Don't waste your money, that CPU was good I had it myself 10 years and 3 builds ago. Nowadays it wouldn't cut it for gaming.
That graphics card is also way behind and not a gaming card either. If you buy this machine you will be disappointed.
Unfortunately PC gaming isn't cheap, the words cheap and PC gaming don't go together. To be frank, if gaming hardware as cheaply as possible is a must, then a console is best.
An ok gaming PC will be around £600.