Many printer manufacturers these days are offering their customers an option when it comes to cartridge volume; newer printers often accept both low yield and high yield cartridges. High yield, sometimes labeled as XL, cartridges contain twice to three times as much ink or toner as the low yield version. If you do a lot of printing, an XL cartridge will last longer and reduce the number of times a month you have to come in for refills.
HP is leading other manufacturers in offering high yield ink and toner cartridges. They currently offer XL versions of their #60, #74 & 75, #88, #901, #920 and #940 ink cartridges and many of their laser cartridges (denoted by an “X” at the end of the cartridge number; C7115x, the high yield version of the C7115A). A few other manufacturers have followed suit, but HP has the largest selection of high yield cartridges.
If you print frequently or in large quantities you should consider purchasing XL or high yield cartridges for your printer if they are available. They may cost a bit more up front, but your overall cost-per-page will be lower. You will also reduce the risk of running out of ink or toner in the middle of a large print job.