Should I upgrade my eMachines el1300g-02w to windows 10 and more ram?

Teion this is an old system adding ram will help but not increase your video chipset output the system is 32bit and as such any upgrade in memory will be limited by that. To actually speed up the system you should be looking at a SSD to replace the hard drive . Improving the machine with a upgraded video card will not be possible without a PCI slot . Downloading the latest driver for the onboard chipset which is a NVIDIA GeForce 6150 SE not a gtx 690 may help a bit . That being said we here on the ifixit forum love to fix whatevers broken and keep things going but if you really want to use this computer to play MMOs I would say no dont upgrade . It would be like taking a horse and buggy out on the autobahn or trying to keep up with a formula one race car with a beetle . You would be an annoyance to all you are trying to play with. Hope this helps

"I see in the specs that you can upgarde the RAM from 1GB to 4 which sould help a bit. The CPU is rather old and only single core. You could change it if it is in a socket AM2 to any other AM2 CPU. Since it uses Sata2 it could also be intressting to change to a SSD.

Update (02/14/2017)

I read that the video card is a nvidea onboard card. Acording to Cnet a

NVIDIA GeForce 6150 SE

Got to

http://www.geforce.co.uk/drivers

and choose Geforce and the Geforce 6 series."