--- title: "Gamko New Energy GKA210M400W (1/2*4*20) vs Gamko New Energy GKA210N132-740 - Solar Panel Comparison | ComparePV" description: "Compare Gamko New Energy GKA210M400W (1/2*4*20) vs Gamko New Energy GKA210N132-740 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/gamko-new-energy-gka210m400w-1-2-4-20/gamko-new-energy-gka210n132-740" image: "https://comparepv.com/og/compare/panels/gamko-new-energy-gka210m400w-1-2-4-20/gamko-new-energy-gka210n132-740.png" updated: 2026-09-11 --- # Gamko New Energy GKA210M400W (1/2\*4\*20) vs Gamko New Energy GKA210N132-740 GKA210N132-740 leads on the differences that matter The largest is module efficiency: 0.82 pp more efficient. 6 of 15 comparable parameters are identical, with 4 more left out because at least one datasheet does not publish them. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | [Gamko New Energy GKA210N132-740](https://comparepv.com/panel/gamko-new-energy-gka210n132-740) | | Manufacturer | Gamko New Energy | Gamko New Energy | | Power | 400 Wp | 740 Wp | | Efficiency | 23.00 % | 23.82 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | GKA210M400W (1/2\*4\*20) | GKA210N132-740 | Difference | | --- | --- | --- | --- | | Module efficiency | 23.00 % | 23.82 % | +0.82 pp for GKA210N132-740 | | Rated power | 400 Wp | 740 Wp | +340 W for GKA210N132-740 | | Power density | 207.7 Wp/m² | 238.2 Wp/m² | +30.5 Wp/m² for GKA210N132-740 | | Weight | 18.0 kg | 32.0 kg | -14.0 kg for GKA210M400W (1/2\*4\*20) | | Short-circuit current | 9.73 A | 19.45 A | 9.72 A apart | | Module area | 1.925 m² | 3.106 m² | 1.181 m² apart | | Current at max power | 9.27 A | 18.52 A | 9.25 A apart | | Dimensions | 2188x880x30 mm | 2384x1303x33 mm | 2188x880x30 mm vs 2384x1303x33 mm | | Voltage at max power | 40.99 V | 39.96 V | 1.03 V apart | ## Every compared parameter | Parameter | GKA210M400W (1/2\*4\*20) | GKA210N132-740 | | --- | --- | --- | | Rated power | 400 Wp | 740 Wp | | Module efficiency | 23.00 % | 23.82 % | | Power density | 207.7 Wp/m² | 238.2 Wp/m² | | Open-circuit voltage | 47.14 V | 47.95 V | | Voltage at max power | 40.99 V | 39.96 V | | Short-circuit current | 9.73 A | 19.45 A | | Current at max power | 9.27 A | 18.52 A | | Temperature coefficient | - | -0.340 %/°C | | Dimensions | 2188x880x30 mm | 2384x1303x33 mm | | Module area | 1.925 m² | 3.106 m² | | Weight | 18.0 kg | 32.0 kg | | Weight per kWp | 45.0 kg/kWp | 43.2 kg/kWp | | Product warranty | - | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | 0.45 %/yr | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | - | 132 | | Bifacial | Yes | Yes | ## Thirty-year yield A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year Projected at 25 °C. Not published by Gamko New Energy, so a hotter case cannot be shown without inventing one side of it. - **Cumulative output, GKA210M400W (1/2\*4\*20):** 13,421 kWh - **Cumulative output, GKA210N132-740:** 24,828 kWh - **Gap:** 11,407 kWh ## Output when hot | Condition | Cell temperature | GKA210M400W (1/2\*4\*20) | GKA210N132-740 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | - | 740 W | 100.0% of rated power | | Cool, bright day | 40 °C | - | 702 W | 94.9% of rated power | | Typical summer roof | 55 °C | - | 665 W | 89.8% of rated power | | Hot roof | 70 °C | - | 627 W | 84.7% of rated power | ## Against the whole database | Measure | GKA210M400W (1/2\*4\*20) | GKA210N132-740 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,970 | #447 | 14,129 | GKA210N132-740 leads by 1,523 places | | Power density | #10,606 | #460 | 14,129 | GKA210N132-740 leads by 10,146 places | | Heat behaviour | #14,048 | #8,846 | 14,129 | GKA210N132-740 leads by 5,202 places | | Weight | #574 | #284 | 14,129 | GKA210N132-740 leads by 290 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #11,349 | #175 | 14,129 | GKA210N132-740 leads by 11,174 places | ## Questions ### Which panel is better: Gamko New Energy GKA210M400W (1/2\*4\*20) or Gamko New Energy GKA210N132-740? According to our database: **Gamko New Energy GKA210N132-740** has higher module efficiency (**23.82%** vs **23.00%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Gamko New Energy GKA210M400W (1/2\*4\*20) and Gamko New Energy GKA210N132-740? **Gamko New Energy GKA210M**400 W** (1/2\*4\*20)** has a module efficiency of **23.00%**, while **Gamko New Energy GKA210N132-740** is **23.82%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Gamko New Energy GKA210M400W (1/2\*4\*20) use vs Gamko New Energy GKA210N132-740? **Gamko New Energy GKA210M**400 W** (1/2\*4\*20)** uses **TOPCon** cells; **Gamko New Energy GKA210N132-740** uses **TOPCon**. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells. ### What is the warranty on Gamko New Energy GKA210M400W (1/2\*4\*20) and Gamko New Energy GKA210N132-740? **Gamko New Energy GKA210M**400 W** (1/2\*4\*20)** has a **30 years** power warranty; **Gamko New Energy GKA210N132-740** has a **30 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter. ### Are Gamko New Energy GKA210M400W (1/2\*4\*20) and Gamko New Energy GKA210N132-740 bifacial panels? Both **Gamko New Energy GKA210M**400 W** (1/2\*4\*20)** and **Gamko New Energy GKA210N132-740** are bifacial - they capture reflected light from the ground, which can add 5**-15%** more annual energy on ground-mount or elevated rooftop installations with a light surface beneath. ## Related comparisons - [Gamko New Energy GKA210M400W (1/2\*4\*20) vs Gamko New Energy GKA210N132](https://comparepv.com/compare/gamko-new-energy-gka210m400w-1-2-4-20/gamko-new-energy-gka210n132) - 10 differences, the largest is module efficiency - [Gamko New Energy GKA210M400W (1/2\*4\*20) vs Gamko New Energy GKA210N132-750](https://comparepv.com/compare/gamko-new-energy-gka210m400w-1-2-4-20/gamko-new-energy-gka210n132-750) - 10 differences, the largest is module efficiency - [Gamko New Energy GKA210M400W (1/2\*4\*20) vs Gamko New Energy GKA210N132-745](https://comparepv.com/compare/gamko-new-energy-gka210m400w-1-2-4-20/gamko-new-energy-gka210n132-745) - 10 differences, the largest is module efficiency - [Gamko New Energy GKA210M400W (1/2\*4\*20) vs Gamko New Energy GKA210N132-735](https://comparepv.com/compare/gamko-new-energy-gka210m400w-1-2-4-20/gamko-new-energy-gka210n132-735) - 9 differences, the largest is module efficiency - [Gamko New Energy GKA210M400W (1/2\*4\*20) vs Gamko New Energy GKA210N132-730](https://comparepv.com/compare/gamko-new-energy-gka210m400w-1-2-4-20/gamko-new-energy-gka210n132-730) - 9 differences, the largest is rated power - [Gamko New Energy GKA210M400W (1/2\*4\*20) vs Gamko New Energy GKA210N132-720W (series)](https://comparepv.com/compare/gamko-new-energy-gka210m400w-1-2-4-20/gamko-new-energy-gka210n132-720w-series) - 8 differences, the largest is rated power --- Source: https://comparepv.com/compare/gamko-new-energy-gka210m400w-1-2-4-20/gamko-new-energy-gka210n132-740 Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.