- Joined
- Nov 10, 2013
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PowerMac Mod:
2x XEON E5-2620 v1 - Intel S2600CP - 20GB RAM - Geforce GTX 750 passive
2x XEON E5-2620 v1 - Intel S2600CP - 20GB RAM - Geforce GTX 750 passive
Components
(all components were bought secondhand)
PowerMac G5 1,8Ghz case used
Intel S2600CP dual LGA 2011 Motherboard
2x Xeon E5-2620 v1 (6-core)
10x 2GB DDR3 1333Mhz (can be upgraded later on)
120GB Kingston SSDNOW V300
Geforce GTX 750 1024mb (Medion Edition, changed cooler for passive Arctic accelero s1)
Comments
For my study I have to do some 3D modelling and video rendering, I saw this PowerMac G5 case and decided to build a machine in this old nice enclosure. Modifying the case took a lot more time than I was expecting. Buying all the parts second hand, to keep the costs low, also took some time. However, it turned out nice! Of course this machine should at least have the option to run OS X
Installation Notes
GPU has to be in the PCI-e slot which is managed by CPU1. Later on in the process GPU can be moved to the PCI-e slot belonging to CPU2.
Bios settings
Disable the two serial ports of the mobo in the bios, and make sure that the PCI-E slot of CPU1 is used for your GPU. The rest of the settings can stay on the default settings.
Installation
Used UniBeast with legacy bios setting.
During installation process boot with the boot flags: -cpus=1 -nv_disable=1 -npci=0x3000 -v
The computer is terribly slow during install so don't get annoyed, this will be better later on.
Post installation
Using MultiBeast (10.2.0) install:
- Clover legacy Boot Mode
- FakeSMC plugins
- FakeSMC HWMonitor Application
- AppleIGB v5.3.5.3
- Nvideagraphixfixup
Using Kexthelper install:
- FakeSMC.kext
- AppleIntelCPUPowerManagement.kext
Install Nvidea web drivers
Use Clover Configurator (4.60.2.0) to put in the permanent bootflags:
- -npci=0x3000 -nvda_drv=1
- add the patch "change EHC1 to EH01" and the patch "change EHC2 to EH02" on the tab "Acpi" (to keep usb working with macpro6,1 smbios)
- Insert MacPro6,1 smbios on the tab "smbios"
- finally tick the box "NvideaWeb" on the tab "System Parameters"
You can put the GPU in the PCI-e slot of the second CPU if you like to (don't forget to also change this in your BIOS)
The screen will become inactive after the clover boot menu and gets active again on loading the Nvidea webdrivers.
What works?
-All 4 Ethernet ports
-pci-e GPU
-USB 2.0
-Sata controller
What does not work?
-Processor C states
-Integrated video adapter (which is a 6mb Matrox G200 2D adapter, so these days useless for desktop environments anyway)
-Turbo boost only up to 2.3Ghz, not to 2,5Ghz
-> I'm trying to fix this by making an SSDT the using SSDTPRGen script which was written by Pike R. Alpha, updates will follow later on. Thread: https://github.com/Piker-Alpha/ssdtPRGen.sh/issues/429
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