the Noise TOP called “noise1” needs it’s Pixel Format parameter on the Common page set to at least “16-bit float (RGBA)”
By default all TOPs currently have a 8bit pixel format and their values are clamped to a 0-1 value range. By using the Point Transform TOP and translating on the z axis, the values are clamped right away - setting it to 16-bit or 32-bit allows the values to go beyond that range.