over the years ive used quite a few pretty under powered machines, some of which ive tried to play beam on. i remember running the game on a gtx9800 a few years ago at pretty crappy framerates, ive also used some twin core integrated graphics laptops with chips like the i5-4210m and the i5-6200u at pretty OK framerates. when the alpha first game out in 2013 i was using an Athlon 64 x2 (probably a 3800+) with 4GB of DDR2 and a radeon 6670 1GB. i remember back then getting pretty good frames on gridmap but everywhere else would be sluggish. these probably aren't anywhere near the slowest machines anyone has ran Beam on so id like to hear what kind of crazy hardware you've tried! thanks!