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Hackintosh GPU half speed, proving needed!


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#1
copperboy

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[Updated]:

I am thinking that Apple is doing something special to make the graphic performance of hackintosh staying half. I don't have many cards to prove this. If you guys are interested, please post CUDA-Z screenshot compared to CUDA-Z in Windows.



CUDA-Z can be found here:


http://cuda-z.sourceforge.net/

[Old Post]
I thought I had built a perfect mackintosh, but I was wrong. The GPU kept running at half speed :(
I changed smbios from MacPro 3,1 to iMac 12,2, and I noticed that AppleGraphicsPowerManagement.kext was loaded, but the GPU was still running half speed no matter I kept AppleGraphicsPowerManagement.kext or had it removed.
Please see the pictures. Performance in Windows 7 is much higher than that in OS X.

Attached File  gpu-win.jpg   41.41KB   66 downloads
Attached File  gpu-osx.jpg   106.24KB   61 downloads

=== Software ===
OS X: Mountain Lion 10.8.3
Method:Un1beast + Mu1tibeast + DSDT
CPU Speedstep: Perfect
Sleep, Wakeup, Restart, Shutdown: Perfect
LAN, Audio: Perfect (Yes, even recording from mic)

=== Hardware ===
Gigabyte GA-EP43-US3L
Pentium Dual Core E6300
Nanya 2GB DDR2-1066 *2
Gigabyte GeForce GT240 with 512MB GDDR5
WD 320G SATA HDD

#2
copperboy

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I re-flashed the bios of GT240, nothing changed. I removed

AppleGraphicsPowerManagement.kext in order to keep the gpu running at full speed, but it kept half of the speed it should be. I edited the plist file in

AppleGraphicsPowerManagement.kext, the problem still exists.


I am thinking that Apple is doing something special to make the graphic performance of hackintosh staying half. I don't have many cards to prove this. If you guys are interested, please post CUDA-Z screenshot compared to CUDA-Z in Windows.


CUDA-Z can be found here:

http://cuda-z.sourceforge.net/

#3
Rogiervd

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Weird, going to test this friday.

#4
copperboy

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Weird, going to test this friday.

Okay, don't forget to post results :)

#5
Rogiervd

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Mine isn't running as fast on my ML drive as on my windows. But it isn't so noticeable like your's.


http://postimg.org/image/l40o2s2jl/

http://postimg.org/image/wp363pn0t/

Don't know how to attach it like you did.

#6
copperboy

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Congratulations. Your GPU works just right both on Windows and Mac.
I think it might be the problem that GT240 is not compatible enough with OS X.

Mine isn't running as fast on my ML drive as on my windows. But it isn't so noticeable like your's.


http://postimg.org/image/l40o2s2jl/

http://postimg.org/image/wp363pn0t/

Don't know how to attach it like you did.







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