16 PCI-e 3.0 Limit

[The_Denks]

Hello there

 

I understand a fair amount PC's, I have built several

However, one thing I don't get is why SKylake is stuck with the 16 lane limit, while Haswell has up to 40.

 

 

Thanks

Callum

 

[Enderman]

because haswell does NOT have 40 PCIe lanes

 

haswell-e does

 

and skylake-e doesnt exist yet

broadwell-e is coming first

[Moonzy]

Haswell / Skylake = 16 lanes

Haswell-E = 40 lanes

 

why 16 lanes? because those who can afford things to fill more than 16 lanes can afford Haswell-E, simple

[RedWulf]

If I'm not mistaken some chipsets take it up to 20 

either way, as mentioned above wait for the next run of skylake before making real comparisons of micro-archs

http://www.anandtech.com/show/8426/the-intel-haswell-e-cpu-review-core-i7-5960x-i7-5930k-i7-5820k-tested

[Sakkura]

7 minutes ago, RedWulf said:

If I'm not mistaken some chipsets take it up to 20

The CPU has 16 lanes, the Z170 chipset adds another 20. Technically 36 lanes overall, but the ones on the chipset would get bottlenecked if you tried to use all that bandwidth simultaneously.

 

Haswell-E has 28 or 40 on the CPU, plus 8 lanes on the X99 chipset, for a total of 36 or 48 lanes (technically). But those lanes on the X99 chipset are PCIe 2.0, where the ones on the Z170 chipset are PCIe 3.0 and thus twice as fast.

[Glenwing]

1 hour ago, UberGamerKing said:

Hello there

 

I understand a fair amount PC's, I have built several

However, one thing I don't get is why SKylake is stuck with the 16 lane limit, while Haswell has up to 40.

 

 

Thanks

Callum

 

Intel makes 2 main designs for each CPU architecture, a mainstream line and a high-end line.

 

Sandy Bridge (socket 1155):    16 PCIe 2.0 lanes

Ivy Bridge (socket 1155):         16 PCIe 3.0 lanes

Haswell (socket 1150):             16 PCIe 3.0 lanes

Broadwell (socket 1150):          16 PCIe 3.0 lanes

Skylake (socket 1151):             16 PCIe 3.0 lanes

 

Sandy Bridge-E (socket 2011): 40 PCIe 3.0 lanes

Ivy Bridge-E (socket 2011):      40 PCIe 3.0 lanes

Haswell-E (socket 2011-3):       40 PCIe 3.0 lanes

Broadwell-E (socket 2011-3):   40 PCIe 3.0 lanes (presumably; not released yet)

Skylake-E (socket ???):           40 PCIe 3.0 lanes (presumably; not released yet)

[The_Denks]

44 minutes ago, Glenwing said:

Intel makes 2 main designs for each CPU architecture, a mainstream line and a high-end line.

 

Sandy Bridge (socket 1155):    16 PCIe 2.0 lanes

Ivy Bridge (socket 1155):         16 PCIe 3.0 lanes

Haswell (socket 1150):             16 PCIe 3.0 lanes

Broadwell (socket 1150):          16 PCIe 3.0 lanes

Skylake (socket 1151):             16 PCIe 3.0 lanes

 

Sandy Bridge-E (socket 2011): 40 PCIe 3.0 lanes

Ivy Bridge-E (socket 2011):      40 PCIe 3.0 lanes

Haswell-E (socket 2011-3):       40 PCIe 3.0 lanes

Broadwell-E (socket 2011-3):   40 PCIe 3.0 lanes (presumably; not released yet)

Skylake-E (socket ???):           40 PCIe 3.0 lanes (presumably; not released yet)

This is what I wanted to see. Thanks