We found the Missing Performance: Zen 5 Tested with SMT Disabled

Name: We found the Missing Performance: Zen 5 Tested with SMT Disabled
Brand: AMD

on Aug 10th, 2024,

in Processors.

Manufacturer: AMD

Test Setup

For the SMT enabled vs SMT disabled tests, all processors are running at their stock configuration
"SMT disabled" is "SMT Control" set to "Disable" in the BIOS, everything else is identical
Results for an additional test run "PBO Max x10 +200 MHz / CO -20" are included as "performance after manual tweaking." The settings are PBO power limits set very high, PBO Scalar set to x10, PBO Frequency override to +200 MHz and Curve Optimizer to -20 on all cores.

Test System "Zen 4 & Zen 5"
Processor:	All AMD Ryzen 9000, 8000 & Ryzen 7000 processors
Motherboard:	ASUS X670E Crosshair Hero BIOS 2007 Ryzen 9000: BIOS 2201
Memory:	2x 16 GB DDR5-6000 36-36-36-76 Infinity Fabric @ 2000 MHz
Graphics:	PNY GeForce RTX 4090 XLR8
Storage:	2 TB M.2 NVMe SSD
Air Cooling:	Noctua NH-D15
Water Cooling:	Arctic Liquid Freezer II 420 mm AIO
Thermal Paste:	Arctic MX-6
Power Supply:	Thermaltake Toughpower GF3 1200 W ATX 3.0 / 16-pin 12VHPWR
Software:	Windows 11 Professional 64-bit 22H2 VBS enabled (Windows 11 default)
Drivers:	NVIDIA GeForce 555.85 WHQL Ryzen Chipset Drivers 6.05.28.016 Ryzen 9000: 6.06.28.910