I recall reading that the memory on all ultras was 1.6ns, however this page lists the Albatron ultra with 2.0ns memory. Is this right, obviously you wouldnt want to buy an ultra with slower memory?
http://surpass.com.au/content/standard.asp?name=ProductInfo&productinfo=17603
http://surpass.com.au/content/standard.asp?name=ProductInfo&productinfo=17603