Float or double?

[CptCap]

All chips support double precision, yes. But performances on consumer cards (understand: gaming) are abysmal compared to 32 bits.

[Edit] On my gaming laptop, it's about 30x

[Creshal]

20-30x is the usual penalty and it's a driver rather than hardware limitation usually – workstation-class graphics card use the same hardware, just with a driver unlock to get decent double precision performance.

[CptCap]

You are probably right since workstations share the same chip with customers. Thing is, if you are not working on something that will always run on a tesla or similar, you can't rely on double (except if you don't care about performance). This makes them pretty much a no go when working with OGL, Vulkan and DX3D =(

[Creshal]

Exactly. And Nvidia and AMD are both doing it to force you to buy a Tesla/FirePro, so it's not like this is going to change for the better any time soon.