https://downloadcenter.intel.com/product/595/Intel-Xeon-Processors
Try this one

https://drivers.softpedia.com/get/GRAPHICS-BOARD/INTEL/Intel-Xeon-HD-Graphics-Driver-2019154454.shtml

Check out this 1 : https://downloadcenter.intel.com/download/29823/DL-Streamer

https://01.org/linuxgraphics/downloads

https://www.google.com/url?sa=t&source=web&rct=j&url=https://downloadcenter.intel.com/product/595/Intel-Xeon-Processors&ved=2ahUKEwjs7veTgODtAhX7UxUIHR04C3cQFjAAegQIARAB&usg=AOvVaw1n0T8Egizi4edKc8iE2jyE

For 3rd gen processors Beignet is an option, but E3-1225 is based on Sandy Bridge microarchitecture and has P3000 GPU onboard - it's a 2nd gen processor.
Try this (CPU only): https://askubuntu.com/questions/850281/opencl-on-ubuntu-16-04-intel-sandy-bridge-cpu

Ebay sitesinden baktın mı ?

https://software.intel.com/content/www/us/en/develop/articles/opencl-drivers.html#cpu-section - Found what I was looking for here.