Replacement for 661FM3-L: Drop-In Alternatives We Stock
Looking for a replacement for the 661FM3-L (661FM3-L - MSI Desktop Board Pentium 4 SiS 661FX LGA775 Socket 2GB DDR SDRAM 266 MHz, 333 MHz)? Pro Disk Network ships drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the 661FM3-L
| SKU | 661FM3-L |
|---|---|
| Product | 661FM3-L - MSI Desktop Board Pentium 4 SiS 661FX LGA775 Socket 2GB DDR SDRAM 266 MHz, 333 MHz |
| Stock status | In Stock |
| Detail page | View 661FM3-L › |
Drop-in replacements for 661FM3-L
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
P4S8X-MX - ASUS SiS 661GX/SiS 964 Chipset Pentium 4/ Celeron Processors Support Socket LGA478 micro-ATX Motherboard
SKU: P4S8X-MX
Price: $326.00
5187-0317 - HP System Board (Motherboard) Socket 478 for Pavilion 7xx Series SIS Desktop
SKU: 5187-0317
Price: $205.26
K8S-MX - ASUS Asus K8S-MX Desktop Motherboard SiS Chipset Socket PGA-754 1 x Processor Support 2 GB Floppy Controller Serial ATA/150 Ultra ATA
SKU: K8S-MX
Price: $282.20
P4P800 SE - ASUSTeK Desktop Board Pentium 4 (Extreme Edition), Pentium 4, Celeron, Celeron-D Intel 865PE MCH Socket 478 4GB DDR SDRAM 400 MHz, 333 MHz, 266 MHz ATX
SKU: P4P800-SE
Price: $552.63
D201GLY2 - Intel SIS SIS662 Micro ATX ESSENTIAL Series Desktop Motherboard
SKU: D201GLY2
Price: $235.79
P4S800-MX - ASUS Socket 478 P4/Celeron Motherboard max 3.06GHz+ SIS 661FX/963L
SKU: P4S800-MX
Price: $239.47
MSI-710G2H - MSI Nvidia GeForce GT 710 2GB DDR3 64-Bit VGA/ Dual Link DVI-D/ HDMI PCI Express 2.0 x16 Video Graphics Card
SKU: MSI-710G2H
Price: $114.37
MSI-7302GV - MSI Nvidia GeForce GT 730 2GB DDR3 128-Bit VGA/ Dual Link DVI-I/ HDMI PCI Express 2.0 x16 Video Graphics Card
SKU: MSI-7302GV
Price: $146.30
MSI-3602GO - MSI AMD Radeon R7 360 OC 2GB GDDR5 DVI/HDMI/DisplayPort PCI Express Video Graphics Card
SKU: MSI-3602GO
Price: $219.68
MSI MSI-N660-2GD5/OC Nvidia GTX660 2GB PCI Express 3.0 2x DVI HDm Video Graphics Card
SKU: MSI-N660-2GD5-OC
Price: $244.03
MSI-960-GM - MSI Nvidia GeForce GTX 960 Gaming 2GB GDDR5 DVI/HDMI/3x DisplayPort PCI Express Video Graphics Card
SKU: MSI-960-GM
Price: $382.83
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.