you may upgrade to core 2 quad if current cpu is c2duo. A common c2 quad seen in this model is Q8200.  But the gain from c2D E8500 to Q8200 is slight. better cpu upgrade is Q9400 etc. [URL] 2x4gb is possible. 4GB desktop non ECC unbuffered ddr2-6400, 800 MHz [URL] [URL]
Hello I  have dug out my  XPS One A2420, just wondering if i can put in 2 x 4GB RAM? I hear max is 4 (2 x 2GB modules) but some say can put up to 8GB? Other than the RAM and SSD are there any other upgrades recommended? e.g CPU. Thanks in advance.
XPS One A2420, upgrades RAM, SSD, CPU?