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  1. I

    Part numbers of CPU's without the meltdown and spectre bugs?

    These exploits are possible via js running in web browsers, fyi.
  2. I

    Massive security hole in CPU's incoming?Official Meltdown/Spectre Discussion Thread

    Literally every client system that has an active web browser is at risk without patching.
  3. I

    Massive security hole in CPU's incoming?Official Meltdown/Spectre Discussion Thread

    AKA, any site with ads against a browser that doesn't have a locked down no script.
  4. I

    Meltdown/Spectre patch clarification please

    Bios lvl code is merely a ucode patch to expose more core functionality to be used by programs to mitigate Spectre attacks. And part of the issue with Spectre is that you pretty much have to have every piece of software that hosts other software updated.
  5. I

    Part numbers of CPU's without the meltdown and spectre bugs?

    You might want to read that document. A15, A57, and A72 are all affected by Variant 3a.
  6. I

    Meltdown/Spectre patch clarification please

    Its not just layered defense. Any application that can run 3rd party code is at risk of Spectre based attacks from said code so long as that code can do simple things like get timings for code sections, etc. Bios/OS patches aren't sufficient to prevent that. It requires any potentially...
  7. I

    Part numbers of CPU's without the meltdown and spectre bugs?

    That's not actually true. A15, A57, and A72 are also affected by a variant of Meltdown.
  8. I

    Better to wait for next gen chips at this point?

    Actually it isn't really nefarious. Win10 codebase has much more significant support for PCID AND VPCID that significantly mitigate many of the performance impacts of both Spectre and Meltdown fixes.
  9. I

    Meltdown/Spectre patch clarification please

    This is categorically false. Literally the only modern OOO processor that apparently isn't susceptible to meltdown is Zen because of a power saving feature (aka literally no one figured out the issue before it went through Project Zero). Power? Meltdown. Sparc? Meltdown. AMD processors not...
  10. I

    Meltdown/Spectre patch clarification please

    All browsers are updating with mitigation patches against JS exploitation of Spectre/Meltdown exploits. The content of these patches is basically massive increases to the best case timer granularity along with making setting up the attacks more difficult by disabling various call functions...
  11. I

    Part numbers of CPU's without the meltdown and spectre bugs?

    Um, they don't allow lower privileged processes to access higher privileged data. If they did, a side channel attack wouldn't be required. This definitely falls into the exploit category and not the bug category. Both Meltdown and Spectre are exploits that target speculative execution...
  12. I

    Part numbers of CPU's without the meltdown and spectre bugs?

    No, there are multiple chips from multiple vendor using multiple ISA that are vulnerable to at least all three major exploits that have been published.
  13. I

    Techpowerup：Intel Says AMD EPYC Processors "Glued-together" in Official Slide Deck

    Problem is that with EPYC, you are limited to VMs of 4 CPUs max. Not just that, allocation boundaries matter a lot too. Basically, you need the workload to fix inside of a CCX, if it doesn't, it takes a significant performance hit.
  14. I

    Who's buying Skylake-X? (You may now change your vote)

    oh cut the BS. HEDT is literally snake oil to for ignorant people with too much money and not enough sense. The fraction of the market that can actually derive any actual benefit from HEDT is astonishingly small. Esp considering for the same cost you can get a Xeon-D and a 7700k or equiv...
  15. I

    Intel Skylake / Kaby Lake

    Never confuse a filed patent with an actual product plan. Companies the size of Intel file hundreds to thousands of patents each year only a small number of which have any relation to any product. Companies routinely file patents just to have it published and public, etc. No, Intel is a...
  16. I

    Intel Skylake / Kaby Lake

    Unlikely, that would have significant technical issues to deal with besides the obvious performance related ones. If Intel does use EMIB, it is unlike to be used for anything to do with core to core interconnect in servers as opposed to core to peripheral functionality (pci complex, memory...
  17. I

    Intel Skylake / Kaby Lake

    Intel have really barely mentioned it besides the blog post they did which would have been done as part of a presentation at IDF (if that still existed). Compared to the mania about AMD and "Infinity Fabric", the hype is very muted. And while transitioning to a mech is a significant...
  18. I

    Intel Skylake / Kaby Lake

    EMIB isn't even that, it is merely a packaging technology. It is basically a cheaper way to do interposers.
  19. I

    Who's buying Skylake-X? (You may now change your vote)

    If you want pure peace of mind, go Seasonic. They are basically the standard by which everything else is judged at this point.
  20. I

    Intel Skylake / Kaby Lake

    They actually don't care about power usage or heat output. They care about power efficiency. If a chip produces 1 KW but does the work of 10+ 100W chips, they won't care.
  21. I

    Intel Skylake / Kaby Lake

    Also this, the TIM they are using is completely stable to at least 25k thermal cycles, has basically no thermal pump out, and has a time stable lifetime measured in decades. AKA, if you are a manufacturer who wants to support 5-10+ year warranties, you require a TIM that will actually last...
  22. I

