Ok so I really need an SSD... I have been waiting for prices to come down, and I see these drives on here daily. Can I get some expert opinions on what would be my best way to go?
I do alot of 3D work, graphic design, motion graphics, rendering, and gaming on my machine. I am running off a 1TB drive, and have 2 other 1TB drives for storage.
I was thinking of getting one of these drives. or doing a RAID with 2 of these.
You basically will get the same amount of storage in either way. I would, however, go for a bigger single drive to save a port. And I just guess, it would take longer to read and write from 2 drives. And you do a lot of graphics, so that little difference might matter. The reason I bought 500GB was because I frequently deal with large data. I had a 7200RPM 500GB drive before and do not feel much difference in typical tasks. But with programs accessing the large data often (statistics), I feel like I am flying. And the noise and heat levels much lower too.
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.
These were the same arguments going from core memory to solid state memory...
... Good thing we didn't switch to using that technology, huh?..
We really need to keep perspective.. Sounds like the discussions when MLC came out against SLC offerings..
Hey it beats out the performance of the 500GB Hybrid Seagate XT at just under 3x the cost! That said TLC is where the technology is going in the consumer space to be price competitive. We can argue all day on what data leveling algorithms makes sense for single, double, or triple NAND cells to extend the usable life of the device but mass producing high speed and high density cells is a given - they will never be error free! That means error correcting logic (either on magnetic or silicon) is what makes it work reliable when a cell fails either by internal or external influence.
If your data is important back it up.. If its on mobile devices or devices without proven life cycle reliability, synchronize your data to the cloud or home. EVERY device WILL fail, this is a given, but there are steps you can take to insure the risk is mitigated while enjoying the benefits of lower cost and relatively better performance for the biggest bottleneck inside today's systems.. Permanent Data Storage. So unless your running a business or a critical computing service, invest and take advantage of the newer technology and we will all benefit sooner than later with lower cost and higher performing products for everyone.
If your still on the fence, know that the Samsung Software allows you to preallocate 'spare' space to enhance the usability of the cells being written for those folks that like to fill there drives to maximum capacity.. Rule of Thumb says if you keep your HDD drive utilization between 50 and 60% there's enough free space to optimize defragmentation and support of contiguous files.. In SSD, this problem goes away in that you don't need to worry about file placement optimizations, but you still need to worry about free space. If you don't, your SSD could burn out sooner than later with continuous writing to the same cells.
Bottom line if your doing equal or more writing than reading of files, then you want a good hard drive not an SSD for that data storage. Ideally we need two drives minimum in our systems; one SSD for the O/S and Programs, and a HDD for the data. This way you can have the best of both worlds at the best price.
I got one of each, the 250 for the wife's laptop and the 500 for me!
MLC is still the better technology, especially for smaller drives. TLC doesn't last as long and uses more power, making it particularly unsuited to mobile uses. The low P/E lifespan isn't as much of an issue at 500 GB if people don't use the whole drive, but at smaller sizes (especially 120 GB), it could be a significant problem. TLC has slow writes and higher latency.
MLC was and is much cheaper than SLC. TLC isn't that much cheaper than MLC. It is simply not all that compelling at the moment.
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