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ScratchCat

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Everything posted by ScratchCat

  1. Lots of Linux distributions let you boot from a USB stick or CD so you can test everything out before you install. All you need to do is download Ubuntu or some other distribution, write the file to a USB stick using a tool like Rufus. You can then boot from the USB stick.
  2. Are you able to reproduce the behavior on a Linux Live USB to determine if the problem is software or hardware related?
  3. $124 for a 500GB SSD is extremely high. You can get a 500GB 980 (non-Pro) for half that price.
  4. ScratchCat

    why does everyone hate epic again?

    A ridiculously bloated launcher. I'm not saying Steam is a lightweight application but Epic's launcher 600MB RAM doing nothing and balloons to 1.5-1.7GB when downloading a game. Over 1GB for a program which just displays small image tiles and downloads files.
  5. There is a difference between using modern programs on a hard drive and programs written when practically all computers used a hard drive. Windows XP is reasonably smooth even on a two decade old laptop while Windows 10 is practically unusable for a good 15 minutes after start up if installed on a HDD. The control panel on a Celeron M is more responsive than the settings app on a R7 4800U. The same goes for websites. Have a look at some simple, javascript free webpages and try open them on old devices. It won’t be as instant as on newer hardware but it isn’t slow by any means.
  6. I’d be interested to see if this allows patching out any sort of DRM or licensing code to allow the program to continue to work once the licensing servers are shutdown. Although I don’t have a use case for this right now it’s nice to have.
  7. Summary Ampere has released their new ARM based CPU lineup sporting up to 128 cores on a single die on TSMC's 7nm node. Ampere's first generation Q80-33 had up to 80 of Arm's Neoverse-N1 cores clocked at 3.3 GHz along with 32MB of L3. The M128-30 adds 60% more cores but clocks 300MHz lower at 3GHz and halves the L3 cache to 16MB. Inter-socket communication has improved drastically over the previous generation, reducing latency by a third. Workloads without large memory bandwidth needs see good scaling with the extra cores despite the lower clockspeed. Memory bandwidth hungry workloads are held back by the tiny 16MB cache (Epyc has 256MB for 64 cores) with some applications performing worse than on an equally clocked Q80-33. Single thread performance actually regresses relative to the Q80-33 due to the combination of lower clockspeed and half the L3 Overall the new chip isn't clearly better than the previous generation, providing massive improvements in some workloads but kneecapping performance in anything which requires more cache per core. My thoughts The M128-30 seems quite impressive on paper, 128 N1 cores at 3 GHz with a TDP of 250W. Single thread performance wasn't terrible on the Q80-30 so this should have been a real threat to Epyc. However the 16MB L3 drags down performance in memory intensive workloads, sometimes below the performance of the older Q80-33. Compute heavy and cost sensitive workloads are the likely target here with two chips costing 25% less than Epyc CPUs with a similar level of performance. Source https://www.anandtech.com/show/16979/the-ampere-altra-max-review-pushing-it-to-128-cores-per-socket
  8. Try disable BD PROCHOT in ThrottleStop, some laptop manufacturers force the CPU to throttle when a non OEM power supply is detected (or the power supply dectection fails). Source (for a Dell laptop, perhaps Lenovo has a similar thing): https://superuser.com/questions/1160735/stop-dell-from-throttling-cpu-with-power-adapter
  9. The 80 core version has a significant amount of power headroom in most workloads, averaging around 200W. 128 cores would put it over the 250W TDP but it looks like aiming for a slightly less aggressive frequency would keep power in check. The main problem I foresee is the tiny 16MB L3. That's half of the L3 the 80 core version had and it already was becoming cache starved in certain scenarios.
  10. According to the spec sheet for the drive the drive is only rated for 72TBW so either the counter is broken (which somewhat invalidates the rest of the SMART) or it's one very lucky sample. For reference a 256G MLC Samsung 840 Pro died after 2.2PB written.
  11. It also has had >1PB of writes which is insane for a 128GB drive.
  12. This is a much less dangerous vulnerability than Spectre or Meltdown. It requires two processes which want to communicate with each other via a covert channel. Meltdown and Spectre on the other hand allow the attacker to read the memory of a (possibly privileged) process which doesn't want to communicate with the attacker.
  13. ScratchCat

    I am surprised nobody has posted these news yet…

    The A510 is a clean sheet, 64 bit only design but hardly improves over the outgoing A55 which makes it doubly disappointing.
  14. Remember Cambridge Analytica? Where the personal data of 87 million Facebook accounts where scraped? Or when Facebook stored hundreds of millions of passwords in plaintext? They might be better at protecting it but nothing is completely secure. Doesn't help their only reason for doing so is they can sell the info for more if they are the only ones with access.
  15. The current was something like bitcoin is mined is shuffling around numbers in the block header until is meets some difficulty criteria. For instance you can change the nonce value or include different transactions, both change the hash. Proof of stake uses your unspent transactions (coins) to generate the block hash instead by hashing parts of the transaction instead. More value in a transaction lowers the difficulty so the more money you have (the bigger your stake) the more likely you will find the block hash. Since you have a finite number of transactions there are only a small number of attempts you can make, meaning the power consumption is low. See here for more info: http://earlz.net/view/2017/07/27/1904/the-missing-explanation-of-proof-of-stake-version
  16. The way the fans are designed means they stop quite quickly. The 1050 Ti is a more power hungry card, it's normal for it to spin faster than a 730. If temperatures aren't a problem don't worry about it.
  17. What card are you using? It shouldn't affect the lifetime of the fan heavily. Servers operate with fan speeds near the maximum constantly and you don't hear about those breaking all the time.
  18. ScratchCat

    Interesting story I came across. Recently, Wiki…

    There are two stack overflow posts from 2013 which refer to that image: https://stackoverflow.com/questions/18586466/foursqaure-photo-add-against-checkin https://stackoverflow.com/questions/18232898/node-js-http-get-with-node-js-step-module
  19. As long as it’s not conductive or interfering with any spinning fans it will be fine.
  20. If you haven’t used it in a while just check the sources are for Debian buster and not some older version. You can check by reading /etc/apt/sources.list.d/raspi.list (or similar files).
  21. Regardless of how it is done, 70-80% of native performance is nothing to be sneered at. In fact, because of the performance jump it can be faster to run Rosetta programs on the M1 over the x86 chip used before. The M1 Firestorm and Icestorm cores are completely different. This isn't some low end SoC using two sets of 4 A53s for "8 core marketing purposes". The smaller Icestorm cores are already almost as performant as older A72/73 designs. Amazon's Graviton2 (full fat 64 core ARM server processor) would like a word with you:
  22. Since this is partly a micro controller silicon launch (RP2040) with a bunch 3rd party models Arduino will be launching their own copy with this silicon. I wouldn't be surprised if their model has an Arduino compatible pinout.
  23. Theoretically he could image the drives one by one and mount the images. However that requires enough space for the minimum number of drive images as well as space to move the files to a new pool.
  24. Accidents happen and the glass screen protectors offer almost the same feel as the original glass. Plus the resale value should be higher if the display is pristine.
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