Head-to-head · Best Dual Monitor Arms

Ergotron HX Dual vs Ergotron LX Dual

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Ergotron LX Dual comes out ahead by a narrow margin (4.6 vs 4.7). The gap is mostly about Professionals running two monitors up to 27 inches who want the most stable, smoothest-adjusting arm and a long warranty. — read the strengths below before deciding.

Ranked #2 in Best Dual Monitor Arms

Ergotron HX Dual

4.6

$539as of Jun 7

The Ergotron HX Dual is the heavy-duty choice: a premium arm built to carry large, heavy monitors and ultrawides that would overload a standard LX. Reviewers praise its top-notch materials, finish, and engineering, with a 10-year warranty to match. It is the most expensive arm here and overkill for light setups, and reviewers note a touch of wiggle in the mounts, but for big-screen, high-mass dual configurations it is the most capable option.

Strengths

— Heavy-duty design supports large, heavy monitors and ultrawides
— Even nicer finish and materials than the standard LX, per reviewers
— Handles substantially more weight per arm than the LX Dual

Watch-outs

— Most expensive arm in this group by a wide margin
— Reviewers note slight wiggle between the monitor mounts and arms
— Vertical stroke may be short for very tall users

$539 · Check Price on Amazon Full review →

Higher ratedRanked #1 in Best Dual Monitor Arms

Ergotron LX Dual

4.7

$489as of Jun 7

The Ergotron LX Dual is the gold standard for dual monitor arms. Its all-aluminum build and patented Constant Force motion deliver the smoothest adjustment and the most rock-solid stability of any arm in this group, backed by a 10-year warranty. Reviewers across PCWorld, Work While Walking, and BTOD treat it as the benchmark. It costs more than budget steel stands and caps at about 20 lbs per arm, but for everyday dual-27-inch setups it is the most reliable choice.

Strengths

— All-aluminum construction is the most stable arm reviewers have tested
— Patented Constant Force (CF) motion needs no knobs or levers to adjust
— Each arm independently lifts, tilts, pans, and rotates two displays up to 27 inches

Watch-outs

— Per-monitor weight tops out around 20 lbs, less than the heavy-duty HX
— Limited vertical range can be short for very tall standing-desk users
— Premium price relative to budget steel-pole stands

$489 · Check Price on Amazon Full review →

How they stack up

Ergotron HX Dual

The HX Dual is the heavy-duty step up from the Ergotron LX Dual, carrying far more weight per arm and handling larger monitors and ultrawides that would exceed the LX's rating. It is markedly pricier than the LX Dual, HUANUO DS12, Monoprice Workstream Dual, and VIVO STAND-V002, and is overkill for the standard dual-27-inch setups those arms target.

Ergotron LX Dual

The LX Dual is the build-quality benchmark in this group, more refined and stable than the budget VIVO STAND-V002 and Monoprice Workstream Dual, and rivaled only by its heavier-duty sibling, the Ergotron HX Dual. Where the HX Dual handles heavier and larger monitors, the LX Dual is the better fit for standard dual-27-inch setups, and the HUANUO DS12 undercuts it on price while approaching its metal build.

Specs side-by-side

Spec	Ergotron HX Dual	Ergotron LX Dual
Construction	Aluminum + steel	Aluminum
Weight Capacity	10-35 lb per arm	7-20 lb per arm
Monitor Size	Up to 32" each	Up to 27" each
Motion	Full lift, tilt, pan, rotate	Constant Force (lift, tilt, pan, rotate)
Design	Heavy-duty single pole	—
Mount	C-clamp / grommet options	C-clamp + grommet
Finish	Black, white, polished aluminum	—
Warranty	10 years	10 years
Extension	—	Up to 25"
Lift Range	—	Up to 13"

← See the full ranking of best dual monitor arms