Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
1TB vs 512GB SSD Speed
- Thread starter segalas
- Start date
- Sort by reaction score
They should be roughly the same...only the 256GB might be slower. I think Anandtech actually did a comparison on these.
I can't do it right now because I'm still migrating my data. But earlier I unscientifically did a test. I'd estimate it took about 5 or 6 seconds from the power button to the desktop.
To put this in perspective, my 2009 17" MBP also has an SSD (SATAII gets about 180MB/s read and 100MB/s write on disk bench).
I hit both power buttons at the same time and the new Retina MBP was at the desktop before the startup chime on my old 17" MBP even began. And that machine isn't no slouch it boots very quickly with that SSD.
----------
Just run it until its done a few loops then stop it
I can't do it right now because I'm still migrating my data. But earlier I unscientifically did a test. I'd estimate it took about 5 or 6 seconds from the power button to the desktop.
To put this in perspective, my 2009 17" MBP also has an SSD (SATAII gets about 180MB/s read and 100MB/s write on disk bench).
I hit both power buttons at the same time and the new Retina MBP was at the desktop before the startup chime on my old 17" MBP even began. And that machine isn't no slouch it boots very quickly with that SSD.
----------
Just run it until its done a few loops then stop it
WOW! That is insane! I just tested my mid-2010 MBP's (no SSD, I been waiting for a rMBP) startup, 1 and a half minutes.
The IOP speed also increases, not just the sequential file transfer speed. Smaller files will greatly benefit from that.
Quu your killing me here. I'm sending you the 500 dollar increase to pay. Lol
Just kidding. I need to figure out what I can get in my signature below before I can commit. I need to hide this purchase . ROTFLMAO
Just kidding. I need to figure out what I can get in my signature below before I can commit. I need to hide this purchase . ROTFLMAO
I have the same drive arriving soon
The SSD stick has RAM on board. We know that the 256GB and 512GB SSD's have 512MB of RAM on board. We don't yet know what amount of RAM the 1TB has. It could have 512MB like the others or it could have 1GB.
But the point is this RAM is used as a cache so incoming data to the SSD will hit the RAM first (which will be faster than the NAND sitting behind it) which is likely why the write speeds are higher than read speeds. But ya know, this is just an educated guess, I have a RAID array in my server and my RAID card has dedicated RAM on it for write caching also and writes there are much faster than reads as a result.