Thermal Grizzly Ryzen 7000 Lapping Tool

The Ryzen 7000 Lapping Tool is designed for grinding the heat spreaders of AMD's AM5 processor series. The tolerances of the Ryzen 7000 Lapping Tool allow the heatspreader to be ground down step by step by 0.4 millimeters, up to a total height of 1.6 millimeters. When using the standard AMD mounting frame (SAM), a maximum grind of 1.0 mm is allowed until the middle steps are reached. A further 0.6 mm is only possible if the CPU is mounted with a suitable AM5 contact frame, for example (product will follow shortly). The steps of the Ryzen 7000 Lapping Tool are diamond milled to achieve high transparency. This makes it clear when grinding which levels have already been reached and which have not.

• Simplifies AM5 CPU grinding
• CNC-milled acrylic glass
• Complete set with sandpaper
• Single use

Why grinding / lapping?

When grinding the heatspreader, only the upper side of the heatspreader is usually planned, as this is usually somewhat curved due to the manufacturing process. Lapping will make the CPU cooler's bottom plate fit better, especially if the bottom plate has also been sanded. This optimized contact allows the thermal power loss of the CPU to be better dissipated.

However, the Ryzen 7000 Lapping Tool enables the heat spreader to be removed in a controlled manner well beyond the usual 0.2 millimeters. This should not only increase the contact area between the heat spreader and the CPU cooler, but also reduce the path that the waste heat is conducted through the AM5 heat spreader. In order to be able to continue using older CPU coolers for socket AM4 with socket AM5, the AM5 heat spreader had to be designed much thicker than would have been necessary. This leads, among other things, to high CPU temperatures during operation.

The US content creator and tech YouTuber "JayzTwoCents" was able to achieve up to 5 degrees Celsius lower temperatures with slightly higher boost clocks of all cores with a Ryzen 9 7950X using a 360 mm AiO by grinding the heat spreader. In combination with the Kryonaut Extreme thermal paste, it was even possible to achieve 10 degrees Celsius lower temperatures (compared to commercially available thermal paste). Even with a moderate overclocking of all cores of the Ryzen 9 7950X to 5.4 GHz, the test system remained 4 degrees Celsius below the temperature limit of 95 °C.

It should be noted that grinding the CPU will void the warranty. For the largest possible contact area between the IHS and the base plate of the CPU cooler, the latter should also be sanded.

Technical specifications

• Length: 60mm
• Width: 60mm
• Height: 9.3mm
• Material: acrylic glass
• Colour: Clear

scope of delivery

• 1x Ryzen 7000 lapping tool
• 4x screw
• 4x washer
• 1x L-key
• 1x sandpaper 400 grit
• 1x sandpaper 1,200 grit
• 1x sandpaper 2,500 grit