Seems that the term 'Pentium 4' was the cause for my confusion. Granted, it doesn't take much to do that.
ECS is not a brand with which I have good experiences with. Also no bad experiences, only meh ones. But I also must disclose then that my love for Asus motherboards runs very, very deep.
The list of supported CPU's for that particular motherboard is quite extensive and varies a bit depending if it is version 1
or version 7
Never mind the exact model of Pentium Dual Core processor is actually in the PC of CleverCat, you do need a bit more patience with those processors than with the Core2 processors. But as long as you restrain from AAA-title gaming and video-editing Windows 10 will do quite fine, especially when the motherboard has the max amount of RAM (4GByte). Here in Paraguay, DDR2 RAM modules are really expensive. Assuming this is the same case in South Africa, it is not a financially smart move to max out the RAM on her motherboard if her computer has less RAM than 4GByte.
There is a noticeable difference in PC performance when one maxes out RAM. That and the addition of a SSD hard disk will give any PC a big boost in speed. But both are investments one should make only if there is the impression that the system will still be usable for 3 years or more. I did exactly this with one of my core2 PC's, cloned the Windows partition and Programs partition to a 120GByte SSD (I keep things very separated on my hard disks) and it runs great. From plugging the power cable into the socket to a fully workable Windows desktop takes 20 seconds on average (and this includes typing in my password).
The latest AAA-titles won't work well on this PC, but older ones became more enjoyable. And for practically all other common activities the PC became good to great again. For me the investment of 150 USD (90 USD for a Samsung EVO 840 SSD, the remainder for 4GByte of DDR2 RAM) was well worth it. I am sure it will be the same for CleverCat. After all, it remains cheaper than buying a whole new PC and should be a consideration for anyone wanting more speed and enjoyment out of their system, while having only a small budget available.