Size:1GB STICK (800MHz) 1GB STICK DIMM DDR2 NON-ECC PC2-6400 800MHz For HP-Compaq HP Presario Desktop. Designed For HP-Compaq HP Presario Desktop: SR5780AP, SR5780D, SR5780HK, SR5780KL, SR5790AN, SR5790AP, SR5790D, SR5807C, SR5810LA, SR5816F, SR5820AN, SR5830AN, SR5837CX, SR5840AN, SR5859HK, SR5860AN, SR5880D, SR5890AN, SR5890D, SR5908F, SV7130KR, SV7350KR, SV7550KR. Will also work with many other brands and models. Genuine Brand: A-Tech is one of the most trusted names in Premium Memory. Backed by a Lifetime Warranty and 5 star customer support, A-Tech has you covered! Memory upgrades have never been easier. Designed specifically to help your computer run faster and smoother, an A-Tech memory upgrade is one of the fastest, most affordable, and easiest ways to improve system performance. A-Tech memory empowers your computer to achieve faster application loading times, faster system responsiveness, and increased ability to multitask and handle data-intensive programs. A-Tech modules are rigorously tested to ensure that your memory meets our stringent compatibility and performance standards. Every A-Tech ram module is tested for complete functionality before it leaves our doors and includes toll free technical support at 1-866-557-4527. Give your computer the best, trust A-Tech! Similar to 1GB