360 rad vs 240 + 120, gpu water block question

in reality they offer the same dissipation. the only thing that separates the radiator apart from the loop order, is the construction/material of a radiator. This will affect your temps on idle and load.

if you have space, getting 1x360 will be the best idea as the restriction in your loop is limited to the other parts instead of the rad like the CPU block. BTW, the RX rads have minimal restriction. Price wise, the 240+120 will be higher - or so as frozencpu has shown.

If the question of pump comes up, the X2O pump in the rasa kit is much debated and discouraged from using. Some have had good spells with them while others say its the worst thing to have when you'll want to build up on your loop. If so, get the XSPC Raystorm (VPP) kit on frozen that goes for nearly $300. Its the best investment you can make as you get the Raystorm in the kit and the whole works like compression's. Regardless of going 240 or 360, the pump is strong enough to add more stuff to the loop like rads and blocks in the Raystorm kit.

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for a GTX560Ti 448 you' might want to look at universal blocks. a full cover block might be an issue as there is a IHS in some models of nvidia cards while some don't come from factory and the cooler is assembled to acc for the missing IHS due to a revised design. If the card has an IHS, the card will have temp issues.

cross reference some sites like watercool, aquacomputer, EK who make alot of FC blocks or contact them to see if they have a block that goes on your card.

and... as far as mem serves me, i think the GTX560Ti 448 is build on the 570 PCB so thats where you could start looking

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hope these help.