Intel
Intel Core i3-2120
Sandy Bridge's entry Core chip: two cores with Hyper-Threading locked at a flat 3.3 GHz, built for office desktops that never needed turbo. In 2026 it is a salvage part you inherit with a used LGA1155 board, not something to build around.
Pros
- Hyper-Threading gives four threads, so it stays usable under light multitasking where a same-era dual-core Pentium stalls
- Fixed 3.3 GHz with no turbo state — power draw and cooling are utterly predictable at 65 W
- HD Graphics 2000 includes Quick Sync Video, so basic H.264 transcoding works without a discrete card
- Drops into essentially any 6-series board (H61/H67/P67/Z68) — the widest, cheapest used motherboard pool of the era
- Retail boxes shipped with a stock cooler, and used units cost single-digit dollars
Cons
- Two cores and four threads is below the floor for modern browsers, background telemetry and any current game
- No turbo and a locked multiplier — 3.3 GHz is the hard ceiling
- Sandy Bridge is PCIe 2.0 only and tops out at DDR3-1333, halving link bandwidth to a modern GPU and NVMe drive
- No AVX2 and no official Windows 11 support (Intel's supported list starts at 8th gen)
Below average
Computed from specs & benchmarks via our public methodology.
Full specifications
Everything we track for the Intel Core i3-2120
General
- Announced
- 2011
- Socket
- LGA1155
- Process
- 32 nm
- Base TDP
- 65 W
- Unlocked multiplier
- No
- Cooler included
- Yes
Cores & Clocks
- Cores
- 2
- Performance cores
- 2
- Efficiency cores
- 0
- Threads
- 4
- Base clock
- 3.3 GHz
- Boost clock
- 3.3 GHz
- L2 cache
- 1 MB
- L3 cache
- 3 MB
Integrated GPU
- iGPU
- Intel HD Graphics 2000
- iGPU clock
- 1,100 MHz
Memory
- Memory support
- DDR3-1333
- Max memory
- 32 GB
- Memory channels
- 2
Platform
- PCIe version
- 2
- CPU PCIe lanes
- 16
Benchmarks
- Geekbench 6 (single)
- 780
- Geekbench 6 (multi)
- 1,600
- PassMark
- 2,400
Quick answers
Is the Intel Core i3-2120 good in 2026?
The Intel Core i3-2120 earns an Inno Score of 20/100 (“Below average”) based on its specs and benchmark results. Sandy Bridge's entry Core chip: two cores with Hyper-Threading locked at a flat 3.3 GHz, built for office desktops that never needed turbo. In 2026 it is a salvage part you inherit with a used LGA1155 board, not something to build around.
What are the key specs of the Intel Core i3-2120?
Cores: 2 · Threads: 4 · Boost clock: 3.3 GHz · Socket: LGA1155
What are the closest alternatives to the Intel Core i3-2120?
Its closest rivals on InnoReviews are Intel Core i3-3220, AMD Ryzen 3 1200, Intel Core i5-3470 — open the comparison pages for a spec-by-spec breakdown.