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   𝅙𝅙𝅙𝅙𝅙𝅙𝅙𝅙 (jihadjimmy@the.asbestos.cafe)'s status on Tuesday, 12-Dec-2023 19:48:05 JST 𝅙𝅙𝅙𝅙𝅙𝅙𝅙𝅙

   • 翠星石
   @Suiseiseki
   
   > I have 32 cores clocked at 3 GHz
   
   Have you ever checked idle TDP? Tempted to fetch me the same board if I can find a good price on eBay but if it eats far more power than my current system I doubt I'll use it that much.
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     翠星石 (suiseiseki@freesoftwareextremist.com)'s status on Tuesday, 12-Dec-2023 19:48:04 JST 翠星石

     in reply to
     @jihadjimmy Idle power for dual 6282 SE's and the mobo is ~60W according to lm-sensors.
     
     Full load power is 280W+~20W for the mobo ;3, but that's somehow better than intel's recent housefires and consider that's 4 CPUs (2x dual 8 core die CPUs).
     
     
     Idle power would probably be lower if Turbo 2 and power saving were actually properly configured, but it's noted that on tickless systems (nohz=on), the extra cores can enter CC6; https://www.coreboot.org/Board:asus/kgpe-d16
     
     If power consumption is a big issue, I would recommend dual or a single 6278 or a 6262 HE if you can find one; https://en.wikipedia.org/wiki/List_of_AMD_Opteron_processors?useskin=monobook#Opteron_6200-series_%22Interlagos%22_(32_nm)
     
     In my testing with a 6278 and 6282 SE running in the same motherboard (mixing and matching CPUs like that isn't meant to work, but it did) it seems the 6278 is the 6282 SE on a slightly newer node, but slightly less aggressively clocked, meaning it's a bit slower.
     
     S3 ACPI is currently broken, but based GNUboot developers are working on fixing RAMinit, which will allow for resuming from suspend to work.
     
     
     There's also the workstation equivalent KCMA-D8 with lower powered CPUs: https://www.gnu.org/software/gnuboot/web/docs/hardware/kcma-d8.html
     
     Getting CPU coolers to fit on the KCMA-D8 is reportably easier and finding a case is easier too, but it just isn't as good.
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     翠星石 (suiseiseki@freesoftwareextremist.com)'s status on Tuesday, 12-Dec-2023 20:25:48 JST 翠星石

     in reply to
     @jihadjimmy I didn't just try, I did it with the previously free version of libreboot and it ran just fine.
     
     The 6278 matched the clock rate of the 6282 SE as well.
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     𝅙𝅙𝅙𝅙𝅙𝅙𝅙𝅙 (jihadjimmy@the.asbestos.cafe)'s status on Tuesday, 12-Dec-2023 20:25:49 JST 𝅙𝅙𝅙𝅙𝅙𝅙𝅙𝅙

     in reply to

     • 翠星石
     @Suiseiseki
     
     > (mixing and matching CPUs like that isn't meant to work, but it did)
     
     Wait did you really try to mix two different CPUs and it POSTed and booted just fine? With Libreboot?