# Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw vs Ridgid R8654B 18V OCTANE Brushless Cordless 7-1/4 in. Circular Saw: specs and price compared

A sourced, side-by-side comparison of the Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw (Ryobi) and Ridgid R8654B 18V OCTANE Brushless Cordless 7-1/4 in. Circular Saw (Ridgid) among circular saws. Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw is the cheaper of the two at $119.

## Side by side

| Spec | Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw | Ridgid R8654B 18V OCTANE Brushless Cordless 7-1/4 in. Circular Saw |
| --- | --- | --- |
| US price | $119 | $169 |
| Brand | Ryobi | Ridgid |
| Released | — | 2019 |
| Power source | cordless | cordless |
| Blade size (in) | 7-1/4 in | 7-1/4 in |
| Voltage or amps | 18 V | 18 V |
| Max (rpm) | 3800 | 5600 |
| Bevel capacity (°) | 56 deg | 56 deg |
| Brushless | Yes | Yes |
| Weight (lb) | 6.6 lb | 9.5 lb |

## Key differences

- Max (rpm): Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw 3800 vs Ridgid R8654B 18V OCTANE Brushless Cordless 7-1/4 in. Circular Saw 5600
- Weight (lb): Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw 6.6 lb vs Ridgid R8654B 18V OCTANE Brushless Cordless 7-1/4 in. Circular Saw 9.5 lb

## What reviewers say

**Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw** — Only one whitelisted source covers the exact P508: a 2017 pre-launch preview from Pro Tool Reviews, not a hands-on lab test, so no measured results exist. It praises the brushless motor and 26% larger 7-1/4-inch cut capacity as clear upgrades, but flags the doubled price and still-missing rafter hook. (1 sourced review.)

**Ridgid R8654B 18V OCTANE Brushless Cordless 7-1/4 in. Circular Saw** — Only one whitelisted tester, Pro Tool Reviews, published a hands-on head-to-head review of the exact R8654B; no other whitelisted hands-on reviews were found. Their verdict: a solid brushless upgrade over Ridgid's Gen5X with excellent blade sightlines and shoe glide, but middling raw power (lowest of three power tiers in their test), a guard that hangs on thin cuts, and heavy weight. (1 sourced review.)

## Sources

- Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw: https://www.homedepot.com/p/RYOBI-ONE-18V-Brushless-Cordless-7-1-4-in-Circular-Saw-Tool-Only-P508/301848641 (homedepot.com, verified 2026-06-20)
- Ridgid R8654B 18V OCTANE Brushless Cordless 7-1/4 in. Circular Saw: https://www.homedepot.com/p/RIDGID-18V-OCTANE-Brushless-Cordless-7-1-4-in-Circular-Saw-Tool-Only-R8654B/308056101 (homedepot.com, verified 2026-06-20)

Canonical: https://frontdeskreview.com/gear/circular-saws/ryobi-p508-vs-ridgid-r8654b/
Cite: Per The Front Desk Review, Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw ($119) vs Ridgid R8654B 18V OCTANE Brushless Cordless 7-1/4 in. Circular Saw ($169) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/circular-saws/ryobi-p508-vs-ridgid-r8654b/
License: CC BY 4.0.