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post #1 of 11 (permalink) Unread 03-10-2019, 01:51 PM - Thread Starter
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9900k AVX down clock

I'm having issues with AVX offset. AVX will engage randomly when seemingly no AVX workloads are present. Can't figure this out. I've had this problem with multiple boards/chips. Currently running an Asus Maximus extreme XI with the latest bios. The CPU is usually at 5.3 @ 1.35v manual voltage with no AVX offset as I can't figure out the frequency drop. Can anyone shed any light on this? Any help is much appreciated.
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post #2 of 11 (permalink) Unread 03-10-2019, 01:57 PM
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Windows uses the AVX instructions from time to time. It's normal.

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post #3 of 11 (permalink) Unread 03-10-2019, 02:04 PM - Thread Starter
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Quote: Originally Posted by Wihglah View Post
Windows uses the AVX instructions from time to time. It's normal.
Ahh. Thank you for the reply!
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post #4 of 11 (permalink) Unread 03-10-2019, 02:11 PM
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Yep. And if your CPU is indeed stable at 5.3 @ 1.35v, even with a small AVX offset, I'd consider yourself very lucky. That chip is probably in the top 5-10%.

Mine is probably above average and I get 5.1 @ 1.305v with no AVX offset. 5.2 was going to be somewhere near 1.38-1.40v, and that's uncoolable.
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post #5 of 11 (permalink) Unread 03-10-2019, 02:12 PM
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Quote: Originally Posted by lacklusterog View Post
I'm having issues with AVX offset. AVX will engage randomly when seemingly no AVX workloads are present. Can't figure this out. I've had this problem with multiple boards/chips. Currently running an Asus Maximus extreme XI with the latest bios. The CPU is usually at 5.3 @ 1.35v manual voltage with no AVX offset as I can't figure out the frequency drop. Can anyone shed any light on this? Any help is much appreciated.
If you have no AVX offset set you should not be seeing any frequency drop when under load. Also, is that 5.3 @1.35v AVX stress test stable?

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post #6 of 11 (permalink) Unread 03-10-2019, 02:23 PM
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Is Intel SpeedStep enabled?

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post #7 of 11 (permalink) Unread 03-10-2019, 02:25 PM - Thread Starter
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Quote: Originally Posted by tostitobandito View Post
Yep. And if your CPU is indeed stable at 5.3 @ 1.35v, even with a small AVX offset, I'd consider yourself very lucky. That chip is probably in the top 5-10%.

Mine is probably above average and I get 5.1 @ 1.305v with no AVX offset. 5.2 was going to be somewhere near 1.38-1.40v, and that's uncoolable.
Yes, very lucky with this chip. When benching I run it at 5.4 @ 1.4. I haven't got a cinebench run at 5.5 yet, but the highest voltage I've used is 1.44. haven't gone any higher.
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post #8 of 11 (permalink) Unread 03-10-2019, 02:26 PM - Thread Starter
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Quote: Originally Posted by BroadPwns View Post
Is Intel SpeedStep enabled?
it's disabled. So are c states. Power plan is set to high performance
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post #9 of 11 (permalink) Unread 03-10-2019, 02:29 PM - Thread Starter
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Quote: Originally Posted by TahoeDust View Post
Quote: Originally Posted by lacklusterog View Post
I'm having issues with AVX offset. AVX will engage randomly when seemingly no AVX workloads are present. Can't figure this out. I've had this problem with multiple boards/chips. Currently running an Asus Maximus extreme XI with the latest bios. The CPU is usually at 5.3 @ 1.35v manual voltage with no AVX offset as I can't figure out the frequency drop. Can anyone shed any light on this? Any help is much appreciated.
If you have no AVX offset set you should not be seeing any frequency drop when under load. Also, is that 5.3 @1.35v AVX stress test stable?
Yes, no crashes in a couple months at that voltage. Ran the traditional stability tests. Usually just gaming on a daily basis. Stable at 5.4 @ 1.4 but usually only use that for benchmarking
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post #10 of 11 (permalink) Unread 03-10-2019, 04:40 PM
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A lot of games and programs including windows 10 have AVX use.

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