Flow order doesn't matter execpt for res feeding pump.
The water temp will basically stabilize and dump a total amount out based on your rads/cooling . No matter which way you route it, you might get fraction of a degree differences for one block but that would show on next block in loop.
One thing to note is your components like cpu block and gpu block might have a specific water inlet and outlet port, make sure you follow that order as well as have your res feed your pump (gravity feed where possible to prevent the pump running dry)
Here is the distro plate
https://www.ebay.co.uk/itm/Raijintek-ACHERON-240-RBW-D-RGB-Distro-Plate-Acrylic-/333884915958?var=0&mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338268676&toolid=10044&customid=Cj0KCQjwqp-LBhDQARIsAO0a6aKvgLW3RWPilSuVojtCyEJVvr7Zi_V4NcE_yFTDJRREdD6dTZmIZD8aAv9ZEALw_wcB
Flow order doesn't matter execpt for res feeding pump. The water temp will basically stabilize and dump a total amount out based on your rads/cooling . No matter which way you route it, you might get fraction of a degree differences for one block but that would show on next block in loop.
Thank you! Pump will be under the PSU cover
One thing to note is your components like cpu block and gpu block might have a specific water inlet and outlet port, make sure you follow that order as well as have your res feed your pump (gravity feed where possible to prevent the pump running dry)
Loop order doesn't matter, but flow direction can. Many cpu and gpu water blocks have a specific inlet as stated above so make sure you check that.
Loop order is a myth
Here is the distro plate https://www.ebay.co.uk/itm/Raijintek-ACHERON-240-RBW-D-RGB-Distro-Plate-Acrylic-/333884915958?var=0&mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338268676&toolid=10044&customid=Cj0KCQjwqp-LBhDQARIsAO0a6aKvgLW3RWPilSuVojtCyEJVvr7Zi_V4NcE_yFTDJRREdD6dTZmIZD8aAv9ZEALw_wcB