Dewalt DWS779 VS DWS780 Comparison: Expert Guide!

Buying a miter saw is not an easy task, right? I mean, there are many features to check and compare! Indeed there are many articles you can read, but if you are not a professional, you will probably still find this process really hard. This is why, in this article, I will do my best to compare between Dewalt DWS779 and DWS780. I hope the “Dewalt DWS779 vs. Dewalt DWS780” article simplifies the whole thing for you.

Dewalt DWS779 VS DWS780 – Full Comparison

Dewalt DWS779 VS DWS780 Power and Portability

The motor of Dewalt DWS779 is of 25 amperes, and it can make 3900 revolutions per turn. Its maximum cutting thickness is 6.75 inches. Its ease of use, precision, and portability make it suitable for professionals and hobbyists alike.

Dewalt DWS780 is one of the best 12-inch sliding compound miter saws on the market. It is durable and sturdy thanks to its 120 volts and 15 amperes motor that provides 3.800 rpm. These specifications ensure that it can keep working for a whole day without stopping.

Moreover, the saw itself of Dewalt DW780 is also durable thanks to its stainless steel castings that allow it to last for a long time and withstand possible harsh conditions of any job site.

Like Dewalt DWS779, it is suitable for professionals and DIYs.

Both miter saws can be used to cut plywood, plastic, and metals; however, with Dewalt DWS779, you can adjust the speed by which you need the blades to turn according to your needs.

Dewalt DWS779 VS DWS780 Features:

The blade of Dewalt DWS779 can tilt in both directions, so you will not need to adjust things, and you will get precise cuts with next to zero effort. Moreover, it enables you to cut up to 2×12 and 2×16 pieces of wood at 45 degrees and 90 degrees, respectively, thanks to its back fence design.

Also, it as high accuracy and provides you with better visibility due to its cutline blade positioning system that provides it with an adjustment-free cut line indication.

Dewalt DWS780 helps you adjust free cuts effortlessly, thanks to its amazing revolutionary XPS crosscut positioning system that comes with ultra-bright LED light. This system makes it shed laser light on the exact place of contact between the blade and material you will cut.

Note, though, that this laser depends on brightness, so if you are in a place that has strong lights, you may not see the laser.

Like Dewalt DWS779, this one also has a perfect back fence design that cuts up to 2×16 pieces of lumber at 90 degrees, and 2×12 at 45 degrees. Already impressed? Wait for more! It also enables you to bevel starting from zero until you reach 45 degrees, and you can stop at 0, 22.5, 33.9, 45, and 49 degrees in both directions.

It also has easy adjustment because its miter can tilt to 60 degrees to the right and 50 degrees to the left. Its tall sliding fence supports, the excellent back fence design, and the dented plate with cam lock ensure the effortless production of accurate and precise cuts.

Dust and Cleaning:

Dewalt DWS779 comes with a dust collection system that enables it to collect up to 75% of the produced dust. This ensures that you do not inhale dusty air, provides you with a clear atmosphere, and saves you the time you would spend cleaning after you finish your task.

Moreover, you can easily clean it by wiping a cloth dipped in any cleaning solution available around you.

Similarly, Dewalt DWS780 comes with a dust collection system that can soak up to 75% of the produced dust.


It does not vibrate much, so it protects you from being exposed to harmful vibrations; it also has a transparent blade guard that lets you supervise your task and have better control over the cuts. This, of course, prevents you from many injuries.

Likewise, Dewalt DWS780 is pretty much safe to use. The blade is only exposed when it is in use because, when it is not, it is covered by a sturdy and an automatic cover. Moreover, the unit has a strong base that ensures that it does not move while you are using it.


Both models come with no stands. If you want one for you to have stability and accuracy, you can install any of them on a compatible miter saw stand.


Because of the LED laser light that Dewalt DWS780 (499$) provides, it is more pricey than Dewalt DWS779 (329$ ). In my opinion, this difference in money is justified since the laser light ensures better alignment and more safety, especially if you are an amateur.


Dewalt DWS779: 56 pounds

Dewalt DWS780: 56 pounds


Dewalt DWS779: 3.800 rpm

Dewalt DWS780: 3.800 rpm


Dewalt DWS779: zero volts

Dewalt DWS780: 120 volts


Dewalt DWS779: 12 inches

Dewalt DWS780: 12 inches

Power Source:

Dewalt DWS779: corded-electric

Dewalt DWS780: corded-electric


Dewalt DWS779: 2 x 23 x 18.5 inches

Dewalt DWS780: 21.5 x 17.7 x 17.1 inches

Dewalt DW779 and Dewalt DWS780 Pros & Cons:

Dewalt DWS779 Pros & Cons

  • Relatively cheapEasy to usePowerfulLasts for a long timeHas a dust collection system
  • HeavyNo LED guide

Dewalt DWS780 Pros & Cons

  • Revolutionary XPS crosscut positioning systemPortableThree-year warrantyUltra-bright LED lightDust collecting systemExcellent back fence designStainless steel sawStrong and durable motor
  • Does not have adjustable bearingsThe slide function occasionally sticksA bit unsafe because the clamp does not have a locking mechanism

Safety Precautions:

Read the safety precaution that the manual provides you with before attempting to use any miter saw.

These precautions include:


Whenever you are using a miter saw, you should entirely focus on what you are doing. Never ever use it while thinking about anything else. You should always have a clear head while using it.

Periodic Maintenance:

You should always make sure that the saw needs no maintenance. Whenever you know that it needs to be maintained, immediately do the necessary. Also, never use a dull blade because this can injure you somehow. Moreover, keep it lubricated.

Brake Control:

You should completely stop the saw before putting a new piece of wood to be cut so as not to cut off your limb.


Do not wear uncomfortable garments or clothes that might get you tangled somehow. You should also wear safety headgear, gloves, and earplugs.

Dewalt DWS779 VS DWS780: Which One to Choose?

As I  mentioned before, I believe that it is better to buy the Dewalt DWS780 because its LED light guarantees safety and precision; however, if you do not have that much money, it is entirely okay. Most practitioners do not really feel the difference that the LED light makes.

Since both models are similar in their motor power, and blades, there is no significant difference, except for the money.