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alexh2020

macrumors newbie
Original poster
Aug 27, 2012
2
1
Hello,

I have been doing a lot of research on the problems that I have been experiencing. I will try to explain them to the best of my ability.

I recently installed a 120 GB Sandisk Extreme SSD in my MAIN BAY. I couldn't say no to the $70 price tag

Current setup: is a 15" Macbook Pro 2.0 GHz early 2011 model.
This is what my current MacBook Pro specs show: (TRIM IS ENABLED)
Vendor: Intel
Product: 6 Series Chipset
Link Speed: 6 Gigabit
Negotiated Link Speed: 6 Gigabit
Description: AHCI Version 1.30 Supported

I have tested the write and read speeds with two programs:
[Black Magic and Nova]

Problem 1: Low write speeds. Uncompressed and Compressed.
Current Readings: Black Magic 125-150 write / 360 read and Nova 230 ish write.

Problem 2: (The Black Magic testing now seems to act differently. The write needle is very bouncy. I could almost say its glitchy. It will bounce to 140 write and quickly drop to 120-125 write.)

When I first installed the SSD, the readings were pretty stable 150 write / 430 read and didn't drop dramatically. From what I am reading, the SSD will slow down once it fills up for the first time. Also, Black magic uses compressed testing which will cause my SSD to show slower write speeds.

Questions for you: I don't feel as if my speeds are that amazing. Actually I can't tell much of a difference (Previous setup was stock 5400 rpm HDD). Should I be seeing higher write speeds? Is there something that is bottlenecking? Does the Sandisk Extreme SSD just suck? Should I switch out to another SSD? How can I get 300-400 write speed? You get the drift.
 
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The drive is capable of upto 550mb/s read and 510mb/s write so your speeds are very low

I would recommend a firmware update to the drive and a fresh install Of os x and go from there.
 
Hello,

I have been doing a lot of research on the problems that I have been experiencing. I will try to explain them to the best of my ability.

I recently installed a 120 GB Sandisk Extreme SSD in my MAIN BAY. I couldn't say no to the $70 price tag

Current setup: is a 15" Macbook Pro 2.0 GHz early 2011 model.
This is what my current MacBook Pro specs show: (TRIM IS ENABLED)
Vendor: Intel
Product: 6 Series Chipset
Link Speed: 6 Gigabit
Negotiated Link Speed: 6 Gigabit
Description: AHCI Version 1.30 Supported

I have tested the write and read speeds with two programs:
[Black Magic and Nova]

Problem 1: Low write speeds. Uncompressed and Compressed.
Current Readings: Black Magic 125-150 write / 360 read and Nova 230 ish write.

Problem 2: (The Black Magic testing now seems to act differently. The write needle is very bouncy. I could almost say its glitchy. It will bounce to 140 write and quickly drop to 120-125 write.)

When I first installed the SSD, the readings were pretty stable 150 write / 430 read and didn't drop dramatically. From what I am reading, the SSD will slow down once it fills up for the first time. Also, Black magic uses compressed testing which will cause my SSD to show slower write speeds.

Questions for you: I don't feel as if my speeds are that amazing. Actually I can't tell much of a difference (Previous setup was stock 5400 rpm HDD). Should I be seeing higher write speeds? Is there something that is bottlenecking? Does the Sandisk Extreme SSD just suck? Should I switch out to another SSD? How can I get 300-400 write speed? You get the drift.

Hi, I own a Macbook Pro 15 inch Late 2011 2.2gHz quad core and I installed a SanDisk Extreme 480gb SSD about a couple of months ago. I haven't had any problems with it. The reason I installed such a large drive is because of that reason as the drive gets closer and closer to full capacity performance slows down. I googled "tweaking SSD performance in MacOSX" and found a lot of helpful tips to extend the life and improve my SSD's performance. That said one of the major tips I saw was that they say don't use these drive performance programs like Black Magic because they tend to wear down the SSD. I personally haven't really cared about taking a screen shot of my SSD speed stats and I haven't noticed any performance issues. I hope this helps somewhat, even though I know I probably didn't answer your whole question.
 
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