The Genmitsu 4040-PRO MAX is the better CNC router overall, rated 3.0 to 2.8. The Genmitsu 4040-PRO MAX leads on spindle. The Genmitsu 4040-PRO wins on price. The Genmitsu 4040-PRO costs $350 less ($599 vs $949).
The 4040 to buy for someone who wants to cut real projects in wood and soft metal from day one, with a proper router in the box. Those who only engrave can save with the 4040-PRO.
Amazon $959 SainSmart $949A low cost, upgradable 4040 for hobbyists who want lead screw accuracy and a bigger bed than a 3018. Plan on a trim router upgrade for serious wood cutting.
Amazon $609 SainSmart $599Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every compact CNC router; a clear win is highlighted. How we rank explains each one.
| Factor weight | Genmitsu 4040-PRO MAX | Genmitsu 4040-PRO |
|---|---|---|
| Overall rating | 3.0/5 | 2.8/5 |
| Price 25% | 32 $949 | 52 $599 |
| Work area 15% | 98 246 sq in (15.7 x 15.7 in) | 98 246 sq in (15.7 x 15.7 in) |
| Spindle 15% | 77 710 W spindle | 7 75 W spindle |
| Motion 20% | 45 screw or rack drive, limit switches | 45 screw or rack drive, limit switches |
| Warranty 25% | 0 1-year warranty | 0 1-year warranty |
| Genmitsu 4040-PRO MAX | Genmitsu 4040-PRO | |
|---|---|---|
| Work area | ||
| Travel (X x Y x Z) | 15.7 x 15.7 x 3.1 in | 15.7 x 15.7 x 3.1 in |
| Area | 246 sq in | 246 sq in |
| Spindle | ||
| Spindle | 710 W digital trim router, 65 mm mount | 775 brushed DC spindle, 42 mm mount |
| Power | 710 W | 75 W |
| Top speed | 30,000 rpm | 9,000 rpm |
| Motion and control | ||
| Frame | aluminum | aluminum |
| Linear rails | No | No |
| Drive | Lead screw | Lead screw |
| Closed-loop steppers | No | No |
| Limit switches | Yes | Yes |
| Controller | GRBL, 32-bit board | GRBL, 32-bit board |
| Offline controller | No | No |
| Build | ||
| Weight | 54.2 lb | 45.5 lb |
| Warranty | 1 year | 1 year |
| Released | 2024-07 | 2022-10 |
