mersenneforum.org  

Go Back   mersenneforum.org > Great Internet Mersenne Prime Search > Hardware

Reply
 
Thread Tools
Old 2020-12-22, 16:58   #1
henryzz
Just call me Henry
 
henryzz's Avatar
 
"David"
Sep 2007
Cambridge (GMT/BST)

33·7·31 Posts
Default Ampere Altra

This looks like a very impressive Arm CPU. 80 N1 cores at 3.3 GHz. Shame about the $4050 price tag. Maybe 32 cores at 1.7 GHz for $800 is better value.

https://www.anandtech.com/show/16315...e-altra-review
henryzz is online now   Reply With Quote
Old 2020-12-22, 21:35   #2
nordi
 
Dec 2016

59 Posts
Default

Quote:
Originally Posted by henryzz View Post
Maybe 32 cores at 1.7 GHz for $800 is better value.
That was also my thought, especially considering the 45W TDP and 8 memory channels! The same money for an AMD Epyc will get you half the cores at around twice the clockspeed (=same performance?), but the power usage is ~100W higher.
nordi is offline   Reply With Quote
Old 2020-12-23, 00:48   #3
M344587487
 
M344587487's Avatar
 
"Composite as Heck"
Oct 2017

11000101112 Posts
Default

I'm incredibly skeptical that a 32 core 1.7GHz 45W TDP Arm part can compete in performance with a 16 core Zen 2 part with a much higher TDP, at least in heavy workloads like Prime95 I can't see how it's possible (on an efficiency basis sure, but not throughput). Even if the Altra is on 5nm TSMC and granted a 16 core Zen 2 Epyc part is on the inefficient end of the spectrum relative to other Epyc 2 parts, you'll still need to show me hard stats before I'd believe it. Other workloads may fare better so it's worth watching.



$800 is good value but it's just for the chip, I wonder what a complete setup costs and if there'll be a cloud option.
M344587487 is offline   Reply With Quote
Reply

Thread Tools


All times are UTC. The time now is 13:31.

Wed Apr 21 13:31:15 UTC 2021 up 13 days, 8:12, 0 users, load averages: 1.96, 2.03, 1.86

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.