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All this gobbledegook is on the dodgy cooling fan's centre hub face:

• Intel
• E97378-001
• CNSH4492M4
• F90T12NS1B7-64A01C1
• DC12V 0.28A
• NIDEC

Otoh this cpu info is on my 2015 Invoice for once-happy now-sad pooter:

• CPU Intel Core i7-4790 3.6Ghz 8Mb Cache S1150

Methinks i'll begin feeding the latter info into my search engine, & use the basically unintelligible-to-me [except its first & fifth lines] former info to hopefully corroborate any hits, if necessary.

Initial results rather dispiriting. I need only the new fan & motor, not the heatsink too, but so far all results i've found for apparently right model are for the complete combo. Any bare fans/motors so far are all the wrong models. Additional irritant; heaps of results are for Amazon listings, & i will never under any circumstances support that terrible company.

Shall go & sulk over dinner & movie, then resume later. Sigh.

Well, have sat on this for several days, hoping for a better idea to hit me, in order to avoid having to buy the single local option available whose price is clearly a monumental rip-off. Assuming still no better by post-dinner tonight, i shall just have to swallow my annoyance, hold my nose, & allow myself to be ripped-off, otherwise, still no working pooter. Sigh.

@MsDropbear42 Not sure whether it helps:

DuckDuckGo for Intel E97378-001 fan:

https://www.newegg.com/global/au-en/intel-k69237-001-lga115x-bracket/p/13C-004C-00099

"Will work for any socket 1200, 115x etc."

Okay:

https://computers.scorptec.com.au/computer/Lga-1200-Cooler

There are more options.. May they fit?

Scorptec (around the corner here in South Melbourne) has people who know stuff.. Maybe just call them.

@petros Ta. The problem is that vendors are being extremely loose with the truth. The same silhouette comprises multiple discrete part numbers, of varying amperage. Mine is 12V 0.28A, which sadly has proven to be difficult to replace. Other silhouette stable-mates of very similar but different part nos are 0.18, 0.20, & 0.60 amps; these ones are all over the internet. Many vendors have advertised my exact p/n, & it's not til i zoom in on the pictures to read the ID spec info that i see they're one of the other amp ratings.

scorptec.com.au is one of the many vendor sites i'd already searched, & drawn a blank. Ta anyway.

@MsDropbear42 I discussed it with my colleagues.

0.28 A is the current your particular fan will draw and how much power it will use (12Vx0.28A is a bit more than 4 Watt).

But it is not a defining feature in a way that you need exactly 0.28A. Others will do.

Similar as at home - you can put a 40 W lamp into a socket but 75 is fine as well - as long as the fuse isn't coming off. 4 or 5 W shouldn't be critical given that a computer has a few hundred W power supplies.

That's what we think here..

@petros Well now, that is most interesting, thank you! My pooter's PS is 700W, so i knew that was not a relevant limiting factor here, but the single reason for my conservative decision to replace with an exact match is that i know nothing about the current rating of the rest of that part of the circuit. In other words, whilst i knew i did not want to buy either the 0.18 or 0.20 A options for fear of inadequate cooling from their lower power than mine, my temptation for the 0.60 A option [with implied possibility of better cooling due to its higher power] was countermanded by my anxiety / uncertainty over whether the rest of my existing cpu cooling fan circuit was safe with the extra amperage.

Maybe i'm being ridiculous, & 0.60 A would be perfectly safe?

@MsDropbear42

https://gamingonpoint.com/learning-guides/how-many-watts-does-a-cpu-cooler-use/

I think you are fine with 0.6A as well. It's 7.2 VA - not much compared to "the rest" of the system and it does not look as a concern for a motherboard.

@petros Consider yourself virtually hugged, with gratitude. You've now tremendously opened up my range of vendor options. Tonight i shall repeat my earlier searches, but this time not excluding all the many [iirc] 0.60 A ones.