While overclocking or updating to a slightly better am3 cpu or even upgrading to a better graphics card might help, you just aren't going to get much out of those. A graphics card upgrade is a better choice because it will increase the performance the most when it comes to price/performance gains.
However, your best choice would be to completely upgrade the computer, these days you would be surprised what kind of great computers you can build for under $500, you can build something with an i5 9600k for about $450 without a graphics card, and the intel graphics processor in the cpu will blow away your current gpu.
If you're trying to get something even cheaper you can even build a ryzen 5 2400g setup which is slightly less powerful than an i5 9600k but still a beast of a processor for the price, you'll easily be able to have a whole setup for about $330 and it will still blow away your current pc. And when you need more power in the future with either of these build you can at any time buy a graphics card and stick it in there to boost your performance by a lot.
If you cant afford either of these or would rather not spend that much money your next best bet is to upgrade your graphics card, AMD RX 570 is a great choice for about $140 and if you can spend a little more I would recommend the RX 580 for about $180. (MAKE SURE YOU PAY THE EXTRA $10 FOR THE 8 GB VERSIONS)
In conclusion, upgrading from a 1035t to 1100t or overclocking will gift you minimal performance and is more or less a waste of money, new hardware is cheap and infinitely more effective than the older hardware, in my opinion if you see yourself using computers for a while you should just bite the bullet and build a new computer, I could make a list for you too if you want that option.