RAM 3200 Issue with B660 Gaming X
epango Posted messages 37195 Registration date Status Member Last intervention -
It has been a week since I built my PC, and I recovered some components from the old one to build the new one. I switched to an i3 12100f and a Gigabyte b660 gaming x. The problem is that I initially wanted to keep my old Corsair Vengeance 3000 RAM sticks, which were limited to 2793MHz, and upon closer inspection, I found that this processor simply isn’t compatible. Therefore, I got Vengeance RGB 3200, but the XMP keeps them at 2133, and the PC simply won’t boot when I manually increase them.
I request your help please
9 answers
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He didn't buy just anything. He bought a CPU and a motherboard designed to work together. He has RAM sticks that should work with the set at their nominal frequency of 3200MHz. We need to look for the reason why the RAM is stuck at 2133MHz. The motherboard may have 2 XMP profiles. If that's the case, he should try the second one.
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XMP profiles are included in the SPD chip of the RAM sticks; assuming that the BIOS does not see everything, it means it cannot support it. In DDR4, the standard is XMP 2.0, with two profiles, one automatic and one manual for the user. Obviously, his kit is not 100% compatible, as is often the case with this awkward choice of using a DDR4 motherboard with this generation of CPU... and personally, I find it a shame to put an i3 on a motherboard that costs 180 euros...
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flo88 Posted messages 28490 Registration date Status Contributor Last intervention Ambassadeur 5 169
Hello
Where do you see the actual frequency of your RAM?
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Euskadi Ta Askatasuna -
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flo88 Posted messages 28490 Registration date Status Contributor Last intervention Ambassadeur 5 169
Hello
These processors are designed to operate with DDR5, although they are compatible with DDR4, it should be avoided as the compatibilities are more limited. Many users encounter problems in this scenario.
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The majority of people who have 12th generation Intel CPUs are using motherboards that only support DDR4, as motherboards supporting DDR5 and DDR5 RAM are too expensive. Perhaps a BIOS update could solve the problem.
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The memory controller integrated into the i3 12100F is supposed to handle DDR4 frequencies automatically up to 3200MHz, and the Gigabyte B660 GAMING X DDR4 motherboard supports DDR4 up to 4400MHz via overclocking. Even though it's hard to achieve that extreme frequency stably, it should have managed to run at 3200MHz. If it remains stuck at 2133MHz, while others with motherboards driven by a B660 chipset are achieving that, it indicates an anomaly with either the motherboard or the RAM modules. Perhaps the BIOS is not up to date. This cannot be explained by the fact that it's DDR4 RAM and not DDR5.
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"I personally think it's a shame to put an i3 on a motherboard that costs 180 euros..."
It can allow him to put a more powerful CPU from the same generation later on.
In any case, things have always been this way; when transitioning from one DDR generation to the next, the first CPUs usually have a memory controller that manages both the current generation and the upcoming generation. Thus, the memory controller in 6th generation CPUs could handle both DDR3 and DDR4. This helps avoid a too abrupt cutoff.
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I had the same problem which I solved through the BIOS by activating XMP and then selecting my RAM in the list right below, the closest option. To explain, for example, my RAM is 3600, in the list I set it to 3200 because at 3600 I would reboot, but at 3200 my XMP profile passed...
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Perhaps a BIOS update would improve things. For version F20 of the BIOS, it is stated, among other things, Improve DDR compatibility here.
