Well, I recently decided to upgrade my Macbook to 4GB of RAM. I can get by with just 2GB, but I had an excuse to spend some money before March 31. Anyway, I thought I did the right thing. I bought some Hynix RAM. I keep reading forum posts about Apple using Hynix in most of their machines (and indeed the existing RAM in my Macbook was Hynix brand). I also knew that the Penryn Macbook I have takes DDR2-667 SODIMMs. But I went and searched online and was going to buy some Hynix 2GB DDR2-667 SODIMMs from an online retailer, when I noticed that they also had “Hynix 2GB DDR2-800 SODIMMs ‘for Mac'”. Those words ‘for Mac’ are compelling when you know from past experience that laptops can be very fickle when it comes to RAM.<\/p>\n
So I bought the Hynix DDR2-800 memory. I put it in and my poor Macbook would not boot at all. I put the old 1GB DDR2-667 SODIMMs back in and it worked again. Then I tried one of the old 1GB DDR2-667 SODIMMs and one of the new 2GB DDR2-800 modules and it booted up and worked fine. I also tried the other 2GB DDR2-800 modul with one of the old 1GB DDR2-667 modules and it also worked. In both cases the ‘About this Mac’ screen also said it had 3GB of RAM.<\/p>\n
So I trawled google and the general view is that Penryn Macbooks cannot use two DDR2-800 SODIMMs. They can use one DDR2-667 and one DDR2-800 SODIMM, but somehow the chipset does not want to play if two DDR2-800’s are inserted. Grrrrr.<\/p>\n
So I’ve returned the memory, and I bought some Kingston memory (the 4GB kit ; KTA-MB667K2\/4G )\u00a0 instead which even the Kingston site says is the right memory for my Macbook. And suffice to say the new memory works perfectly.<\/p>\n","protected":false},"excerpt":{"rendered":"
Well, I recently decided to upgrade my Macbook to 4GB of RAM. I can get by with just 2GB, but I had an excuse to spend some money before March 31. Anyway, I thought I did the right thing. I bought some Hynix RAM. I keep reading forum posts about Apple using Hynix in most […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-226","post","type-post","status-publish","format-standard","hentry","category-mac"],"_links":{"self":[{"href":"https:\/\/www.kernelcrash.com\/blog\/wp-json\/wp\/v2\/posts\/226","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kernelcrash.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kernelcrash.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kernelcrash.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kernelcrash.com\/blog\/wp-json\/wp\/v2\/comments?post=226"}],"version-history":[{"count":6,"href":"https:\/\/www.kernelcrash.com\/blog\/wp-json\/wp\/v2\/posts\/226\/revisions"}],"predecessor-version":[{"id":232,"href":"https:\/\/www.kernelcrash.com\/blog\/wp-json\/wp\/v2\/posts\/226\/revisions\/232"}],"wp:attachment":[{"href":"https:\/\/www.kernelcrash.com\/blog\/wp-json\/wp\/v2\/media?parent=226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kernelcrash.com\/blog\/wp-json\/wp\/v2\/categories?post=226"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kernelcrash.com\/blog\/wp-json\/wp\/v2\/tags?post=226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}