Which is better for drilling holes?

The DCD771C2 drill/driver. Its 1/2-inch chuck takes standard drill bits, and the impact driver's 1/4-inch hex cannot. Use the impact driver only for fastening.

Which drives screws faster?

The DCF787C2 impact driver. Its 1,500 in-lbs of torque and 2,800 rpm top speed outclass the drill's 300 unit watts out and 1,500 rpm.

Do the batteries work in both tools?

Yes. Both are DeWalt 20V MAX tools and both kits include two 1.3 Ah lithium-ion batteries and a charger, so packs swap between them.

Is the impact driver worth the extra?

It is actually cheaper right now: $99.00 at Home Depot versus $109.99 at Walmart for the drill, both as of November 3, 2026. Buy it if you mostly drive screws; buy the drill if you need to bore holes.

The impact driver's brushless motor is rated for up to 57% more runtime per charge and has no brushes to wear out. The drill's brushed motor is simpler but wears faster.

Can I use the impact driver on furniture or drywall?

With care. Its high torque can strip screws or crush soft material, so use the variable speed trigger gently. The drill's clutch gives more control for light work.

DeWalt 20V MAX Cordless Drill/Driver Kit vs DeWalt 20V MAX 1/4 in. Impact Driver Kit (DCF787C2)

Buy the DCD771C2 drill/driver kit if you need to bore holes and drive screws with one tool; it is the more versatile of the two. Buy the DCF787C2 impact driver kit if your work is mostly driving long screws and lag bolts, where its 1,500 in-lbs of torque beats the drill's 300 unit watts out. The impact driver is also cheaper right now: $99.00 at Home Depot versus $109.99 at Walmart for the drill, both as of November 3, 2026. Both run on DeWalt's 20V MAX battery system, so the batteries and charger are interchangeable.

Today the DeWalt 20V MAX 1/4 in. Impact Driver Kit (DCF787C2) costs $10.99 less at its best price.

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