The Max wifi speed supported will not depend only on the Processor specifications.
Unfortunately, this product is discontinued, Intel Customer Service no longer supports inquiries for it, but perhaps fellow community members have the knowledge to jump in and help. You may also find the Discontinued Products website (https://www.intel.com/content/www/us/en/support/discontinued-products.html) helpful to address your request.
Please keep in mind that this thread will no longer be monitored by Intel. Thank you for your understanding.
Intel Customer Support Technician