› 8Gb (2X4Gb) Memory Ram Compatible With Lenovo Thinkcentre M81 By CMS A74

8GB Total memory using 2pc of 4GB 1600MHz Module 240pin dimm DDR3 12800. Lifetime warranty for exchange. by Computer Memory Solutions We don't use OEM or Generic modules to avoid incompatibility issues. Guaranteed to work or you get all of your money...