mac pro 4.1 (2009)

Hello guys i have a weird problem with my mac pro 4.1 5.1 firmware. my fans are spinning fast even before chimes it starts with loud fans and spinning like 75 percent. on my readings its 900 600 rpm with tg pro my tempatures are all okay even with north bridge cooling is ok i have changed its...

So far (2021, Sept 19) Big Sur 11.6 generally works well (Mac Pro 4,1 flashed to 5,1). 11.5.2 to 11.6 took about 45 minutes including multiple (natural) auto-restarts. ----------------------------------------------------- I only (rarely) get hanging-reboots when I'm experimenting with...

I need some help from the many Mac Pro experts that populate this outstanding forum :) I was commissioned to upgrade a dual 4,1 (dual quad 2.93GHz) to a fully fledged 5,1 running dual X5680’s. The machine temps were running a little high and the fans were running speedier than usual, but I...

I just purchased a dual CPU tray to upgrade my single X5690. I am planning on purchasing a second X5690. I see the two methods available to me is to have them de-lidded or to use spacers and a thicker thermal pad. If I go the de-lid route, who is the best service to have the work done. I...

Hello everyone! I was doing an upgrade on my 2009 Mac Pro upgraded to 5,1 and noticed the North Bridge was wiggly, so I used some screws, sprints and nuts to re-secure it into place after getting rid of the regular Apple Northbridge holders. However, upon installing the new CPUs and booting -...

Is the USB connection between Mac Pro 4,1 Bluetooth module and the logic board the only way the module communicates with the system? Since removing my original Bluetooth module it seems there is not even a Bluetooth preference, so Bluetooth on my new combo mini PCIe card and my old Bluetooth...

I've got an early 2009 Mac Pro 4,1 that's often booting to a black screen that hangs indefinitely until I manually restart and try to power on again. This seems to happen about 60% of the time when I try to boot up. Tried resetting PRAM and NVRAM but these resets didn't resolve the issue...

Hi all I'm using a Mac Pro 4.1 (flashed to 5.1) with a non flashed GTX1060 with OS 10.12.5 and wanted to upgrade to High Sierra. To do so, I removed the GTX1060 and put my old ATI Radeon 4870 back in to be able to follow the described procedure http://dosdude1.com/highsierra/ Coming to my...

Hi, I am a newbie and I know the questions I am asking might have been answered before, but after searching the forum I couldn't actually find all the info which I require, so i'll really appreciate if someone could sum up all the info that I require in this post. Before I start I want to...