Will upgrading to Yosemite from Mavericks slow down my computer (even a little bit)?

[zooby]

.

 

[Taz Mangus]

I upgraded my late 2008 2.53 Ghz C2D MacBook Pro to an SSD and 8 GB ram. I am on Mavericks and notice a HUGE speed increase - I feel like I am using a brand new computer.

However, with the SSD being limited as it does not have SATA III, I often wonder if using Yosemite will be exactly the same as using Mavericks since the SSD is meant to read/write at 500 MB but only does so at 200 MB due to SATA limitations on my older computer. So does this mean that on Yosemite, the speed will be the exact same or will there be a clear slow down? (Before with my 5400 drive, Yosemite was clearly slower on my computer)

The best way to find out is to create a new partition, install Yosemite on the new partition, boot to the new partition and see how the system response is under Yosemite. When you are done, boot back to Mavericks partition and delete the new partition.

 

[gomatt]

I upgraded my late 2008 2.53 Ghz C2D MacBook Pro to an SSD and 8 GB ram. I am on Mavericks and notice a HUGE speed increase - I feel like I am using a brand new computer.

However, with the SSD being limited as it does not have SATA III, I often wonder if using Yosemite will be exactly the same as using Mavericks since the SSD is meant to read/write at 500 MB but only does so at 200 MB due to SATA limitations on my older computer. So does this mean that on Yosemite, the speed will be the exact same or will there be a clear slow down? (Before with my 5400 drive, Yosemite was clearly slower on my computer)

Skip it. I upgraded and there is nothing new or better. Last 2 .x updates have been a step backwards. I would just stay on Mavericks.

 

[Eithanius]

For a start, Finder itself is slower on Yosemite than in Mavericks even on SSD...