DeWalt 20V MAX XR 3-Speed Impact 1/4-in Driver (Tool Only) (DCF845B) vs DeWalt 20V MAX XR Brushless Drywall Screwgun (Tool Only) (DCF630B)
Two of the impact drivers and wrenches in our best cordless impact drivers and wrenches, ranked on official maker specs comparison, lined up spec by spec. Every figure comes from the manufacturer pages linked below, and the scores use the same published formula as the full ranking.
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#2 of 60 in Impact drivers and wrenches
DeWalt 20V MAX XR 3-Speed Impact 1/4-in Driver (Tool Only) (DCF845B)
9.5/10
Best for: Official 20 V, 3400 RPM, 2.35 lb
Check price at AmazonD
#3 of 60 in Impact drivers and wrenches
DeWalt 20V MAX XR Brushless Drywall Screwgun (Tool Only) (DCF630B)
9.5/10
Best for: Official 20 V, 4850 RPM, 2.6 lb
Check price at AmazonSpec-by-spec comparison
Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.
| Spec | DeWalt 20V MAX XR 3-Speed Impact 1/4-in Driver (Tool Only) (DCF845B) | DeWalt 20V MAX XR Brushless Drywall Screwgun (Tool Only) (DCF630B) | Weight |
|---|---|---|---|
| Official no-load speedThe official no-load speed published on the maker's product page, in RPM. When the official page lists a range, we use the highest official figure in that range. Official no-load speed is a free-speed figure, not a measured speed under load. Official values outside the reference range are clamped for scoring only; the official figure is still shown. | 3400 RPM | 4850 RPM | 30% |
| Official tool weightThe official tool weight published on the maker's product page, in pounds. When the official page lists a weight excluding the battery, we use that official tool-only figure. Official values outside the reference range are clamped for scoring only; the official figure is still shown. | 2.35 lb | 2.6 lb | 25% |
| Official voltageThe official battery-platform voltage published on the maker's product page (for example M12 / 12V max, M18 / 18V LXT, 20V MAX, 40V XGT or 60V MAX). A higher official platform voltage is not automatically the right tool for tight spaces. Official values outside the reference range are clamped for scoring only; the official figure is still shown. | 20 V | 20 V | 25% |
| Official brushless motorWhether the official product page lists a brushless motor (Yes) or a brushed motor / no official listing. An official brushless listing scores at the top of this criterion; Not listed scores at the category minimum. | Yes | Yes | 20% |
| Official model number | DCF845B | DCF630B | info |
| Official product name | 20V MAX XR 3-Speed Impact 1/4-in Driver (Tool Only) | 20V MAX XR Brushless Drywall Screwgun (Tool Only) | info |
| Official voltage | 20 V | 20 V | info |
| Official no-load speed | 3400 RPM | 4850 RPM | info |
| Official tool weight | 2.35 lb | 2.6 lb | info |
| Official brushless motor | Yes | Yes | info |
| Official max torque | Not listed | Not listed | info |
| Official chuck type | Hex | Keyless | info |
| Official motor type | Brushless | Brushless | info |
| Official configuration | Tool only (battery and charger sold separately, per the official product page). | Tool only (battery and charger sold separately, per the official product page). | info |
| TorquePick score | 9.5/10 | 9.5/10 | 100% |
Where each one comes out ahead
DeWalt 20V MAX XR 3-Speed Impact 1/4-in Driver (Tool Only) (DCF845B)
Better published figure on: Official tool weight.
What we like
- Official maker product page lists a no-load speed of 3400 RPM.
- Official maker product page lists a brushless motor.
- Official maker product page lists a tool weight of 2.35 lb.
Watch out for
- Official maximum torque is Not listed as a specification on the official product page we used.
DeWalt 20V MAX XR Brushless Drywall Screwgun (Tool Only) (DCF630B)
Better published figure on: Official no-load speed.
What we like
- Official maker product page lists a no-load speed of 4850 RPM.
- Official maker product page lists a brushless motor.
- Official maker product page lists a tool weight of 2.6 lb.
Watch out for
- Official maximum torque is Not listed as a specification on the official product page we used.
Verdict
On published specs these two score the same. Specs don't capture sound character or feel, so weigh the pros and cons above too.
- Choose the DeWalt 20V MAX XR 3-Speed Impact 1/4-in Driver (Tool Only) (DCF845B) if this sounds like you: official 20 V, 3400 RPM, 2.35 lb.
- Choose the DeWalt 20V MAX XR Brushless Drywall Screwgun (Tool Only) (DCF630B) if this sounds like you: official 20 V, 4850 RPM, 2.6 lb.
- DeWalt 20V MAX XR 3-Speed Impact 1/4-in Driver (Tool Only) (DCF845B): Official DeWalt product page (DCF845B)
- DeWalt 20V MAX XR Brushless Drywall Screwgun (Tool Only) (DCF630B): Official DeWalt product page (DCF630B)
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