if 850 evo and 850 pro are both 40nm lithography...

and i know that the evo is TLC and the pro is MLC, what other advantages are there to pick the pro's MLC over the evo's TLC? the 40nm helps out the evo's longevity and most of us won't even put a dent in it's life, much less the pro's.
i also know all the pro's come with the triple core MEX controller, whereas the only the evo's 1TB comes with the same triple. the other less storages come with the dual MGX. i've been researching these drives the last couple of hours and all the comparisons are neck and neck. one may have an advantage here, the other there and most are negligible. sustained writes on all capacities of the pro whup some . the evo you need to step up to minimum 500gb version or higher to have an equivocal sustaiined write speed that doesn't sputter after a few seconds. still trying to figure out where the ~30% price premium is justified?

tiller? somebody else knowledgeable? fixing to buy two of these but don't know if i should spend the ~ extra $200 for endurance i won't need. i would like to fill one of my msata slots with whatever drive i end up picking for a boot os, but the other i will eventually fill for a virtual box of some flavor of linux so i can complile some kernels when i get the free time.

 

The difference is not in endurance. It is in higher sustained performance.

I have long ago stopped worried about endurance (that's what 30% OP'ing buys... mostly because of MUCH less WA; the sustained speed boost is a bonus).

If you are to keep the system for longer than ~30 months or longer, $200 is immaterial, imo. Even if you're considering keeping the system for only ~18+ months, but for work purposes, it is still worth spending the $$.


Some of the technical reasons for picking MLC vs. TLC is the fact that TLC will get slower, faster, than MLC topology; because of much higher voltages required to write new data as the cells wear down and also more error correction when decoding what data is actually stored in each cell.

TLC is like buying an abused second hand corvette and thinking you can hang with the Ferrari's of the world. Wishful thinking and ultimately; wasted $$$. If, true and high performance is what you need.


As you seem to be able to (budget-wise) to be able to buy either; buy the better option. You will not regret it. Now, or when you sell/give them away a half decade or so down the road.

If you're not in a rush for this purchase - even that $200 price premium can be slashed to half or less. Sales are the real prices in today's world. As is price matching from your favorite store.


Good luck.

 

Really appreciate the answer. Tried to pm you about it, but it failed. Was aware of that specific that the voltages get higher as TLC wears down but it makes sense. At 40nm though, you still think.it is am unwise choice. I am more worried about reliability even though I back up and archive. Just seems the 850 evo is still a good choice at 40nm. Id rather buy the better option now, but it just came out and I can afford it, but I need 2 off the bat. 2 512gb pro's is out of budget. So are 2 500gb evo's but $500 is easier to swallow. I'll probably just get one 850 pro now. I don't have much time to wait for a good sale as I'm going to pull the trigger as early as next week.

Hey and since you popped up in my thread, and I can't private message you, what do you suggest for a msata? MLC is mandatory since it will end up bein my boot drive. Happen to know which ones run coolest? I am guessing Samsung would but I am not interested in the 840evo(pro. Don't want any repeat of problems like I had with m500. Stability is also a first priority for a boot drive. Also, hardware encryption. Any good intel suggestions et all these requirements? Or should I just use the 850 pro in the interim for boot drive until all the stars align?

Oh and I will be keeping this for at least 3 years. That is my upgrade cycle. I am almost on year 4 of my lowly np5160. Not really worried about endurance on any reputable ssd unless it's a non Intel sandforce.

And since I'm blowing you up with questions, might I ask what a good cheap secondary msata? I'll probably just get 128gb for that one (unless it has 128gib die) as I want to virtualize Linux and have android SDK on there. Write amplification could be a problem there if I start compiling kernels and possibly roms. But thanks tiller. Hoping to have a sager 8278-s by the end of the month and plan on maxing ram with g. Skill out the gate, and hoping 850 pro msata comes out sooner than later as I don't want to reinstall windows more than I have to.