Powershell / Where arrays

Hi everybody!

I'm trying to get a script to get the version (32 or 64 bits) of different INF drivers and then install the one corresponding to the version of the system.

# GET THE PATH OF THE INF FILES IN A FOLDER
$INF_PATH = gci $PSScriptRoot -Recurse -Filter "*.inf" | ? {$_.Attributes -ne "Directory"} | % {$_.FullName}

# GET THE OS VERSION IN THE INF (64 or 86)
$INF_OS_VERSION = ([regex]::matches((Get-Content $INF_PATH | Select-String -Pattern '^"Models, NT' | % {$_.Line.split(",")[1]}) , '\d{2}') | % {$_.value})

# GET THE OS VERSION OF THE SYSTEM (64 or 86)
$SYS_OS_VERSION = ((Get-WmiObject Win32_OperatingSystem).OSArchitecture).Substring(0,2)

$RESULT =  $INF_PATH | ? {($INF_OS_VERSION -eq $SYS_OS_VERSION)}

$RESULT

In this case I've got two INF, one 64 bits, one 32 bits, but instead of returning only one path of the INF (in 64 bits in my case), it returns both!

Can you see what I did wrong?

Thank you in advance,