Good news, the new upcoming 8-core Coffee lake part might be based on an existing architecture they are however based on new silicon, Intel has been able to apply a number of Meltdown fixes, solved the hardware.
So yes, the 9th Gen Core i7/i9 processors feature a number of hardware mitigations, as discovered on Anandtech today. The i9-9900K, the i7-9700K, and the i9-9500K simply put are based on new silicon designs and Intel has been able to implement fixes for variant 3 (rogue data cache load) and L1 terminal fault on a hardware level. The Core-X Skylake-X that have been announced will NOT get these fixes are they are based on the existing design. I do reiterate, there are some hardware fixes, just for meltdown, not Spectre.
| Spectre and Meltdown on Intel | |||||||
| SKX-R 3175X |
CFL-R | Cascade Lake | Whiskey Lake |
Amber Lake |
|||
| Spectre | Variant 1 | Bounds Check Bypass | OS/VMM | OS/VMM | OS/VMM | OS/VMM | OS/VMM |
| Spectre | Variant 2 | Branch Target Injection | Firmware + OS | Firmware + OS | Hardware + OS | Firmware + OS | Firmware + OS |
| Meltdown | Variant 3 | Rogue Data Cache Load | Firmware | Hardware | Hardware | Hardware | Firmware |
| Meltdown | Variant 3a | Rogue System Register Read | Firmware | Firmware | Firmware | Firmware | Firmware |
| Variant 4 | Speculative Store Bypass | Firmware + OS | Firmware + OS | Firmware + OS | Firmware + OS | Firmware + OS | |
| Variant 5 | L1 Terminal Fault | Firmware | Hardware | Hardware | Hardware | Firmware | |
* table courtesy Anandtech
