On Wed, Feb 12, 2014 at 05:31:56PM -0500, Stephen P. Molnar wrote:
> I am planning on upgrading my Debian Linux tower and am soliciting comments
> on the following CPU/Motherboard:
> 
>  
> 
>       AMD FX 8320, 8-core 3.5 GHz, 16.0MB Cache CPU
> 
>       ASUS M5 A97 R2.0 Motherboard

Last year I upgraded to an AMD FX-8350 with an ASUS SABERTOOTH R2.0
motherboard.  Other than an initial annoyance disabling insecure
boot, and getting Debian to install on EFI/GPT, it's all worked
perfectly well.  To be fair, the EFI/GPT stuff works fine, but booting
in EFI mode was initially a challenge because the EFI BIOS kept
silently re-enabling the "secure" boot behind my back which broke the
installer.  Once it was disabled properly, it worked without trouble.

I don't think you'll have any trouble at all with either the processor
or the mainboard.

Once of the nice things with the AMD systems is that you can load
them up with ECC RAM unlike their Intel counterparts (that is, unless
you spend lots of money on expensive Xeons).  Definitely recommended
if you don't mind paying for an extra bit.

These 8-core processors are great for parallel building of stuff; I
got one so I could build C++ code faster.  Co-incidentally, I'm just
doing a whole-archive rebuild of Debian with 8 concurrent job slots;
taking about 24h to rebuild every arch-any package with sbuild.  That's
7527 builds, working out at just 90 seconds (mean) per package!  Not too
shabby!  The machine is still perfectly usable and responsive--you
wouldn't realise it was heavily loaded at all unless you saw the disc
light on solidly. (Maybe I'll bump the parallel count up to 12 for the
next run.)  In synthetic benchmarks, they often don't fare well in
comparison with e.g. i7 processors on various counts, but for this type
of workload they are great.

One thing I did get caught out by is that I thought it would be fun to
try out one of the closed-loop coolers (Corsair H60) where there's a
heatsink with impeller on the CPU and a radiator you put on the air
intake.  It kept the CPU really cool (30-40°C).  However, the mosfets
around the CPU had no airflow around them and were getting to over
80°C!  I ended up replacing it with a big Noctua NH-C14 fan which
blows air down over a heatsink but also removed that dead airspace
which was causing the mainboard to try cooking itself, by blowing air
directly down onto the area surrounding the CPU.  None of the hardware
was faulty here--just the combination of case, mainboard and cooler
not working out due to the poor airflow; just thought it worth
mentioning if it helped anyone else avoid the same mistake.


Regards,
Roger

-- 
  .''`.  Roger Leigh
 : :' :  Debian GNU/Linux    http://people.debian.org/~rleigh/
 `. `'   schroot and sbuild  http://alioth.debian.org/projects/buildd-tools
   `-    GPG Public Key      F33D 281D 470A B443 6756 147C 07B3 C8BC 4083 E800


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