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they appear to be bragging about 12GiB/s of aes-256-gcm per crypto accelerator. This is equivalent performance to about 2.6 cores of epyc milan, but let's be generous and say 3 cores. At retail, 3 cores of epyc milan costs $240-$360. How much does one of those crypto accelerators cost?

Can your epyc sustain this througput 24h a day ?

yeah, pretty easily, why wouldn't it? those are the post-heatsoak numbers on my desktop (running an epyc 7443p), sustainable indefinitely.

Also a comparison of Z15 Java performance vs x86. The advantage for the mainframe comes from the additional computing capabilities like compression dedicated hardware and other components the x86 platform misses.

https://github.com/IBM/IBM-Z-zOS/blob/main/zOS-Education/Hin...

You still hadn't mentioned any relevant number.

"Linux Workload Performance on LinuxONE III / z15"

https://community.ibm.com/HigherLogic/System/DownloadDocumen...

Ok the benchmark is from June 17th, 2020 but it’s using a Xeon 6140 a Skylake chip from Q3'17. That gets crushed even by even a $125.00 E5-2670 let alone whatever your similar budget buys you.

So, I am guessing actual head to head benchmarks must be quite bad.

Yes. It has a Processor Base Frequency 2.30 GHz · Max Turbo Frequency 3.70 GHz

Your latest Intel® Xeon® E-2386G Processor, not available yet...has a base frequency of 3.50 GHz and a Max Turbo Frequency 5.10 GHz

So even with the latest...your Turbo frequency... is the base from the mainframe core...

And if you happen to be running a memory bound benchmark, with the massive caches in the mainframe, you will be crushed.

> Running a memory bound benchmark

I can easily write a memory bound benchmark that makes all CPU cache irrelevant. The only thing that actually matters is real world performance which is why actual benchmarks are so critical.

> Xeon® E-2386G Processor

That’s a chip from 2018. Anyway, you can talk about CPU clock speeds all day, but it doesn’t mean much between different CPU families.

Can't reply to response from Retric below so will do it here.

Wrong choice indeed the Xeon® E-2386G Processor its not what I was looking for. Instead of going for the latest lets review the latest offers from Intel:

https://en.wikipedia.org/wiki/List_of_Intel_processors

A few models that have a peak turbo frequency approaching the sustained frequency of Z core. Also, of course due to different architectures, internal caches, we should not be comparing purely on frequency. Although the mainframe is again wining here in frequency and cache sizes...

Also agree that what counts are real workloads with real commercial applications. I have so far posted at least three but here is another one:

"IBM MQ for z/OS on z15 Performance"

http://ibm-messaging.github.io/mqperf/MQ_for_zOS_on_z15.pdf

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