So i opened my old acer laptop to clean it, to find that the cpu is upgradable, its an intel t4500 2.3ghz, the best upgrade with the same TDP and socket is
Used Intel Pentium Dual-Core T4500 2.3GHz Socket P 800MHz Laptop CPU SLGZC - Walmart.com
Intel Pentium T4500) Intel Pentium Dual-Core Mobile SOCKET P AW80577GG0521M | eBay
Intel Pentium T4500 CPU Processor Dual-Core 2.3GHz 1MB 800MHz Socket P SLGZC | eBay