---
title: "Growatt MAX 320K-X vs Sungrow SG333HX - Inverter Comparison | ComparePV"
description: "Compare Growatt MAX 320K-X vs Sungrow SG333HX side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/growatt-max-320k-x/sungrow-sg333hx"
updated: 2026-01-16
---

# Growatt MAX 320K-X vs Sungrow SG333HX

SG333HX leads on the differences that matter

The largest is rated ac power: 13.00 kW apart. 10 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [Growatt MAX 320K-X](https://comparepv.com/inverter/growatt-max-320k-x) | [Sungrow SG333HX](https://comparepv.com/inverter/sungrow-sg333hx) |
| Manufacturer | Growatt | Sungrow |
| Rated AC power | 320 kW | 333 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

Ranked by how much the difference matters, not by datasheet order.


| Parameter | MAX 320K-X | SG333HX | Difference |
| --- | --- | --- | --- |
| Rated AC power | 320.00 kW | 333.00 kW | 13.00 kW apart |
| MPP trackers | 6 | 12 | +6 trackers for SG333HX |
| Max input current per tracker | 80.0 A | 40.0 A | +40.0 A for MAX 320K-X |
| Max AC power | 352.00 kW | 333.00 kW | 19.00 kW apart |
| Weight | 126.0 kg | 116.0 kg | -10.0 kg for SG333HX |
| European efficiency | 98.5 % | 98.8 % | +0.3 pp for SG333HX |
| Max AC current | 230.9 A | 240.5 A | 9.6 A apart |
| Start voltage | 500 V | 550 V | -50 V for MAX 320K-X |
| Strings per tracker | 5 | 2 | 3 strings apart |
| Dimensions | 790x1145x371 mm | 870x1136x361 mm | 790x1145x371 mm vs 870x1136x361 mm |


## Every compared parameter


| Parameter | MAX 320K-X | SG333HX |
| --- | --- | --- |
| Rated AC power | 320.00 kW | 333.00 kW |
| Max AC power | 352.00 kW | 333.00 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 800 V | 800 V |
| Max AC current | 230.9 A | 240.5 A |
| Max PV power | 480.00 kW | - |
| DC/AC ratio | 1.50 | - |
| Max DC voltage | 1500 V | 1500 V |
| MPPT voltage range | 500-1500 V | 500-1500 V |
| Start voltage | 500 V | 550 V |
| MPP trackers | 6 | 12 |
| Strings per tracker | 5 | 2 |
| Max input current per tracker | 80.0 A | 40.0 A |
| European efficiency | 98.5 % | 98.8 % |
| Max efficiency | 99.0 % | 99.0 % |
| CEC efficiency | - | - |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 126.0 kg | 116.0 kg |
| Weight per kW | 0.4 kg/kW | 0.3 kg/kW |
| Dimensions | 790x1145x371 mm | 870x1136x361 mm |
| Ingress protection | IP66 | IP66 |
| Cooling | forced-air | forced-air |
| Noise | - | - |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | - |
| Ethernet | - | - |
| Arc fault protection | Yes | - |
| Integrated DC switch | Yes | Yes |
| Warranty | 5 yrs | - |


## Related comparisons

- [Growatt MAX 320K-X vs Sungrow SG320HX](https://comparepv.com/compare-inverters/growatt-max-320k-x/sungrow-sg320hx) - 7 differences, the largest is mpp trackers
- [Growatt MAX 320K-X vs Sungrow SG350HX-US](https://comparepv.com/compare-inverters/growatt-max-320k-x/sungrow-sg350hx-us) - 8 differences, the largest is mpp trackers
- [Growatt MAX 320K-X vs GoodWe GW320K-UT](https://comparepv.com/compare-inverters/growatt-max-320k-x/goodwe-gw320k-ut) - 7 differences, the largest is mpp trackers
- [Sungrow SG333HX vs Growatt MAX 333K-X](https://comparepv.com/compare-inverters/sungrow-sg333hx/growatt-max-333k-x) - 8 differences, the largest is mpp trackers
- [Sungrow SG333HX vs SolarEdge TerraMax Inverter SE330K](https://comparepv.com/compare-inverters/sungrow-sg333hx/solaredge-solaredge-terramax-inverter-se330k) - 6 differences, the largest is rated ac power
- [Sungrow SG333HX vs SOFAR 330KTLX0](https://comparepv.com/compare-inverters/sungrow-sg333hx/sofar-solar-sofar-330ktlx0) - 7 differences, the largest is rated ac power


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Source: https://comparepv.com/compare-inverters/growatt-max-320k-x/sungrow-sg333hx

Not in this file, on the page: a written summary generated on request.