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Dell Precision 470 / 670 workstation - Snow Leopard/Lion/Mountain Lion/Mavericks/Yosemite

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Updated Ok to 10.10.4, using exact same kexts replacement as for 10.10.3 and same AMD kernel from Bronya.



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Bronya having released a few 10.10.5 AMD kernels for some time now, I finally decided to give them a try on the old lady. I've tested RC1, RC2 and RC3 and all work perfectly... as usual! Again, IOPCIFamily kext replacement is required to avoid white screen issue with the nVidia GeForce 9800GT. No replacement of pthread kext required.




Works as well after Security update 2015-006.



However, I must admit that system performance is quite poor and laggy. Can't say it's a surprise on a 10yr+ old system...


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Just fitted one of those in the PCIe x8 (operates at x4 max) slot. Great cheap PCIe add-on card for this older SATA-I/PCIe 1.0 workstation. PCIe x4 may be a must for maximum/SATA-III performance.


Made some quick performance comparisons with the BlackMagic app in Mav 10.9.5 and Yos 10.10.5:


SSD off the integrated ICH5 SATA-I (150MB/s) non-AHCI controller (no Trim)

  • Read: 132MB/s
  • Write: 127MB/s


SSD off the PCIe x1 (v1.0, i.e. 250MB/s) Marvell SATA-III (600MB/s) AHCI controller (Trim enabled)

  • Read: 215MB/s
  • Write: 145MB/s


Looking forward to try out a PCIe x4 controller now.

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