31–40 of 43 posts
Any data on older processors? For example I run a sandy bridge 3930k but didn’t see anything? Also how far back are they going to patch?
> [...] Intel expects to have issued updates for more
> than 90 percent of processor products introduced within
> the past five years.
Sandy Bridge is older than that.
Earlier quoted context omitted.
I own haswell and haven't felt any performance impact...
> For context, on newer CPUs such as on Skylake and > beyond, Intel has refined the instructions used to > disable branch speculation to be more specific to > indirect branches, reducing the overall performance > penalty of the Spectre mitigation. https://cloudblogs.microsoft.com/microsoftsecure/2018/01/09/...
Much more so than the bugs themselves it seriously undermines my confidence in Intel that in this time of emergency, they can't bring themselves to address customers with straight talk. Clear information should take precedence over mitigating liability. Yet it's fallen to others to explain defects in their products, and people are even mostly left guessing what their attempts to fix things actually do. Screwups happe…
Of course their longer term strategy seems to be to get ahead in areas like quantum and neuromorphic computing. This is going to keep them relevant in the long term, but in the medium to short term they could have difficulties.
Much more so than the bugs themselves it seriously undermines my confidence in Intel that in this time of emergency, they can't bring themselves to address customers with straight talk. Clear information should take precedence over mitigating liability. Yet it's fallen to others to explain defects in their products, and people are even mostly left guessing what their attempts to fix things actually do. Screwups happe…
Intel is in trouble. They've lost mobile and they're in danger of losing desktop/laptop and cloud. While AMD is some threat there, the much larger threat comes from high performance ARM64 cores. Intel would rather see AMD take market share from them than ARM, since at least AMD Ryzen is still an x64 core and will keep the architectural center of gravity in Intel's area. Of course their longer term strategy seems to b…
When I bought a 7700k over the summer, I went by benchmarks which showed it over Ryzen for most non-parallel workloads. I suspect these numbers bring Ryzen much closer if not beyond. With all these old benchmarks online, CPU shoppers are likely to be misled.
Thinking further, I wonder how benchmarkers patch machines? Will they keep anti-virus enabled so that they receive the 2018-01 patch?
OT, but that guy's picture seems amazingly inappropriate for the topic and unsettling in general.
What I mean is (using a hypothetical): Suppose there's a flaw in the arithmetic unit (e.g. integer division). There's a microcode update, all integer divisions are correct, but run at 86% of previous performance. In next generation, the hardware is fixed and performance will be back up to 100% of designed performance.
Does the same type of handwaving apply to these types of security exploits?
Is this fixable in the next generation in hardware, or is this a permanent tax on performance going forward? What I mean is (using a hypothetical): Suppose there's a flaw in the arithmetic unit (e.g. integer division). There's a microcode update, all integer divisions are correct, but run at 86% of previous performance. In next generation, the hardware is fixed and performance will be back up to 100% of designed perf…
Earlier quoted context omitted.
Intel is in trouble. They've lost mobile and they're in danger of losing desktop/laptop and cloud. While AMD is some threat there, the much larger threat comes from high performance ARM64 cores. Intel would rather see AMD take market share from them than ARM, since at least AMD Ryzen is still an x64 core and will keep the architectural center of gravity in Intel's area. Of course their longer term strategy seems to b…
Intel is also in trouble in the sense that they have multiple class action lawsuits filed against them regarding meltdown/spectre. Anything they publicly say will no doubt be used against them if possible.
Earlier quoted context omitted.
> (Skylake) is the first to have the PCID feature PCID was introduced with Westmere (2010). [1] However it wasn't used in the Linux kernel until 4.14 because no one saw the need. [2] [1] https://www.realworldtech.com/westmere/ [2] https://stackoverflow.com/questions/20155304/does-linux-use-...
But only Haswell added INVPCID.