又到了每月必不可少的跑分時間了，PCWorld本月公佈了Chrome, Firefox, Internet Explorer, Safari和Opera五款瀏覽器最新版本的跑分狀況，本次數據顯示Chrome原有的優勢逐漸被IE9和Firefox 5削弱，但依然保持相當出色的成績，值得注意的是後兩者在多個測試項目的性能報告中出現了領先，Chrome真正的對手已經出現。
| Browser | Google V8 (v.6) Score (higher is better) |
| Google Chrome 12 | 8205 |
| Firefox 5 | 3459 |
| Opera 11.50 | 3454 |
| Safari 5.1 | 2567 |
| Internet Explorer 9 | 2360 |
| Browser | Mozilla Kraken 1.1 Score in ms (lower is better) |
| Google Chrome 12 | 4841 |
| Firefox 5 | 5707 |
| Opera 11.50 | 12353 |
| Internet Explorer 9 | 15050 |
| Safari 5 | 17603 |
| Browser | SunSpider 0.9.1 Score in ms (lower is better) |
| Internet Explorer 9 | 245 |
| Google Chrome 12 | 267 |
| Firefox 5 | 282 |
| Opera 11.50 | 279 |
| Safari 5.1 | 303 |
| Browser | FishIE with 20 fish (FPS - higher is better) | 500 Fish |
| Internet Explorer 9 | 60 | 39 |
| Firefox 4 | 60 | 35 |
| Google Chrome 12 | 40 | 4 |
| Opera 11.50 | 20 | 3 |
| Safari 5 | 20 | 3 |
| Browser | Psychedelic Browsing RPM (higher is better) |
| Firefox 4 | 1885 (no sound) |
| Internet Explorer 9 | 1799 (correct sound) |
| Google Chrome 12 | 131 (correct sound) |
| Opera 11 | 82 (no sound) |
| Safari 5 | 83 (no sound) |
| Browser | Mozilla Hardware Acceleration Stress Test FPS (higher is better) |
| Firefox 4 | 60 |
| Internet Explorer 9 | 60 |
| Google Chrome 12 | 17 |
| Opera 11 | 17 |
| Safari 5 | 3 |