Phenom II X3 B77 vs Core i3-4100E

The Phenom II X3 B77 packs 3 cores / 3 threads, while the Core i3-4100E offers 2 cores / 4 threads — the Phenom II X3 B77 has 1 more core. Boost clocks reach 3.2 GHz on the Phenom II X3 B77 versus 2.4 GHz on the Core i3-4100E — a 28.6% clock advantage for the Phenom II X3 B77 (base: 3.2 GHz vs 2.4 GHz). The Phenom II X3 B77 uses the Heka (2009−2010) architecture (45 nm), while the Core i3-4100E uses Haswell (2013−2015) (22 nm). In PassMark, the Phenom II X3 B77 scores 1,844 against the Core i3-4100E's 1,848 — a 0.2% lead for the Core i3-4100E. L3 cache: 6 MB (total) on the Phenom II X3 B77 vs 3 MB (total) on the Core i3-4100E.

The Phenom II X3 B77 uses the AM3 socket (PCIe 2.0), while the Core i3-4100E uses BGA1364 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR3-1333 memory speed. The Phenom II X3 B77 supports up to 32 GB of RAM compared to 16 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Phenom II X3 B77) vs 16 (Core i3-4100E) — the Core i3-4100E offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AM3 (Phenom II X3 B77) and QM87,HM86,HM87 (Core i3-4100E).

Virtualization: not specified (Phenom II X3 B77) / VT-x, VT-d, EPT (Core i3-4100E). The Core i3-4100E includes integrated graphics (HD Graphics 4600), while the Phenom II X3 B77 requires a dedicated GPU. Primary use case: Core i3-4100E targets Embedded. Direct competitor: Core i3-4100E rivals Embedded R-Series.

The Phenom II X3 B77 launched at $281 MSRP, while the Core i3-4100E debuted at $225. At current prices ($35 vs $30), the Core i3-4100E is $5 cheaper. In terms of value (PassMark points per dollar), the Phenom II X3 B77 delivers 52.7 pts/$ vs 61.6 pts/$ for the Core i3-4100E — making the Core i3-4100E the 15.6% better value option.