E7200 to Q9400 have little upgrade value. Mainstream games are not upgraded much, so it is better to change the graphics card. Your E7200 is enough, so don't change it. If you need multi-core, it is enough to buy Q9300, which is about 900, so you don't need to change the fan. If you spend so much money on Q9400, it's not worthwhile to double the frequency. Selling your E7200 basically requires 400 yuan. As for the comparison between Q9400 and E8400, multi-core support is not necessarily better, but most games can win a lot! !

Q9550 box 1600, not worth buying! !

It's too expensive to switch to i5. Let's wait until later. If you want to change it, I'll give you a suggestion:

CPU:i5 750 boxes ￥ 1350

Memory: Kingston 2GB DDR 31333 300.

Motherboard: colorful flag P55. 5800 yuan

You can sell the rest of the board for 500, the memory for 400 and the U for 500, so it's still about 1000. Not bad, 2GB of memory is enough, and the statement that "win7 must have 4GB" is also bullshit. Besides, you don't need any professional design, 3D games are enough! ! Really can't. It's no big deal to increase it to 4GB. More 300 yuan. But playing large 3D games is basically the same. To be honest, it's about 0-3%. Of course, if you open or build more servers, that's another matter! What kind of motherboard do you want, ASUS, Gigabyte? Of course, the price has gone up, but this one is very good, the workmanship is good, the price is cheap, and it is no problem to cope with overclocking! ! Besides, you use it for general purposes.

Attached is the performance comparison between Q9300 and E7200:

/bench/default.aspx？ p = 75 & ampp2=62

Performance comparison between E7200 and i5 750;

/bench/default.aspx？ p= 109。 p2=62

It seems that it is worthwhile to upgrade from 1000 yuan to i5 750!

Comparison between Q9300 and i5 750;

/bench/default.aspx？ p= 109。 p2=75

The gap is not small, mainly because the i5 750 has great advantages in architecture and platform, and it is convenient to upgrade in the future.