Can someone share about core i7 8 CPU?

Nehalem represents the largest architectural change in the Intel x86 family processors since the Pentium Pro in 1995. The Nehalem architecture has many new features. The first represents a significant change from the Core 2:
FSB is replaced by QuickPath interface in i7 (Socket 1366), and replaced in turn i7, i5 and i3 (Socket 1156) by eliminating the NorthBrige DMI and implementing PCI Express (16 lines total) directly, due to that is more complex and expensive. Motherboards must use a chipset that supports QuickPath. Currently only available for Asrock motherboards, Asus, DFI, EVGA, Gigabyte, Intel, MSI and XFX.
The memory controller is integrated on the same processor.
Three-channel memory (data width of 192 bits): each channel can support one or two DDR3 DIMMs. The motherboard compatible with Core i7 have four (3 +1) or six DIMM slots instead of two or four, and DIMMs must be installed in groups of three, not two.
Support for DDR3 only.
Turbo Boost: Allows different nuclei accelerated "smart" for themselves every 133 MHz above its official rate, while the thermal and electrical requirements of the CPU does not exceed the default.
Single-die device: All four cores, the memory controller and cache are within the same package.
HyperThreading reimplemented. Each of the four cores can process two tasks simultaneously, so the processor appears as eight CPUs from the operating system. This feature was present in the old Netburst microarchitecture introduced in the Pentium 4 HT.
Only one QuickPath interface: not designed for multiprocessor motherboards.
Process Technology 45 nm or 32 nm.
Transistors 731 million (1,170 million in the Core i7 980X, with 6 cores and 12 MiB cache).
Sophisticated power management can place an unused core mode energy.
Extremely high overclocking capability (you can accelerate smoothly up to 4 to 4.1 GHz).
Disadvantages

The Core i7, or at least motherboards for Core i7 sold from November 22, 2008, are not compatible with ECC (Error checking and correction) memory. Some experts, such as Daniel Bernstein, 7 recommends that support systems without ECC is not used for scientific computing, and generally not unless the user does not care about errors in critical data.
The Core i7 has a high consumption, almost double the previous ones, because 160W is able to spend it alone, with the consequent thermal problem. It therefore requires a box of quality and powerful power supply. For this reason we must keep in mind that the entire team, plus monitor, you may be consuming around 500 or 600 watts. Although it has a TDP of 130 W, being a feature disabled, its consumption is triggered. And consequently this high consumption makes it more difficult to bring this performance to laptops, facing and to only 2 or 3 hours of battery.
Processors

The clock speeds listed here are in normal mode. The single-core speed can be increased up to 400 MHz when the others are disabled.
The multiplier of the microprocessor automatically increased when conditions permit, the i7 920 goes from 20 to 21, if turbo mode is enabled.
The 965 XE has separate multipliers for memory and cores.
The memory speeds of DDR3-2000 are possible, but not supported by Intel.
Have been reported clock speeds up to about 4 GHz, but are not yet supported by Intel8
The processor has a Thermal Design Power of 130 W and will slow itself if it is exceeded. This feature can be deshabilitada.9
Core i7 models 920, 940 and 965 Extreme, which appeared on the market in November 2008 in 1,000 units with prices of 284, 562 and $ 999 respectivamente.