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8700k clock speed boost. 100.5Mhz bus rate at 100Mhz setting in BIOS.

8700k clock speed boost. 100.5Mhz bus rate at 100Mhz setting in BIOS.

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Blue_Fox_Lady
Member
194
05-30-2017, 06:55 PM
#1
I have an 8700k paired with an MSI Godlike gaming MB.
Setting BIOS to x50 with a base of 100Mhz.
XMP enabled using G.skill 3200Mhz 32GB RAM.
Noctua Nh-d14 cooler is installed.
When I boot into Windows it's set to 100.5, which is making the CPU more voltage-hungry.
It's stable with the current configuration at 1.320 CPU voltage, but it generates a fair amount of heat.
However, after using the Windows-based OC program to adjust it to 100Mhz, it became stable at least at 1.290 voltage. Still, I can't consistently lock it at 100Mhz, and I've tried uninstalling every OC program and updating the BIOS on my motherboard.
All attempts have failed, and every time I open Windows it's set to 100.5.
I also tried disabling XMP, but it doesn't stay at 100Mhz for any reason.
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Blue_Fox_Lady
05-30-2017, 06:55 PM #1

I have an 8700k paired with an MSI Godlike gaming MB.
Setting BIOS to x50 with a base of 100Mhz.
XMP enabled using G.skill 3200Mhz 32GB RAM.
Noctua Nh-d14 cooler is installed.
When I boot into Windows it's set to 100.5, which is making the CPU more voltage-hungry.
It's stable with the current configuration at 1.320 CPU voltage, but it generates a fair amount of heat.
However, after using the Windows-based OC program to adjust it to 100Mhz, it became stable at least at 1.290 voltage. Still, I can't consistently lock it at 100Mhz, and I've tried uninstalling every OC program and updating the BIOS on my motherboard.
All attempts have failed, and every time I open Windows it's set to 100.5.
I also tried disabling XMP, but it doesn't stay at 100Mhz for any reason.

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TylerSkillz
Member
198
05-30-2017, 07:31 PM
#2
Boards simply adjust that. The 100 MHz is the target frequency. My Z77 operates at 100.08 MHz BCLK, unless I shift it to 99.8 or 100.16 MHz, and I've heard of several MSI boards that run slightly below standard 100 MHz.
Your board varies by 0.5%, which falls comfortably within the "spread spectrum" range introduced earlier (like in Pentium 4), designed to reduce electromagnetic emissions from today's computers.
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TylerSkillz
05-30-2017, 07:31 PM #2

Boards simply adjust that. The 100 MHz is the target frequency. My Z77 operates at 100.08 MHz BCLK, unless I shift it to 99.8 or 100.16 MHz, and I've heard of several MSI boards that run slightly below standard 100 MHz.
Your board varies by 0.5%, which falls comfortably within the "spread spectrum" range introduced earlier (like in Pentium 4), designed to reduce electromagnetic emissions from today's computers.

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eastland97
Senior Member
644
05-31-2017, 05:24 PM
#3
Adjust it to 99.5Mhz, keep in mind there are always some fluctuations.
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eastland97
05-31-2017, 05:24 PM #3

Adjust it to 99.5Mhz, keep in mind there are always some fluctuations.

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leopold95
Junior Member
31
05-31-2017, 11:43 PM
#4
that just caused issues. setting 100.5 manually in bios also led to crashes. during the few seconds in windows, it was running at x99.00, same as when I booted with 99.5. but at 100.00 it failed. however, it still boots normally and remains stable.
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leopold95
05-31-2017, 11:43 PM #4

that just caused issues. setting 100.5 manually in bios also led to crashes. during the few seconds in windows, it was running at x99.00, same as when I booted with 99.5. but at 100.00 it failed. however, it still boots normally and remains stable.

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GigiCakes
Senior Member
261
06-14-2017, 10:11 PM
#5
Boards simply adjust that. The 100 MHz is the target frequency. My Z77 operates at 100.08 MHz BCLK, unless I shift it to 99.8 or 100.16 MHz, and I've heard of several MSI boards that run slightly below standard 100 MHz.
Your board varies by 0.5%, which falls comfortably within the "spread spectrum" range introduced earlier (like in Pentium 4), designed to reduce electromagnetic emissions from today's computers.
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GigiCakes
06-14-2017, 10:11 PM #5

Boards simply adjust that. The 100 MHz is the target frequency. My Z77 operates at 100.08 MHz BCLK, unless I shift it to 99.8 or 100.16 MHz, and I've heard of several MSI boards that run slightly below standard 100 MHz.
Your board varies by 0.5%, which falls comfortably within the "spread spectrum" range introduced earlier (like in Pentium 4), designed to reduce electromagnetic emissions from today's computers.

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BlockHeadTWK
Junior Member
5
06-18-2017, 09:46 PM
#6
That's correct, the motherboard fluctuations are typical based on what I've seen in reviews. For instance, my model has a rating of 99.99.
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BlockHeadTWK
06-18-2017, 09:46 PM #6

That's correct, the motherboard fluctuations are typical based on what I've seen in reviews. For instance, my model has a rating of 99.99.

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TsxL
Junior Member
46
06-19-2017, 04:42 AM
#7
cool cool, i'll just have to have that extra bus clock then
thnx for answers guys
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TsxL
06-19-2017, 04:42 AM #7

cool cool, i'll just have to have that extra bus clock then
thnx for answers guys