Thanks for the reply, before the i3-540 i had the Athlon X2 250, sincerely, on skin, i didn't see too much difference in experience. I have to upgrade, "money too tight to mention" Simply Red sing. I was thinking to buy the Athlon II X4 740, it has a good price, overclocked a bit is the 5800K. My simple thought is --> if the X2 250, on common desktop usage, i had also no prob. with games, is almost the i3-540, the A4-5300 considering the evolution of the technology (AVX,AES, etc.) and if the speed of a processor is measured in MHz, without going crazy in 300 reviews and searches, the A4-5300 is a kind of jewel, maybe a little bit under the i3-540, but far more better than the X2 250.
Sorry for my inaccuracy
Depends on the program. In general, assuming the same clockspeed, the 1st gen Core i3 is about 12% - 15% more powerful than the A4-5300. That does not mean your performance will increase by 12% - 15% because there are some limitations involved and inefficiencies as well without getting technical.
An analogy would be a car with a 90 horse power engine that has a maximum speed of 85MPH. Dropping in a 180H horse power engine doesn't necessarily mean it can hit 170MPH.
You are right, in conclusion, i see often the mere question about which is the best, i think i will try the A4-5300, is a kind of feeling, you know. You could own a Bentley and drive at 40MPH every time.
Let me know if some review about this "Low Specs" CPUs is lying around, I have seen enthusiastic guys on YouTube about the A6-5400K, i think i will pair the A4-5300 with a Mini-ITX by AsRock, the other advantages now, for upgrading consciousness are more SATA 6, faster RAM (the bandwidth could be an interesting discussion), and the price finally. I will post my suggestions/result i think after Xmas.
Thank you very much for your time, keep in touch!