X4 640 is a futures product of 42NM old technology. At the price of 500+, it is completely exploded with X4 750K, which is also tens of dollars cheaper, and its performance is 20%-30%.

The motherboard is replaced by Huaqing FM2A75M-DGS R2.0 360+. To be honest, I can't understand what your motherboard 800 series means.

In terms of graphics cards, colorful GTX650 is still popular. Choose sapphire HD7770 at the same price, one card, one grade higher than GTX650, and 10%-20% stronger.

Memory, DDR3 1333 or DDR3 1600? The former is almost eliminated and the price is the same as the latter.

Hard disk, just write SSD+HDD, who knows the capacity and brand? SSD size, 32G is enough for the system, 64G is barely enough for daily use, 120G is the mainstream, and HDD is now the mainstream1t.. Just choose Seagate or WD. Old brands have quality assurance.