Go Back > Great Internet Mersenne Prime Search > Hardware

Thread Tools
Old 2021-09-05, 15:50   #12
diep's Avatar
Sep 2006
The Netherlands

11·71 Posts

6700k is a chip with just 4 cores and tdp of 91 watt. non-server processors tdp's i'm not so sure how 'strict' those are if you measure them. Even then that's a whopping 23 watt for 1 core.

Compare with quad core ARM 1.4 - 2.0 ghz that's 2.2 watt under full load and older process technology than the 6700k.

Electronics and physics aren't my strongest point.

It's the lack of good software, read good OSes that do not multithread/multiproces in a very good manner, which causes us to be using very high clocked cpu's with few cores, instead of much lower clocked cpu's with a bunch of cores at a much lower TDP.

I would argue ARMs has completely replaced x86's for the masses. Many nowadays only own a mobile phone and no longer a personal computer and usually an ARM in that phone!

I explicitly mentionned quadcore ARMs as they use not that many transistors like x64 with AVX is doing :)
If you have software that runs very well SMP then a lot simpler cores will always beat todays overcomplex cores.

A chip without fp64 at all would be really interesting to produce with 1024 cores on a single chip.

Except i do not see it happen any soon because the OSes simply favour high clocked CPU's as well as most applications do.

To pay for those expensive factories that produce cpu's, a price of 10-20 billion dollar isn't abnormal for a factory, which is the 2nd law of Moore as intel calls it - price of each generation of process technology in a new factory leading to a doubling in price to build that factory. So i would argue that making cpu's ever more complex by keeping adding all sorts of instructions is a waste of silicon anyway.

The fundamental problem seems to be: no one pays for better software!
So the software improvements there really go duck slow...

Eventually we'll get there!

Last fiddled with by diep on 2021-09-05 at 15:52
diep is offline   Reply With Quote
Old 2021-09-05, 21:00   #13
Just call me Henry
henryzz's Avatar
Sep 2007
Cambridge (GMT/BST)

22×33×5×11 Posts

I was under the impression that power usage was O(f * V^2) of cause higher frequency requires higher voltage(perhaps giving O(f^3) in some ranges of f).
henryzz is offline   Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Does there exist another power of 2, except 65536, that doesn't contain a power of two digit? Viliam Furik Puzzles 20 2020-09-01 14:28
Mixing Xeon E5-26xx processors on Dual CPU motherboard VictordeHolland Hardware 13 2019-03-05 06:09
Which versions for multiple processors, Xeon? kdq Information & Answers 5 2008-09-28 06:18
HT processors paulunderwood 3*2^n-1 Search 7 2007-02-15 15:47
Advice wanted - HP workstation with XEON processors AntonVrba Hardware 4 2006-06-04 11:01

All times are UTC. The time now is 00:43.

Wed Dec 8 00:43:22 UTC 2021 up 137 days, 19:12, 0 users, load averages: 1.18, 1.64, 1.92

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.