The advantages of 1366-E Retention Modules are to ensure that the Extreme-X/ Ultra-X is mounted securely on Intel LGA 1366 platforms. It has the same 4 mounting points as the Intel socket 775 style, thereby providing better contact with the CPU and cooler. This gives LGA1366 platform users more flexibility to adjust the air flow for achieving the best cooling performance. Caution! 1366-E Retention modules are designed to be used with Enzotech Products "only"!