Version:
SPD-Z 1.7.17. Download: https://siliconindexlabs.com/download/spd-z.
A newer release is valid from the day it is listed in the changelog below. Listed versions stay valid unless the changelog says otherwise. No other version or build is valid.
Memory Score only. The AI Memory Score is not valid.
Run the full benchmark from the Benchmark page of the SPD-Z window.
Systems with more than 64 logical processors or more than one CPU socket are not valid until listed here.
Windows Limitations:
INTEL CPU:
Skylake or newer: No Windows OS limitation.
Older than Skylake: The platform clock (HPET) must be enabled if BCLK is changed after boot.
AMD CPU:
The platform clock (HPET) must be enabled if BCLK is changed after boot.
Windows 10 or Windows 11 (x64). No virtual machines, Wine, Proton, or other compatibility layers. No Linux.
Disallowed Tweaks:
Anything that changes how time is measured, by Windows or by SPD-Z. Enabling the platform clock (HPET) is allowed.
Affinity masks, process tools, or anything else outside the BIOS that changes which processors or threads SPD-Z uses.
Changing memory, CPU, or clock settings while the benchmark is running.
RAM caching software.
Verification required:
Verification link and/or screenshot (see below)
Save run file: Save the run file (Save run in SPD-Z) for every result you submit.
Verification screenshot contains:
No screenshot required if the verification link shows the RUNNING TIMINGS, section and the full thread count of the CPU.
In every other case:
Full desktop screenshot with the SPD-Z result window
CPUZ tab for CPU and memory (V3.01 or newer)
Windows taskbar must be visible
No screenshot clipping or cropping
