help with XMP

[AELIS17]

Hi, I'm trying to use XMP and Increase my RAM(1x8GB GSKILL AEGIS 3000MHz / F4-3000C16S-8GISB)  frequency to 2666MHz(I'm using i3 9100F and ASUS PRIME H310M-A R2.0). currently it's 2133MHz without XMP enabled so i used profile #1 and i got this before save & quit BIOS:

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Ai Overclock Tuner [Auto] -> [XMP]

DRAM Frequency [Auto] -> [DDR4-2400MHz]

DRAM voltage [Auto] -> [1.35V]

DRAM CAS# LATENCY [Auto] -> [16]

DRAM RAS# to CAS# Delay [Auto] -> [18]

DRAM RAS# to CAS# Delay [Auto] - >[38]

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Also I'm using an old gpu currently until i get a new one next month, it's nvidia 9500 GT and my i have 550W psu (it's not known in US but i'm sure about it's good quality)

Can you guys tell me Why XMP auto is giving me 2400MHz instead of 2666MHz?

someone said your RAM is unstable(how can it be unstable? because of old or maybe bad gpu?)

I really don't want to even change to 2400MHz if it wants to crash in games/ under heavy usage.

[AELIS17]

2 minutes ago, Caroline said:

Don't use presets

Disable auto OC features (Auto AI/easy tune, etc)

Set the frequency and timings manually (3000, 18-18-40)

is it safe?

[homeap5]

XMP Gives you 2400 because of your motherboard and your cpu supports 2400 MHz memory.

https://www.intel.pl/content/www/pl/pl/products/processors/core/i3-processors/i3-9100.html

 

 

[AELIS17]

6 minutes ago, homeap5 said:

XMP Gives you 2400 because of your motherboard and your cpu supports 2400 MHz memory.

https://www.intel.pl/content/www/pl/pl/products/processors/core/i3-processors/i3-9100.html

 

 

That means even if i manually OC to 2666 MHz i can only get 2400MHz?