![4GB Stick for HP-Compaq Business Desktop Series dc7900 (Ultra Slim). SO-DIMM DDR2 Non-ECC PC2-6400 800MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com 4GB Stick for HP-Compaq Business Desktop Series dc7900 (Ultra Slim). SO-DIMM DDR2 Non-ECC PC2-6400 800MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com](https://m.media-amazon.com/images/I/51On7-bcVjL._AC_UF894,1000_QL80_.jpg)
4GB Stick for HP-Compaq Business Desktop Series dc7900 (Ultra Slim). SO-DIMM DDR2 Non-ECC PC2-6400 800MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com
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100% tested For DC7900 Ultra slim Motherboard 462433 001 460954 001 work perfect|motherboard for compaq laptop|motherboard for toshiba laptopmotherboard with amd processor - AliExpress
![The 3rd and final upgrade to my trusty 15 yr old HP DC7900 ultra slim desktop. With a core 2 duo E8400, 4GB DDR2 and an 80GB 7200rpm hdd (original died, it The 3rd and final upgrade to my trusty 15 yr old HP DC7900 ultra slim desktop. With a core 2 duo E8400, 4GB DDR2 and an 80GB 7200rpm hdd (original died, it](https://external-preview.redd.it/2RRABEYDp-V3wVrPr6WYGKE52CvZyELHcaNU-Qcplno.jpg?auto=webp&s=8503579f455f71113812de9de847037a7a1fda5c)
The 3rd and final upgrade to my trusty 15 yr old HP DC7900 ultra slim desktop. With a core 2 duo E8400, 4GB DDR2 and an 80GB 7200rpm hdd (original died, it
![Specs HP Compaq dc7900 Ultra-slim Desktop PC (ENERGY STAR) E8600 Intel® Core™2 Duo 2 GB DDR2-SDRAM 250 GB Windows Vista Business PCs/Workstations (FS494AW) Specs HP Compaq dc7900 Ultra-slim Desktop PC (ENERGY STAR) E8600 Intel® Core™2 Duo 2 GB DDR2-SDRAM 250 GB Windows Vista Business PCs/Workstations (FS494AW)](https://images.icecat.biz/img/gallery_mediums/img_3155113_medium_1470997443_7638_10692.jpg)
Specs HP Compaq dc7900 Ultra-slim Desktop PC (ENERGY STAR) E8600 Intel® Core™2 Duo 2 GB DDR2-SDRAM 250 GB Windows Vista Business PCs/Workstations (FS494AW)
![CMS 4GB (1X4GB) DDR2 6400 800MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with HP/Compaq® Business Desktop Dc7900 Ultra Slim Desktop - A42 at Amazon.com CMS 4GB (1X4GB) DDR2 6400 800MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with HP/Compaq® Business Desktop Dc7900 Ultra Slim Desktop - A42 at Amazon.com](https://m.media-amazon.com/images/I/61EHK0f0d5L.jpg)
CMS 4GB (1X4GB) DDR2 6400 800MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with HP/Compaq® Business Desktop Dc7900 Ultra Slim Desktop - A42 at Amazon.com
![My latest acquisition, a HP Compaq DC7900 ultra slim. Core 2 duo E8400, 2GB ddr3, 160gb hdd, originally with vista, I downgraded to XP pro SP2 : r/windowsxp My latest acquisition, a HP Compaq DC7900 ultra slim. Core 2 duo E8400, 2GB ddr3, 160gb hdd, originally with vista, I downgraded to XP pro SP2 : r/windowsxp](https://external-preview.redd.it/H-AqTyTDdQxv8NiwSzitwPhStOeK99-_bexWpSNNzUQ.jpg?auto=webp&s=e7ab531d4632690daa3bdd7d4e3fc45e6aa72942)