Samsung 830 vs Samsung 840 vs Crucial m4

which is better? i see that samsung 830 is at

Features

Up to 520MB/s Sequential Read Speed
Up to 400MB/s Sequential Write Speed
80K IOPS Random Read Speed
36K IOPS Random Write Speed


while 840 is

Features

Up to 540MB/s Sequential Read Speed
Up to 250MB/s Sequential Write Speed
96K IOPS Random Read Speed
62K IOPS Random Write Speed

How come the Sequential Write Speed got lower?

and Crucial m4 is Performance

Sustained Sequential Read: Up to 500 MB/s (SATA 6Gb/s)
Sustained Sequential Write: Up to 260 MB/s (SATA 6Gb/s)
4KB Random Read: Up to 45,000 IOPS
4KB Random Write: Up to 50,000 IOPS

i mean like is it possible you guys can explain the meaning of each? thx

 

I think seq. write got lower because that's a number that only means anything when moving large files to and fro. How often does that happen in everyday usage compared to the daily ins and outs of using the OS?

Random access and IOPS are much more important to real world usage.

 

Where are you getting that data? Sequential write speeds should be around 450MB/s:

Samsung SSD 840 Pro (256GB) Review

The 840 is undoubtedly the fastest drive right now.

 

the 840 and 840 pro are different.

 

Ah, sorry I didn't see that.

 

is samsung 830 better or the samsung 840?

i know the pro is better but not sure about 840 and 830

 

The 840 is still better than the 830. Thessdreview has reviews up for the 830, 840, 840 pro, and crucial m4.

 

At this point in time, I would say the 830 is still the superior driver overall if battery life isn't a consideration (when the storage subsystem is pushed hard for long periods of time).

The 840 'scores' better and the power consumption has been greatly improved at load; but it is still an unproven part now (and at least for the next half year or so).

 

The 840 Pro uses MLC NAND while 840 Standard uses TLC NAND which happened to be used only on things like Flash Drive NANDs, Smartphone NANDs and such with lower write endurance. If I'm correct, the rated P/E is 1000 as opposed to usual 3000, 5000. Also, they're both using a 21 or 20nm manufacturing process.. so basically for the user, more energy efficiency and such... For Samsung, cost savings for making more out of less material.

If things goes well as expected, the standard 840 would still be reliable...
The conditions:
-it's Samsung MDX Controller prevents write amplification really well
-Improved TRIM and Garbage collection

It is said that the efficiencies and tight controls of the controller will allow the Samsung 840 standard to maximise it's NAND's life and allow it to live as long as a reliable SSD you can find on the market today.

BTW currently, a number of Samsung 830s received some price cuts. The 128GB model and 84GB model has reached price parity with the Crucial M4. On Newegg sometimes. Amazon direct too. Imo, the 830's a better buy than the Crucial m4.

 

The 840 isn't worth it. The 840 PRO is, just keep yourself to either the 830 or M4, you can't go wrong with either of them

 

If you want to save some money, get an 830. Otherwise, go for the 840 Pro. You'll barely notice a difference while using them.

I was able to buy 2x 830's for $169.99 each - that's damn good. One 840 Pro is $269.99, which isn't worth it in my opinion - I'll wait until the prices drop some or some sale arises (cyber Monday?)

 

This man speaks the truth

 

I've been using the 830 for a few months now and have been more than happy with its performance. If I had purchased this computer now instead of June, I would have given the 840 some consideration but still go with the 830. The 840 looks like it will give a bump in performance, but I value reliability above performance, and ATM, that means I value the 830 more. In time I imagine the 840 could be considered as reliable but that will take some time.

 

btw, the original post's sequential write figures only applies to the 256GB and 512GB variant.

 

Samsung 830 (condition new) sold by Amazon, on Amazon's website is going for:-
128GB @$70
256GB @$154

temporary sale. Recently Newegg also put up the 128GB Samsung 830 on sale, @$80 for less than a day. Good luck, if you're buying one. I never really thought of buying a 2nd Samsung 830 (mine's 256GB). The price @$0.60/GB is irresistable... Gotta grab.

 

Those pricess are incredible. Maybe we'll see the 512GB drop too.

Sent from my SPH-M580 using Tapatalk

 

That's what I'm waiting to see. I would buy on price. There's little chance you'd be able to discern a difference in the drives.

 

About 80% of daily disk access measured in Microsoft's diskmon are small file reads and writes with most being writes.

The large sequential numbers seen in synthethic benchmarks account for 1% of daily disk access.

