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  1. J

    Samsung 840 non-Pro: Sufficient for my intended usage?

    I just checked newegg, and the models you listed are selling for more than $100. Are my math skills as bad as my reading skills? Or is your inside man at newegg giving you a special discount? Can you put me in touch with your inside man at newegg? Buddy, I'm not sure what your problem is...
  2. J

    Samsung 840 non-Pro: Sufficient for my intended usage?

    You must know someone at newegg who is willing to come in on a Sunday to ship your order. For some reason, that person only has access to three models out of scores that newegg carries. And then I guess that person will hand deliver it to you, since none of the usual carriers can pickup from...
  3. J

    Samsung 840 non-Pro: Sufficient for my intended usage?

    I read the title of this thread and it is about the Samsung 840. I guess my reading skills must be terrible, since my reading of your posts today make it look like you are asking questions about several non-Samsung SSDs. Where are you planning to buy your SSD? Were you planning to throw a...
  4. J

    Samsung 840 non-Pro: Sufficient for my intended usage?

    You mean this is for the same computer that you asked about a couple weeks ago and had already been answered by several people? If you had two weeks to make a decision, why did you wait until the last minute to ask a followup question?
  5. J

    Samsung 840 non-Pro: Sufficient for my intended usage?

    For what? And when?
  6. J

    Samsung 840 non-Pro: Sufficient for my intended usage?

    Why?
  7. J

    Samsung 840 non-Pro: Sufficient for my intended usage?

    Why? Isn't there anyway you can wait and get a better model?
  8. J

    Avoid erasing NAND as much as possible

    That's a myth. None of the SSDs that have been written until failure have been reported to enter a read-only mode.
  9. J

    Good 64gb SSD

    I'll second the recommendation on the 128GB Plextor M5Pro, which has a 5 year warranty. I would not trust a 5 year warranty from OCZ, since who knows if OCZ will even be around in a few years.
  10. J

    Hate stupid drive imaging software that can't skip errors...

    Actually, ddrescue is likely to be more efficient at that than any tool that tries to access the filesystem. ddrescue is smart about the way it copies the data, skipping over large areas of bad sectors to copy only the easily readable sectors first. Then it can go back to try multiple times on...
  11. J

    Hate stupid drive imaging software that can't skip errors...

    You lost me again. What do you mean by "DD-Recover"? I was referring to ddrescue (not to be confused with dd or dd_rescue). ddrescue can clone drive-to-drive or drive-to-image-file. The link I gave previously gives several examples of different usage. Also, there is a tutorial in the...
  12. J

    Hate stupid drive imaging software that can't skip errors...

    Right. This is standard procedure for data recovery. I'm surprised people are suggesting otherwise. ddrescue is the best tool I know of for imaging a failing drive.
  13. J

    Hate stupid drive imaging software that can't skip errors...

    I'm not sure what you are asking. Standard procedure is to image the failing drive to another one, and then only work with the copy to recover data. Even better is to then image the image to a third drive, and then work only on the third drive, keeping the second as a best-case backup in case...
  14. J

    Hate stupid drive imaging software that can't skip errors...

    ddrescue
  15. J

    960GB SSD for "under $600"

    That may be the case. I'd even go so far as to say it is more likely than not to be the case. But if there is even a 10% chance that the WA of his workload will be 2 or higher, then I think it is bad advice to assume a WA of 1.1 in estimating the endurance. In the absence of solid evidence...
  16. J

    960GB SSD for "under $600"

    You seem to be assuming a very low write amplification, around 1.1. Some workloads may have considerably higher WA, in the 2 - 5 range.
  17. J

    How much nNANDmemory comes off a wafer at 20nm

    Actually, yield is not likely to be significantly higher with larger wafers. There is an effect, due to a lower percentage of "edge" die, but it is hardly likely to be "dramatic". I think you may be confusing yield -- which means the percentage of usable die out of all die in a wafer -- with...
  18. J

    New 128gb SSD advice (M4 vs Sammy 840 vs Vertex 4)

    Why take the risk? Go with a more stable company like Samsung or Plextor. And why ask again when it is already discussed in the thread you linked?
  19. J

    Samsung 840 non-Pro: Sufficient for my intended usage?

    You just check the SMART attributes. And unless you are planning on doing a huge amount of writes to the SSD, you should not have anything to worry about. For all but the most brutal workloads, the write amplification should be well under 10, but I will assume a brutal WA=10. Then 1000 erase...
  20. J

    Samsung 840 non-Pro: Sufficient for my intended usage?

