Ryzen overclocking adventure

MacOS + Windows + Linux at 8 x 4.2Ghz

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Soon to be obsolete for the rest of the world, but essential notes for lions because it will have to be repeated every time Redmond or Cupertino push an update.

That was the most expensive CPU, motherboard, memory setup the lion kingdom ever got.  Getting a speed boost over what was $400 in 2010 took a lot more money than it did, but hopefully will last another 8 years.

The #1 trap for young players:  The BIOS uses the mouse to navigate, except when adjusting the CPU core ratio.  That greyed out box needs to be adjusted with the +/- keys.

Accessing higher memory frequencies requires stepping up the CPU clockspeed.  For a Ryzen 2700x, got 2 x G.SKIL 3600Mhz  16GB to really hit 3600Mhz only after increasing the CPU clockspeed to 4.2Ghz.  At 3.7Ghz, the RAM would die beyond 3333Mhz.

The side firing SATA header is a pain.

The ugly plastic thing covering the ports doesn't come off without 1st removing the heatsink over the MOSFETS.  Maybe you can spray paint it.

At 4.2Ghz, it plays an H.265 8192x4096 138megabit video in a 2048x1024 window at a studdering 24fps.  It definitely can't play 8k video on an 8k monitor but might do 4k on a 4k monitor.

Transcoding 8k video to a faster codec, it maxes out all 16 hyperthreads at 4.2Ghz & uses 8 of 32gig of RAM. Not out of memory or taking all day, as it would have been a week ago. Rendering speed of the NASA video was 1/3 realtime.

The faster codec reduced NASA's 139megabits to gootube quality & played back at roughly 70fps. Still constrained to a 2k window.

WINDOWS in Virtualbox

Windows is fairly straightforward to install in Virtualbox.  The mane struggle is getting Windows to mount a samba filesystem.  The key trap for young players is samba uses a different password file than the operating system.

Macos in Virtualbox

Simply booting a macos .iso or .vmdk file from the internet results in the famous "critical error" crash.  You need a version of macos hacked to run on Ryzen.  Most of your problems will arise because Macos doesn't run on Ryzen.  Another few thou would have bought an Intel CPU which would run MacOS flawlessly. We didn't have CPU incompatibilities like this, 20 years ago.

Current guide for hacking Macos to run on Ryzen:

It requires a real mac to create the installation media.

For the virtual machine, you need to mount the installation media as the 1st physical disk & boot it.  This requires jockeying the port numbers, not dragging the disk icons.

Once installation finishes, Virtualbox doesn't enter the clover boot manager as described but restarts the installer from the USB drive.  It's now very important to do

Step 6. AMD PreInstall Kernel Execution

Then unmount the target, reboot into the target virtual disk by removing the installation media in Virtualbox.

It should boot the target successfully without Clover, finish installation, & reboot again to a blank screen.  You have to attach the installation media in Virtualbox again & reboot into it.

Then, do

Step 8. AMD Post...

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  • Overclocking failure

    lion mclionhead12/17/2018 at 19:07 0 comments

    After 1 month at 4.2Ghz, it attempted the 1st stabilization of a 4k video & prompty crashed.  It wouldn't post anymore until the clockspeed was lowered to 4.1Ghz & memory was lowered to 3400Mhz.  The voltages remaned on auto.  No manual voltage tweeking improved it.  

    It was the end of an era.  There probably is a short term fuse which lasts just long enough for product reviewers to hit a higher threshold & throw it away.  Like an old fashioned lightbulb, it eventually burns out.  

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