Upcoming patches will slow down all Intel CPUs?

5 - 30% ?

Wednesday, January 3, 2018 by anotherside | Discussion: Personal Computing

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.

 

First Previous Page 1 of 4 Next Last
Uvah
Reply #1 Wednesday, January 3, 2018 11:44 AM

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.

DaveRI
Reply #2 Wednesday, January 3, 2018 1:50 PM

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.

JcRabbit
Reply #3 Wednesday, January 3, 2018 1:53 PM

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.

alaknebs
Reply #4 Wednesday, January 3, 2018 2:41 PM

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?

Jaroepz
Reply #5 Wednesday, January 3, 2018 7:47 PM

DaveRI

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..  

admiralWillyWilber
Reply #6 Wednesday, January 3, 2018 9:53 PM

 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.

neone6
Reply #7 Wednesday, January 3, 2018 9:54 PM

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

-Could be a Billion dollar lawsuite no ?

admiralWillyWilber
Reply #8 Wednesday, January 3, 2018 9:57 PM

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.

neone6
Reply #9 Wednesday, January 3, 2018 10:01 PM

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.

neone6
Reply #10 Wednesday, January 3, 2018 10:02 PM

 

Double..

WOM
Reply #11 Wednesday, January 3, 2018 10:40 PM

Hehe, found another reason why I buy AMD.

Larsenex
Reply #12 Wednesday, January 3, 2018 11:17 PM
Jafo
Reply #13 Wednesday, January 3, 2018 11:25 PM

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?...

alaknebs
Reply #14 Thursday, January 4, 2018 3:04 AM

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?

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

--------------

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

 

Uvah
Reply #15 Thursday, January 4, 2018 6:46 AM

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

JcRabbit
Reply #16 Thursday, January 4, 2018 11:39 AM

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 <img src=" />

happyboy7
Reply #17 Thursday, January 4, 2018 2:09 PM

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.

alaknebs
Reply #18 Thursday, January 4, 2018 2:47 PM

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

ALMonty
Reply #19 Thursday, January 4, 2018 3:10 PM

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

DaveRI
Reply #20 Thursday, January 4, 2018 3:10 PM

JcRabbit

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.

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