F5F Stay Refreshed Power Users Overclocking Testing the performance of an i5-2500k on a Z68MA-D2H-B3 motherboard

Testing the performance of an i5-2500k on a Z68MA-D2H-B3 motherboard

Testing the performance of an i5-2500k on a Z68MA-D2H-B3 motherboard

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xFqtal_
Senior Member
670
04-14-2016, 08:51 AM
#1
I adjusted the CPU ratio to 41x (4.1ghz) based on my motherboard's limits, but during testing it caps at 3.8ghz. I've checked several overclocking guides and followed their advice, yet it still doesn't reach 4.1ghz.
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xFqtal_
04-14-2016, 08:51 AM #1

I adjusted the CPU ratio to 41x (4.1ghz) based on my motherboard's limits, but during testing it caps at 3.8ghz. I've checked several overclocking guides and followed their advice, yet it still doesn't reach 4.1ghz.

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MarioEpic678
Junior Member
15
04-15-2016, 05:57 AM
#2
There is a helpful resource on Intel temperatures, voltages, and overclocking available on the forums: According to their advice, exceeding 1.350V during i5-2500K overclocking is not advisable. This could raise temperatures and accelerate electromigration in your CPU die, leading to faster-than-expected silicon degradation. It’s wise to lower the voltage to 1.350V initially for safety. You might also try running prime95 with smaller FFTs again to verify stability at that lower setting. Your FSB is reported as 100, which should correspond to a 4.1GHz output when using a 41x multiplier. Does CPU-z ever display this information...
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MarioEpic678
04-15-2016, 05:57 AM #2

There is a helpful resource on Intel temperatures, voltages, and overclocking available on the forums: According to their advice, exceeding 1.350V during i5-2500K overclocking is not advisable. This could raise temperatures and accelerate electromigration in your CPU die, leading to faster-than-expected silicon degradation. It’s wise to lower the voltage to 1.350V initially for safety. You might also try running prime95 with smaller FFTs again to verify stability at that lower setting. Your FSB is reported as 100, which should correspond to a 4.1GHz output when using a 41x multiplier. Does CPU-z ever display this information...

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JoloYolo
Member
205
04-22-2016, 12:50 PM
#3
What temperatures are being recorded? Your CPU could be experiencing thermal throttling if its performance is decreasing.
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JoloYolo
04-22-2016, 12:50 PM #3

What temperatures are being recorded? Your CPU could be experiencing thermal throttling if its performance is decreasing.

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Lykrant
Junior Member
3
04-22-2016, 11:43 PM
#4
the cpu operates at 85 degrees during this stress test, following the guidelines from CPUID and HWMonitor
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Lykrant
04-22-2016, 11:43 PM #4

the cpu operates at 85 degrees during this stress test, following the guidelines from CPUID and HWMonitor

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233
04-22-2016, 11:58 PM
#5
In that scenario, the frontside bus frequency seems to be around 93 rather than 100 based on the calculations.
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captainevan100
04-22-2016, 11:58 PM #5

In that scenario, the frontside bus frequency seems to be around 93 rather than 100 based on the calculations.

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lukastias
Member
167
05-03-2016, 01:26 PM
#6
What is the frontside bus frequency? Based on the calculations, it seems logical to assume it's around 93 instead of 100. How can I determine the frontside bus frequency?
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lukastias
05-03-2016, 01:26 PM #6

What is the frontside bus frequency? Based on the calculations, it seems logical to assume it's around 93 instead of 100. How can I determine the frontside bus frequency?

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hd2d3d
Member
214
05-04-2016, 03:10 PM
#7
Adjusting the CPU multiplier follows a similar process in the BIOS. It needs to be included in the same settings list as the CPU multiplier.
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hd2d3d
05-04-2016, 03:10 PM #7

Adjusting the CPU multiplier follows a similar process in the BIOS. It needs to be included in the same settings list as the CPU multiplier.

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TehStratosHD
Senior Member
492
05-05-2016, 12:12 PM
#8
LowlySkeleton :
The adjustment for the cpu multiplier is similar; it should appear on the same settings list as the cpu multiplier.
Regarding BCLK/DMI/PEG Frequency, I set it to 100.5Mhz instead of 100Mhz.
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TehStratosHD
05-05-2016, 12:12 PM #8

LowlySkeleton :
The adjustment for the cpu multiplier is similar; it should appear on the same settings list as the cpu multiplier.
Regarding BCLK/DMI/PEG Frequency, I set it to 100.5Mhz instead of 100Mhz.

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senbonzakura13
Senior Member
372
05-05-2016, 07:42 PM
#9
This might refer to the PCIE frequency. It's not ideal to set it at 100.5; you should go back to 100. This adjustment could impact your graphics card and other components.
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senbonzakura13
05-05-2016, 07:42 PM #9

This might refer to the PCIE frequency. It's not ideal to set it at 100.5; you should go back to 100. This adjustment could impact your graphics card and other components.

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Fred10244
Posting Freak
937
05-05-2016, 08:16 PM
#10
LowlySkeleton :
That seems more like the PCIE frequency. I wouldn't suggest setting it to 100.5; you should go back to 100. This could impact your graphics card and other components too.
What I need is the Frontside Bus Frequency. It might be referred to as core frequency, bus frequency, or something similar related to the CPU and speed.
I plan to revert that back and check again.
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Fred10244
05-05-2016, 08:16 PM #10

LowlySkeleton :
That seems more like the PCIE frequency. I wouldn't suggest setting it to 100.5; you should go back to 100. This could impact your graphics card and other components too.
What I need is the Frontside Bus Frequency. It might be referred to as core frequency, bus frequency, or something similar related to the CPU and speed.
I plan to revert that back and check again.

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