video cards. More power will be needed, but not that much. 

The full fat 18432 cuda core chip is reported to come with a 900w tdp. 

If you go on rumor alone, and depending upon the other peripherals you might have, your 1000W PSU might be just fine, especially in light of the recent rumor on the subject:
NVIDIA GeForce RTX 4080 latest: 320W power, previously rumored at 420W | TweakTown 
I'd agree with the others that it might be best to wait, unless you have spare change and want to take advantage of the PSU prices right now.

Thank you all for the discussion and advice! It is very much appreciated. As many in the post have said, it may be prudent to wait for the 40 series to release and make a choice when the actually requirements are known. I have decide to follow this advice and wait, worst case I lose a few hundred dollars by missing the sale but will gain a PSU with the newest standards applied. 

Mathieas
Thank you all for the discussion and advice! It is very much appreciated. As many in the post have said, it may be prudent to wait for the 40 series to release and make a choice when the actually requirements are known. I have decide to follow this advice and wait, worst case I lose a few hundred dollars by missing the sale but will gain a PSU with the newest standards applied. 

So glad I found this.  I had been pondering the same and I think I'll be heading down the same path.
 
Of course ATX 3.0 won't be a requirement for 4xxx or new motherboards but a native connection is most likely with adapters for "old" (current) PSUs.  We all did this dance when we moved from AT to ATX.  It took some time and many adapters but we all got their eventually.

PCIe 5.0 and ATX 3.0 specs and the 12 pin connector, understanding what the specs includes is part of understand the complexity. In those 12 pins in the spec, the addition of a 4 pin connector is decicated for communications between the device and the PSU, which in current iterations of supplies, I don't think are supported or implimented at this time on PCIe 4.0 cards like the RTX 4000 series.

Using 2 dedicated 8 pin PCIe connectors at the PSU to one 12 pin adapter solves the issue with enough 16AWG lines to the card for current, but some supplies may not have enough 8 pin PCIe connectors at the PSU on our current non-ATX 3.0 supplies, not to mention the primary concern for this new style connector, underpowered PSU's for use with these newer designs like the RTX 4000 class.

A 1600W PSU requires a 20amp service, when in the US for example, almost all homes utilize NEMA 5-15 outlets, which are underrated for that PSU. New dedicated power may need to be run.
 

I am grabbing the 1600 P2 for $209 in anticipation of the 13900k and 4090. It seems to be better reviewed than some of the newer PSUs from EVGA like the G+ and P+. They seem to have coilwhine issues. 

Hopefully we won't all accept this is as a long-term solution and will eventually demand a GPU designed to regulate itself.
Intel's GPU VRM design is admirable.

Since the 40 Series cards have not been officially released, I can't give you a straightforward answer on that.  However, the purpose of the adapter is to work with existing power supplies that do not have the newer 12VHPWR cables.  As long as the adapter is installed properly, you shouldn't have anything to worry about.
 
I would be surprised if you don't see more than a few reviewers test current-gen power supplies with the 40 Series when they release to answer this question for people.  I'm sure we'll also say something directly about compatibility at some point, as well.

EVGATECH_LeeM

Since the 40 Series cards have not been officially released, I can't give you a straightforward answer on that. However, the purpose of the adapter is to work with existing power supplies that do not have the newer 12VHPWR cables. As long as the adapter is installed properly, you shouldn't have anything to worry about.

I would be surprised if you don't see more than a few reviewers test current-gen power supplies with the 40 Series when they release to answer this question for people. I'm sure we'll also say something directly about compatibility at some point, as well.

I have seen that the problem with overheating from these adapters can come from bending and that they only last about 30 connection cycles (plug/unplug).

Could you tell me anything regarding connection cycle life of EVGA’s 2 8 pin pcie to 12vhpwr adapter?

Have you heard of any problems regarding overheating/melted connectors from the 12vhpwr to 2 8 pin adapter that’s being sold by EVGA?

Also last question, what is the maximum wattage supported by the 2 8 pin pcie to 12vhpwr adapter from a 1000w EVGA PSU? Thank you.