For $150 right now the best you can get is 750ti and that is slightly weaker than a PS4, which already is having problems reaching 1080p and PC high settings equivalent. You would have to wait for the 8 and rx 300 series for new offerings or buy used if you want to keep your standards and budget.
It's clocked nicely. Already @ 1100mhz, I would push it further.
You'd be lucky to get 100mhz out of it.
My sapphire is clocked at 1050/1250. It reaches 1175/1450. Dunno about my msi one, It's at 1050/1200 and so far I've only pushed it to 1155/1400 and that was for the latest scores I posted for firestrike. I tried pushing the memory to 1450, but it blue screened on me. 1425 caused glitches. Kinda bad since it has hynix memory, I heard that it was good. :/ I didn't try pushing the core anymore, maybe I'll see if it can reach 1175 as well.