beginner99
Diamond Member
- Jun 2, 2009
- 5,320
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That's an extremely poor showing for Skylake-X. In Excel the i7-7800X (a six core CPU) uses more power than the i7 6950X (a ten core CPU) and is slower. In CB15 It also uses more power than the i7 6900K (an eight core CPU) and is also slower.
Intel has destroyed efficiency by using thermal paste, adding AVX-512, using a mesh, and changing the cache hierarchy.
I suspect they are also having process issues with these chips. They 7800x being lower clocked than the 7820x and showing high temps and power use. The worst binned parts obviously end up as a 7800x. I would hence avoid that at all cost.

