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Apple Computing Products:
macOS - Notebook Hardware
Momentus XT 750gb SSD HHD Hybrid Drive Compatibility
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<blockquote data-quote="Stanley" data-source="post: 1384526" data-attributes="member: 118270"><p>Hey I noticed some folks notice or dislike (or read about online and then notice and dislike <img src="http://www.mac-forums.com/forums/mac_images/images/smilies/Wink-Tongue.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /> ) that 7200 rpm hard drives are noisier and vibrate more than the stock 5400s. It's not that big a deal. </p><p></p><p>You can cut this down quite noticeably with some simple DIY efforts. I used some dynamat / roof patch sheet here and there. An example is shown below. Measured from the built-in mic and a metering app, I found this simple change helped by 3-8 dB (depending on frequency). That is significant. What is happening is that the aluminum unibody is acting like a sounding board driven by the vibes from the HD. The DIY panel dampening efforts deaden that energy. Some softer rubber pin mounts would help similarly. The HD floats in rubber bushings, four bushing pins in total. These are the screws that you exchange onto a new HD when you swap.</p><p></p><p>If you are running a 7200, try placing several fingers (not just the tips) onto the surfaces either side of the touchpad. Notice the change in sound / vibes? Well you get more than that with this mod, but it is of that basic nature. So you can try it out conceptually if you'd like. If you tap on the surface of the unibody after this mod…well it gives the impression of being more solid. </p><p></p><p>MBP 13, mid-2009, Seagate Momentus XT 750 gb hybrid.</p><p></p><p><img src="http://i583.photobucket.com/albums/ss280/sjmarcy/HDQ.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Stanley, post: 1384526, member: 118270"] Hey I noticed some folks notice or dislike (or read about online and then notice and dislike [img]http://www.mac-forums.com/forums/mac_images/images/smilies/Wink-Tongue.png[/img] ) that 7200 rpm hard drives are noisier and vibrate more than the stock 5400s. It's not that big a deal. You can cut this down quite noticeably with some simple DIY efforts. I used some dynamat / roof patch sheet here and there. An example is shown below. Measured from the built-in mic and a metering app, I found this simple change helped by 3-8 dB (depending on frequency). That is significant. What is happening is that the aluminum unibody is acting like a sounding board driven by the vibes from the HD. The DIY panel dampening efforts deaden that energy. Some softer rubber pin mounts would help similarly. The HD floats in rubber bushings, four bushing pins in total. These are the screws that you exchange onto a new HD when you swap. If you are running a 7200, try placing several fingers (not just the tips) onto the surfaces either side of the touchpad. Notice the change in sound / vibes? Well you get more than that with this mod, but it is of that basic nature. So you can try it out conceptually if you'd like. If you tap on the surface of the unibody after this mod…well it gives the impression of being more solid. MBP 13, mid-2009, Seagate Momentus XT 750 gb hybrid. [img]http://i583.photobucket.com/albums/ss280/sjmarcy/HDQ.jpg[/img] [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
Momentus XT 750gb SSD HHD Hybrid Drive Compatibility
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