It's average GPU Qualcomm Adreno 505, not so good for high gaming performance, but qualcomm 820 processor has better gpu.
Everything is loving too much in this mid budget and average feature phone
5.0 inch HD display
Memory card slot
4100 mah Li-Poly battery
and LTE 50 Mbps, HSPA plus, LTE CAT4 150 Mbps
I like the back camera of this handset, used it for 1 days now. No issue encounterd so far, may be come later
A excellent phone. No cons till now, but it will comes after used, few month later
Few highlight i want to share about this Xiaomi redmi 3S plus
Cool, it included Wi-Fi, GPS, Bluetooth, FM, 3G, 4G
Excellent performance due to Qualcomm Snapdragon 430
Class-leading battery life only because of 4100mAh
Good screen quality and 720 pixels by 1280 pixels screen resolution
Value for money package, just few $ to spend.
Good camera performance under normal light and indoor as well