Upcoming patches will slow down all Intel CPUs?

5 - 30% ?

https://www.theregister.co.uk/2018/01/02/intel_cpu_design_flaw/

Not sure what to make of this:

https://www.theregister.co.uk/2018/01/02/intel_cpu_design_flaw/

AMD Ryzen seems to be the winner if patches are selective and only affect Intel CPUs.

 

393,445 views 68 replies
Reply #1 Top

What're they doin'...taking lessons from Apple.

I just read the article. Every intel processor made over the last ten years?? That's......unreal.

Reply #2 Top

Thanks for the heads-up.  Now at least if my machine turns into a dog next week I won't be pulling out what little is left of my hair.

Reply #3 Top

Yep. And since Moore's law has been dead for a long time, a 30% slow down takes us back to the level of CPUs manufactured 10 years ago. So, your brand new $1,000 CPU will now be performing the same as that old CPU you can get on eBay today for $20.

Nice, eh? :)

EDIT: Except that one will also be 30% slower, so basically, in terms of performance, we're just about ready to go back 10 years in time.

Reply #4 Top

supposedly it depends on what you are running. games are not affected that much... it's said.

i suppose of more interest is what intel is doing to fix this for future architectures.. and which ones will get the fix. too late for anything due in the next year or 2?

Reply #5 Top

Quoting DaveRI, reply 2

Thanks for the heads-up.  Now at least if my machine turns into a dog next week I won't be pulling out what little is left of my hair.



  LOL me too im folically challenged enough..Yes thx for the info..8O  

Reply #6 Top

 Well i will probably never buy intel again. I bought my computer last year only to find it is going to slow down at least 15 percent. This is like intel processors not amd were to hot to overclock. Actually there shared caching was there only real advantage without it their archetecture werent good enough.

Reply #7 Top

 If this is Intels fault, surely people must be compensated having thrown their money away ? :O

-Could be a Billion dollar lawsuite no ?

Reply #8 Top

Amd is still like 2017 only intel is backwards. Im pissed to find out my k7 6700 sucks should of went amd. Intel you suck. I will never trust you again. I want my 1050$ back.

Reply #9 Top

Quoting admiralWillyWilber,

I want my 1050$ back.

That's what i mean....you are not alone wanting to be compensated (millions of Intel users out there), surely someone will pick up on this and file against Intel/computer manufacturer for compensation.

Reply #10 Top

 

Double..

Reply #11 Top

Hehe, found another reason why I buy AMD.

Reply #13 Top

Quoting Larsenex, reply 12

Yes....I'd be extremely suspicious of one-sided issues re Intel and AMD ....particularly in the current climate [AMD attempting to revive its brand].

Millennium Bug, anyone?...;)

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Reply #14 Top

heh. more vulnerabilities. the other one (spectre) affects amd too. though... the article is kinda confusing as it says amd is not vulnerable to meltdown which they label as variant 1 and 2, but then says amd is practically immune to 2 but will have to wait for microcode for variant 1 or recompile software with countermeasures.

ok.. the article got it mixed up.. variants 1 and 2 are spectre and meltdown is 3. hence amd immune for 3 but iffy on 1 and 2.

https://www.theregister.co.uk/2018/01/04/intel_amd_arm_cpu_vulnerability/

though the last comment about cert recommend throwing away cpu sounds nonsense. if intel, amd et al were told of vulnerability last june, they ain't going to apply hardware fixes to previous or even current gen cpu. doubtful about upcoming gen. so whatever you buy any time soon is vulnerable. for your average home user that is... server and stuff have more choices, but do you see companies making wholesale changes like that and betting whatever they change to won't have other issues yet to crop up? XD

more info:

https://googleprojectzero.blogspot.co.uk/2018/01/reading-privileged-memory-with-side.html

https://meltdownattack.com/

https://spectreattack.com/

last 2 links to same thing

https://www.theverge.com/2018/1/3/16846784/microsoft-processor-bug-windows-10-fix

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seeing as for whatever reason this patch hasn't appeared for me yet on windows update... i manually downloaded it off ms catalogue - https://www.catalog.update.microsoft.com/home.aspx

just 1 thing.. make sure if you are using 3rd party antivirus/security suite, check if they are patched to be compatible with the update.. and obviously you grabbed the right version for the right os....

