In other words, can I just go to Fry's and but 1 gig of ram and add it to what I already have? Or do I need to take out the old 1 gig of ram I have and just install a 2 gig module? Thanks!
the results should give you a better idea, else post link after scan & i can tell you best possibilities
DELL XPS 630i motherboard,with 8gig Ram,and heatsink,and 2.8Ghz processor, Combo, 1GB Memory U8622 Compatible with Dell Dimension XPS M200s 240pin RAM DDR2 DIMM, DELL XPS 410 - XP Media Center Intel Core2 6600 2.4 GHz 2 GB RAM 250 GB HD 2 DVD, NEW Dell XPS 15+1080P+i7-2670QM+2.2GHz+8GB Ram+750GB HDD+NVIDIA GT 525+Backlit , DELL XPS M1530 LAPTOP INTEL DUO CORD 2.0 CPU, 3G RAM, 160G HD, WIN7 ULTIMATE , Dell XPS 720 Core 2 Extreme 3.0GHz 8GB RAM 750GB HDD 750MB nVidia 460GTX Fermi, Dell Dimension XPS R350 Motherboard Pull From Working PC With Pentium II +RAM, 8 GB (4 x 2 GB) DDR3 RAM DIMM PC3-10600 Dell XPS 8300, Dell XPS Studio 435T 2.67Ghz i7-920 Intel 8GB Ram 640GB HD Wireless Card DVD, 370-13757 4GB RAM Compatible with Dell Studio XPS 1340 1640 204pin Upgrade, DELL XPS D266 MOTHERBOARD with SL2S5 333/512/100 CPU 384MB RAM **TESTED**, Dell XPS 410 Computer Desktop With 24" LCD, 1.0 TB Hard Drive 4 GB Ram, 1GB RAM Compatible with Dell Dimension XPS 720 240pin Memory A1189544 DDR2 DIMM, 1GB Memory Compatible with Dell Dimension XPS 600 Upgrade DDR2 DIMM RAM 240pin, U8622 1GB RAM for Dell Dimension XPS 700 M200s 240pin Upgrade Memory DDR2 DIMM, Dell XPS M140 Inspiron 630m laptop DVD+RW 1GB RAM 60GB WORKING needs small repr, Dell XPS 17 Notebook (L701X) i7-740QM 1.73GHz, 8GB RAM, Nvidia GT445M 3GB, Dell Inspiron 9200 9300 XPS M170 RAM Memory Cover Panel Door D5934 CN-0D5934, DELL XPS M1730 2.8GHZ CORE 2 DUO EXTREME LAPTOP 8GB-RAM 500GB WINDOWS 7 MINT!, Dell XPS L702X Laptop PC - 8 GB RAM, 2x 500 GB HDs, Core i7, Very Good Condition, Dell Xps 9100 12GB Ram 3TB Hard Drive, ★Dell XPS M1530★ Intel Core 2 Duo T8300 2.4GHz 4GB RAM 320GB HHD Notebook★, Dell XPS M1330 Laptop, 2.0Ghz 4MB L2 CPU, 2GB RAM, 250GB Hard Drive, DVD+RW, 4GB 2x2GB RAM Compatible with Dell Dimension XPS Gen5 400 ECC DDR2 UDIMM Memory, 1GB RAM A1189544 for Dell Dimension XPS 720 H2C 240pin Memory DDR2 DIMM New, 256MB Memory Compatible with Dell Dimension XPS B Rambus RDRAM RIMM Upgrade RAM, 1GB Memory for Dell Dimension XPS Gen4 600 240pin RAM DDR2 DIMM New, 1GB A0740460 Memory RAM Compatible with Dell Dimension XPS Gen 184pin DDR DIMM, 4GB 240pin Compatible with Dell XPS 8300 Upgrade Memory RAM DDR3 DIMM New, 2GB RAM Compatible with Dell XPS 730 240pin Upgrade Memory DDR3 DIMM New, 1GB 240pin for Dell XPS One RAM A2315690 Memory DDR2 DIMM New, 1GB Memory Compatible with Dell XPS 420 420 210 630 DDR2 DIMM RAM 240pin New, 2GB RAM A2463645 Compatible with Dell XPS 630i 410N 625 Upgrade DDR2 DIMM Memory, 2GB DDR2 DIMM for Dell XPS 700 One RAM Memory 240pin New, 2GB 240pin Compatible with Dell XPS 600 410 700 Upgrade Memory RAM DDR2 DIMM New, 2GB Memory RAM Compatible with Dell XPS 400 600 700 240pin DDR2 DIMM New, 1GB RAM for Dell XPS 200 420 DXC051 240pin Memory DDR2 DIMM New, Dell XPS L702X Notebook Core i5 2.3 GHz with Turbo Boost 4 GB Ram 500GB HD - EX, NIB DELL XPS 15z (X15z-7093ELS) Intel Core i5 2.4GHz, 6GB RAM, 2GB GT 525M, 2GB PC3200 (1GB x 2) DELL DIMENSION B110 XPS GEN 2 (G2) MEMORY RAM, Dell XPS17 L702X 17.3" i7-2670QM 750B 3D Glasses 1080p 16GB RAM Laptop **LOOK**, Dell XPS 630i Gaming Computer Core 2 Duo 3.16Ghz 8 GB Ram, Mint Dell XPS M1330 Laptop Notebook Intel Core 2 Duo 2.2ghz 4gb Ram Gaming, Dell XPS M1530, Gaming Laptop, 2.2ghz, 128mg Nvidia, 2gig ram, 2GB 2x1GB Memory Compatible with Dell Dimension XPS XPSGEN5 240pin RAM ECC DDR2, 4GB 2x2GB RAM for Dell Dimension XPS XPSGEN5 Gen5 400 240pin Memory ECC DDR2, A1189544 1GB Memory Upgrade RAM for Dell Dimension XPS 200 720 DDR2 DIMM 240pin, 2GB RAM Compatible with Dell Dimension XPS 400 240pin Upgrade Memory DDR2 DIMM, 2GB RAM Compatible with Dell Dimension XPS Gen5 M1210 M1710 240pin Memory DDR2, 2GB RAM Compatible with Dell Dimension XPS Gen 710 H2C 240pin Memory DDR2 DIMM,