HP isn't going to sit back and let Chromebooks dominate the low cost PC market, today launching a set of very competitively priced Windows 8.1 products that will go on sale this holiday season.

Joining HP's new line of Stream low-cost PCs are two models, one with a 11.6" HD (read: 1366 x 768) non-touch display and another with a 13.3" HD touchscreen. Both are powered by Intel Celeron N2840 CPUs, providing a fanless, slim and light design, according to HP's documentation.

HP hasn't revealed much about the hardware in the Stream 11 or Stream 13 just yet, but they do say there will be 32 GB of internal NAND, 2 GB of RAM, and two colors available: blue and magenta. If you wanted something a little more standard, like black or white, you're completely out of luck with these low-cost laptops.

As for the tablets, HP is launching the Stream 7 and Stream 8 with, as you might have guessed, 7- and 8-inch 1280 x 800 displays respectively. Internally you get a quad-core Intel Atom Bay Trail Z3735G processor and 1 GB of RAM, although like the new Stream laptops, HP hasn't been particularly forward with the remainder of these tablets' hardware.

Perhaps most importantly, all of HP's new Stream products will be cheap. The Stream 11 starts at just $199, with the Stream 13 following closely at $229. As for the tablets, HP's Stream 7 will set you back just $99, and the Stream 8 will cost $149. All products will be available in the United States in November.

But it's not just the price that makes these products so attractive: HP and Microsoft are throwing in a number of sweeteners to the deal. All products come with one year of free Office 365 personal, including 1 TB of free OneDrive storage, and 60 minutes of free Skype per month. The higher-end products (the Stream 13 and Stream 8) also come with 200 MB of free LTE data each month for the "life of the device", with no annual contract.

These four new products join the Stream 14 - announced last month for $299 - in HP's low cost line-up.