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alpenwasser

Senior Moderator
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Everything posted by alpenwasser

  1. So... the reason I've not really been around much in the past year was because I was doing the final year of my degree and didn't really have any spare time. But the good news is: I'm finally an officially certified electrical engineer (albeit an unemployed one at the moment)! I will be updating the list in the near future (no, seriously! :D), but it turns out that there have been some updates to the Python libraries I'm using and the plot output is kinda broken (very nice of them, isn't it?), so I need to debug that first before I can update the rankings. Yay!
  2. Just thought I'd give a quick status update: I have been terribly busy with offline life; working on my thesis and all that good stuff, so I basically haven't been around at all. Lectures will be finished by mid-June though, so I will have some breathing room again at that point and will trawl through the thread and update it at the latest in a few weeks. Thanks for your patience, and sorry for the delays. Cheers, aw
  3. Well, I already went into this in my above posts: I recommend reading up on the various CD and DVD standards. If you want to be sure about this, you will need to truly, properly understand those standards, or more precisely: How data is written to, stored on and retrieved from the disks. And no, I've not done this, because I no longer have an optical drive anywhere. But when in doubt, always go to the primary source. Also, as said: If your burner/reader has a compromised firmware, then it can do pretty much whatever it wants without you noticing. When you burn the disk, it can embe
  4. @Alir Alright, I let the md5 collision generator run over night, results are as follows: For a 15 kilobyte input file, it took 36 minutes to generate the hash collision. For 33 megabyte input file, it took 3 hours and 40 minutes. Granted, this is just one way to generate MD5 collisions; maybe there are faster ones out there. But at least based on these results, if the iso you downloaded was clean, infecting it and generating the data needed to generate a hash collision locally on your machine does not really seem practical to me, because iso files tend to be significan
  5. Fundamentally, yes. See: http://www.mscs.dal.ca/~selinger/md5collision/ But: Assuming your initial iso file is clean, I'm not sure how practical it is for a malware to infect it on your machine. Attacks using hash collisions which I've read about so far were written with specific files in mind, files which were known to the attacker at the time when the malware was written (if I'm wrong, feel free to correct me). As @mariushm said, this step can take hours to days, depending on the files (for MD5, that is). This is no problem when you write a malware for a known iso, then send it o
  6. Ah, so your basic concern is: Download iso Verify w/ checksum. iso is clean (as said, this could already be unreliable if the website has been compromised and a false checksum provided) Malware which is already somewhere on your computer injects a payload into the iso after you have checksummed it You then burn that compromised iso to a disk You do a checksum of the entire disk, but it shows up with the same checksum as originally because the malware payload is somewhere which you can't access on the disk This seems difficult, but not entirely impossi
  7. I'm not saying you can't post pics though. You know, for science, or stuffs.
  8. Just to be sure I understand your question right: Are you asking if an install medium image you can download from a linux distro site can be compromised? Or just any old sort of data? In the case of install media: It depends a bit on the source of your image and reference checksum. If the install medium can be compromised, it's not entirely unlikely that the website has been compromised as well (after all, how else does a malicious party upload a compromised image onto the server in the first place?), in which case they can just supply you with the "correct" checksum for the compro
  9. Well then, it has been fun. Farewell, captain! And welcome Boogieman!
  10. Oooh, shiny! Logo came out nice.
  11. Assuming you're talking about 19" racks: The 19" standard doesn't really define the outer dimensions of the rack cabinet, which is how you end up with different widths. Around here, the common widths you can easily buy are 600mm and 750mm, with the latter offering more space for cable routing (useful if your cables are stiff and you don't want to violate their minimum bend radius, for example). 600mm offerings are more common here though (might be different in other markets). Other things like depth, hole shape and such have already been mentioned. Since information on
  12. Sadly, I have but one upvote to give per post, but I would give more if I could! Well, at least not without gaming the system, but our overlords would probably revoke my database privileges for such shenanigans.
  13. Ah, custom water block stuff. Excellent.
  14. Haha, alright, sounds good. I'll update the list when you make the new post.
  15. Leaving the manufacturing aside: If you want to understand how a CPU functions, I recommend trying to understand the following concepts: - Transistors - Field-Effect Transistors - Metal-Oxide Field-Effect Transistors (those would be those famed MOSFETs we keep hearing about, although the ones in your CPU are obviously not the same as the ones in the power delivery system) - CMOS technology Once you have a rough grasp of how CMOS works, you can start trying to understand some basic CMOS circuits (inverters, AND gates, NAND gates, see here for a bunch of ex
  16. Primarily to simplify things (though some people have such a hodgepodge of drives it can still be pretty time-consuming to enter their config into the system). But yes, it is of course completely arbitrary.
  17. Alrighty then, time for an update! Note: The list of noteworthy builds will now also hold the decommissioned builds. @MyNameIsNicola Updated. I hope I got it right, so many drives. @scottyseng Updated @maxtch Added your second system, updated your first one. @b3nno Added system to list. Nice box! @Jonny Updated. @Ziggidy Nope, rankings are not dead, but yes, it does usually take me a while to get around to them. Added your system to the list. Thanks for the entry! @username6465 Updated. @leadeater Answered your question in chat already
  18. Okidoki, I've cleaned out some of the more pointless arguing. Please keep in mind that depending on where your'e from and your personality, this question is completely harmless to some and rather loaded for others (as we've seen). We're going to keep this open, but please keep it respectful. You can't handle it... just leave the thread alone and move on. Thanks.
  19. Hey folks, Please note that as per the Community Standards, we'd prefer not to have these sorts of general "X vs. Y" threads. They just lead to flamewars too frequently (yeah, I know, such a surprise!). However, since people are actually behaving nicely around here so far, I'm going to keep this one open. It will be locked if things go sideways though. Thanks. Threads which ask specific questions about specific products are fine though, just FYI ("Which of these CPUs/GPUs/hickymadoodads would be more well-suited for task dothethingies?", that sort of thing).
  20. I took the original SATA power cable from the PSU, removed the original power connectors and mounted new ones in the needed number and spacing. Bought them from Lutro0's store if I remember right. You can probably pick them up at other modding stores or eBay as well.
  21. Oy, Andre, you're still alive! Long time no see. I'm quite liking the A41 to be honest. Can't say much on the rest of the hardware though, I haven't really been keeping up (still rocking my LGA1366 Xeons ).
  22. I run 12 SATA drives off a single cable in my server without issues, like so: (Not all drives are connected in that pic, but I've tested it with 12 drives and it works without problems.) What you need to ensure if you want to do this is: 1) Can your PSU deliver enough power on the connector at the right voltages? 2) Can your wires carry the required amount of current? To answer the first question, you can check your drive or your drive's spec sheet, if you can find it. Sometimes manufacturers will indicate max power draw or max c
  23. Jesus, people take this stuff so seriously, one might think it actually matters. Seriously, calm the fuck down folks. No reason to get personal. You want to argue the cons and pros of optical disks vs. HDDs, fine, but either do it like civilized people, or don't do it at all.
  24. If you don't spend at least 75% of your yearly salary on your PC and sell one of your kidneys, you are obviously a heretic! More seriously though, I think a lot of people around here (myself included) frequently buy not so much what they need, but what they desire. You are among the more pragmatic folks, nothing really wrong with that.
  25. I think my SR-2 cost me about 700 USD back in the day. Then again, it was and still is a board which doesn't really have an equal. Still, not exactly the most pragmatic purchase I've ever made. But I just wanted one, and it is an awesome board, even today (it's about six years old now).
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