Member Avatar for WCH1086

I'm trying to rebuild my Dell Dimension 2100 Desktop. I'm very computer illiterate. I want a desktop in addition to my laptop for when I go to college. I'd like for it to be pretty fast, have lots of memory, and be about as good or better as a new computer today. Also I'd like for it to have a DVD burner. I do have a budget of at or around $400.00 to work with. Please help me in my selection, and tell me what things I need to purchase and if possible where to purchase them from.

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WCH1086 asked for a fast, memory-rich Dimension 2100 with a DVD burner on about a $400 budget. Two useful points already posted: is right that the first step is an inventory of what’s actually in the machine, and ’s Dell-upgrade experience highlights a common OEM reality — many older Dell cases and motherboards use nonstandard layouts and connectors that can make major upgrades expensive or awkward.

A practical checklist to decide the next move:

  • Gather system IDs: run Windows System Information (msinfo32) and note CPU model, BIOS version and total RAM.
  • Use a tool like CPU‑Z or look at the labels on the DIMM sticks to identify memory type and speed.
  • Open the powered‑off, unplugged case and note the motherboard model printed on the PCB, count DIMM slots, and inspect expansion slots (AGP/PCI/PCIe). Photograph connectors and labels.
  • Note the optical drive interface (IDE ribbon vs SATA) and the power supply’s wattage and connector types.
  • Back up important data before any hardware work and observe basic anti‑static/safety steps.

Choice summary based on that inventory:

  • Low‑cost, high‑value: add matching RAM modules and install a compatible DVD±RW (or a USB external burner if internal fit is uncertain). These are usually straightforward and stay well under the stated budget.
  • Platform replacement: swapping motherboard+CPU often forces new RAM type, a different case, and sometimes a new PSU. That path frequently exceeds $400 and is why OEM machines sometimes make upgrades impractical.
  • Value option: for a modern, “as good or better” experience, consider a used/refurbished small desktop or a new budget build — more predictable upgrade paths and warranties.

Notes and cautions: mix only compatible DIMMs, check BIOS limits (some older boards cap per‑slot memory), and avoid forcing nonstandard connectors. Providing the motherboard model and clear photos will allow precise part recommendations.

Member Avatar for RGPHNX

Hi WCH1086,
Your going to have to do a little detective work to see what hardware is already installed on your computer & what memory slots are available & what the maximum amount of memory you can load on the motherboard....etc.
The CD/DVD drive & additional memory USUALLY isn't a problem (& is in your budget)
You can see my website for a good overview of memory/RAM issues to help you decide.
Post back here for more help.. if needed.
Good Luck !! :D
RGPHNX

Member Avatar for Devonalper

Good luck with that. I tried to upgrade my Dell 2400 and it was impossible. I had no AGP slots the motherboard wasn't ATX. There was very little potential. You could build a much better comp. from scratch with that price range.

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