While many apps and operating systems made the jump to 64-bit code a while ago, Googles Chrome browser is still stuck in a 32-bit world and misses out on much of what newer computers can offer. Today, though, its moving into the modern era: Google has released test versions of 64-bit Chrome for Windows 7 and 8 users. The upgrade lets the app take full advantage of newer processors and their instruction sets, delivering about a 25 percent speed boost for media-intensive pages.