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Old 11-29-2012, 12:41 PM   #1
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Linux on overclocked computer.

Hello everybody.
Had questions about Linux on overclocked machine so I came here and ... don't know how to ask: this forum looks like after Apocalypse: there are the locks like tombstones on almost every thread... did somebody executed here at admin's prompt # killall Linux?
Or it's new MS game?

Anyway the idea I came with is about to share our knowledge about overclocking in Linux/BSD environment.
I just tried and got not so good results with Fedora and Ubuntu while Win7 runs quite pertly on the same machine.
It is Phenom II x4 945 on Asus M3N78-vm with 2x2Gb Kingston Hyper X pc2-8500 ram in dual channel unganged.
Since my cpu is not BE and it's locked... I played with FSB and got pretty good results in Win7x32bit at 260MHz, I got 3.64GHz cpu and 1040MHz ram with overvoltages 150mv and 300mv respectively.
However my both Linuxes Fedora 17x64 and Ubuntu 12.04x64 started showing weird things with getting worse from session to session. All the troubles point to usb problem in both distros so it's a hardware issue (ram?).
Currently I returned my machine to stock settings to see if I fried something on the mobo.
What's your experience, guys?
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Old 12-06-2012, 07:05 PM   #2
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I kept mine Overclocked for a while, but brought it back to stock for the summer. I haven't bothered to OC it back up (haven't had the time). I might take the time to OC it after the holidays, but I think not.

The fastest stable overclock I had is in my sig. 4.01 GHz (Phenom II 965 BE)
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Old 12-06-2012, 08:21 PM   #3
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If the overclock is stable then you shouldn't have any issues on either windows or linux.

As a rule of thumb thought, if I'm compiling something I always run stock settings.
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Old 12-16-2012, 11:18 PM   #4
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Yeah, I used a 55% overclock on a water cooled Brisbane for years. It was much faster in Arch Linux than other distros. However, I prefer Fedora and have been in the game since Redhat 7 and Suse 7.3.

I've seen Linux do a lot of things that Windows cannot. I am surprised to hear of your bad luck.
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Old 01-09-2013, 11:01 PM   #5
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I OCed both funtoo and FreeBSD. funtoo/gentoo seemed a bit more tolerant to it. As with anything make sure your compile settings for make are taking advantage of all your cores. Use memory file systems for caches where you can simply because they are fast; and don't need to thrash a ssd if you run one. Video and audio conversions are a fun bechmark to attempt. Tripping up flash cookies with softlinks are a good hack =)
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