I have a NVidia GT 740. Its performance is below that of the "average GPU." A 1 minute run on hdfr gave me a score of 8.90. It has 384 shaders running at 993 MHz which gives 762 SP GFLOPS. It easily makes the deadlines.
I also have a GT 710 (LP) which has 192 Shaders @ 954 which produces 366 SP GFLOPS. I'll need to benchmark it but that's probably a FAHBench score of 4.27.
Compare that to the Intel 6000 series which have 48 execution units @ 1000Ghz. I'd expect them to be about 25% as fast. This puts them somewhat above many CPUs but still considerably below most supported GPUs. I can't find anything except the Iris Pro Graphics 580 with more than 48 EUs. (It has 72). Do you have a source that rates the Intel Graphics in terms of Single Precision GFLOPS?
Question: Do you know anybody who considers themselves a gamer would would accept the frame rates that can be produced by an iGPU? Everybody I know has a NV GTX1080 (2560 shaders @ 1607) or a TItan (3584 shaders @1417) which produce something like 1000 GFLOPS.