A monitor arm is one of the cheapest ergonomic upgrades that delivers the biggest impact for your workspace setup. Instead of leaving your monitor on its bulky stand, a monitor arm lets you suspend it in the air, adjusting height, tilt, and distance flexibly — reducing neck and back strain while freeing up desk space.

However, not all monitor arms are the same. With different VESA standards, weight capacities, and clamping mechanisms, choosing the right arm for your monitor is crucial. This article will help you understand all the key specs.

What to Know Before Buying a Monitor Arm

The three most important factors: weight capacity, VESA standard, and mount type.

Weight capacity is the maximum load the arm can support. Most single arms support 2-9kg, dual arms support 2-8kg per side. Always choose an arm with a capacity at least 1-2kg higher than your monitor's weight for safety and stability.

VESA standard — most monitors have VESA mounting holes on the back in 75×75mm or 100×100mm sizes. Some small or curved monitors use VESA 75×75. Check your monitor before buying.

Mount type comes in three varieties: C-clamp (most stable), grommet mount (for desks with pre-drilled holes), and free-standing (no clamp needed but takes up desk space). C-clamp is the best choice for most users.

Key Technical Specs

Spec	Description	Recommendation
Max weight capacity	2-20kg depending on type	2kg above monitor weight for safety
VESA standard	75×75mm, 100×100mm	100×100mm is most common
Mount type	C-clamp, grommet, free-standing	C-clamp for highest stability
Reach	Distance from pole to monitor	200-600mm depending on needs
Height adjustment	Usually 200-400mm	Gas spring for easy adjustment
Rotation/tilt	360° rotation, -45°/+90° tilt, portrait rotation	Full rotation/tilt/portrait
Number of arms	Single, dual, triple	Dual for 2 monitors is a common setup
Material	Aluminum, steel, ABS plastic	Aluminum + steel for durability

Types of Monitor Arms

Single Monitor Arm

Suitable for single monitor setups. Easy to adjust, clean, and affordable. Popular with office workers. Examples: Ergotron LX Single, North Bayou F80, Wali Single.

Dual Monitor Arm

For 2 monitors — ideal for programmers, traders, and editors. Can place monitors side-by-side or stacked vertically. Needs a sturdy clamp due to double the weight. Examples: Ergotron LX Dual, Humanscale M8.1, Atdec Visidev.

Triple Monitor Arm

For 3 monitors. Professional setup — traders, sim racing gamers. Requires a thick and sturdy desk. Examples: Ergotron LX Triple, Atdec TH-1200.

Heavy Duty Arm

For ultrawide monitors (34-49 inch), heavy curved displays. Weight capacity up to 15-20kg. Examples: Ergotron HX, Humanscale M8.1 HD.

Fixed Arm

No gas spring, cheaper but harder to adjust. Suitable for secondary monitors or when you've already determined a fixed position. Examples: North Bayou F100, VideoSecu ML531B.

Price Tiers

Tier	Price	Features	Examples
Basic	$10 - $25	Fixed joints, low weight capacity (<5kg), plastic	Wali Single, North Bayou F100, Huanuo Single
Mid Range	$25 - $70	Gas spring, aluminum, 2-8kg capacity, full-featured	North Bayou F80, Huanuo Dual, Wali Dual
High End	$70 - $180	High-quality gas spring, aluminum/steel, 5-12kg capacity	Loctek D7L/D8L, Atdec Visidev, Fully Jarvis
Flagship	$180+	Ergotron/Humanscale, built to last forever, 10-20kg capacity	Ergotron LX/HX, Humanscale M8.1, Atdec TH

Top Brands

Brand	Known For	Segment
Ergotron	The gold standard in monitor arms — LX and HX are legendary, 10-year warranty	High End - Flagship
Humanscale	Beautiful design, peak ergonomics, 15-year warranty	Flagship
North Bayou	Best value in gas spring category, very popular in Vietnam	Basic - Mid Range
Loctek	Good quality, sturdy, suitable for heavy monitors	Mid Range - High End
Atdec	Modular, flexible for multiple monitors, professional grade	High End - Flagship
Wali	Affordable, diverse range, suitable for basic setups	Basic - Mid Range

Comparison with Other Options

Monitor Arm vs Stock Stand

The stock stand is free, stable, and requires no installation. However, it takes up a lot of desk space, offers limited adjustment, and can't raise the monitor to eye level. A monitor arm frees up desk space, improves sitting posture, and lets you easily switch from sitting to standing (if you have a standing desk).

Monitor Arm vs Monitor Riser

A monitor riser (wood or plastic) is cheaper and provides extra storage underneath. But the height is fixed, you can't adjust tilt or rotation, and it doesn't free up space under the monitor. A monitor arm is far more flexible.

Gas Spring Arm vs Fixed Arm

Gas spring arms are more expensive but allow easy one-handed adjustment, making it simple to change your working posture frequently. Fixed arms are cheaper but require loosening screws every time you want to adjust. If you sit at your desk for 8 hours a day, a gas spring arm is worth the investment.

Common Mistakes When Buying

• Not checking VESA compatibility — Some monitors (especially older or budget models) don't have VESA holes. You'll need a VESA adapter, which adds thickness and may be unstable.
• Forgetting about weight capacity — Cheap monitor arms usually max out at 4-5kg. A 27-28 inch monitor can weigh 5-7kg. Always check before buying.
• Clamp doesn't suit your desk — Glass desks or thin desks (under 10mm) aren't suitable for C-clamps. You'll need a protective pad or a free-standing base. Thick desks over 60mm also won't fit standard clamps.
• Buying a cheap arm for an ultrawide monitor — A 34-inch curved monitor can weigh 8-12kg. A cheap arm will sag or fail to lift. You need a heavy duty arm.
• Not accounting for ceiling height — If your desk is against the wall or has a shelf above, a tall monitor arm may not fit.
• Installing incorrectly — Loosen the gas spring screws before mounting the monitor, then tighten after adjustment. Many people forget this step and damage the gas spring.

Conclusion

A monitor arm is one of the most worthwhile ergonomic upgrades you can make for your workspace. The North Bayou F80 (about $15-25) is the best choice for most users — gas spring, 2-6.5kg capacity, affordable price. If you have a higher budget or a heavier monitor, the Ergotron LX (around $100-150) is the gold standard with a 10-year warranty. For 49-inch ultrawide monitors, the Ergotron HX is the only reliable choice.

Advice: invest in a monitor arm that exceeds your current needs — it will follow you through multiple monitor upgrades and years of use.

Further reading: Ergotron Official Site, TechSpot Best Monitor Arms