HP ProBook 6450b 14.0" Silver Used Laptop - Intel Core i5 540M 1st Gen 2.53 GHz 6GB SODIMM DDR3 SATA 2.5" 120GB HDD DVD-RW Windows 10 Pro 64-Bit - Walmart.com
Intel Core i5-540M CPU Laptop Processor 3M Cache 2.53 GHz to 3.066 GHz i5 540M PGA988 Processor Compatible with HM57 HM55 QM57 - AliExpress
Intel BX80617I5540M - 2.53Ghz 2.5GT/s 3MB PGA988 Intel Core i5-540M Dual Core CPU Processor - CPU Medics
I5-540M Intel Core i5 Mobile 2.53 GHz Processor Unboxed OEM
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Intel Core i5-540M Mobile processor - CP80617004116AD / BX80617I5540M
Intel Core i5 i5-540M 2.53GHz 2.5 GT/s Socket G1 SLBTV at TR Reuse Group