The below list includes 20 acrylic CPU Blocks for PC watercooling that are ranked top to bottom in terms of aesthetics. This list is based on aesthetics ONLY and not performance and purely my own personal opinion. The individual blocks have not been tested or reviewed other than gazing at them longing online. 🙂

Click on the link to find out more about the block!

Disclosure:
Some of the links are Amazon affiliate links.
The only brand listed below that has sent me products to test before is Alphacool, and not the block on this list.

1		Optimus	Foundation	Link to the Block
2		Phanteks	PH-C350I_CR01	Link to the Block
3		Alphacool	Eisblock Aurora	Link to the Block
4		EK	Velocity	Link to the Block
5		Aqaucomputer	cuplex kryos NEXT	Link to the Block
6		Phanteks	PH-C360I_CR01	Link to the Block
7		Corsair	XC9 (HydroX)	Link to the Block
8		Bykski	unknown name	Link to the Block
9		Watercool	HEATKILLER IV PRO	Link to the Block
10		Swiftek	Apogee XL2	Link to the Block
11		Bitspower	Summit M	Link to the Block
12		XSPC	Raystorm	Link to the Block
13		Ashata	Richer-R	Link to the Block
14		Freezemod	unknown name	Link to the Block
15		Barrow	unknown name	Link to the Block
16		Bykski	Wheels Hub	Link to the Block
17		Barrow	LTYKB-ARK	Link to the Block
18		Phobya	UC-2	Link to the Block
19		ThermalTake	Pacific W3	Link to the Block
20		Aveks	Unknown name	Link to the Block