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News ARM Server CPUs

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Doug S

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Feb 8, 2020
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Seems like they're trying to market on having a large number of cores rather than actual performance. Halving the SLC when you add 60% more cores is not a good strategy for gaining performance, that's why it is only a 19% bump.

I have to wonder if going from 80 to 96 cores and taking SLC to 24 or 32 MB would have resulted in the same or better performance for less power?
 
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Hitman928

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Apr 15, 2012
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Does ARM have any provision or designs for chiplet-based processors? maybe that is the core thing. Pure core-performance and efficiency is one thing, being able to produce more and sell them cheaper is another one. I say it's actually these "secondary" aspects that will become more and more important including packaging.
They are working with TSMC to work in this direction but I don't know where/when they plan to introduce it into their roadmap.

 

Thala

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Nov 12, 2014
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Seems like they're trying to market on having a large number of cores rather than actual performance. Halving the SLC when you add 60% more cores is not a good strategy for gaining performance, that's why it is only a 19% bump.

I have to wonder if going from 80 to 96 cores and taking SLC to 24 or 32 MB would have resulted in the same or better performance for less power?
I am sure they should have consulted you instead of running their in-house simulations when optimizing perf/area - or perhaps they just rolled a dice?
 

Doug S

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I am sure they should have consulted you instead of running their in-house simulations when optimizing perf/area - or perhaps they just rolled a dice?
If you think engineers always win out over marketing in product decisions then you must have been working in one of the rare companies where that's true.
 

Thala

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Nov 12, 2014
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If you think engineers always win out over marketing in product decisions then you must have been working in one of the rare companies where that's true.
If you really believe such drastic measures like reducing SLC in favor of cores are marketing driven - you must have been working for companies, which don't survive for long. This is not even a consumer facing product, where marketing has a bigger impact - and this holds even more for a start-up.
In any case, looks like they are successful in squeezing 19% more performance out of similar power and area budgets even if average performance per core goes down. And now comes you, not having touched any performance/area system simulation with a ten-foot pole and claim the opposite?
 
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DrMrLordX

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Apr 27, 2000
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I'm still at least moderately interested in acquiring one of the low-end $800 Altra CPU/board combos. Has anyone seen a vendor selling those parts yet?

edit: the Q32-17 I think. Unless they've already updated the product stack?
 

Hitman928

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I'm still at least moderately interested in acquiring one of the low-end $800 Altra CPU/board combos. Has anyone seen a vendor selling those parts yet?

edit: the Q32-17 I think. Unless they've already updated the product stack?
I'm guessing the $800 is what the server vendor pays and unless you find one that somehow leaked out of the normal distribution channel or from a decommissioned server, you would have to buy a full blade solution to get access to an Altra CPU / board.
 

DrMrLordX

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I'm guessing the $800 is what the server vendor pays and unless you find one that somehow leaked out of the normal distribution channel or from a decommissioned server, you would have to buy a full blade solution to get access to an Altra CPU / board.
You may be right. But I haven't even seen anyone selling blades.
 

Hitman928

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You may be right. But I haven't even seen anyone selling blades.
I don't think they have the commercial volume for 'retail' sales. If you're really interested you'd have to contact one of their sales partners. I'd expect to pay quite a bit more than $800 though to get your hands on one.
 

DrMrLordX

Lifer
Apr 27, 2000
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I don't think they have the commercial volume for 'retail' sales. If you're really interested you'd have to contact one of their sales partners. I'd expect to pay quite a bit more than $800 though to get your hands on one.
Yeah that's what I thought. They probably wouldn't be interested in small volume sales either.
 

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