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Hi guys, My Mac Pro 1.1, with 2-2,66Ghz dual-core Intel Xeon processors is not working proper anymore. I would like to change out the CPU’s. instead I’ll get 2 Xeon Quad x5355 CPU’s and push up my system to an 8 core. I’m told it should work by my technical dealer, but I’m not sure if the power supply will supply enough power. I would also like to change my graphics card, which should i get? My dealer recommend an ATI 5870 or ATI 4870. How loud are they compared to NVIDIA GeForce 7300 GT? or which would you recommend? Also how can I find the information on what works. Can someone with experience in changing out the CPU’s on the Mac Pro systems help me here. i just want to know, if my Mac will work with the new CPU boost, and which graphics card you recommend? Many thanks! Serious Stets
In addition to your potential power supply problem you’ll have firmware problems if you attempt to use a CPU that was never built on this logic board byApple. If this Answer is helpful please remember to return and mark it Accepted.
Hey FX Your pro is now using 8 cores - WOO HOO! To the people who were all worried about power supplies and such - you are not well versed on the subject. 4-8 core upgrades have been done on Mac Pro 1.1’s for a long time. If you want your processors properly recognized and some fine tuning for your fan speed, you need to look up ‘Mac Pro 2.1 Firmware tool’. You can read a good thread, and probably a download, here. http://forum.netkas.org/index.php/topic,… You will need an internet connection. The package is a script that downloads and installs the appropriate files. I (and many others) have done this and all works quite well. Cheers, AJ
5355’s will work just fine! Head over to xlr8yourmac (dot com) for instructions and success stories. There all also good teardown videos on YouTube. You will have to do a 2.1 Firmware upgrade. No big deal. I did mine. I used 5345’s 2.33 GHZ), because I got a pair for $35! I have a whole new computer. I dod video and multitrack audio - so it is badly needed. Cheers, TJ
I also have a Mac Pro 1,1. I replaced the dual 5160s with 5355s. I replaced the stock ATI video card with an ATI Radeon HD 4870, and have 6 SATA drives running. (2 are in the DVD drive bay) No power issues. For the firmware, see http://forum.netkas.org/index.php/topic,… (need to sign in to see the downloads) There is a “Mac Pro 2006-2007 Firmware Tool” available that will upgrade the firmware to show the correct processor name and type, and also recognize the Mac Pro as a Mac Pro 2,1.
I replace my 2,66Ghz dual-core in my mac pro 1.1 to Xeon Quad X5355 Matched Pair SLAEG Socket 771 2.667GHz/8M/1333. Working fine ! Only in System Information tab you will see Processor 2 x 2.66 GHz Unknown, but Number of Processors: 2 and Number of Cores: 8. Geekbench test before was about 5400 score and after replacement is about 9300. About 4000 scores more !
Heya MacPro 1.1 Users ! I just upgraded my ATI5770 graphic card to Nvidia Quadro K4000 with 3GB of ram. This card is smaller than my old ATI (only 1 slot) and has the same 6pin power cable only. Working awesome ! 4K from my Lumix GH4 ? No problem ! Cuda rendering ? No problem. Maya viewport very fast ! But, first of all you need to upgrade your system to OSX 10.9 I recommend to use this very, very simply method: http://www.oemden.com Cheers, Dirk
Please, my cpu is dead, I´d like to upgrade with x5355 cpus but I have a question. Can I install then first and upgrade the firmware later? Because my mac is dead right now. Thanks a lot.
Would E5462s work in it?
Hey Guys, I just upgraded the CPU’s on my mac pro 1,1 from 2x2.66 dual cores x5150’s to 2x3.0 quad cores x5365 and it boots up like a charm but I am having trouble upgrading the firmware from mac pro 1,1 to mac pro 2,1. I am using the “Mac Pro 2006-2007 Firmware Tool” and when it downloads the files and shut down, and then I hold down the power button at startup till the light flashes and goes through the process, it just comes back saying that its still a 1,1 and doesn’t fully recognize the processors. It says 2 x 3.0 Unknown (but recognizes that it’s 8 cores). Anyways, how do I go in and upgrade it from 1,1 to 2,1?
