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There are problems with RAM-NB, can my mainboard manage it?

There are problems with RAM-NB, can my mainboard manage it?

H
HeyImZoe
Junior Member
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4
04-26-2025, 05:06 PM
#1
Hey everyone!
I'm currently checking out my old desktop and ran into a puzzling problem I can't quite figure out. I hope you can assist me in understanding it better.
I'm attempting to adjust my DDR3 RAM to 2400MHz by setting the BIOS frequency to 1866MHz, starting from the highest allowed value, and then adjusting the system clock accordingly. Don't worry; I've managed to keep all other frequencies stable and within their normal ranges. Also, I've verified that my system clock can exceed 150MHz, but I only need it to reach 127MHz.
Whenever I increase the RAM frequency past 2200MHz, the system fails to boot. There are two distinct issues that arise in this situation:
If I set the NB frequency above 1050MHz, the screen remains black and the BIOS doesn't produce any beep sounds at all—not even a single one indicating a successful POST.
On the other hand, if I lower the NB frequency below a certain threshold—even without changing the RAM frequency—I encounter a "Base 64 K RAM failure" message. This usually points to faulty RAM, but reverting the settings resolves the problem. It seems the problematic point is tied to the current RAM speed.
At one point, my system even booted with a 2400MHz RAM speed! But once I powered it down, it failed to POST again.
The main question is: How do the NB frequency and RAM frequency interact? Is there a specific frequency ratio that's necessary for stable operation?
My System Details:
A8-3870k APU
2x4GB Kingston HyperX Predator (qualified for 2400MHz)
MSI A75MA-G55 Motherboard
ASUS 6670HD Graphics card
SilentMAXX fanless II 500W PSU
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H
HeyImZoe
04-26-2025, 05:06 PM #1

Hey everyone!
I'm currently checking out my old desktop and ran into a puzzling problem I can't quite figure out. I hope you can assist me in understanding it better.
I'm attempting to adjust my DDR3 RAM to 2400MHz by setting the BIOS frequency to 1866MHz, starting from the highest allowed value, and then adjusting the system clock accordingly. Don't worry; I've managed to keep all other frequencies stable and within their normal ranges. Also, I've verified that my system clock can exceed 150MHz, but I only need it to reach 127MHz.
Whenever I increase the RAM frequency past 2200MHz, the system fails to boot. There are two distinct issues that arise in this situation:
If I set the NB frequency above 1050MHz, the screen remains black and the BIOS doesn't produce any beep sounds at all—not even a single one indicating a successful POST.
On the other hand, if I lower the NB frequency below a certain threshold—even without changing the RAM frequency—I encounter a "Base 64 K RAM failure" message. This usually points to faulty RAM, but reverting the settings resolves the problem. It seems the problematic point is tied to the current RAM speed.
At one point, my system even booted with a 2400MHz RAM speed! But once I powered it down, it failed to POST again.
The main question is: How do the NB frequency and RAM frequency interact? Is there a specific frequency ratio that's necessary for stable operation?
My System Details:
A8-3870k APU
2x4GB Kingston HyperX Predator (qualified for 2400MHz)
MSI A75MA-G55 Motherboard
ASUS 6670HD Graphics card
SilentMAXX fanless II 500W PSU

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E
EzPwnz
Member
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146
04-26-2025, 05:06 PM
#2
are you adding voltage to the ram when you raise the freq? your not saying you are raising the voltage to the ram so im not sure if your trying to do it on not.....you have to raise the ram voltage to 1.65volts if im looking at the correct part online...you would need to post the ram part # for us to know the voltage spec if you dont know it
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E
EzPwnz
04-26-2025, 05:06 PM #2

are you adding voltage to the ram when you raise the freq? your not saying you are raising the voltage to the ram so im not sure if your trying to do it on not.....you have to raise the ram voltage to 1.65volts if im looking at the correct part online...you would need to post the ram part # for us to know the voltage spec if you dont know it

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I
iFlawlyPvP
Junior Member
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33
04-26-2025, 05:06 PM
#3
The voltage is configured at 1,65V according to the XMP and datasheet. I'm curious if this might be a Northbridge problem—would it mean something is faulty or just typical behavior?
I also tested memtest86 on both RAM modules across three slots, and no errors were detected.
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I
iFlawlyPvP
04-26-2025, 05:06 PM #3

The voltage is configured at 1,65V according to the XMP and datasheet. I'm curious if this might be a Northbridge problem—would it mean something is faulty or just typical behavior?
I also tested memtest86 on both RAM modules across three slots, and no errors were detected.

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