I'm new to building PCs and while I was cleaning and installing some new parts, I noticed three SSD slots on my motherboard: M2A_CPU, M2P_CPU, and M2C_SB. I'm curious about the differences between these slots, and I couldn't find much info online. Can anyone explain how they differ, and if there's a specific order or preference when using them?
5 Answers
To simplify: CPU slots are your fast options—use them for main drives. SB (south bridge) is slower, so that's for extra storage only. If you have multiple SSDs, definitely prioritize the CPU slots!
Just go with the slot closest to your CPU for the best performance. Each motherboard can differ, so definitely check your motherboard's manual for the specific details.
Always a good idea to read your motherboard manual. It usually outlines the priority for slots and any potential issues with disabling certain PCIe lanes when using specific slots.
Think of it this way: M2A_CPU is the top choice for your main SSD since it has direct CPU lanes. M2P_CPU is also good for fast SSDs, while M2C_SB is linked to the chipset and is great for additional storage but won't be as fast.
The M2A_CPU and M2P_CPU slots connect directly to your CPU, which generally means they're faster and better for your main SSD. The M2C_SB, on the other hand, is connected to the chipset and might be slower, so it's better for extra storage rather than your primary drive.
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