Replacement PSU Razer Core X
Hi, @BarbarySheep, not sure what exactly your problem is but you can refer to below 2 photos.
The SF600 just sits inside using some blu-tack.
I went ahead and did this upgrade. I noticed that the PSU itself can get pretty warm, perhaps 30c? I'd assume it could get hotter than this; doesn't blu-tack getting hot make it less sticky? I'm thinking of 3D printing out a cover or something to hold it down (that can be screwed in the old PSU holder holes)...
Just putting it out there: from first glance it looks like the EVGA SuperNOVA 550GM would also be a suitable replacement (socket, switch and SFX with fan on the mesh side); it's cheaper than the SF600. It's also fanless under low loads ( ). Of course it's 550W but that shouldn't be noticeable. Fans apparently don't turn on unless >=30% load so you probably will only hear it on full GPU loads on pretty high end cards (in theory a full load average 2070, it should be fine)... Not trying to sell snake oil so YMMV.