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SSDT-Related?: CPU Massively Speed-Throttled, except when Woken from Sleep

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Jun 12, 2011
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Motherboard
GA-EX58-UD5 rev 1.0 F13 BIOS, 24GB RAM
CPU
Xeon X5675 OC 4.37GHz
Graphics
9800 GTX+ 512MB
Mac
  1. MacBook Air
Mobile Phone
  1. iOS
Ever since installing Clover + El Capitan (from Chimera / Yosemite)...
My 10.11.x EX58 system now exhibits:

1. Low Geekbench 4 scores vs. 70% higher GB4 scores when dual-booting Windows 10
2. HWMonitor shows 12X CPU multipliers vs. 23X BIOS settings when dual-booting Windows 10
3. CPU Core temperatures are 7 degrees (C) hotter vs. Windows 10.

Strangely, though, when waking from sleep, El Capitan shows full 23X CPU multipliers, improved GB4 Scores (still 10% less than Win10), but even HIGHER CPU temperatures-- 20 degrees (C) higher than Win10!!!!

On this motherboard (GA-EX58-UD5), these symptoms happen in both BIOS + DSDT + RAM + CPU cases:
1. F12 BIOS + F12 DSDT from DSDT Database + 18GB RAM + Core i7 920 20X 177Bclk+Turbo=3.7GHz OC
2. F13 BIOS + F13 DSDT from DSDT Database + 24GB RAM + Xeon X5675 23X 190BClk=4.37GHz OC

BIOS is currently set as follows:
1. Intel Turbo Boost Tech. DISABLED
2. CPU C1E DISABLED
3. CPU C3/C6/C7 State Support DISABLED
4. CPU EIST DISABLED

Attached are screenshots of GeekBench4 Results + Temps + CPU Multipliers for:

1: Win10
2: ElCap from Boot
3. ElCap after Waking from Sleep

I'Also I've attached my config.plist in case that helps. Only kexts in 10.11 folder are latest 4 HWSensors + FakeSMC.kexts, realtekALC.kext. I've tried Product Names (Model Identifier): MacPro3,1; MacPro4,1; MacPro5,1 with the same results.

Any suggestions anyone? I know little about power management, have never used an SSDT, and just want the full speed 24/7 with low temps like Windows 10.

Thanks in advance for any help you can offer,
-Phil

1.Win10.jpg 2.ElCapBoot(MacPro4,1).jpg 3.ElCapWakeFromSleep(MacPro4,1).jpg
 

Attachments

  • config.plist
    5.2 KB · Views: 172
Same symptoms with 10.12 Sierra:

CPU stuck at 12X (vs. 23X in BIOS).

Anyone have any ideas? Would losing the UD5 F13 DSDT help?
 
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