# Bosch CS5 15-Amp 7-1/4 in. Left-Blade Corded Circular Saw vs Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw: specs and price compared

A sourced, side-by-side comparison of the Bosch CS5 15-Amp 7-1/4 in. Left-Blade Corded Circular Saw (Bosch) and Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw (Ryobi) 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 | Bosch CS5 15-Amp 7-1/4 in. Left-Blade Corded Circular Saw | Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw |
| --- | --- | --- |
| US price | $179 | $119 |
| Brand | Bosch | Ryobi |
| Power source | corded | cordless |
| Blade size (in) | 7-1/4 in | 7-1/4 in |
| Voltage or amps | 15 A | 18 V |
| Max (rpm) | 6200 | 3800 |
| Bevel capacity (°) | 56 deg | 56 deg |
| Brushless | No | Yes |
| Weight (lb) | 10 lb | 6.6 lb |

## Key differences

- Power source: Bosch CS5 15-Amp 7-1/4 in. Left-Blade Corded Circular Saw corded vs Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw cordless
- Voltage or amps: Bosch CS5 15-Amp 7-1/4 in. Left-Blade Corded Circular Saw 15 A vs Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw 18 V
- Max (rpm): Bosch CS5 15-Amp 7-1/4 in. Left-Blade Corded Circular Saw 6200 vs Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw 3800
- Brushless: Bosch CS5 15-Amp 7-1/4 in. Left-Blade Corded Circular Saw No vs Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw Yes
- Weight (lb): Bosch CS5 15-Amp 7-1/4 in. Left-Blade Corded Circular Saw 10 lb vs Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw 6.6 lb

## What reviewers say

**Bosch CS5 15-Amp 7-1/4 in. Left-Blade Corded Circular Saw** — Only one whitelisted tester, Pro Tool Reviews, covers the Bosch CS5, and it is a brief 2010 first-look preview rather than a hands-on lab test, so no independently measured numbers exist. It praises the left-blade line of sight and calls the 15-amp saw one of the best values; no critical testing or negatives are available. (1 sourced review.)

**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.)

## Sources

- Bosch CS5 15-Amp 7-1/4 in. Left-Blade Corded Circular Saw: https://www.boschtools.com/us/en/products/cs5-0601672074 (boschtools.com, verified 2026-06-20)
- 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)

Canonical: https://frontdeskreview.com/gear/circular-saws/bosch-cs5-vs-ryobi-p508/
Cite: Per The Front Desk Review, Bosch CS5 15-Amp 7-1/4 in. Left-Blade Corded Circular Saw ($179) vs Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw ($119) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/circular-saws/bosch-cs5-vs-ryobi-p508/
License: CC BY 4.0.