    Intel Skylake / Kaby Lake

    conductive liquids and electronics are a warranty disaster waiting to happen.
  23. I

    Intel Skylake / Kaby Lake

    Modern chips and designs aren't at all comparable to P4 or C2Q. In both cases, they were designed with a multi-drop FSB, which makes sticking 2 in a package pretty trivial. No modern design uses a multi-drop FSB for basic performance reasons. Adding another slice into a ring is pretty...
  24. I

    AMD EPYC Server Processor Thread - EPYC 7000 series specs and performance leaked

    No, yield without qualifiers is functional yield, period. No we don't know that. We have a rumor that perhaps 80% of dies might be fully functional. A Twitter rumor at that. We have jack. From an account that has been wrong on multiple occasions and just had to step back its latest rumor.
  25. I

    Intel Skylake / Kaby Lake

    Um, you've got things 100% backwards. Adding cores, esp with the ring bus is simple, quick and easy. Adding die to die communication via EMIB or any other MCM solution takes significant planning and time.
  26. I

    AMD EPYC Server Processor Thread - EPYC 7000 series specs and performance leaked

    No, yield has always referred to functional dies post repair/recovery.
  27. I

    AMD EPYC Server Processor Thread - EPYC 7000 series specs and performance leaked

    It is limited to 2S until someone actually demonstrates it going beyond 2S. E7s are available up to 64 sockets. So far AMD hasn't demonstrated any intention or capability for EPYC beyond 2S.
  28. I

    AMD EPYC Server Processor Thread - EPYC 7000 series specs and performance leaked

    Except that design can scale up to 8+ sockets while Epyc appears to be limited to two sockets (and is already an 8 node system at 2 sockets). Also Intel will be replacing their whole server lineup this year with significantly higher performance parts.
  29. I

    Ryzen, Skylake, and everything that's coming next. (MEGA discussion thread)

    Unless threadripper has official support, it isn't. Actual workstations that care about ECC are going to buy hardware that has official support for ECC.
  30. I

    The Ryzen "ThreadRipper"... 16 cores of awesome

    They play at lot more games than just league or CS. For example, one of the current popular games is Player Unknown's Battlegrounds which can be a fairly heavy load on both CPU and GPU.
  31. I

    The Ryzen "ThreadRipper"... 16 cores of awesome

    Generally, yes, that is the go to solution for professional streamers. It allows them a lot more flexibility in production that you just can't get on a single computer, and if you are upgrading every 2 years or so, the old PC is a perfectly viable encode/production machine. Yeah, they use 1...
  32. I

    The Ryzen "ThreadRipper"... 16 cores of awesome

    Encode computer is often just the last machine they had, either 4c or 8c, both are more than enough to encode and broadcast.
  33. I

    MSFT-Qualcomm partnership has ruffled Intel's feathers[Hot Hardware]

    Well then I guess half of iPhone 7's don't have any cellular connectivity then....
  34. I

    Ryzen, Skylake, and everything that's coming next. (MEGA discussion thread)

    Except that what's come before HAS either done that or can do that. Using a protocol layer on a different physical layer, been done. Using a transport layer on multiple different physical layers, been done. It appears that ignorance of what has already been done is causing people to think...
  35. I

    Ryzen, Skylake, and everything that's coming next. (MEGA discussion thread)

    The mythical properties you and others are shoving on to it certainly are ppt slide bs. IF is an interface specification. Nothing more, nothing less. It doesn't turn lead into gold. It won't allow a perpetual motion machine. It is subject to all the same limits and issues that affect all...
  36. I

    Ryzen, Skylake, and everything that's coming next. (MEGA discussion thread)

    IF doesn't fundamentally change anything. AMD will live or die and their products will live or die by attributes that have nothing to do with IF. If AMD reestablish strong market positions in CPUs, it will be because they offer value and performance which is largely independent of IF...
  37. I

    Intel Skylake / Kaby Lake

    Um, what? Literally no other CPU vendor is offering NVMe CPU connected raid. In fact the only way to get it right now is to buy literally hot out of the Fab raid controller ICs from broadcom which retail on cards for roughly $1000. Also as an FYI, every example of either a TR or EPYC...
  38. I

    Intel Skylake / Kaby Lake

    For CPU connected NVMe RAID modes 1/5 that people are literally willing to pay hundreds to thousands for via other means? Yes. They would literally be stupid not to.
  39. I

    Ryzen, Skylake, and everything that's coming next. (MEGA discussion thread)

    No, I haven't seen anything about IF that is in any way really different than any other interconnection network and I've worked with and designed multiple cpu interconnection networks and studied them for literally decades. And beyond that, there are no actual details available about IF that...
  40. I

    Ryzen, Skylake, and everything that's coming next. (MEGA discussion thread)

    Um, you mean like HT, or EV6 bus or P6 bus or QPI or EV7 interconnection network or SGI's NUMAlink or ARM's AMBA or IB or ethernet or USB or by god a simple ancient serial port (take your pick RS-232/422/485)? Cause literally everything you've said applies to them. What you describe is called...
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