F5F Stay Refreshed Hardware Desktop Need assistance with a computer that doesn't reach maximum RAM performance.

Need assistance with a computer that doesn't reach maximum RAM performance.

Need assistance with a computer that doesn't reach maximum RAM performance.

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BGStacks
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160
03-10-2025, 03:06 AM
#1
I've encountered a problem where putting my computer to sleep and then waking it up makes the RAM behave slower than expected. When I check in BIOS, the settings stay unchanged. The only solution I've tried is adjusting the RAM speeds directly in BIOS, changing the load windows, restarting, and then setting the preferred speeds. After fixing it, I stopped using sleep mode and it worked better. To avoid this now, I shut down the PC completely instead of putting it to sleep. This issue has been puzzling me; even after replacing both RAM modules, it persists. I've looked online but found nothing relevant. My system specs are: motherboard MSI PRO Z790, CPU Intel i9 14900K, Corsair Vengeance RGB DDR5 64GB (2x32) at 6400MHz, 850W PSU, and a 4080 GPU.
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B
BGStacks
03-10-2025, 03:06 AM #1

I've encountered a problem where putting my computer to sleep and then waking it up makes the RAM behave slower than expected. When I check in BIOS, the settings stay unchanged. The only solution I've tried is adjusting the RAM speeds directly in BIOS, changing the load windows, restarting, and then setting the preferred speeds. After fixing it, I stopped using sleep mode and it worked better. To avoid this now, I shut down the PC completely instead of putting it to sleep. This issue has been puzzling me; even after replacing both RAM modules, it persists. I've looked online but found nothing relevant. My system specs are: motherboard MSI PRO Z790, CPU Intel i9 14900K, Corsair Vengeance RGB DDR5 64GB (2x32) at 6400MHz, 850W PSU, and a 4080 GPU.

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Kaisetsu
Senior Member
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651
03-10-2025, 03:06 AM
#2
It seems there were problems before the microcode upgrade. That would mean the previous IMC worked without issues.
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Kaisetsu
03-10-2025, 03:06 AM #2

It seems there were problems before the microcode upgrade. That would mean the previous IMC worked without issues.

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Kev67824
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03-10-2025, 03:06 AM
#3
This set could be too quick; there are 14900Ks that won't function (my 13900K is one of them). A 6400 with dual rank memory works on most chips, though some exceptions exist. Considering the problem you mentioned, I'm skeptical but thought it worth noting. What tools are you using to verify RAM speed? To determine if the issue lies here or elsewhere? This shouldn't occur unless a BIOS setting is enabled, as memory needs a full reset to adjust frequency. Changing the frequency isn't possible just through sleep. If you need to test that setting, look for it in the BIOS—usually under Advanced mode, Advanced memory settings, and within the OC tab. It should appear among the first few options. Also, while RAM speed matters, performance differences are usually minor and often software-related.
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Kev67824
03-10-2025, 03:06 AM #3

This set could be too quick; there are 14900Ks that won't function (my 13900K is one of them). A 6400 with dual rank memory works on most chips, though some exceptions exist. Considering the problem you mentioned, I'm skeptical but thought it worth noting. What tools are you using to verify RAM speed? To determine if the issue lies here or elsewhere? This shouldn't occur unless a BIOS setting is enabled, as memory needs a full reset to adjust frequency. Changing the frequency isn't possible just through sleep. If you need to test that setting, look for it in the BIOS—usually under Advanced mode, Advanced memory settings, and within the OC tab. It should appear among the first few options. Also, while RAM speed matters, performance differences are usually minor and often software-related.

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