Dylzan, that model, which has been around for a while, is known for its fan issues, despite being a solid unit on the electrical part.
It is on sale at dabs.com and at scan.co.uk. The latter has misleading product images, since it is the P1-550B-BEFX model, whose official specs you can find here ("PSU Dimension (cm) : 8.6 x 14.0 x 16.0").