I've tried both on Linux:  SAv5 and opti-shit-miner.
5x 470 4Gb bios mod give me:

SAv5 about 390 S/s (78-82 per GPU)
"opti-shit-miner":  about 450 S/s (90-95 per GPU) but it hangs every 5-10 min, so I left SAv5 for this rig.

So there are no any 120-150 sols/s. It's fake.

Other my rigs (7950, 280x, 270 etc.) work fine with Claymore's miner v4 on Windows.