If the motherboard supports DDR3, using DDR3 memory is faster. DDR3 is tens of yuan cheaper than DDR2. But your motherboard doesn't support DDR3, or replace it with Gigabyte 770 or 870 motherboard.

There is also a graphics card, and it is best to buy one that supports DX 1 1. The price difference is not too much. Buy a new one instead of an old one. Nvidia Geforce GT430 and AMD HD5570 can be used.

The CPU frequency is higher, and AMD Athlon II X2 250 and 255 are the mainstream now.

Hard disk is now 500G mainstream, 260 yuan.

Of course, if you change according to the above, the price will be slightly higher, but it will not exceed 2900 yuan.