On raw compute throughput, the 5705G holds a clear lead: its 8 cores and 16 threads running at a 3.8 GHz base and 4.6 GHz turbo outpace the 5500X3D's 6 cores / 12 threads at 3.0 GHz base and 4.0 GHz turbo across the board. In multi-threaded workloads — video encoding, compilation, heavily parallelized applications — more cores at higher clocks translate directly to faster completion times. The 5705G also ships with an unlocked multiplier, giving enthusiasts the ability to push clocks further, a capability the 5500X3D entirely lacks.
Where the story inverts dramatically is the L3 cache. The 5500X3D carries a massive 96 MB of L3 cache — 16 MB per core — versus the 5705G's comparatively modest 16 MB total (2 MB/core). This is the defining characteristic of AMD's 3D V-Cache technology: by keeping far more data resident on-die, latency-sensitive workloads such as gaming, simulation, and certain database operations can avoid slower main memory fetches. In gaming specifically, this cache advantage has been shown to close — or even reverse — clock-speed deficits against chips with higher base frequencies.
The verdict depends entirely on use case. For productivity and multi-threaded work, the 5705G's core count, clock speed, and overclocking headroom give it the edge. For cache-sensitive tasks, particularly gaming, the 5500X3D's 96 MB L3 is a decisive structural advantage that raw frequency cannot easily compensate for.