Upgrade your desktop's performance with the Crucial 4GB memory kit, consisting of two 2GB DDR1 SDRAM modules. Engineered for reliable performance, these DIMM form factor sticks feature a total capacity of 4GB with a speed of PC2-6400, ensuring your applications run smoothly and efficiently. Each module is designed with 184 pins and operates without a buffer, providing a straightforward upgrade path for your system. The model HY5DU12822CTP-D43 is compatible with a variety of motherboards supporting DDR1 memory, making this set a versatile choice for enhancing your computer's performance.Combined Shipping is available and encouraged and please let me know if you have any questions. Thanks for looking