I did my first grow earlier this year with the TS1000. I did 2 Autos in a 32" x 32" tent. I only grew 2 plants since it was my first grow and I wanted to make sure I didn't do too many while I was learning soooo much.
But, my numbers were:
75g dry between the two plants and at 150W from the TS1000, I got about 1/2 gpw. However, had I done 4 plants, would the additional 2 plants get the same growth as with just 2? Maybe? It's reasonable to believe I could push 1gpw I suppose. We shall see as I'm doing 3 now and plan to go to 4 on the next grow. 4 will fit for sure. But all 4 will be under the reflector lip on the TS1000.
I'm not really growing for efficiency, but it's interesting to see what others are getting. I work in the lighting industry, specifically in downlight product development, so I was debating grabbing a few scrapped prototype heat sinks and COBs and trying them out too!