So, it looks like you do produce a few more points per day total with the GPU folding on. Based on the first data point, which seems like the most reliable of them since the others are skewed a bit, you're looking at roughly 6800 ppd from folding with both. That's getting within spitting distance of your 1055, really.
So, yeah, they're worth folding on, certainly, but I don't think I'd turn off GPU folding, unless the system overheats. Even with AMD coolers, I doubt that you could run both clients 24/7 on stock cooling. That's more of an aftermarket-cooling arena.
All in all, though, certainly more attractive than folding on Intel's GPU...lol.
There used to be a workaround to the Radeon CPU utilization problem while folding. If it still works on the newer Radeon hardware, it could bump up production another 1200 - 1600 ppd! But I'm just about done folding on this machine anyway, by months end for sure, possibly sooner. As I start to get the final components in & system finished before Mothers Day, the plan is to complete testing with the finished system, ensuring it will work how mom will be using it, and no, folding will not be included when she gets it.
RE: Stock cooler
Can't even browse the internet on stock cooling... well maybe, but the stock cooler is truly pathetic.
It looks like the coolers they included with single-core Sempron CPU's. In under 15 seconds of starting F@H temps skyrocketed up past 60C with the stock cooler. Danged computer started beeping at me, I checked temps & in 3 seconds, temps went from 66C to 68C, & the GPU client wasn't even running yet at that point... I immediately shut-down & began looking for a different heatsink to use. Luckily I still had the retail cooler from my Athlon X2 4400+ to swap out, it at least has a larger & more powerful fan & 4 heat pipes. Keeps the CPU down in the low 50's while SMP & GPU folding. This is one case where I would suggest to everyone to buy OEM version of the CPU (if there was one) & get a cooler designed for multi-core processors to go with it.