Here's all the upgrades in my Mac Pro 4,1 : r/macpro
Mac Pro 4,1 8 Core upgrade to 12 Core? | MacRumors Forums
2009 Mac Pro CPU Replacement (quad-core) - iFixit Repair Guide
How to 3.46 GHz 12 Core Processor Upgrade a 2009-12 Mac Pro , revised with Northbridge repair and re-thermal pasting update . – Creation Machines , LLC
Mac Pro 5,1 CPU Upgrade - Mac Pro Upgrade Series Part 2 - YouTube
2009 Mac Pro CPU Replacement (quad-core) - iFixit Repair Guide
MacPro 4,1 W3540 2.9 to MacPro 5,1 W3580 3.3 Upgrade - Step by Step Shots - Success! | MacRumors Forums
How to Upgrade Mac Pro Processor (Early 2009/MacPro4,1): EveryMac.com
The differences between the 4,1 and 5,1 Mac Pro - The House of Moth
2009 Mac Pro CPU Replacement (quad-core) - iFixit Repair Guide
MacPro 4,1 W3540 2.9 to MacPro 5,1 W3580 3.3 Upgrade - Step by Step Shots - Success! | MacRumors Forums
Upgraded Early 2009 4,1 Apple Mac Pro Tray to DUAL 12 CORE CPU 3.46GHz X5690s | eBay
Upgrading a Mac Pro 5,1 CPU for Photographers - Camera Jabber
Mac Pro 4,1 Dual CPU Processor Board Complete 2009 Apple 630-9402
Upgrading the CPU in a 2009 Mac Pro | by Paul Lefebvre | Medium
Mac Pro CPU Upgrade- Nehalem 2009 4.1 - 6cores now - YouTube
Upgrading Mac Pro 4,1 to 2 x 3.46ghz (X5690) | MacRumors Forums
Apple Mac Pro 5,1 CPU Upgrade Guide | 6-Core Xeon X5690 3.46Ghz - YouTube
SIX (6) CORE Apple Mac Pro 4,1 5,1 X5680 3.33GHz XEON CPU Upgrade Kit 5.1 4.1 | eBay
Mac Pro 4,1 5,1 x5680 CPU Upgrade Kit ND - Zephyr's Market
2009 Mac Pro CPU & RAM Upgrade to 12 Core - 4,1 to 2010 5,1 Firmware - YouTube
2009 Mac Pro 4,1- 5,1 CPU Tray with 6-Core 3.46GHz Xeon and 48GB RAM | eBay
Processor Board W/ Support tray - Early 2009 Mac Pro 4,1 Nehalem - Xeo - Part Haven
