@zipit said in GeMemGetFreePhysicalMemoryEstimate()?:

To convert the value to a reasonable order of magnitude, you have to do the math on your own, there always two ways. Interpreting byte measurements as powers of 2 or as powers of 10 (most modern hardware does the latter).

Those both were my initial thoughts, but the machine I'm using has 4GB total of memory, and there is no way that 3.78 of it is free. That's why I had thought there might've been something more at play here.