If you visit all the above & click on the 'Add To Compare List' button on each link & then 'Compare Now' you can view an easy side-by-side comparison.
You're right, there's very little between them, with the Plus edition boasting a '8-Phase Power Design' (under 'ASUS Unique Features') that the other two don't seem to possess.....
"8-Phase Power Design
Builds a steadier power supply environment and generates less heat.
ASUS 8-Phase Power Design keeps CPU and power module away from suffering risk of high power stress, which makes CPU lifetime much longer and system more stable. With High quality power components such as low RDS (on) MOSFETs for minimum switching loss & lower temperatures, Ferrite core chokes with lower hysteresis loss and high quality conductive polymer capacitors, it provides high efficiency operation to generate less heat than conventional power solutions and consequently achieve cool system environment."
You may compare more in the P5Q range (33 in total) by visiting click here, opening them in individual pages & doing as above. G
Er think I spelt that wrong, I have been in a flap picking the parts for this machine, not sure if its right yet. Reading reviews of each part drives me mental.
Maybe I get their in the end.
I amd Not convinced spending £35 on a HSF is required as I am not overclocking. But I do need to get a fairly quiet effective HSF, PSU & ATI PCI-Express graphics card maybe with connection for a HDMI screen depends on price.
Scan are doing a MSI P45 Zilent motherboard (click here) + Zalman H/S combo for under £66 click here (& scroll down a little) - it comes with a nice Zalman Aero Flower-cooler. That's your motherboard & quiet+quality CPU cooler taken care of in one go!
For the price, click on the 'BUY' link there & get free delivery with Scan via click here (easier) or click here. G