Aida64 is trial software.. easier to just use the best system info/monitor software out there that is also freeware HWiNFO - Download
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790? 108.1926.769.0 is the latest update for Surface Pro 4.

If anyone is having trouble running the Powershell script here's one more alternative (requires .NET 4.5).
If ran as administrator it also allows you to disable the windows patches.

Utility for...

Here's a small recap with my own additions from Google's Project Zero site:Project Zero

Spectre / Variant 1: bounds check bypass (CVE-2017-5753) Win Update (Program/OS/System No...

There's an unofficially released microcode update 23 20/11/2017 for the Haswell line that has a partial fix for spectre.

Improved overclocking for Haswell with updated microcode (+ update CPU...