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Head-to-head · Best Dual Monitor Arms

Ergotron LX Dual vs MSI MAG MT201D Dual Monitor Arm

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

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The short answer

MSI MAG MT201D Dual Monitor Arm comes out ahead by a clear margin (4.9 vs 4.4). MSI MAG MT201D Dual Monitor Arm is best for: Owners of large or ultrawide monitors who want a high-capacity dual arm with a 3-year warranty and have space behind the desk. Read the strengths below before deciding.

Ergotron LX Dual
Ranked #3 in Best Dual Monitor Arms
Ergotron LX Dual
1 sourceall derived$327.79as of Sep 25

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 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
  • — Each arm independently lifts, tilts, pans, and rotates two displays up to 27 inches
  • — 25 inches of extension and 360-degree rotation for flexible positioning
  • — Industry-leading 10-year warranty covering the tension system
Watch-outs
  • — Limited vertical range can be short for very tall standing-desk users
  • — Premium price relative to budget steel-pole stands
  • — Side-by-side layout suits up to 27-inch monitors, not large ultrawides
$327.79 · Check Price on AmazonFull review →
MSI MAG MT201D Dual Monitor Arm
Higher ratedRanked #1 in Best Dual Monitor Arms
MSI MAG MT201D Dual Monitor Arm
1 source$125.99as of Oct 16

The MSI MAG MT201D is a spring-assisted dual arm rated for two monitors up to 45 inches and 44.09 pounds each. Windows Central bought one for its own office, ran a 34-inch ultrawide and a 27-inch 4K monitor on it, and gave it 5 out of 5, calling it "the sturdiest, most versatile, and easiest to assemble monitor mount" its reviewer had used. The catches it found: the arms need room behind the desk to work, and the desk must be at least 10mm thick.

Strengths
  • — Windows Central rated it 5 out of 5 and called it the sturdiest, most versatile and easiest to assemble mount its reviewer had used
  • — Supports two monitors up to 45 inches and 44.09 pounds each, per Windows Central's spec table
  • — Windows Central had it assembled with both monitors attached within 45 minutes
Watch-outs
  • — Windows Central found the arms need space behind the desk; its reviewer pulled the desk about a foot from the wall
  • — Requires a desktop between 10mm and 35mm thick; Windows Central recommends a solid desk
  • — No RGB lighting (that is the pricier MPG MT201DR)
$125.99 · Check Price on AmazonFull review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

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 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.

MSI MAG MT201D Dual Monitor Arm

Its 44.09-pound per-arm rating and 45-inch screen limit, from Windows Central's spec table, are higher than the Ergotron HX Dual's 10-35 lb and 32-inch limits, the Ergotron LX Dual's 7-20 lb and 27-inch limits, and the VIVO STAND-V002's 22 lb. Its warranty is 3 years against 10 years on both Ergotron arms. Unlike the VIVO, which is screw-tensioned with no spring, each MT201D arm has a built-in spring with adjustable tension.

Specs side-by-side

SpecErgotron LX DualMSI MAG MT201D Dual Monitor Arm
ConstructionAluminum—
Weight Capacity7-20 lb per arm44.09 lb per arm
Monitor SizeUp to 27" eachUp to 45" each
MotionConstant Force (lift, tilt, pan, rotate)—
ExtensionUp to 25"—
Lift RangeUp to 13"—
MountC-clamp + grommetC-clamp or grommet
Warranty10 years3 years
MaterialMetal—
VESA—75x75 / 100x100
Tilt—20 to 50 degrees
Swivel—90 to 90 degrees
Pivot—180 to 180 degrees
Vertical Extension—Up to 20"
Horizontal Extension—Up to 21.46"
Adjustment—Spring arms with Allen-key tension adjustment
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