SSD Slow read/write Crucial MX100

djjaes

macrumors regular
Original poster
Jan 24, 2015
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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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Demigod Mac

macrumors 6502a
Apr 25, 2008
775
233
MBP 2012 has faster SATA than tower Mac Pros. Drive is bottlenecked.
This bottleneck can be overcome by installing a SATA III PCIe card.
 

djjaes

macrumors regular
Original poster
Jan 24, 2015
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That makes sense now that you said that. I feel I have a bit of egg on my face, :)
 

handheldgames

macrumors 68000
Apr 4, 2009
1,697
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Pacific NW, USA
That makes sense now that you said that. I feel I have a bit of egg on my face, :)
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:
http://forums.macrumors.com/showthread.php?t=1685821&page=27

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.
 

TheStork

macrumors 6502
Dec 28, 2008
275
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...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.
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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flowrider

macrumors 603
Nov 23, 2012
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stating that you did use TRIM Enabler, but that causes problems.
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
 

djjaes

macrumors regular
Original poster
Jan 24, 2015
113
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US South
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.
 

Baunkjaer

macrumors 6502
Feb 20, 2009
369
16
Copenhagen, Denmark
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.
Slot 3 and 4 shares bandwidth, but as long as you only have one, you´ll be fine. I´ve mine i slot 4.
 

djjaes

macrumors regular
Original poster
Jan 24, 2015
113
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US South
Slot 3 and 4 shares bandwidth, but as long as you only have one, you´ll be fine. I´ve mine i slot 4.
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)
 

Synchro3

macrumors 68000
Jan 12, 2014
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