Two different i7-7800x models

[The Elder Smurf]

I was just looking at motherboards and according to asrock, there are two different i7-7800x's and in further investigation there does seem to be two different sku's, but beyond that, can't find anything. Is this just some wierd inventory thing on Intel's half or is there actual differences?

[bleedblue]

2 different i7 7800x's or 2 different motherboards for the i7 7800x. Also, please tell me you're not planning on getting one.

[The Elder Smurf]

10 minutes ago, bleedblue said:

2 different i7 7800x's or 2 different motherboards for the i7 7800x. Also, please tell me you're not planning on getting one.

You can see here what I mean https://www.asrock.com/mb/Intel/X299M Extreme4/index.us.asp#CPU

Also hell naw, I wouldn't poke an Intel system with a 10 foot pole, but a buddy of mine just wanted to see his options between a 2950x and what Intel had to offer to compete on micro atx. With Asrock being the only ones with MATX for either platform, I was checking to see if the boards even supported the big daddy 7980xe, and to my surprise it does (hell even their mini itx board does which is just a safety hazard). But I noticed there are two separate 7800x's listed

[WoodenMarker]

They're different steppings / revisions. U-0 is more recent than M-0.

The first version of a new microprocessor product is the A-0 core step. As Intel makes functional fixes or manufacturing improvements, the core stepping letter and / or number is incremented. Minor changes result in an increased number (for example, A-3 to A-4), while more complex changes result in the letter being changed (for example, A-3 to B-0). B-0 core stepping is more recent than an A-4 core stepping. 

[The Elder Smurf]

31 minutes ago, WoodenMarker said:

They're different steppings / revisions. U-0 is more recent than M-0.

The first version of a new microprocessor product is the A-0 core step. As Intel makes functional fixes or manufacturing improvements, the core stepping letter and / or number is incremented. Minor changes result in an increased number (for example, A-3 to A-4), while more complex changes result in the letter being changed (for example, A-3 to B-0). B-0 core stepping is more recent than an A-4 core stepping. 

The more you know, well thank you.