Whats a good AMD Processor?

Ok all i have motherboard/ram and processor AMD FX4300 quad core for my other pc replacing old for new things(one that over heats and is only lol 512mb was 2gb).
But my question is what is a good AMD Processor starting from AMD FX4300 quad core an up? 
I prefer Intel's but this is for other computer (not my gaming computer i am getting that one is going to be way better with somewhat cheap intelI7)

Beavis should know what computer i am talking about when i say 512mb, lol.

My last experience owning an Amd motherboard was in 2000 when I built a home server for kingpin, quake 3 and Mob rule. It was an Amd thunderbird with a whopping 1200 mhz. I've heard that their new 4x and 8x cores are on par with intels. Heres a pic of the "Killer" gpu I had it it(it was 500 dollars!!) 

http://www.ixbt.com/video/images/blue-ti500/herc-ti500-card-front.jpg



At the time it was the most advanced gpu ever made It had a 350 mhz processor and 512 mhz of video mem..........lol

ok thanks kidd. 
i might just change his processor for inteli5 since he dont play much big games anyways. 
his graphics card is a gt630 which was cheap and it can handle wolfenstein and no more room in hell, i dont much play big games like WoW, im just looking for a gtx card or any card (Nvidia) i can use on high on 85 percent of games i play.

That's like asking what's the best engine for a custom car. The answer depends on many things.

Because of internal processor architecture differences, you cannot easily compare current Intel and AMD processors by looking at the CPU specs.

In addition to the CPU, the system's overall performance will depend on the other hardware components (GPU, motherboard, memory, drives, etc) and the software systems you're planning on using (OS, games, Photoshop, web hosting, etc).

The best way to compare system performance is to use benchmarking software. The best site for hardware comparison is Tom's Hardware:

http://www.tomshardware.com/

Their benchmarks may or may not include your specific hardware, but it should include something similar, so at least you have an idea.

As for overall system performance, unless you're using identical hardware (GPU, motherboard, memory, etc) with different AMD and Intel CPUs, you will not be able to identify which CPU is better in a given benchmark test. 

This comparison will also probably be impossible, since modern AMD and Intel CPUs use different CPU sockets and motherboard chipsets, so decent motherboard manufacturers (Foxconn, Asus, Gigabyte, etc) will probably not make a single motherboard that supports both CPUs.

The bottom line is, define your budget for the system or hardware component, compare them using benchmark tests for your target application, then buy the best option within your budget.