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Showing content with the highest reputation on 11/06/12 in Posts

  1. NOTE: The US$180 BPlus TH05 (inc Thunderbolt cable) native Thunderbolt adapter used in this implementation was recalled in Jan 2013 due to (presumably) threats by Intel/Apple per TH05 recall notice. As a result refer to this solution that can be implemented today: [URL]http://forum.techinferno.com/diy-e-gpu-projects/4570-%5Bguide%5D-2012-13-rmbp-gtx660-sonnet-echo-express-se-%40-10gbps.html#post63754[/URL] (recommended for 15" rMBP/MBP due to iGPU issues) or 2013 11" Macbook Air + Win7 + Sonnet Echo ExpressCard + PE4L + Internal LCD [US$250]. While reading some threads about EFI-Boot on Mac I finally made my eGPU work. I fixed my "error 12" by enabling VGA Output on the PCI bridge connected to my Thunderbolt ports using the EFI-Shell. For this task I installed rEFIt and used "pci -i -b" / "pci xx xx xx -i -b" to find VGA devices and their bridges. I noted all Bus/Dev/Func as well as the required registars. After that I had to set those registars using "mm". On a Mac Book Pro 15" 2012 you'll have to do the following: 1. Install rEFIt 2. In Mac OS mount the EFI partition using terminal: mkdir /Volumes/EFI sudo mount -t msdos /dev/disk0s1 /Volumes/EFI 3. Create a textfile called "startup.nsh" in it's root: echo -off echo "Setting Registars" # IGPU Intel HD 4000 # I noticed some improvements in boottimings while deactivating the Intel HD # (don't use this if your running a 13" single gpu model) mm 00020004 1 ;PCI :0 # eGPU PCI Bridge # this line does the magic by enabling VGA Output mm 0001013E 1 ;PCI :8 echo "Booting Windows" fs0:EFIBootootx64.efi 4. Reboot while eGPU is connected (SW1=1) and select "start EFI-Shell" in rEFIt. "startup.nsh" launches and Windows 8 starts up with eGPU enabled. Update: Replaced rEFIt with rEFInd which is is a fork of rEFIt. I'm now able to create an menuentry which boots Windows using my startup script. I'm also able to hide the non functional Windows entries. Here's my current refind.conf: timeout 20 hideui banner showtools shell, reboot, shutdown dont_scan_dirs EFI/Boot, EFI/Microsoft menuentry "Windows 8 with eGPU" { icon EFI efindiconsos_win.icns loader EFI oolsshell.efi options "fs0:StartupseGPU.nsh" } Update (experimental): Thanks to Linux's "apple-gmux" developer Andreas Heider I was able to switch graphics before booting Windows and enable Intel HD as primary VGA device. Though Intel HD is still bugged this probably allow us to enable Optimus functionality in the future. You can also boot with Intel HD enable by installing gfxCardStatus 2.1.1(!) and setting it to integrated only, too. For now you'll receive a black screen and reboot due to some "igdkmd64.sys" error. Add this to your startup.nsh before "mm 0001013E 1 ;PCI :8": echo Switch select mm 7C2 1 ;IO :1 stall 100000 mm 7D4 1 ;IO :28 echo Switch display mm 7C2 1 ;IO :2 stall 100000 mm 7D4 1 ;IO :10 echo Switch DDC mm 7C2 1 ;IO :2 stall 100000 mm 7D4 1 ;IO :40 echo Power down discrete graphics mm 7C2 1 ;IO :1 stall 100000 mm 7D4 1 ;IO :50 mm 7C2 1 ;IO :0 stall 100000 mm 7D4 1 ;IO :50 echo enable eGPU mm 0001013E 1 ;PCI :8 echo Boot Windows fs0:EFIBootootx64.efi Some numbers: Model: rMBP 15" OS: Windows 8 EFI-Boot CPU: Intel-i7 3820QM @ 2.7gHz RAM: 16GB iGPU: Intel HD Graphics 4000 (broken for Win8) dGPU: Nvidia GT 650m Adapter: TH05 I tried some overclocking and ended up with some strange results for 3D Mark 06. No matter what you change you'll have lower points than default settings. dGPU GT650m eGPU GTX 560Ti eGPU GTX660Ti eGPU GTX660Ti OC 3DMark 2011: 2431p 4415p 7110 p 7463 p 3DMark Vantage: 10633p 16755 p 23810p 24702p 3DMark 2006: 15289p 17479p 17979 p like 15900? This might work for BIOS boot aswell but I don't know how to launch an MBR partition. (Update: BIOS method by nando) I'll try to tweak this a bit and hope for an Intel fix. Is there anyone with some more knowledge in EFI Shell?
    1 point
  2. Pictures of the mod: I made an airduct mod with some aluminium tape, you can also see the four ram heatsink on the Gpu heatsink Other view Same here with cpu and 3 ram heatsink Other view Inside of the modded backplate, you can see the thickness of aluminium tape that will be in contact with gpu/cpu heatsink Close up in the cpu side Close up in the Gpu side modded Backplate installed
    1 point
  3. ok so after playing around with the vbios patcher and messing with some 2d overclocks i managed to patch a very stable vbios on my 7970m. the settings are core 3d 1000 memory 3d 1500 voltage 3d 1075 core 2d 350 memory 2d 250 voltage 2d 850 no flicker what so ever, and because i never take this laptop off my coolermaster sf-19 i don't mind the higher clocks/temps @ 24/7 idle 47ºC / load 71ºC very happy with the overclock now, thanks again svl7
    1 point
  4. My first suggestion would be to see if the fan intake and fan outlet is blocked by dust of any kind. If it is, it will prevent the cooling system from keeping the GPU temps under control. Also, it may not be a bad idea to take the bottom panel off and blow a can of compressed air into the fan itself to blow out the dust. Not the whole can obviously, but just a little to clean it out.
    1 point
  5. You should listen to @Xonar. It's hardware-bound. Just because something's hidden in the bios it doesn't mean that it actually works.
    1 point
  6. Welcome to T|I Xonar. Talented individuals are always welcome here. That's funny. Crazy stuff like that doesn't happen at T|I. You must be thinking of NBR where every time they get a phone call from Dell; posts and threads magically start to disappear. Throttling, what throttling? My favorite is when a mod arrives and proclaims that quite a few posts needed to be cleaned up. aka. Deleted. Over here at T|I if you buy a laptop and it turns out to be a piece of shit, don't be afraid to come to the forums and tell it like it is. Honesty is appreciated over here. It is definitely not a reason to be banned. I also got fed up with other sites stealing my work and distributing it as if it was their own. That's why the ThrottleStop beta editions expire and the link takes users directly to Tech|Inferno.
    1 point


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