OS X 10.9.4 Update

I know this is a couple weeks late, but for those wondering, the OS X 10.9.4 update is safe on a 2006/2007 Mac Pro that’s hacked to run Mavericks. There’s no need to replace the modified boot.efi file if you’re going from 10.9.3 to 10.9.4. But, if you are using a combo updater (i.e. from 10.9.2 to 10.9.4), you will need to replace the boot.efi file.

I will write a script soon that will allow you to boot up on the Recovery Partition and run a script from Terminal to automatically replace the bootloader files. Stay tuned…


I received the new processors and put them in about a week ago. They work great! Temps are a lot more normal. There is still a slight difference in temps between the two processors but that is expected.

I’m positive the temps will go down with time. I read this article from someone who upgraded to the exact same processors as me. He states that his temps went down after a couple months. Apparently thermal paste needs to be “broken in”. It makes sense but I’d never heard of it before.

New Temps

Also, I upgraded the firmware from the 2006 (MacPro1,1) to the 2007 (MacPro2,1) using a utility found on netkas.org. This allows the “About This Mac” box to show “2x 2.66 GHz Quad-Core Intel Xeon” instead of showing “2x 2.66GHz Unknown” for the processor specs. **EDIT:** You can download the utility from here.

Xeon X5355 About This Mac

I took the liberty to encode a Blu-Ray movie to H.264. It worked fantastic! Temps were in the 80°C. It was a lot better than the last time I tried with the old processors! (Last time temps shot up to 100°C and the fans were going at full blast. It sounded like a jet taking off!!). I was very pleased with the encoding speed. On my previous Quad-Core Hackintosh, 1080p would encode at about 6 fps. This was encoding at about 24 fps!! That is amazing in comparison to my Quad-Core i7 Retina MacBook Pro that gets about 27 to 28 fps!

All in all, this 2006 (now converted to 2007) Mac Pro was well worth it in terms of performance and price.

Unmatching CPUs

So it turns out, the processors I bought weren’t correctly matched. One would consistently run about 10 C hotter than the other one. Luckily, the guy I bought them from on eBay was able to exchange them for me. (Don’t worry, I gave him good feedback!).

I should be able to put the new processors in this weekend sometime. Stay tuned for an update!

Upgrading the CPUs in an Original Mac Pro

Recently, I had an original Mac Pro fall into my hands. It’s the Quad-Core 3Ghz model. It’s not a bad machine for being free! The interesting thing is that this old Mac Pro geekbenched higher than my Hackintosh that I made a few years ago. So I figured it was time to scrap the hackintosh and go with the real Mac!

The only caveat is that the original Mac Pro doesn’t “officially” support OS X Mavericks. However, with the help of some people over on forums of MacRumors.com I was able to get it installed. I needed to upgrade the graphics card though since Mavericks doesn’t support the GeForce 7300GT that came with the original Mac Pro. Luckily I had an old PC GeForce 8800GTS that works just fine in the Mac Pro (as long as you’re running Lion or higher!).

Specs Detailed Specs

One problem with this free Mac Pro was that it was missing the memory card cage and rear fan. I purchased one of those off eBay for $20. For the mean time I had to hold the memory riser cards up by using so electrical tape (see picture below). I wanted to get some extra performance out of this Mac Pro to put it in a closer category with my 2.6Ghz i7 Retina MacBook Pro so, naturally, upgrading the processors seemed like a great idea! Apple released an 8-core version of the original Mac Pro and dubbed it the MacPro2,1 (as opposed to the MacPro1,1). This official 8-core version used two 3Ghz Quad-Core Intel Xeon X5365’s.

Looking on eBay, the only X5365’s were close to $200! Most were being advertised as an upgrade kit for the original Mac Pro. I decided to look at some similar processors and settled on the Xeon X5355. This processor is literally the exact same as the X5365 but runs at the lower clock speed of 2.66Ghz. I found a matched pair on eBay for $60! So I purchased them, along with some Arctic Silver 5 thermal paste and 16GB of DDR2 RAM for $25 at the local computer shop. The upgrade process went smoothly!!

Here’s the upgrade process in pictures:

Memory risers held up by electrical tape.
The two massive heatsinks!
Heatsinks removed
Removing the original Xeon 5160’s
New CPUs installed!
Cleaned off the old thermal paste on the heatsinks
Arctic Silver 5 applied
Memory Cage installed!
Final product! (Sorry the picture is a little blurry on this one!)


The new geekbench score blew the old one out of the water! All in all, even though this Mac Pro is close 8 years old now, it still is a very fast machine!! I’m excited to try and rip some of my blu-ray movies for the Apple TV!

UPDATE: CPU1 is running about 15 – 20 C higher than CPU2… I might need to reapply thermal paste to one of the processors. It could also be that I didn’t tighten down the heatsink enough. I will fix it and let y’all know the results!