Roch CPU

A Windows CPU and DDR5 memory tuning tool for supported Intel LGA1700 and AMD Ryzen systems. Adjust clocks, power limits, voltages and Curve Optimizer in a compact light/dark interface. Available controls depend on your hardware and BIOS.

Install

1. Download the package from Releases.
2. Extract the entire folder—keep the bundled driver and support files beside Roch CPU.exe.
3. Run Roch CPU.exe as administrator. Current-source framework-dependent builds need the .NET 10 Desktop Runtime (x64); self-contained builds do not. Older releases targeting .NET 8 still need the .NET 8 runtime.

Windows 10/11 x64 is required. If Windows blocks a driver, some controls will be unavailable.

Features

• Intel tuning: supported core, E-core and ring ratios, voltage offsets/overrides, and PL1/PL2 power limits. BIOS locks and CPU/chipset restrictions still apply.
• AMD Ryzen tuning: PPT, TDC, EDC, thermal limit, PBO scalar and supported FMax controls through the SMU.
• Per-core Curve Optimizer: edit individual AMD core offsets, refresh hardware readings and apply changes from a dedicated window.
• DDR5 memory voltages: per-DIMM VDD, VDDQ and VPP controls where the PMIC permits writes, with calibration and read-back checks.
• Board-specific controls: CPU Core override, base clock and CPU VDD2 on supported MSI Intel 600/700-series boards. Core override updates both the Renesas regulator and Intel OC mailbox, with read-back and rail verification. AMD BCLK writing is not enabled on the tested B850MPOWER.
• Light and dark modes: grouped clock, power, boost and memory sections, editable values and a log explaining rejected or unavailable settings.
• Social links: YouTube | X | Discord in the bottom-left footer, matching Roch Viewer.
• Hardware-read header: CPU, core/thread topology, microcode, motherboard and BIOS values are labeled consistently above the controls.
• Intel voltage read-back: programmed Core, E-core L2, Ring, SA and GT targets are shown when firmware supplies them. On supported MSI boards, Core displays the regulator target rather than a potentially stale mailbox-only value; an adaptive Ring with no encoded target displays the real shared IA/core-rail voltage instead of Auto.
• Apply and Reset: Apply writes your edits; Reset restores the tool's startup baseline where supported.

Controls vary by processor, motherboard, BIOS and driver access. Optional PawnIO enables AMD SMU power-table read-back for PPT/TDC/EDC; Roch CPU does not install it automatically. See the hardware reference for platform details.

Screenshots

Left: Roch CPU 1.0.3 on an Intel Core i5-14600KF / Z790MPOWER, including the board-backed Core override and numeric adaptive Ring voltage. Right: the latest real AMD-hardware capture, Roch CPU 1.0.2 on an AMD Ryzen 7 9850X3D. Available rows follow the detected hardware. Displayed settings are examples, not tuning recommendations.

Build the latest source

Install the .NET 10 SDK, then run:

build.cmd --self-contained

Open dist\Roch CPU.exe. The current version is 1.0.3.

Overclocking can cause crashes, data loss or hardware damage. Change one setting at a time and test stability. Read-back checks do not prove a setting is stable.

Credits

• Ivan Rusanov — ZenStates-Core, ZenStates and SMUDebugTool: references for AMD SMU messages, mailbox addresses and Curve Optimizer core mapping.
• OpenLibSys / Noriyuki Miyazaki: the bundled WinRing0 low-level access driver.
• LibreHardwareMonitor: Super I/O register/access references and the source package for the bundled WinRing0 binary.
• namazso — PawnIO and PawnIO.Modules: optional driver access and the bundled signed RyzenSMU module for AMD power-table reads.
• ryzen_smu: AMD SMN access reference.

Created by Roch Studio / @MateoPCTech. See third-party notices for attribution, component licenses and implementation details.

YouTube | X | Discord

Hardware details · BCLK investigation · License