The DeWalt DWS715 vs DeWalt DWS779 are two professional-grade 12-inch compound miter saws that dominate their category in power, precision, and reliability. While both belong to DeWalt’s high-performance lineup, they are built for different kinds of users.
The DWS715 is a single-bevel compound saw designed for portability and straightforward accuracy, while the DWS779 is a sliding compound miter saw made for larger capacity projects and extended reach. In this detailed comparison, we break down their specifications, strengths, and weaknesses to determine which saw provides the best value for professionals and advanced woodworkers.
Contents
Differences Between DeWalt DWS715 vs DeWalt DWS779
Below is a summary of the specifications:
Motor Power and Blade Speed
The DWS715 features a 15-amp motor with 4,000 RPM blade speed, providing excellent cutting performance across hardwoods, softwoods, and composite materials. The higher RPM means faster, smoother cuts, which makes it ideal for trim work and precision carpentry.
The DWS779 also runs on a 15-amp motor but with 3,800 RPM. While slightly slower in blade speed, it balances power with torque to handle wider crosscuts. The motor ensures smooth cutting performance across a larger range of stock sizes, making it versatile for both framing and finish work.
Winner: DeWalt DWS715 – Faster blade speed gives it an advantage in smooth, clean cuts.
Cutting Capacity and Versatility
The DWS715 provides a 2 x 8 crosscut at 90° and 2 x 6 at 45°. It handles 6.5-inch baseboards vertically and 5.25-inch crown molding nested. This capacity is more than sufficient for trim carpentry, flooring, and general woodworking tasks.
The DWS779 outperforms with its sliding rails, allowing a massive 2 x 14 crosscut at 90° and 2 x 10 at 45°. It accommodates 6.75-inch vertical baseboards and 7.5-inch crown molding nested, making it far superior for large-scale framing, cabinetry, and construction projects.
Winner: DeWalt DWS779 – Extended sliding capacity makes it significantly more versatile.
Miter and Bevel Adjustments
The DWS715 offers a 50° miter range left and right with 14 positive detents for precise angle settings. It has a single-bevel design, tilting 48° to the left, which requires flipping the workpiece for opposite bevel cuts.
The DWS779 improves flexibility with a 60° miter range to the right and 50° to the left, but it has only 10 positive stops. It also provides a dual-bevel system, tilting 48° both left and right, which allows compound cuts without repositioning the material.
Winner: DeWalt DWS779 – Wider miter range and dual-bevel capability increase efficiency.
Precision and Accuracy
The DWS715 maintains accuracy with its stainless steel detent plate and 14 stops, ensuring repeatable cuts for trim and framing. Its higher RPM enhances clean finishes, especially on fine molding.
The DWS779, although with fewer detents, excels in accuracy through its sliding mechanism and larger cutting reach. Its stainless steel detent plate provides long-term reliability, and the dual-bevel design reduces errors from repositioning material.
Winner: Tie – DWS715 offers higher speed for cleaner cuts, while DWS779 provides more precision through versatility.
Build Quality and Portability
The DWS715 weighs 42 lbs, making it lightweight and highly portable for contractors on the move. Its compact design is easy to transport while still offering stability during operation.
The DWS779 is heavier at 67 lbs, largely due to its sliding rail system. While less portable, the extra weight improves stability during cutting, particularly when handling wide boards. It is best suited for workshop setups or job sites where mobility is less critical.
Winner: DeWalt DWS715 – Lightweight and portable for mobile contractors.
Dust Collection Efficiency
Both models come with a rear dust port designed to connect to a vacuum or dust bag.
The DWS715 has standard dust collection efficiency, capturing a portion of debris but not all fine dust.
The DWS779 performs slightly better with its rail system design, which channels more debris toward the collection port. However, like most miter saws, external dust extraction is recommended for best results.
Winner: DeWalt DWS779 – Better dust control with improved collection flow.
Ease of Use and Adjustability
The DWS715 is simple and intuitive, making it easy to operate for both professionals and DIY users. Its lightweight build and 14 detent stops enhance workflow, but the single-bevel limitation makes compound cuts more time-consuming.
The DWS779 is designed for professional-grade projects. Its sliding rails, dual-bevel capability, and extended crosscut capacity make it more versatile. Although heavier, it saves time and effort on complex and large-scale tasks.
Winner: DeWalt DWS779 – Greater versatility and efficiency in demanding applications.
Quick Rundown Of DeWalt DWS715
Quick Rundown Of DeWalt DWS779
Conclusion
The DeWalt DWS715 and DeWalt DWS779 are both excellent miter saws, but they serve different purposes. The DWS715 is lightweight, affordable, and precise, making it ideal for contractors and woodworkers who prioritize portability and clean, accurate cuts. It is best for trim carpentry, smaller projects, and job sites where mobility is essential.
The DWS779, however, is the workhorse of the two, offering sliding rails, dual-bevel capacity, and unmatched cutting range. It is designed for large-scale projects, framing, cabinetry, and situations where extended reach and heavy-duty performance are required.
Overall Winner: DeWalt DWS779 – With its sliding functionality, larger crosscut capacity, and dual-bevel design, it outperforms the DWS715 as the ultimate professional choice. The DWS715 remains an excellent portable option, but the DWS779 delivers superior versatility and long-term value.