InsanelyMac Forum > A few questions about SpeedStep and my e6750

Full Version: A few questions about SpeedStep and my e6750

InsanelyMac Forum > InsanelyMac Lounge > The X Labs > Intel SpeedStep

NewKindOfWorld

Jun 25 2009, 12:54 PM

Hi !!

Just discovered this section, as I wasn't sure if SpeedStep worked OOB on a vanilla hackintosh 10.5.7, seems not

I have a C2D e6750, stock speed is 2.66 (8x333) o/c to 3.2 just to match my ram speeds (400 Mhz FSB).
So installed this kext, don't know if it's really working great, as I used tuxx's speedstep gui, and it shows only 2 frequencies, 3200 and 2400.
Does SpeedStep on hackintosh acts on fsb, cpu ratio, or both ?
And now that speedstep is installed, seems that my hackintosh start is 2 or 3 times slower, really annoying, and don't know why.

Any help/advice would be appreciated

Thanks !!

hackcat

Sep 5 2009, 01:39 AM

Check out DSDT - Vanilla Speedstep - Remove _cst errors for MB without C-states

I have an e6750 overclocked to 3.2Ghz and a P35-DS4 rev 2.0, and used my mobos p-states so it might not be the most tuned ones. I think I have some room to lower core voltage across all states.
x8 3200 @ 1.372v
x7 2800 @ 1.308v
x6 2400 @ 1.212v

CODE

Name (SPSS, Package (0x03)
        {
           	Package (0x06)  // P-state 1
                { 
                    0x0C80, 
                    0x0135BA, 
                    0xA0, 
                    0x0A, 
                    0x082A, 
                    0x082A
                },

                Package (0x06) // P-state 2
                {
                    0x0AF0, 
                    0x01025F, 
                    0xA0, 
                    0x0A, 
                    0x0726, 
                    0x0726
                }, 

                Package (0x06) // P-state 3
                {
                    0x0960, 
                    0x00CD35, 
                    0xA0, 
                    0x0A, 
                    0x0620, 
                    0x0620
                }
        })
        Name (NPSS, Package (0x03)
        {
            	Package (0x06)  // P-state 1
                { 
                    0x0C80, 
                    0x0135BA, 
                    0x0A, 
                    0x0A, 
                    0x082A, 
                    0x082A
                },

                Package (0x06) // P-state 2
                {
                    0x0AF0, 
                    0x01025F, 
                    0x0A, 
                    0x0A, 
                    0x0726, 
                    0x0726
                }, 

                Package (0x06) // P-state 3
                {
                    0x0960, 
                    0x00CD35, 
                    0x0A, 
                    0x0A, 
                    0x0620, 
                    0x0620
                }
        })

Do note I haven't yet figured out how to make everything work using vanilla speedstep on 10.5.8 ( no sleep and an audio stutter issue, stable otherwise)

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