240 MB/s is low for a SSD. Some rotational hard drives are getting close to those speeds.
These are the average read speeds for drives in this bracket. The M4 is at 78% of the speed of the 840. (We are not talking the 840 pro which is significantly more expensive). None of these are at 500. I'm assuming by mechanical drives you are referring to the Velociraptor drives, since any drive using a hybrid SSD built in won't count.
I'm booting an 80gb OCZ Vertex 2 in my laptop. Will I see a noticeable speed increase with this drive?
Regardless, I want the extra space to move my photography off of platters and onto the fast SSD for quicker loading and editing in Lightroom. I want fast performance. What I'm wondering is, would there be any real-world difference in load time between this and a more expensive SSD for a 20-100mb image file? The laptop is a Lenovo t410, which I'm pretty sure is SATA II.
Empirical rating based on...stars and unicorns? Glitter stickers?
I'm all about real-life reviews and impressions of products but you're not exactly giving folks a lot to go on. Perhaps a sentence or two regarding read/write speeds, TRIM or stability/reliability might be a wee bit more useful than "this drive is awesome let's rawk HOOAH!"
I'm at work, give me a break lol
However, my ratings are based on my observations from using the three in my Sony VPCSC laptop, as system drives with negligible data on another drive.
BTW, I still have the stock firmware from when I purchased it early 2012. Good luck!
Somebody please respond. Should I buy this or the Samsung 840 250 GB? I am going to be putting it in a MacBook Pro 2012
The regular 840 uses lousy TLC NAND. MLC is much better. Samsung should not use the same number, 840 for TLC and MLC products. It's deceptive marketing. Unfortunately, it's a common practice in the tech industry to confuse buyers with product number names.
we can also note the very low write speeds for the TLC-equipped Samsung 840.
The voltages we recorded with the Samsung 840 are higher than the Samsung 840 Pro across the board, and also exhibit one of the highest idle voltages that we have witnessed. This is probably due to some hefty background processes to handle the TLC NAND. The only area where the Samsung 840 performed admirably was in the Startup voltage, which came in at a very low 1.13W.
The random write voltage was unsurprisingly very high, and the sequential write voltage requirement is also on the high end. With this being a relatively new SSD, with its TLC destined to begin producing more errors over the life of the drive, we would expect these power consumption figures to grow over the life of the SSD. Even with these relatively 'fresh' readings we feel that this would not be the best SSD for mobile applications.
The low write speed offered with the Samsung 840 Series is going to be a concern for some users. It is especially important that users with moderate to heavy write workloads carefully weigh other options before making the jump to a TLC SSD. The low write speed will be an immediate problem in large file transfer situations, and endurance will be a long-term problem. It is also important to note that the 120GB model of this SSD only has a sequential write speed of 130MB/s and random read IOPS of 32,000, significantly lower than the lackluster write performance that we observed today in our testing.
Including a thermal pad for the controller would help to keep the device cool. We would like to see thermal pads with this SSD when we take the higher power consumption figures from TLC NAND into consideration.
Our steady state testing essentially places a workload upon the SSD until it is forced to begin running the internal management routines and garbage collection during actual usage. This is especially important with this type of NAND as it is definitely going to experience far more data errors than MLC over time. This will create increasing overhead for the MDX controller over the lifetime of the device. The read speed degradation that we observed is worrisome due to the fact that the increasing error rates can trigger these drive management routines, in effect creating read speed degradation in lower usage scenarios than with MLC NAND.
The extreme loss of write performance in steady state in our Iometer testing can also be a sign of long term performance issues in steady state as the NAND ages.
That's a dumb statement. 840 has only been out a couple months, how the hell is it more reliable than the m4 which has been considered one of the most reliable for years. Numbers don't really means much between ssd
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