Powershell script to rename a CPU and (nvidia) GPU in task manager and related items.

RenameCPUGPU.ps1

$CPUName = 'Cat Processing Unit'

$GPUName = 'Gaming Pgaming Ugaming'
$NVGPUID = '2206'
# NVGPUID Looks like '2206' for a 3080, '1F36.1050.1028' for a Quadro RTX 3000

###############

function Main {
	If ((Test-Administrator) -eq $false) {
		$exe = 'powershell.exe'
		If (-not ($null -eq (Get-Command 'pwsh.exe' -ErrorAction SilentlyContinue))) {
			$exe = 'pwsh.exe'
		}

		If ($exe -eq 'powershell.exe') {
			$currentPolicy = Get-ExecutionPolicy
			$acceptablePolicies = @('Bypass', 'RemoteSigned', 'Unrestricted')

			If ($currentPolicy -eq 'RemoteSigned') {
				Unblock-File -path "$PSCommandPath"
			}

			If (-not ($currentPolicy -in $acceptablePolicies)) {
				Write-Host 'Please allow your system to execute scripts (about_Execution_Policies) or install Powershell 7'
				Start-Sleep -Seconds 10
				Exit
			}
		}

		Write-Host 'Not running as administrator, prompting for elevation...'
		Start-Process -FilePath "$exe" -ArgumentList "-NoProfile -File $PSCommandPath" -Verb RunAs
		Exit
	}

	Set-CPU-Name
	$driverTable = Get-GPU-Driver-Table
	$INF = Get-NVIDIA-INF $driverTable
	Set-NVIDIA-GPU-Name $INF
}

function Test-Administrator {
	$user = New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())
	return $user.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)
}

function Set-CPU-Name {
	$CPURegPath = 'HKLM:\HARDWARE\DESCRIPTION\System\CentralProcessor\0'
	$CPURegKey = 'ProcessorNameString'

	If (-not (Test-Path $CPURegPath)) {
		New-Item -Path $CPURegPath -Force
	}

	New-ItemProperty -Path $CPURegPath -Name $CPURegKey -Value $CPUName -PropertyType String -Force
	Write-Host 'CPU name set'
}

function Get-GPU-Driver-Table {
	$drivers = pnputil -enum-drivers -files | Select-String -Pattern '.*Class Name:.*Display' -Context 3, 0

	$linePos = 0
	$secArr = @()
	$driverTable = @{ nDriSec = @() }

	ForEach ($line in $($drivers -split '\r?\n|\r')) {
		If ($linePos % 4 -eq 2) {
			If (-not [string]::IsNullOrEmpty(($line | Select-String -Pattern '.*Provider Name:.*NVIDIA'))) {
				$driverTable.numNVDA += 1
				$driverTable.nDriSec += [int][Math]::Floor($linePos / 4)
			}
		}

		If ($linePos % 4 -eq 3) {
			$secNum = [int][Math]::Floor($linePos / 4)
			$driverTable."dri$secNum" = $secArr
			$secArr = @()
		} Else {
			$secArr += $line
		}
		$linePos++
	}

	return $driverTable
}

function Get-NVIDIA-INF {
	param(
		[Parameter(Mandatory, HelpMessage = 'The driver table generated by Get-GPU-Driver-Table.')]
		[Hashtable]$driverTable
	)

	$driverTable.selINF = $driverTable.nDriSec[0]
	If ($driverTable.numNVDA -lt 1) {
		Write-Host 'You have no NVIDIA driver installed, no NVIDIA GPU name changes were made.'
		Exit ### THERE IS AN EXIT HERE
	} ElseIf ($driverTable.numNVDA -gt 1) {
		$possibleSel = @()
		ForEach ($sel in $driverTable.nDriSec) {
			$pubName = $driverTable."dri$sel"[0] | Select-String -Pattern '\S*\.inf' | Select-Object -ExpandProperty Matches -First 1
			$origName = $driverTable."dri$sel"[1] | Select-String -Pattern '\S*\.inf' | Select-Object -ExpandProperty Matches -First 1
			Write-Host "[${sel}]: $pubName ($origName)"
			$possibleSel += $sel
		}

		do {
			try {
				$default = $driverTable.nDriSec[0]
				If (-not ([int]$tmpSel = Read-Host -Prompt 'Please enter the number corresponding to the correct INF file' -ErrorAction SilentlyContinue)) {
					$tmpSel = $default
				}

				$isNum = $true
			} catch [System.Management.Automation.PSInvalidOperationException] {
				$tmpSel = $default
				$isNum = $true
			} catch {
				$isNum = $false
			}
		} until ($isNum -and ($tmpSel -in $possibleSel))

		$driverTable.selINF = $tmpSel
	}

	$tableLoc = 'dri' + $driverTable.selINF
	$INF = $driverTable."$tableLoc"[0] | Select-String -Pattern '\S*\.inf' | Select-Object -ExpandProperty Matches -First 1
	return $INF
}

function Set-NVIDIA-GPU-Name {
	param(
		[Parameter(Mandatory, HelpMessage = 'The NVIDIA INF file name, in the format "oemXXX.inf" where XXX is a number.')]
		[string]$INF
	)

	$INFPath = "$Env:SystemRoot" + '\INF\' + "$INF"
	$INFFileContents = Get-Content -Path $INFPath -Raw

	$replaceRegex = '(?<=\r\n|\r|\n)NVIDIA_DEV\.' + "$NVGPUID" + '.*?=.*?".*?"'
	$replaceValue = 'NVIDIA_DEV.' + "$NVGPUID" + " = ""$GPUName"""

	$newContent = $INFFileContents -replace "$replaceRegex", "$replaceValue"

	$newContent | Set-Content -Path $INFPath -NoNewLine
	Write-Host 'GPU name set'
}

Main
Write-Host 'Done!'
Start-Sleep -Seconds 2