mersenneforum.org  

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

Reply
 
Thread Tools
Old 2016-09-13, 22:40   #1
primecrusader
 
Sep 2016

3 Posts
Default Should I upgrade to a quad core

I have two computers which I am going to use to run prime 95. One has a Pentium dual core e5300@2.6ghz and the other has a 2.5ghz Pentium dual core ?????? (can't check right now as I am at school). I will be overclocking and water cooling each CPU as much as I can and each computer has one 1gb of DDR2 RAM I am thinking of upgrading each CPU to a quad core - maybe a Q6600 if it will make prime 95 significantly faster. Q6600s are only about $20 if they are bought used online.
primecrusader is offline   Reply With Quote
Old 2016-09-13, 23:20   #2
paulunderwood
 
paulunderwood's Avatar
 
Sep 2002
Database er0rr

32×11×37 Posts
Default

I would recommend an Intel chip with AVX.
paulunderwood is offline   Reply With Quote
Old 2016-09-13, 23:31   #3
henryzz
Just call me Henry
 
henryzz's Avatar
 
"David"
Sep 2007
Cambridge (GMT/BST)

133558 Posts
Default

Quote:
Originally Posted by primecrusader View Post
I have two computers which I am going to use to run prime 95. One has a Pentium dual core e5300@2.6ghz and the other has a 2.5ghz Pentium dual core ?????? (can't check right now as I am at school). I will be overclocking and water cooling each CPU as much as I can and each computer has one 1gb of DDR2 RAM I am thinking of upgrading each CPU to a quad core - maybe a Q6600 if it will make prime 95 significantly faster. Q6600s are only about $20 if they are bought used online.
If you include power Q6600s are very inefficient. A modern cpu can LL test 4x the speed at 1/3-4 the power.
Pretty much anything from the last 3-4 years would be better even with the increased price.
henryzz is online now   Reply With Quote
Old 2016-09-14, 02:24   #4
LaurV
Romulan Interpreter
 
LaurV's Avatar
 
Jun 2011
Thailand

223408 Posts
Default

All those CPUs have LGA775 socket, so if you want to upgrade to a higher CPU, you will also need a mobo upgrade. As they may come with different power connectors, you need a new power supply too..

So, if the man wants only to upgrade the CPU for $20, let him do. The p95 speed will double, but that is still insignificant comparing with what a newer CPU can do.

However, if you want to run the computers mainly for P95 (i.e. you let it occasionally open overnight, etc), then you may spend in one year the money difference, for electricity. Those old CPUs are power-hungry beasts, compared with the new, more efficient i3s.

After one year, you spent the same amount of money on "old computer running p95, plus electricity" as you would have spent on "upgrading to a new computer and electricity to run p95 for one year", and you still have the old computer, plus 4 times less P95 credit.

So, if the money are an issue, think twice. (It can not be, because you talk about liquid cooling, and that, if properly done, is not cheap either!)

For us, "100.1 miles per hour is better than 100 miles per hour", so you will help the project anyhow, no matter what way you chose.

Last fiddled with by LaurV on 2016-09-14 at 02:25
LaurV is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dual Core to Quad Core Upgrade Rodrigo Hardware 6 2010-11-29 18:48
exclude single core from quad core cpu for gimps jippie Information & Answers 7 2009-12-14 22:04
Quad Core and P95 sgrupp Hardware 54 2008-01-25 22:01
Quad Core R.D. Silverman Hardware 76 2007-11-19 21:57
Optimising work for Intel Core 2 Duo or Quad Core S485122 Software 0 2007-05-13 09:15

All times are UTC. The time now is 01:24.

Sun May 9 01:24:39 UTC 2021 up 30 days, 20:05, 0 users, load averages: 2.34, 1.87, 1.76

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.