Hello. So... I have been following the site for a couple of months now, and I`m really impressed by the amount of detail put into the table and guides. I can say that you have done a great job in creating this guide for Warframe, since it`s the game I actually play. Thank you for this, since I'm now actually pressed on to get a build that can get Warframe to run at constant framerate, 60 being the bare minimum, while using only certain graphic enhancements. I`m still aiming at 1080p high, though.

I don`t know if this guide will get the attention of a lot of people, but I would like to see what kind of PCs people have and the performance issues they have since release of Fortuna (second open-world location released back in November... I think) and, as of today, 5th of April, remastered version of Plains of Eidolon (first open-world location).

The point of this introduction is that I have read comments on Steam community Warframe page, in-game chat, forum and they combine into one statement: this and that (i7s as mentioned here) CPU CAN`T run these locations AT ALL -> At low fps, just unplayable. I can play those, with drops (yes, quite big drops since the remaster) in fps, which seem to manifest in certain areas of the maps instead on the whole.
This is my PC configuration:

MSI G41M-P26 (MS-7592)
Intel Pentium E2200 @ 2.20GHz
4,00GB Dual-Channel DDR3 @ 399MHz
Samsung SyncMaster P2250 (1920x1080@59Hz)
1024MB ATI Radeon HD 4600 Series (Gigabyte)
Windows 7 64-bit

Enclosed areas: 1080p from 20-30 fps, 768p gets to steady 30 fps.
Open-world: 1080p was actually quite good and steady, until Fortuna got some lighting changes (dropped to below 10 fps, which was really unbearable, 768p fixed that, same applies to remastered PoE).
Every graphic option is set to Low, Disabled or Off. And the game still looks amazing.

What is making this configuration run this "well" for this game?

While I don`t have a lot of faith that the performance issues will go away any time soon or at all (cough...better PC... cough), I`m always impressed at how the game looks and works even for low end PCs.

It's worth mentioning that these CPUs from minimum requirements cannot run open-world locations at all. Hell, you cannot even run them with much more powerful i7-4510U or AMD Athlon II X4 645 (though they are still crappy CPUs).

Very true for most set-ups. That's one of the reasons that our lowest-tier example build in the article (for 1080p with all low settings) still features an R5 2400G, which is more than twice as powerful as the processors in the official minimum specs.