The PS Vita boasts a powerful quad-core ARM Cortex-A9 processor, 512 MB of RAM, and a unique graphics processing unit (GPU) capable of producing high-quality visuals. These specs, combined with its portability, make the PS Vita a very capable handheld console.
When the PS Vita launched in 2012, it was marketed as a "console-quality" handheld. While it successfully hosted impressive titles like Uncharted: Golden Abyss , the sheer CPU and RAM requirements for GTA IV’s physics and AI simulation likely exceeded the Vita's hardware capabilities. Community consensus suggests that while the Vita could comfortably handle the "PS2-era" trilogy ( GTA III , Vice City , San Andreas ), the HD-era mechanics of GTA IV were a bridge too far for native hardware. The Missing Link in the Vita’s Library gta iv ps vita