Amazon has got its title wrong (and technical specification details). I submitted a product catalogue correction, but they rejected it!
The model sold and received is actually the "ZOTAC ZBOX ID18 Plus SE (special edition)" (reference ZBOX-ID18-PLUS-E-SE), so has a 1.8 Ghz dual core Celeron 1037u CPU (better than described).
The standard edition/regular Zbox ID18 (barebone, also sold on Amazon marketplace) comes with a slower 1.5Ghz Celeron 1007u.
This is also the Zbox model, not Nano model at all (despite word in product title).
Exact specification from the manufacturer: http://www.zotac.com/uk/products/mini-pcs/zbox/product/zbox/detail/zbox-id18-plus-se.html
Very good nettop/HTPC computer for running XBMC/Openelec, Windows 7 or Windows 8.1 64 bits (not included), Netflix HD, YouTube HD etc., or as a very quiet/low power consumption web server or NAS.
* Good CPU and Intel HD GPU: may only be an Intel Celeron, but suitable for h264 1080p full HD video playback (10% load on CPU), Flash HD streaming (20% load), basic older games, web browsing etc.
In term of responsiveness in Windows 8.1, boots quicker and feels as responsive as my laptop, powered by a Core i3 3rd Gen CPU, 6GB of RAM, and which also has an SSD as a main drive
* Low energy/wattage used (10-15 watts idle), and therefore very quiet, almost silent (fan settings/thresholds in the BIOS can be adjusted)
* Small size (19 cm x 19 cm x 4cm), around the same size of an Acer Revo 3610/3700 or RL70/RL80. Half the depth of a Zoostorm small factor PC
* 4GB of RAM installed in one slot (second slot still free). 4GB is already plenty for Windows 8.1 (which is more memory efficient than Windows 7)
* 64GB SSD sata drive/storage installed (can be upgraded/replaced, since installed on a normal Sata 2 port) and is very fast
* Plenty of USB ports: 4 x USB 2.0 ports, 2 x USB 3.0 ports
* 10/100/1000 Mbps Ethernet network port (wired)
* Plenty of ports: eSata port, HDMI and DVI outputs, Digital audio output
* 5 year warranty from manufacturer, if the purchase if registered on their website within 28 days: "The ZOTAC Extended Warranty Programme adds an additional 3-year warranty for a total of 5-years (Europe)"
* Easy to access the internal components, without a screwdriver
* Only small drawback is lack of on-board wifi, but with 6 x USB ports in total, one can be used by a cheap Wifi dongle (£5-£8). It could actually be beneficial, as some USB dongles have external antennas, more efficient than built-in antennas in PC cases
* No OS included (but can easily use some free ones, like OpenElec)
* Power cable is European 2-pin type/plug (but easy to find replacement lead for around £2). Letter E in reference "ZBOX-ID18-PLUS-E-SE" stands for EU power plug. Computer is actually sent from Poland by Amazon, using UPS
* Bright red led showing when device is off, and light bleeding inside of device (making it look a bit cheap)
Can't currently find anything else better, with similar CPU and small form factor, for that price (including barebone Zbox ID18, Acer Revo, Zoostorm small factor, Lenevo Q90 or Intel NUC barebone computers). Seems to beat many of those on noise/power used, CPU, number of ports available and of course warranty.
It's surely a big improvement in term of CPU and speed from my previous Atom-based Acer Revo R3610 media PC (couldn't really handle Flash HD, and built-in wifi was using a lot of CPU), although the build quality of the Acer was slightly better.
However, for people looking for a small and quiet office PC (as opposed to a media PC) running Windows, the Zoostorm small factor PC (with the same 1037u CPU and SSD size) seems to be an excellent choice too, and would beat the Zotac on price, as it includes a Windows 8.1 licence, wifi and a DVDRW drive for only £196:Zoostorm 7270-8004 Ultra Small Form Factor PC (Intel Celeron 1037U 1.8GHz, 4GB DDR3, 1TB HDD, Wi-Fi, Windows 8.1)
(select the 64GB SSD version)