If I were in the market to buy an SSD today I'd be looking for a drive that does equally well with compressible data as it does with incompressible data plus excellent with small file reads/writes.

The Corsair Neutron GTX and Neutron are the drives I recommend looking into.

Synchronous memory is also something to require. The 240GB GTX contains eight 32GB modules of Toshiba Toggle Mode 24nm NAND flash memory while the Neutron contains 16x16GB modules of Micron 25nm synchronous memory.

The Neutron GTX surpasses the Neutron in high sequential and 512k write transfer and that is where the differences stop for the most part. Both Neutron SSDs have great read performance and both have top tier write performance when we test in random or incompressible data; data that is typically seen in video, music and photographs. The GTX result of 474MB/s, when testing in AS SSD, is untouchable and the total point score over 1000 for both in that program is rarely seen. Looking past that, thessdreview says both Corsair Neutron SSDs were in the top four ever tested in PCMark Vantage.

 

I believe Samsung SSD retailers are getting rid of the 830 series. Here's the sequence of event I've observed in relation to pricing and the upcoming release of the Samsung 840.

1. Newegg put the 128GB non-kit version up for $80 and the promo last for approximately a day.
2. Just about a day ago, Amazon put up the 128GB and 256GB for $70 and $154 respectively.
Note: Newegg and Amazon are the only distributors of the Samsung 840 that were authorised to accept Samsung 840 pre-orders.
3. Small numbers of retailers are also following suite with the pricing. of the 256GB drive but the best I've seen with these guys are $169, for that price, you might as well take the Samsung 830 instead of the Crucial M4.

I'm also led to think Samsung will no longer produce the 830 SSD because it uses 27nm MLC NANDs. The Samsung 840 features shrunken NAND pieces and are a lot more cost effective to produce. Especially The 840 standard edition that uses TLC NANDs that are a lot cheaper than MLC NANDs.

It's definitely a move forward imo.

 

I thought TLC NAND had a lot lower write endurance and was difficult to manage because of all the voltage states (8) compared with MLC (4).

 

if you're interested in the technical workings of SSDs...stay far, far away from forums and give yourself a day or two to read through AnandTech's SSD anthology articles/SSD reviews.

anyhow....they're all modern SSDs. Just pick the cheapest one. ESPECIALLY if this is your first SSD.

The one minor issue is that HISTORICALLY, the m4 has needed firmware updates to iron out some bugs. If you're highly uncomfortable 'booting' from USB drives and using command line, then the 830 MAY be a better choice for you. I honestly can't remember if the 830 has had critical firmware updates.

 

Ars also has a nice article on what makes SSDs tick: Solid-state revolution: in-depth on how SSDs really work | Ars Technica.

As for the 830, i do not know of any critical firmware updates that were needed. What generic User #2 said about the M4 is true, but Crucial has at least a good history at fixing those bugs and fixing them fast once it's identified. The only major bug i know of is the 5000 hours issue and they fixed that within two weeks after reports of the bug came in.

Samsung has the best reliability track record right now, followed by Crucial and Intel and a few other smaller players.

 

On the drives you mention, your actual choice should be totally price dependent. I have a number of M4s, C300s and X25s and just received my first Samsung 830 (at $169.99 it was too good to pass up).

In actual use you will never be able to tell the difference between your three choices.

Perry

 

I guess that's true, but it's said that the MDX controller is a lot more advanced than the MCX, I'm guessing it has a lot to play out in the Samsung 840 standard. It manages write amplification a lot better than the MCX so that covers the TLC's lower write endurance.

The Samsung 830 prices on Amazon are back to the usual retail prices, unfortunately. I managed to get a Samsung 830 128GB ($70 within that 20 minutes it was up) for my other notebook direct from Amazon after several months of use of my Samsung 830 256GB. It's very reliable and hasn't slowed down or throttled at all, 0 crashes and BSODs.

 

I just quickly calculate with 1:1 Write Amplification a 256GB SSD with 1000 erase cycles ~ 140GB/day writes for 5 years. Your average user will likely only write/erase ~ 50GB at worse case, so even if WA is 2:1 worse case is ~ 6 years before failure. Most users though I think from a study somewhere (no link) was only about 20GB/day. So I guess as drives get larger the WA becomes a little less of an issue.

I like my Samsung drive, just bought another 256GB. But the Crucial are a great value. I have a 512GB Crucial M4 that I got for ~ $300 and a 256GB mSATA M4 for ~$180.

 

where you get 512 crucial m4 for 300?

 

It was on sale.