114 textures, 512 x 256 each covering about 28,000 characters.
Sounds like a huge GPU memory hog, but it takes 8 of these to equal a single 1024 * 1024 texture. Unless it is displaying a full range of Kanji, it will rarely go over about 16 or so. People have been pretty predictable about which unicode characters they use for enhancing display names. Displaying pure ASCII, it uses far less GPU memory.