
DEWALT DCD799B
Score: 88/100
Bosch GSB18V-65N
Score: 88/100Rankings

The DEWALT DCD799B is a bare-tool, 20V MAX* ATOMIC COMPACT SERIES brushless hammer drill designed for high performance in confined spaces. Its primary limitation is the lack of included batteries and charger, requiring users to invest in the 20V MAX ecosystem. It is best suited for professionals such as electricians and plumbers who need maximum power in tight areas.

The Bosch GSB18V-65N is a compact, bare-tool 18V brushless hammer drill delivering 575 In.-Lbs. of torque with advanced safety features like KickBack Control. Its main limitation is the bare-tool format and limited masonry capacity compared to larger corded models. It is best suited for professionals needing versatile power in tight spaces.
| Attribute | ![]() | ![]() |
|---|---|---|
20 Vbest | 18 V | |
12.7 mmbest | 12.7 mmbest | |
28,050 BPMbest | 27,000 BPM | |
| ↓ lower better | 1.15 kg | 1.13 kgbest |
— | 575 in-lbsbest | |
— | 13 mmbest | |
1,650 RPM | 2,100 RPMbest | |
2best | 2best |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Power & Energy(1) | ||
Voltage (V) | 20 V | 18 V |
Ergonomics & Design(2) | ||
Weight (kg) | 1.15 kg | 1.13 kg |
Handle Type | None | Pistol-grip |
Performance & Speed(2) | ||
Impact Rate (BPM) | 28050 BPM | 27000 BPM |
No-Load Speed (RPM) | 1650 RPM | 2100 RPM |
Features & Safety(1) | ||
Operating Modes | Drill/Hammer | Hammer, Drill, Drive |


Products in the top-left offer the best value (high score, low price).

Professional reviewers, including Pro Tool Reviews, designate the DCD799B as the 'king of the Atomic drill line' due to its combination of highest power output (tested at 520-585 UWO) and compact 6.5-inch form factor. It is highly recommended for professionals who need hammer drill capabilities in a reduced-size profile.
Search results indicate a lack of direct consumer reviews, but common themes from product contexts highlight praise for its compact power and masonry performance in tight spaces. There are no recurring complaints noted in the available data, suggesting general satisfaction with its utility for confined area work.

Professional reviewers and editors characterize the Bosch GSB18V-65N as a pro-grade tool that hits the sweet spot between power, size, and smart features. They praise its 575 In.-Lbs. torque, compact build for tight spots, and features like KickBack Control and the all-metal chuck as ideal for everyday jobsite use without gimmicks.
Search results lack direct consumer reviews or recurring complaints. Professional sources emphasize reliability for pros like carpenters and electricians, with no common user feedback on issues like battery life or durability noted.

