I would get the Super Flower Leadex VII XG 1000W Gold (SF-1000F14XG)    - 168 €

@crmaris

Thank you very much for the recommendation.
Price just dropped a bit today to 165, guess I'm in luck. 🙂

@crmaris

Hello,

A little update from me.

I have waited a while for the prices to drop, and I am finally in the process of getting the components, I have some, others are under way.

About the PSU, I have ordered:

Super Flower Leadex VII XG 1000W Gold (SF-1000F14XG)

It hasn't arrived yet, so I can still cancel.

But since I placed the order I keep thinking if perhaps there's a better choice.

I can get this for 15 euros more:

Corsair RM1000x 1000W Gold (CP-9020271-EU)

Please, what is your opinion, should I cancel the Super Flower or I am worrying for nothing?

Thank you.

The SF PSU you got is very good. No reason to cancel it

@crmaris 

Thank you so much!

I'll keep it.

I'm also planning to get a Cyberpower CP1600EPFCLCD ups to keep the system as safe as I can.

@crmaris 

Hello.

Okay so the SF 1000 XG PSU has arrived. I haven't open the box yet, but I know what the contents are.

You said there is no reason to change it for the RM1000x 2024. But it seems there are a few reasons.

I will try to present everything without external links.

Okay the standard Corsair 12+4 pin to 2x8 pin cable is part nr. 8920284 (flat cable). This one has receptacles inside the two slots for the sense pins (on the 8 pin connectors) but no wires coming out and no wires going into the sense pins on the 12VHPWR connector.

However this cable apparently is rated at 105°C.

A better and more expensive cable has part number 8920332 (sleeved). For this one a seventh thinner wire goes from the 8 pin connectors all the way to the two sense pins on the 12VHPWR connector. Now these sense pins probably don't do anything but even so visually speaking the cables look higher quality than the SF ones, without taking into account the temperature rating.

The only real advantage of the SF PSU over the Corsair are the 2x8 pin connections of the cable, I know your opinion about this and your preference for 2x8 pin instead of native 12V-2x6 on the PSU side.

But now I realized that I can avoid the 12V-2x6 on the RM1000x by buying one of the cables mentioned above and connecting it to two 8 pin sockets. This way I will spend a lot of money but in the end I will be close to having an excellent PSU and accessories. I would have preferred to keep the SF PSU, for my case it is no problem, I agree that it can be seen as overreacting. Now I will also pay some money to return the PSU, so in the end the RM1000x will cost me more than 200 euros, probably 230 with an additional cable, but if it's worth it then so be it.

But to keep it means sending the wrong message to SF, that it is ok to go cheap on the cables because people will buy anyway due to lower price.

I agree that it is good to have competition and more products to choose from, but in this case there is no competition, Corsair is more expensive not because of brand but due to higher quality.

Another aspect is the 12VHPWR plug on the cable and which type of receptacles it has, either 3 dimple Astron or 4 leaf spring NTK. I don't know for SF, I won't open the box to check, but for Corsair I'm pretty sure it's NTK design.

Unfortunately PCI-SIG didn't enforce PSU makers to use a higher temp rating (105) and also to use only NTK receptacles. And so we got to a situation where you can buy a great PSU with mediocre cables.

I hope that from your expert position you can influence some of these decisions through your direct feedback, nVidia made this mess, but other parties didn't do their best to fix as much as possible. And some try to save money on stuff that isn't negligible.

So unfortunately SF needs to fix some things, and put the same effort and care into the accessories as well not just the PSU unit itself.

Thank you and have a great day.

Corsair's RMx line is one of the best on the market today. About SF, I will make sure they read your comment 🙂

@crmaris 

Hello,

Thank you for responding.

In the meantime things have changed.

I've discovered new information that cleared a lot of things for me.

To provide a bit of context, it all started with a topic on TPU called "PSU recommendation for RTX 5090".

The SF 12VHPWR cable came under discussion because of the 80°C rating on the wire insulation.

This lead to a conversation with Jonnyguru who considered the rated temp too low and that most vendors that he knew used 105°C rated cables, and that of course Corsair also uses 105°C rated cables.

Seeing this I started searching for more info because having bought the SF 1000 XG I had the same cable.

And I've found the following info:

1. The SF 12VHPWR cable connector has the best contacts -> 1 slit, 4 leaf spring NTK design.

2. I've found other cables that are identical/similar to the SF one part nr. SF2PCIE-16P(I) (60cm):

- Enermax part nr. EMC060-F (60cm)

- Phanteks part nr. PH-CB-12V16P_WT01 (75cm)

- Seasonic part nr. SS2XSP-12VHPWR-600 (75cm) -> this has mesh on each wire so the markings aren't visible but apart from that detail the rest of its appearance is very similar to the previous ones.

- Seasonic sleeved, included with Seasonic Prime TX-1600

All of these (except Seasonic with mesh) share the following markings on the insulation: 16AWG 80°C 300V

They also have 2 empty slots on the 8 pin connectors.

3. I haven't found a single picture online of a cable using 16AWG and having 105°C written on it.

4. The 105°C rating seems to come from the "octopus" adapter. A few years ago Igor tested one, then Gamers Nexus made a video testing several, and Jonnyguru also has a page with testing on his website. These 4-way adapters indeed have 105°C marked on the wire insulation but they're also 14AWG not 16.

Also possibly contributing to the confusion is the rating of the connector itself (the plastic housing) which is 105°C.

With that said, considering this new information I see no reason for concern. Therefore I will keep the SF PSU as nothing is wrong in my opinion with the cable, and the PSU unit is very good.

Changing the PSU now is an unnecessary hassle and extra expense for me as I'm waiting for the final parts to arrive.

Please excuse the wall of text, but I wanted to be clear.

I also hope I wasn't overly critical in my previous post, but at that time I was confused and dissapointed. I wrongly assumed the cable was low quality.

If you have any additional info on this subject I will appreciate it and I will pass it along on that topic so that others would benefit from it.

So thank you again for your help/advice.

Have a great day!