When looking for a 64GB memory upgrade to my Razer Blade 15” Advanced (2021),
I was naïvely assuming that _nominal speeds_ (i.e. those on the box or in the product
description) were guaranteed defaults that may be further tuned with XMP to find the
optimal timings automagically.
Little did I know that
When I reached out to support with my experience of these Ballistix running at 2666MHz
instead of the advertised 3200MHz, they confirmed the first point and hinted at the second.

This is the 64GB kit I used (and removed for return):

I re-tested with the original modules:

And, those do run at 3200MHz (albeit, only 32GB):
If anyone has recommendations for a 64GB kit **confirmed** running at 3200MHz
in a Blade 15 Advanced 2021 model, I'd love to hear!!
UPDATE
I can **
confirm** that a Kingston Fury 64GB kit runs at 3200MHz in my Blade 15 Advanced 2021 model.