Default O/C GPU?

Just kind of curious if it's even possible to O/C the Nexus 5 GPU. My previous device was a Note 2 and that could be O/C'd twice its stock XD.

Sent from my Nexus 5 using XDA Premium 4 mobile app
SGS 5--AT&T--STOCK NO MORE! NCE EXTREME DEBLOAT!
NEXUS 5--AT&T--MULTI-ROM MYSTERY MEAT
 
Note II--AT&T--Note III port
SGS 2 Skyrocket--AT&T--Some AOSP project long forgotten
Atrix 4G--AT&T--The original fingerprint scanner
SGS Captivate--AT&T--Just root and heavily modded
iPhone 3G--AT&T--Jailbroken, hoping to be an Android
Nokia E61--AT&T--Burned, battered and bruised...literally
Nokia 6600--AT&T--SNAKE!!1!