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Apple Computing Products:
macOS - Notebook Hardware
RAM question (don't know what to do : did my research)
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<blockquote data-quote="Buc021" data-source="post: 1573106" data-attributes="member: 273419"><p>Just had the Kingston DDR3 (PC3-12800) 1600mhz 8G module (product number: kvr16s11 ) installed in slot 0 (and the remaining 2GB of stock RAM remained in slot 1) now totalling 10GB of RAM.</p><p></p><p>I opened Logic Pro X with 30 audio tracks (x 3 plugins per audio track) and WOW, it just did not overload (as it would have done with 2x 2GB of stock RAM). iPhoto opened in 2,5 seconds (with 2x 2GB it was more like 20+ seconds). </p><p></p><p> I am very very pleased with the result. Perhaps in the future I will take out the other 2GB stock RAM and add another 8 GB of RAM.</p><p></p><p>PS: for those interested, the DDR3 memory fact sheet for the Macbook Pro mid 2012 is based on part number HMT325S6CFR8C made by SK Hynix from China.</p><p></p><p><a href="https://www.skhynix.com/inc/pdfDownload.jsp?path=/datasheet/pdf/module/ds_2Gb_DDR3(C-ver)based_SODIMMs(Rev.1.0).pdf" target="_blank">https://www.skhynix.com/inc/pdfDownload.jsp?path=/datasheet/pdf/module/ds_2Gb_DDR3(C-ver)based_SODIMMs(Rev.1.0).pdf</a></p><p></p><p>The supply voltage for this RAM is:</p><p></p><p>VDD=1.5V +/- 0.075V</p><p>VDDQ=1.5V +/- 0.075V</p><p></p><p>We can therefore safely assume that in this case Apple's DDR Ram in the Macbook Pro (mid 2012) is 1,5 V, <strong>not</strong> 1,35 V ! (as there were a number of discussions on other forums mentioning the fact that 3rd party RAM with 1,5 V could create issues as many assumed the RAM voltage was 1,35 in the Macbook Pro 2012)</p></blockquote><p></p>
[QUOTE="Buc021, post: 1573106, member: 273419"] Just had the Kingston DDR3 (PC3-12800) 1600mhz 8G module (product number: kvr16s11 ) installed in slot 0 (and the remaining 2GB of stock RAM remained in slot 1) now totalling 10GB of RAM. I opened Logic Pro X with 30 audio tracks (x 3 plugins per audio track) and WOW, it just did not overload (as it would have done with 2x 2GB of stock RAM). iPhoto opened in 2,5 seconds (with 2x 2GB it was more like 20+ seconds). I am very very pleased with the result. Perhaps in the future I will take out the other 2GB stock RAM and add another 8 GB of RAM. PS: for those interested, the DDR3 memory fact sheet for the Macbook Pro mid 2012 is based on part number HMT325S6CFR8C made by SK Hynix from China. [url]https://www.skhynix.com/inc/pdfDownload.jsp?path=/datasheet/pdf/module/ds_2Gb_DDR3(C-ver)based_SODIMMs(Rev.1.0).pdf[/url] The supply voltage for this RAM is: VDD=1.5V +/- 0.075V VDDQ=1.5V +/- 0.075V We can therefore safely assume that in this case Apple's DDR Ram in the Macbook Pro (mid 2012) is 1,5 V, [B]not[/B] 1,35 V ! (as there were a number of discussions on other forums mentioning the fact that 3rd party RAM with 1,5 V could create issues as many assumed the RAM voltage was 1,35 in the Macbook Pro 2012) [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
RAM question (don't know what to do : did my research)
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