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Intel/Windows 30% performance reduction

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Huge Intel CPU Bug Allegedly Causes Kernel Memory Vulnerability With Up To 30% Performance Hit In Windows ...Read more at https://hothardware.com/news/intel-cpu-bug-kernel-memory-isolation-linux-windows-macos#lexZvVoxHiJekKSh.99

I've read about this at other places too.

If this becomes true our hobby is in serious trouble. ..

 

Edit: Maybe better placed in hangar chat or hardware section.

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18 minutes ago, FlightSimmer68 said:

3770K. Not vunerable :biggrin:

Same generation as mine, so im clean also!

 

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Do you have to do the update when they roll it out. I have all updates shut off in w10 via the group policy editor. I will check my 4790k to see if it's at risk. 

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My system is vulnerable. 1 year old, time to trash it.

Kind regards, Michael

 

 

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22 minutes ago, FlightSimmer68 said:

3770K. Not vunerable :biggrin:

Don't see the need for doom and gloom as it's clearly patchable.

At the expensive of 5 to 30% reduction in performance. I believe a recall/exchange is in store!

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Sorry guys, can someone explain what is this? I have an 7700K too. I will lose 30% when? What's Intel response to that? I can't imagine they won't fix this.

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9 minutes ago, klamal said:

Anyone know if the 2500k is vulnerable?

2500k 2º generation i think so its clean, only affects the last 3 generations!

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I have i7-5820K - NOT Vulnerable. 

 

It could be that chipset LGA 2011 and probably 2011 chipset successor are not vulnerable

 

- Just hype for no reason.  I bet this problem can be fixed by a cpu microcode.

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9 minutes ago, Daedalus said:

Sorry guys, can someone explain what is this? I have an 7700K too. I will lose 30% when? What's Intel response to that? I can't imagine they won't fix this.

It is not very clear yet, however you should not get too stressed at this stage.

The issue is with the way the CPU handles the compiled code, normally the CPU can "read ahead" and predict what the new instruction is about and execute it without the need to read the assembler code, think about this as a "Cache" of instructions.

What they found is that this could allow hackers to exploit vulnerabilities of the OS.

So MS, Linux, etc. will need to address this issue, now this doesn't mean that you will lose performance that badly and your simulation experience is going to go to the floor! what this means is that your CPU will need to work harder to execute certain functions as the OS might prevent it from predicting the next code it needs to execute, alternatively MS might patch the OS and leave the code prediction to continue.

We need to wait and don't panic.

Best Regards,
Simbol

 

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Microsoft have already Released a patch on the window insider fast ring testing the patch.

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Woah woah woah - That test tool linked earlier in the thread for SA00086 is NOT testing for the just announced CPU issue. The tool is testing for the Intel Management Engine flaw that came out in late November. (Link)

The IME issue is a relatively straightforward firmware patch to plug a hole found in the IME hardware on Intel chipsets. You should consult with your motherboard manufacturer to see if they have a patch available.

The CPU issue is a bit of a different animal, apparently, and I don't believe that there are any recent generation Intel processors which will be immune to it.

-Greg

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Core i5 2500K NOT vulnerable according to test tool. Ive got a I7 7700K sitting right next to me with a new system all ready to get built...:angry:. My feeling is it probably does not affect most of us not involved in cloud stuff or large database storing as mentioned earlier. We could all probably get away with not installing the patch and be fine. YMMV and do your own diligence.

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1 hour ago, Adrian123 said:

At the expensive of 5 to 30% reduction in performance. I believe a recall/exchange is in store!

Nobody knows *exactly* what any patch will do. So far it's just pure FUD which teh interweb will love and speculate about endlessly, even in spite of any facts that may emerge.

I'm sure you can all sue Intel and get money from them. God Bless America :nangis:

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The suggested workarounds *may* cause performance issues but it is just a workaround and it is intended to immediately eliminate the security risk for a threat which does not exist for desktop users.

I really would not worry about it, wait for a real fix.

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