Correct, the 300 series cards have their own hardware IDs. Though I don't know if Steam is IDing cards by hardware ID, or just reading what Windows and the device manager report.The hardware ID of the rebrands changed, so I'd like to assume that Steam would not lump them together. If I remember (and if I'm granted time from the wife after kiddo is in bed ) I'll poke around in the Steam hardware survey site tonight. Are other, prior rebrands from AMD and NV lumped in the same way? Can't think of one just at this moment, but I know both vendors have examples in the recent past.