Archive for the 'Apple' Category

New imacs…

M290X is radeon HD 7870 but at lower 900 mhz core clock. A bit slower than 780M you can find in current Imac.
and it comes with 2 gigs of vram, kidding?

M295X is some tonga chip, probably full tonga chip ( equal to 7970). Will be like one D700 of newMacPro.
4 gig vram here.

That’s too weak to play anything at 5K, they even will struggle at 2560×1440. Only for 1080p gaming.

SmartWatch typical everyday usecases

For those waiting for applewatch.

I’ve been using sony’s smartwatch 2 for a half year now. After initially playing a lot with it for few weeks I came to these typical usecases, asuming the phone is in the pocket:

1) read incoming sms/emails. Answering using a watch is JOKE, you will almost never do it, be it dictation, templates, smiles, or onscreen keyboard (like in latest samsung stuff), easier to pull phone off the pocket. wathes vibration help to do not miss any.

2) read notifications from apps.

3) see who is calling you, dismiss call if needed. you don’t want to press answer on watches because the other side will hear you pulling the phone out of pocket.

4) check time and weather on main screen.

5) control music (play, stop, next, etc)

That’s all, rest is just gimmicks you will play with for few weeks.

Not talking about some fitness tracking abilities. It’s just about average Joe.

Slow Radeons 7xxx+ on MacPro3,1

It’s known for a while that GCN radeons are low performers on 2008 MacPro using OSX 10.9

And the reason for this is…..


Apple fucked up some CPU power management resulting in videocard not running properly. plz fix.

Just remove AppleIntelCPUPowerManagement.kext and AppleIntelCPUPowerManagementClient.kext if you like to workaround it, speedstepping still works, cpu isn’t hot/cosuming a lot, still drops the clocks.


Efi bootloader for 32-bit efi macs and osx mavericks.

Hello. It’s a bit old, but still awesome news. An osx bootloader for old macs with 64-bit cpu but 32-bit efi (like macpro 1,1/2,1). Can boot osx mavericks, supports efi in osx, so nvram, firevault and other things depending on efi runtime calls will work.

Check it out here


OSX 10.9.1

cat /System/Library/Extensions/AppleKextExcludeList.kext/Contents/Info.plist | grep netkas

32-bit boot.efi actualy can boot 64-bit kernel

Looks over here – They are patching 32-bit boot.efi to make it loading 64-bit kernel. Obviously such functionality cant be added if it werent present at all. So they just disable the check/lock preventing it. ML on original macpro.

So, greedy Apple, can boot 64-bit kernel on all their macs with 64-bit cpu but decides not to!

Moiuntain Lion Sources released

So, Apple released sources of some components of mountain lion, like xnu kernel.

Just for fun, I’ve built 32-bit xnu kernel –

Running openCL on gtx670

more here

long story short – by default opencl doesnt work on gk104 but works on apple’s gk107 from new mbps. Now it works on gk104 (gtx670-gtx690)

Update: obviously ML drivers are much better (still need a patch so)

Enabling OpenCL on 10.7.5/mbp2012 drivers and ML GM

10.7.5/mbp2012 drivers run opencl on Fermi just fine out of box, no more need to enable it binpatching, but..

If you have a card with more than 2 gb of video memory, opencl suddenly gets disabled, wtf?

Here is why: (warning, assembler skills needed for the pic)

basicaly, if your video ram amount > 2GB by at least 1 byte, then you are screwed.

Funny Apple, they decided to control it themselves instead of putting check in the nvidia driver.

But, we can just disable the check and enjoy.

The file you wanna patch is /System/Library/Frameworks/OpenCL.framework/Versions/A/OpenCL

Just do these two simple patches you can do with any hex editor and you are good to go:

1) for 32-bit part:
find 3d 01 00 00 80 73 e7
replace with 3d 01 00 00 80 90 90

yes, its just last two bytes to disable the check
2) for 64-bit part, for lion
find ff 50 68 48 39 d8 73 e5
replace with ff 50 68 48 39 d8 90 90

for mountain lion
find ff 50 68 4c 39 e0 73 e7
replace with ff 50 68 4c 39 e0 90 90

P.S. doesnt applies to gtx670/gtx680, they have a different problem

MBP2012/10.7.5 nvidia drivers are leaky

The nvidia drivers from mbp2012(and from 10.7.5 beta, they are same) are really leaky one.

For example, yeasterday I had a site with many flash ads openned in opera and bam, kernel (kernel_task, video driver is part of it) eats 690 MB of memory. Normally its around 200mb.

Watching an online video in flash player – 700 mb for kernel_task

Only happens when nvidia card installed, no problem with ati.

Be aware.

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