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Category: Community
Forum: Hardware Chat Room
Thread: How much ram is enough? |
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Thread Status: Active Total posts in this thread: 7
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Navy1965
Cruncher USA Joined: Jun 1, 2007 Post Count: 8 Status: Offline Project Badges: 
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Hi all,
I have several computers that have 4 memory slots for a total of 16gbs. At present I have 8gbs installed. Will increasing the ram to the full 16gbs increase speed or am I just wasting my money on the extra ram. tks |
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SekeRob
Master Cruncher Joined: Jan 7, 2013 Post Count: 2741 Status: Offline |
Wasting money, mostly, all depending on how many cores/hyperthreads are in the CPU. One exception is the Clean Energy science. Count on 1GB per concurrent tasks, or the comp drowns in diskswapping, otherwise your 8GB is more than enough.
Now, that said, if you want to run BOINC in a RAMdrive, then you can't get enough memory. Search forums for past discussions on this topic. |
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Navy1965
Cruncher USA Joined: Jun 1, 2007 Post Count: 8 Status: Offline Project Badges:
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Thank you. My cpu's are all duel core. I was thinking of getting some 4 core or 8 core cpus but didn't know if that would speed up anything.
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Byteball_730a2960
Senior Cruncher Joined: Oct 29, 2010 Post Count: 318 Status: Offline Project Badges: 
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You have more than enough.... this 24 core hyperthreaded machine is using 43% of the 16Gb is has.....
If I closed firefox, probably closer to 35%. |
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fuzzydice555
Advanced Cruncher Joined: Mar 25, 2015 Post Count: 89 Status: Offline Project Badges: 
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Getting more cores would definitely get you more points and runtime!
----------------------------------------With ubuntu you need very little ram. I'm running 24 thread machines with 8GB, 4 cores with 4GB. The only project which uses lots of ram is CEP, but normally each of your PCs get only one CEP unit at a time. So the memory consumption is like this: 1x CEP 1GB 3x other projects, 50-100MB per project -- 1.3 GB for 4 cores/threads 1x CEP 1GB 23x other projects -- 3.3 GB for 24 cores/threads If you use windows, you will need a bit more RAM, but 8GB is more than enough.  [Edit 1 times, last edit by fuzzydice555 at Oct 29, 2016 3:10:02 PM] |
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KLiK
Master Cruncher Croatia Joined: Nov 13, 2006 Post Count: 3108 Status: Offline Project Badges:
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Thank you. My cpu's are all duel core. I was thinking of getting some 4 core or 8 core cpus but didn't know if that would speed up anything. for dual-core - forget it...8GB is enough! or you'll not only be wasting money for RAM, but also on electricity! 'cause every RAM costs some wattage! ;) |
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dondee
Advanced Cruncher Joined: Jan 16, 2006 Post Count: 100 Status: Offline Project Badges: 
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This may help you to determine how much ram is being used:
http://superuser.com/questions/482178/how-can...or-my-computers-ram-usage I am running mapping on an eight thread machine with Linux (windows uses more ram) and the ram used for the os and programs is at 3.2gb. 8 gb should be more than enough for a dual core. |
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