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SSD Problems Yosamite

Unknown96

Unknown96

macrumors newbie
Original poster
Mar 30, 2015
15
0
Hey guys today i changed to SSD On my iMac with a 240gb kingston, i puted it in a usb 3.0 enclosure and clean installed Yosemite 10.10, when i booted it was faster then on HDD, and apps performance was great except the read and write in benchmarks got me worried, i tried using trim enabler to enable trim same thing nothing changed. So any ideas how to get my read write faster? On hdd it was 110mb/s read and write 118mb/s on SSD it dropped to 40mb/s read and write. Any suggestions would be nice. Thank you :)
 
Unknown96 said:
Hey guys today i changed to SSD On my iMac with a 240gb kingston, i puted it in a usb 3.0 enclosure and clean installed Yosemite 10.10, when i booted it was faster then on HDD, and apps performance was great except the read and write in benchmarks got me worried, i tried using trim enabler to enable trim same thing nothing changed. So any ideas how to get my read write faster? On hdd it was 110mb/s read and write 118mb/s on SSD it dropped to 40mb/s read and write. Any suggestions would be nice. Thank you :)
Click to expand...
You bought a Kingston, such results are normal. Kingston makes cheap SSDs that use cheap NAND which perform poorly.

http://www.anandtech.com/show/7763/an-update-to-kingston-ssdnow-v300-a-switch-to-slower-micron-nand
 
i got the SSD in my laptop and working pretty fast, what can i do to speed things up on my iMac?
 
Unknown96 said:
Hey guys today i changed to SSD On my iMac with a 240gb kingston, i puted it in a usb 3.0 enclosure and clean installed Yosemite 10.10, when i booted it was faster then on HDD, and apps performance was great except the read and write in benchmarks got me worried, i tried using trim enabler to enable trim same thing nothing changed. So any ideas how to get my read write faster? On hdd it was 110mb/s read and write 118mb/s on SSD it dropped to 40mb/s read and write. Any suggestions would be nice. Thank you :)
Click to expand...

If your SSD is still connected via USB, then the 40 megabyte/sec read/write speeds are due to the limitations of the USB 2 bus.
 
You can't enable TRIM on the USB3 bus - it's for internal (or thunderbolt) busses only.

My suggestion would be that your system is bottlenecked - likely because the USB bus is not designed for continuous high bandwidth data transfer when the system is under load.
 
yes my ports supports 3.0 USB and in my country they don't sell thunderbolt enclosures or i would have bought one, do you guys know any cheap thunderbolt enclosures that i can see and buy ?
 
That's okey i will order one from Australia Thanks anyways :) i will make it as solved this thread
 
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