According to a fresh leaked manual from Gigabyte's X99 Express based motherboards confirms the earlier report regarding Intel's cheapest six-core Core i7-5820K Haswell-E CPU and the fact that it features fewer PCI-Express lanes when compared to the Core i7-5930K and the flagship Core i7-4960X.

While there has been some talk regarding the number of PCI-Express lanes on sub-$400 six-core Core i7-5820K Haswell-E CPU earlier, the newly leaked manual for Gigabyte's socket LGA2011-3 X99 Express chipset based motherboards confirms that the cheapest Haswell-E HEDT CPU will indeed have fewer PCI-Express lanes, 28 to be precise. While the Core i7-5930K and the flagship Core i7-4960X will feature full 40-lane PCI-Express gen 3.0 root complex, the Core i7-5820K will end up with a narrower 28-lane one, putting it in line with standard LGA1150 Haswell platform.

When used with a motherboard that features three PCI-Express 3.0 x16 slots, the Core i7-5960X and the Core i7-5930K will be able to run two slots at x16 and third slot at x8 while the Core i7-5820K will be limited at x16, x8, x4 configuration. On motherboards with four PCI-Express 3.0 slots, fourth one will be disabled on the Core i7-5820K.

Of course, the Core i7-5820K will still be a great buy, especially since you get a six-core Haswell-based CPU with Hyper-Threading enabled, 12MB of L3 cache and quad-channel DDR4 interface and you will still be able to run both CrossfireX and Nvidia SLI with two graphics cards. Of course, if you are aiming for triple-GPU configuration, than two other Haswell-E CPUs will be the only choice.

You can check out the leaked manuals over via link below.

Source: Techpowerup.com.