Why is the graphics memory bus width shows 64bit instead of 128bit?

[Starjack34]

Hi, new here to this community. I have a almost 10 months old Lenovo laptop with a Core i3-1215U 6-core processor in it . I've been noticing for the past few months that Hwinfo64 and GPU-Z keeps showing the bus width for the graphics memory for the integrated UHD Graphics Xe 64EUs GPU as 64bit instead of 128bit, when my laptop has 12GB of RAM that is in dual-channel mode. I posted a screenshot below to prove my point. If there's a solution to this, please post it. Thanks.

[n_scott_pearson]

Intel cannot be responsible for the data generated by third-party apps like HWiNFO64 and GPU-Z. Contact their developers regarding these bugs.

...S

[Starjack34]

Ok. I wonder if it had to do with the fact that my device come with soldered RAM that these third party apps or the OS doesn't recognize it as my system's main memory, or part of it at least.