Let us remind you that Snapdragon 650 was known as 618 and Snapdragon 652 was known as 620, Qualcomm has changed the name later considering its great performance. Snapdragon 650 and 652 features almost the same specs, but there is only one difference; 650 features a hexa-core processor and 652 features octa-core. So Snapdragon 652 would score better in terms of multi-core performance, but Single-core would remain the same.
Snapdragon 650 vs Snapdragon 808 vs Mediatek Helio X10 Specs
Here is a quick look on CPU, GPU and Modem
The best part of Snapdragon 808 is its LTE modem with Cat 9 that beats rest 2 in terms of downloading speed, but Snapdragon 650 can still upload data faster than rest 2 CPUs.
Antutu Benchmark comparison
According to Antutu Report, Among these three processor, Snapdragon 650 is the best in terms of performance. Helio X10 average Antutu score is 48354, Snapdragon 808 score is 70087 and Snapdragon 650 rocks with 78679.
You must be thinking that among Adreno 510, Adreno 418 or Power VR G6200 which one is the best? Well, Adreno 510 leads in GPU performance as well. Antutu report shows that Helio X10 average GPU score is 11890, Snapdragon 808 Graphic Score is 17469, and Snapdragon 650 score is 19464. PowerVR G6200 quite behind compared to Adreno 510.
This comparison also defines the difference between Redmi Note 3 Pro and Redmi Note 3. Pro version features Snapdragon 650 CPU and the non-pro version was launched with Helio X10 Chip. Redmi Note 3 Pro 16GB model costs 100 Chinese Yuan (around $15) more than Redmi Note 3. Little price difference will give you much better CPU, GPU and LTE performance.