Check your cooler's RAM clearance spec first.

It depends on your cooler, but most dual-tower coolers require low-profile RAM or you’ll have to move the front fan up.

Here’s the deal: CPU air coolers that overhang the RAM slots (like a Noctua NH-D15 or Dark Rock Pro 4) have a published “RAM clearance” number. That’s the tallest RAM they’ll fit under the front fan without moving it. If your RAM is taller than that, you’ve got two options: get low-profile RAM (usually under 32mm) or raise the front fan a few millimeters. Raising the fan works, but it adds height—might not fit in your case.

Single-tower coolers (like a Hyper 212) usually don’t overhang the RAM at all, so clearance isn’t an issue. And some motherboards have the first RAM slot offset inward, which helps. But don’t guess—check your cooler’s specs against your RAM’s height (listed on the product page or measure with a ruler). If you’re building from scratch and want zero drama, just buy low-profile RAM with a big cooler. It’s not sexy, but it fits.

Measure twice, buy once.