I have a 2008 Mac Pro that I keep at work (I didn&#x27;t like the company-issued computer, so brought in my own), and a 2009 Mac Pro at home.<p>I&#x27;ve upgraded them both to SSD, added USB3 via PCIe [1], and bumped the memory up to 32 GB in the 2009. I mistimed [2] the memory updates on the 2008 so only got that up to 12 GB or 18 GB (I don&#x27;t remember which).<p>Neither of these machines shows any signs of needing replacement.<p>If I used them for gaming perhaps things would be different. Now that I think about it, all of my purchases of machines to run Windows over the last 15 years were because I wanted better gaming performance.<p>[1] <a href="http:&#x2F;&#x2F;eshop.macsales.com&#x2F;item&#x2F;Sonnet%20Technologies&#x2F;USB34PME&#x2F;" rel="nofollow">http:&#x2F;&#x2F;eshop.macsales.com&#x2F;item&#x2F;Sonnet%20Technologies&#x2F;USB34PM...</a><p>[2] Memory prices often follow a U shaped curve, starting out high when a new speed of memory is introduced, then falling as that new speed becomes mainstream. Then something faster and incompatible comes out, and as that becomes mainstream production goes down on the older item, and prices rise.<p>For example, current prices at macsales.com of 4x8GB in various technologies for Mac Pro:<p><pre><code>   $290  1866 MHz DDR3 ECC    Used in 2013 Mac Pro
   $200  1333 MHz DDR3 ECC    Used in 2010-2012 Mac Pro
   $195  1066 MHz DDR3 ECC    Used in 2009 Mac Pro
   $780   800 MHz DDR2 ECC    Used in 2008 Mac Pro</code></pre>