I look at the value, then look at the performance of the cpu. Then cross reference that with what socket, what power draw, and category.
When you click on the link, it gives you the date the cpu first appeared, it's Passmark score, etc.
The question becomes is it worth trying to find a motherboard for 5 year old cpu that provides an excellent value, or are you better off with the latest cheaper cpu, with new technology?
It's been particularly helpful in situations where I have a motherboard, the cpu blows, like my Athlon 3200, and, for 25.00 I can buy a 3800 Dual Core that more then doubles the performance of the prior cpu.
Same with the Panasonic 51. I bought another one for 100 bucks, which has gigabyte enet, the cpu being a dual core, is twice as fast as the prior machines, and I can use all my old stuff with it.
Only problem is drivers, and after installing a SSD, it's still in the same century we are.
For instance if we knew what socket the cpu is, it might be possible to find a cheap, much faster cpu that might work in that socket.
Clocker:
Seems like those AMD chips went about 5 years, then boom. Wonder if they just got too hot? Maybe a better cooler? I know I tried a passive cooler on mine, and might not do that again. Went with power this time, since the chip is much faster. Looks like you went with a pretty decent cooler...
Is there another chip you might put in that motherboard that has lowered considerably in price? Last price in passmark for the chip you are using was 20.00.
In that era, when they went from single to dual cores the processors improved considerably, speed wise.
From a bit of research, these are the examples of AMD processors that would double, or more, the speed of the 545.
Don't know what socket your 545 uses, but these are close:
AMD Phenom II X4 20 AMD Phenom II X4 955 AMD Phenom II X4 980