https://support.microsoft.com/en-gb/help/4056892/windows-10-update-kb4056892

https://support.microsoft.com/en-us/help/4056898/windows-81-update-kb4056898

https://support.microsoft.com/en-us/help/4056897/windows-7-update-kb4056897

 

Reply #15 Top

I'm so glad my laptop has an AMD processor. Its slow enough because its three years old. Any slower and I'll have to buy it a cane. Lol

Reply #16 Top

Benchmarks are slowly coming out. Games are hardly affected, since they make very few calls to the Kernel. However, anything that relies heavily on the Kernel - such as file I/O - suffers a big impact, so this will have a massive effect mostly on data centers. For everything else the impact should be fairly minimal.

The Windows patches are NOT out yet. The fixes should be a part of the next round of Windows updates though.

Linux developers have made it very clear what they thought of all of this (and Intel) when coming up with an acronym for the fix:

We came up with a list of technically correct acronyms:

User Address Space Separation, prefix uass_

Forcefully Unmap Complete Kernel With Interrupt Trampolines, prefix fuckwit_

but we are politically correct people so we settled for

Kernel Page Table Isolation, prefix kpti_

Linus, your call :)

Reply #17 Top

I just bought a new Chromebook, and Intel Pentium is on a sticker near the keyboard.  I'm assuming this is affected and would be considered Linux?  It's still within the return period and I'm considering just returning it and waiting until the perfected chips are being used in new devices.

Reply #18 Top

you'll have to wait years i imagine for proper hardware fix. as for chromebook... (or chromeos) check

https://support.google.com/faqs/answer/7622138#chromeos

Reply #19 Top

I ain’t scared, my desktop is an i5. Bring it on!  :D As JC said effects will be minimal. 

Reply #20 Top

Quoting JcRabbit, reply 16

However, anything that relies heavily on the Kernel - such as file I/O - suffers a big impact, so this will have a massive effect mostly on data centers. For everything else the impact should be fairly minimal.

Ya, I'm starting to think that to a large extent most of us will only notice when we're online trying to talk to the workhorses - they'll be the one's struggling.

Reply #21 Top

someone did speculate since some drm/anti cheat have a lot to do with virtual machines and what not, they (and thus the games with them) get bogged down... who knows.

Reply #22 Top

Quoting Jafo, reply 13


Quoting Larsenex,



Yes....I'd be extremely suspicious of one-sided issues re Intel and AMD ....particularly in the current climate [AMD attempting to revive its brand].

Millennium Bug, anyone?...;)

In this case, Intel itself [not AMD] released the news that its processors up to 10 years old had security flaws, and that it would release patches that may impact on performance by up to 50%.  Microsoft also released patches to fix the issue from an OS point of view.  However, AMD is not responsible for breaking the news.  Apparently, it was a couple of engineers at Google, who first informed Intel and Microsoft of the issue.

I know that if I were an Intel CPU owner from within that time frame, [which I am] I'd be mightily pissed at the huge performance hit, but I'd also be suspicious.... very suspicious.  I mean, why has this only come out now... a 10 year old flaw?  And why is it necessary for these CPUs to take a such a big performance hit when patched?  Does anybody else smell fish?

On another note, I'm so glad I went with an AMD Ryzen for my new build.  I had considered an Intel based rebuild, but as luck would have it, I decided against it due to cost considerations.... and my Ryzen 1700 does overclock very well, so performance won't be an issue. 

As for what I'm going to do about my i7 4970K, well I suppose it'll be a bit of wait and see.  Just because the patch has been issued, doesn't mean I have to apply it, and if I'm somehow forced to, well I'll check my options then.

 

Reply #23 Top

To be really accurate, this is not Intel's fault so much as it is a very specific set of specialized verification folks at Intel.    I would be very surprised if they got fired, either, because the skill is so specialized.   You can't just replace them.  Their annual performance reviews might not turn out so good, though. 

 

Reply #24 Top

It's like a 1% hit, people.  Check the people actually doing real benchmarks.

Reply #25 Top

Quoting Excalpius, reply 24

It's like a 1% hit, people.  Check the people actually doing real benchmarks.

Frankly, I don't know what to believe anymore.  It just seems that too many people have differing opinions about what's what.  A 1% hit is well below what most are saying, so I'm just going to wait until the situation is better clarified for the average/general user.