The Core i3-10105 is a 4-core, 8-thread Comet Lake processor with a 3.7 GHz base and 4.4 GHz boost, backed by a 6MB cache and Intel UHD Graphics 630. It handles everyday office tasks — email, web browsing, document processing, spreadsheets, and video calls — comfortably. The 8GB DDR4-2666 ships in one of two UDIMM slots, leaving a second slot free for a straightforward capacity upgrade up to 64GB maximum.

Storage, Expansion & Connectivity

Primary storage is a 256GB M.2 PCIe NVMe SSD, supplemented by a DVD-RW optical drive — still useful for businesses that work with optical media. Two SATA ports support the addition of a secondary 3.5″ or 2.5″ HDD or SSD. Expansion includes one PCIe Gen3 x16 slot, one PCIe x16 (wired as x4) slot, and one PCIe x1 slot — all low-profile. Front I/O provides 2x USB 2.0 and a universal audio jack. The rear adds 4x USB 3.2 Gen 1 Type-A, 2x USB 2.0 (Smart Power On), 2x DisplayPort 1.4, and Gigabit Ethernet (RJ-45) — supporting dual monitors from the onboard video outputs. No Wi-Fi is included on the SFF variant; the machine is wired-only unless a Wi-Fi PCIe card is added separately.

Security & Build

Security provisions include a Kensington lock slot, chassis intrusion switch, TPM 2.0, and BIOS-level Smart USB Protection. The compact SFF chassis stands vertically on a desk or can be mounted in a tower orientation.

The OptiPlex 3090 is a 2021-era platform. While it ships with Windows 11 Pro and is fully supported, it is end-of-sale and replacement parts availability will diminish over time. Businesses prioritising long-term serviceability should consider a current-generation Pro Tower or Pro Slim instead.

No Wi-Fi is included on this SFF model. If wireless connectivity is required, a low-profile PCIe Wi-Fi card must be added to one of the expansion slots.

The DVD-RW drive and dual low-profile PCIe x16 slots make this a practical choice for businesses that still work with optical media or need a second expansion card alongside a discrete GPU.

Key Highlights

• Intel Core i3-10105 — 4 cores / 8 threads, up to 4.4 GHz, Intel UHD 630
• 8GB DDR4-2666 — 1 slot free, upgradeable to 64GB
• 256GB M.2 PCIe NVMe SSD — 2x SATA ports for secondary drives
• DVD-RW optical drive included
• 3x low-profile PCIe slots (x16 + x16/x4 + x1)
• 2x DisplayPort 1.4 — dual monitor support
• Gigabit Ethernet (no built-in Wi-Fi)
• TPM 2.0 + Kensington lock
• Windows 11 Pro (64-bit)

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