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SSD Slow read/write Crucial MX100

djjaes

djjaes

macrumors regular
Original poster
Jan 24, 2015
120
43
US South
I just upgraded my SSD from Kingston V300 SSD (no issues, but wanted a faster drive), and replaced it with Crucial MX100. I put a Crucial BX100 in my 2012 MBP and it reads/writes faster than MX. Both have about 250 GBs space. I used CCC for both, so I am a bit stumped.

Black magic read/write test for MX was about 257.6/266.3, and on MBP the BX was reading at about 360.2/520.

Boot time is around 15 to 20 seconds on Mac Pro (15 seconds or less on MBP), but that read/write speed has me a bit concerned. I am thinking of returning and getting another BX100 for Mac Pro.

Any ideas?
Thanks.
 
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MBP 2012 has faster SATA than tower Mac Pros. Drive is bottlenecked.
This bottleneck can be overcome by installing a SATA III PCIe card.
 
That makes sense now that you said that. I feel I have a bit of egg on my face, :)
 
djjaes said:
That makes sense now that you said that. I feel I have a bit of egg on my face, :)
Click to expand...

While large file write speeds are limited, general operating system performance will be close to what you were seeing on the MBP.

If you are looking for ludicrous speed, check out this thread:
https://forums.macrumors.com/threads/1685821/

The cMP can easily match and outpace the current nMP OOTB (out of the box) experience in a single blade configuration by almost 50%. :eek: On the "value" end of the spectrum, a 256GB Samsung XP941 @ $254 from Newegg and a $20 Lycom adapter is a definite buy. Even the 128GB XP941 @ 129.00 is a breath of fresh air compared to SATAIII SSD's thanks to 1000MB/s+ read speeds.
 
handheldgames said:
...The cMP can easily match and outpace the current nMP OOTB (out of the box) experience in a single blade configuration by almost 50%. :eek: On the "value" end of the spectrum, a 256GB Samsung XP941 @ $254 from Newegg and a $20 Lycom adapter is a definite buy. Even the 128GB XP941 @ 129.00 is a breath of fresh air compared to SATAIII SSD's thanks to 1000MB/s+ read speeds.
Click to expand...
IIRC though, this configuration will need TRIM Enabler. Am I correct?

Update: I just saw your post here stating that you did use TRIM Enabler, but that causes problems. So, best to go with the Apple SSD blade solution.
 
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TheStork said:
stating that you did use TRIM Enabler, but that causes problems.
Click to expand...

The use of TRIM Enabler CAN cause problems unless the user takes a few simple steps to avoid them. I have been using TRIM Enabler since the Beta days of Yosemite with no issues. And again, this is something APPLE needs to fix.

Lou
 
I plan on using a PCIe card for SSD soon. I need the SATA 3 speeds for my workflow.

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I have my GTX 680 in PCI slot one. Which slot should a blade adaptor be put in for top speeds in the remaining PCI slots? I assume the remaining free spots have the same bandwidth.
 
djjaes said:
I plan on using a PCIe card for SSD soon. I need the SATA 3 speeds for my workflow.

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I have my GTX 680 in PCI slot one. Which slot should a blade adaptor be put in for top speeds in the remaining PCI slots? I assume the remaining free spots have the same bandwidth.
Click to expand...
Slot 3 and 4 shares bandwidth, but as long as you only have one, you´ll be fine. I´ve mine i slot 4.
 
Baunkjaer said:
Slot 3 and 4 shares bandwidth, but as long as you only have one, you´ll be fine. I´ve mine i slot 4.
Click to expand...

Thanks for the info. I plan on getting a blade ssd soon. Im researching the best one that I can get (not OWC, don't card of sand force, lol)
 
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