The 280 results per installed device might actually be lower than what they are actually contributing! Since the device installation number is all devices ever registered with WCG under that account, it doesn't necessarily mean that they are currently crunching with that many devices. A reinstalled OS might count as a new device, or devices may have been retired.

But yes, they are definitely many-core machines. Depending on the number of cores and the work units selected for the machine to crunch, one machine can return thousands of units per day.

I have seen some potential evidence of stat manipulation (huge daily results returned, but without the kinds of badges I would expect to see to back those numbers up), but I believe that any "hacked" results are cleaned up by the backend of WCG's system.

I have 41 active computers running now and WCG reports 89 installations. It says yesterday (whenever that was) I returned 6,665 results or 162 results per active computer or 75 per fictitious computer. These 41 computers have 1,054 threads running CPU WUs for an average of 27 threads per computer. That's 6.3 results per CPU thread per day or about 3.8 hours per WU.
WCW.NifHACK returned 52,527 results or 307 per installation with 171 installations. Since WCW.NifHACK has been a member for years their active computers are many fewer than 307. I see nothing out of whack with WCW.NifHACK's numbers.
This is The Spare Change Fallacy at work. Impossible to get 5 minutes per result.
Not sure what Nvidia's upcoming Ampere has to do with the price of tea in China.
I have 153,478 FP MIPS Whetstone and 3,504,469 Integer MIPS Drystone. BTW, this is a CPU project and not a GPU project.
I love the smell of math in the morning.

I don't think they meant completing a result in 5 minutes, but more returning a result on average every 5 mins - e.g Having 200 cores all doing 7 tasks per day would be 1400 tasks a day, or just shy of 1 per minute on average.

That's how I read it to be anyway :)

Chris

This contributor is legit. They are running many Epyc 7702P's in preparing those machines for special ICT purposes.
And while doing so, they use distributed processing projects as some sort of burnin, so to speak.

They helped the Dutch Power Cows team (DPC) to reach no 1 on the daylies of Rosetta@Home in the stampede in last April. After that they transferred all machines to WCG.
In doing so they contribute their power for medical goals and research.
(No, I don't work at Nifhack, but I'm part of DPC.)

Just to inform you guys/gals that this is no scam / cheat / something of the sort.
Just plain Epyc 7702P blades running 24/7 WCG projects. And yes: many!

My recently bought AMD 3950X (32 logical threads) processes around 490 WU's a day (MCM, MIP, SCC, FightAids@H). Thats about 1 WU every 3 minute.