Intel Xeon 658X Review: 24 Cores, Massive Memory Bandwidth Tested by Marco Chiappetta — Thursday, June 11, 2026, 03:15 PM EDT Intel Xeon 658X: MSRP $1,699 The Intel Xeon 658X brings the Granite Rapids architecture to professional workstations. …
… This slide compare Clearwater Forest to the first-gen E-core only Xeons, Sierra Forest. Besides doubling the CPU core count, these chips radically increase memory bandwidth and last-level cache, which should help tremendously with memory-bound workloads. …
… Integrating new memory technologies requires all new memory controller designs, and a modern memory controller IP block is as complex as a whole CPU was just a decade ago. …
… The setup yields 1.2TB/s of peak memory bandwidth, allowing Vera to maintain a 90% sustained memory bandwidth utilization under the grueling STREAM TRIAD test—the highest percentage ever tested by Phoronix . …