EPYC 7742

The EPYC 7742 is a 64-core / 128-thread processor based on the Zen 2 (2017−2020) architecture, manufactured on a 7 nm, 14 nm process node. It reaches a maximum boost clock of 3.4 GHz from a base frequency of 2.25 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. With a massive 256 MB (total) L3 cache (3D V-Cache technology), this processor has a significant gaming advantage — the large cache drastically reduces memory latency in game engines., plus 512K (per core) of L2 cache and 96K (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 69,448, placing it in the Enthusiast performance tier as a Legacy generation product.

The EPYC 7742 fits into the TR4 socket and supports PCIe 4.0 with 128 total PCIe lanes for expansion cards and storage. It supports DDR4 Eight-channel memory at speeds up to 3200 (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 4096 across 8 channels (dual-channel doubles bandwidth). It supports ECC memory, providing error-correcting capabilities — essential for mission-critical workloads and servers. Integrated graphics: None — allows display output without a dedicated GPU, useful for troubleshooting and light tasks.

Virtualization: VT-x, VT-d — enables running virtual machines efficiently (important for development and server workloads). Its primary market competitor is the Xeon Platinum 8280.

The EPYC 7742 has a rated TDP (Thermal Design Power) of 225 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed. No stock cooler is included — you will need to purchase an aftermarket cooler separately. Recommended cooling: Premium Server Cooler.

At an average price of $800 (MSRP: $6950), the EPYC 7742 delivers 87 PassMark points per dollar. Performance ranking position: #89 out of all indexed processors.