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Blind_Sniper
Guru
Joined: 20 Apr 2018
Posts: 340
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 Posted: Sat Dec 08, 2018 5:37 pm Post subject: Changing Sandy Bridge to Ivy Bridge |
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Hi!
Today I've got a box with gentoo installed.
It has a Sandy Bridge Pentium G850 on board. I have a more powerful cpu: Ivy Bridge i3-3225, and I want to replace pentium with it.
The question is: have I to rebuild entire the system from scratch or is it enough to rebuild packages as they will be updated in portage tree? |
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bunder
Bodhisattva
Joined: 10 Apr 2004
Posts: 5934
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| Posted: Sat Dec 08, 2018 8:28 pm Post subject: |
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if the chip is compatible in your motherboard it should boot... as for making the change in gentoo, if you don't want to recompile everything now, i would at least do gcc, then @system.
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| Neddyseagoon wrote: | | The problem with leaving is that you can only do it once and it reduces your influence. |
banned from #gentoo since sept 2017 |
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saboya
Guru
Joined: 28 Nov 2006
Posts: 552
Location: Brazil
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| Posted: Sat Dec 08, 2018 11:03 pm Post subject: |
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| Everything will keep working just fine. Might want to compile AVX-compatible software since Ivy Bridge supports that and Sandy doesn't. |
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mike155
Advocate
Joined: 17 Sep 2010
Posts: 4438
Location: Frankfurt, Germany
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| Posted: Sat Dec 08, 2018 11:34 pm Post subject: |
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| Don't forget to adjust CFLAGS, CXXFLAGS and CPU_FLAGS_X86 in /etc/portage/make.conf. |
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toralf
Developer
Joined: 01 Feb 2004
Posts: 3922
Location: Hamburg
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| Posted: Sun Dec 09, 2018 9:53 am Post subject: |
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Do this: | Code: | | echo "*/* $(cpuid2cpuflags)" > /etc/portage/package.use/00cpuflags |
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Blind_Sniper
Guru
Joined: 20 Apr 2018
Posts: 340
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| Posted: Sun Dec 09, 2018 12:08 pm Post subject: |
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Thanks for replies, guys.
Seems mobo has an old BIOS which lacks of IvyBridge support, just refuses to start.
Will try to rewrite BIOS and try to boot again. |
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est921
n00b
Joined: 20 Dec 2015
Posts: 28
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| Posted: Sun Dec 09, 2018 1:00 pm Post subject: |
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| saboya wrote: | | Everything will keep working just fine. Might want to compile AVX-compatible software since Ivy Bridge supports that and Sandy doesn't. |
Sandybrigde does support avx. I think ivybridge is mostly a die shrink, not many new instructions or changes so rebuilding everything might not even make a noticable difference. Anyway, upgrading to a newer cpu from the same manufacturer should not result in any problems. I went from a 2600 to a 6800k without problems |
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