With the sub-$100 Pentiums performing so well, Intel's $125 Core i3-2100 easily beats more expensive Phenom II and FX models. And the $190 Core i5-2400 dominates the sub-$200 landscape without challenge, really. As such, we're almost-shockingly left without an AMD CPU to recommend at any price point.
While it’s true that AMD’s multiplier-unlocked models appeal to tweak-happy power users, the company's overclocked game performance manages to either hang close to or fall just behind Intel's stock Core i3-2100. Pumping up voltage, multipliers, and, consequently, power usage seems like a futile exercise just to keep pace with an efficient $125 budget-oriented chip running at its default settings.
The biggest flaw with Intel's low-end offerings is that the Pentium family limits you to dual-core configurations. Our concern is that, outside of a game, you're going to find situations where the two cores hurt performance in other applications. Having said that, the Pentium G630- and G860-based machines were snappy throughout testing, and their lack of Hyper-Threading didn't negatively impact our experience.
AMD’s Phenom II X4 955 and FX-4100 could certainly appeal to buyers who insist on the ability to handle four threads at a time. At their $125 and $110 respective price points, however, they’re too close to the Hyper-Threaded Core i3-2100 to earn a distinguished recommendation. In our last sub-$200 gaming CPU round-up, we showed that the Core i3-2100 can match AMD's Phenom II X4 955, even while background tasks run in parallel with a game. So, we couldn't even speculate that Intel's Core-i3 2100 might disappoint in a real-world environment with applications running in the background.