I’ve done a little more reading for the Raspberry Pi vs. Librem 5 comparison that I’ve been constantly making over the past several months. Quick summary: identical CPU architecture and speed, Librem 5 has 3x RAM size and ~3x 3D acceleration capabilities; roughly equivalent to a Qualcomm Snapdragon 801 (though with a slightly faster CPU).
CPU: both have 4x Cortex-A53 (https://en.wikipedia.org/wiki/Raspberry_Pi#Specifications, https://puri.sm/shop/librem-5/ and https://en.wikipedia.org/wiki/Freescale_i.MX#i.MX_8_series). RPi runs at 1.4 GHz, Librem 5 runs at 1.5 GHz - not really a difference there.
RAM: RPi has 1 GB of DDR2 running at 900 MHz, Librem 5 has 3 GB of DDR3 running at (unknown) MHz.
GPU: RPi has a single Broadcom Videocore IV with 1 gigapixel/second fill rate (https://github.com/hermanhermitage/videocoreiv/wiki/VideoCore-IV---BCM2835-Overview), Librem 5 has 2x 1x Vivante GC7000Lite (https://en.wikipedia.org/wiki/Freescale_i.MX#i.MX_8_series) which fills at 3.2 gigapixels/second (https://en.wikipedia.org/wiki/Vivante).
To compare with Qualcomm chipsets (which seemingly every other smartphone seems to have), we’d sit roughly in between the Snapdragon 801 and the 810 (https://en.wikipedia.org/wiki/Snapdragon_810#Snapdragon_808_and_810_(2015) and https://en.wikipedia.org/wiki/Adreno), with the CPU comparable to the 810 and the GPU comparable to the older 801. Hopefully we won’t get the overheating issues as well…