Based on the search term, you are likely looking for a comparison or a technical paper analyzing the performance differences between the ARM Mali-450 MP series (specifically the MP2 dual-core variant) and the Mali-31x series (specifically the Mali-31 or Mali-450 MP2 compared to the Mali-G31 or older Utgard architectures).
However, the term "malig31" suggests you might be referring to the Mali-G31 MP2, which is a very common modern comparison against the older Mali-450 MP2.
Here is a technical breakdown and "mini-paper" regarding the comparison between these two GPU architectures, focusing on the Mali-450 MP2 vs the Mali-G31 MP2 (the most likely intended comparison). malig31 mp2 vs mali450 hot
If you are shopping for a cheap phone and your priority is "I don't want a hot phone," here is the golden rule:
Avoid any SoC containing Mali-450. This includes: Based on the search term, you are likely
Seek out SoCs with Mali-G31 MP2. This includes:
Before we declare a winner, you must understand why a GPU gets hot. Heat in a chip is a byproduct of electrical resistance (leakage current) and switching frequency (clock speed). Generally: More transistors switching faster = More heat. designed for entry-level devices.
Released circa 2018, the Mali-G31 is the smallest implementation of the Bifrost architecture, designed for entry-level devices.