    This statement can be misleading. People shoud NOT conclude that their Samsung 840 is likely to be useful up to 3500 erase cycles (or even half that). The data retention time of the SSD probably decreased drastically at some point past 1000 erase cycles, but the XS tester did not test data...
  21. J

    Understanding SSD MTBF

    If you assume a constant failure rate and continuous usage, you can convert MTBF to average annual failure rate (AFR) with this formula: AFR = 1 - e^( -8760 hours / MTBF in hours ) So, for example, MTBF of one million hours corresponds to an average annual failure rate of 0.87% , meaning...
  22. J

    New 128gb SSD advice (M4 vs Sammy 840 vs Vertex 4)

    I'd go with the 128GB Plextor M5P. High quality SSD with a 5-year warranty. It is $125 at newegg now, but with your $15 credit, it fits in your $110 budget.
  23. J

    Samsung 840 Pro SSD benchmarks

    The shipping firmware had a bug on the 840 where the LBAs written attribute stopped working at some point (I think it was around 2 TiB, but I'm not certain about that). I heard that the firmware update fixed that problem, but since I don't have an 840, I cannot verify that. My 840 Pro (with...
  24. J

    Samsung 840 Pro SSD benchmarks

    I've have noticed that there is a wide variation in the raw value of attribute 177 on the new 840 Pros. Obviously my previous speculation about it being some sort of burn-in test is wrong, since that would be expected to create about the same count on every SSD. I don't know how to explain the...
  25. J

    Want to be part of AnandTech Storage Suite 2013? Read this

    That graph shows that the heavy workload trace average write speed is similar to the (incompressible data) sequential write speeds of the SSDs. But what about the overall trace average speed, and the average read speeds? I also notice that the gap between red and blue on your graph for the 840...
  26. J

    Want to be part of AnandTech Storage Suite 2013? Read this

    I don't think it matters very much which specific applications are tested. Just as long as several common ones are included, like in the review you linked to.
  27. J

    Want to be part of AnandTech Storage Suite 2013? Read this

    Those results show that there is a measurable difference between the fastest and slowest SSDs. I certainly would not dismiss it as "small". I think you drastically underestimate the importance of including realistic tests in the review for common tasks, even if you think there is not much...
  28. J

    Want to be part of AnandTech Storage Suite 2013? Read this

    Well, even if it does not vary much between SSDs, boot speed it is still a worthwhile test. If there are a number of common tasks (that many people do) where the speed of the SSD does not make a difference, then that should be represented in the review testing. At a bare minimum, one of those...
  29. J

    Want to be part of AnandTech Storage Suite 2013? Read this

    If you have not tested it, then how do you know? If you have tested it, then please link to the test results.
  30. J

    Want to be part of AnandTech Storage Suite 2013? Read this

    Spoken like a philosopher. :| The purpose of testing SSDs is not to assume how they will behave, but to test it. If all SSDs come out having similar times, then (as I said before) that is a useful result. People will know that for that task (and similar ones), SSD performance is not important...
  31. J

    Need help deciding on sub $200 SSD

    $180 for a 240GB Intel 520 is a hell of a good price. Where do you see that? amazon and newegg want $225 and $244. The 256GB Plextor M5Pro is still $200 at amazon.com (it usually costs more, but has been on sale for a few days now). That is an excellent SSD.
  32. J

    Want to be part of AnandTech Storage Suite 2013? Read this

    Actually, I do not agree with that last statement. I see no urgency to choose only tasks that will differentiate SSDs. Sure, it is helpful to have some tasks that differentiate SSDs. But most important is to have a large selection of tasks that are of interest to people reading the review. If...
  33. J

    Want to be part of AnandTech Storage Suite 2013? Read this

    Sure, but huge, complicated traces are about the worst way to test SSDs.
  34. J

    Want to be part of AnandTech Storage Suite 2013? Read this

    I agree. For comparing similar SSDs, traces are almost useless, since the results depend critically on the peculiarities of the program used to record and playback the traces. For example, both anandtech.com and techreport.com used traces to test the Samsung 840 Pro and OCZ Vector SSDs. If you...
  35. J

    Need a 7mm SSD please

    Do you have any pictures? If yours are anything like mine, the screws cannot be tightened down so that the head fits tightly to the case -- the screws are too long without the spacer.
  36. J

    Need a 7mm SSD please

    The 256GB Plextor M5Pro is on sale for $200 now at amazon. That is a good price for an excellent SSD. And it is 7mm in height.
  37. J

    What's wrong with sandforce?

    What are you talking about? What variance, what sources?
  38. J

    NEW OCZ Vector

    Is that sales in dollars, or in number of units? I was interested in any evidence you might have to back up your statement that "there are more 256GB drives being sold now than 128GB drives". First you seemed to retract the statement (except for a particular unspecified model mentioned by an...
  39. J

    NEW OCZ Vector

    Without more information, that means little. What criteria does newegg use to declare something a top seller? Is it based on number of sales, or dollars of sales? Can one of the items on that list sell ten time as many units as another also on the list? If so, then a simple count of "top...
  40. J

    What's wrong with sandforce?

    I'm not especially interested in the method they are using. I did note that the Samsung 830 and Crucial m4 both have an average rating of 4.7, while the Vertex 4 has an average rating of 4.6, and yet amazon has the V4 ranked above those others. Given that strange ranking, and that amazon gives...
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