CPU LANES?

[SSJ4_Crashzero]

I am thinking about upgrading my cpu.  I Have a 1080ti, and an intel 900p pcie memory storage card  PCIe* x4.

 

I want the 1080ti to have full access to the 16 lanes and the 900p looks like its 4 lanes, please correct me if I'm wrong or missing something.

If i was to get a 8700k or 9900k it says they are 16 lanes. so this wont be enough right. i know that it can step the gpu down to 8 lanes, but you know how it is. Maximum power. the intel page says the 9900k is 16 lanes, but the digital image market push says 40* lanes. also i heard motherboards have lanes too. this is why i am confused.

 

Please help me  

 

 

[Mira Yurizaki]

Unless you plug in an PCIe device into a PCIe slot meant for graphics cards, the the PCIe device will use the lanes from the PCH, not the CPU.

 

The breakdown of the number of PCIe lanes is this: 16 from the CPU, 24 from the PCH. The PCH talks to the CPU via an effective PCIe 3.0 x4 bus, but unless you're doing something that's saturating RAM or RAM saturating some I/O device(s) on the PCH, this isn't really an issue.

[Fasauceome]

The chipset has lanes too, I'm assuming you have a z370 board or something? You will have enough bandwidth. PCIe storage doesn't draw from the CPU.

[SSJ4_Crashzero]

thanks yeah i have x79 with 3820, i know ill have lots of stuff to buy along with cpu too cheers for the speedy reply.

[SSJ4_Crashzero]

worth upgrading 3820? or wait for 10nm.?

[Fasauceome]

1 minute ago, SSJ4_Crashzero said:

thanks yeah i have x79 with 3820, i know ill have lots of stuff to buy along with cpu too cheers for the speedy reply.

Oh I see. My bad, but you will still be able to use an m.2. however, x79 doesn't support booting from m.2

[SSJ4_Crashzero]

5 minutes ago, M.Yurizaki said:

Unless you plug in an PCIe device into a PCIe slot meant for graphics cards, the the PCIe device will use the lanes from the PCH, not the CPU.

 

The breakdown of the number of PCIe lanes is this: 16 from the CPU, 24 from the PCH. The PCH talks to the CPU via an effective PCIe 3.0 x4 bus, but unless you're doing something that's saturating RAM or RAM saturating some I/O device(s) on the PCH, this isn't really an issue.

ooooh i better check which slot my 900p is. its in the second slot so i bet thats an issue. thanks that expanded my knowledge for sure cheers.

[SSJ4_Crashzero]

X79-ud3 straight from gigabyte website. does this mean 1 and 2 are cpu lanes and 3 and 4 are mobo lanes or PCH. or is my motherboard ancient and this is something entirely different

 

1. 2 x PCI Express x16 slots, running at x16 (PCIEX16_1, PCIEX16_2)
   * For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
2. 2 x PCI Express x16 slots, running at x8 (PCIEX8_1, PCIEX8_2)
   * The PCIEX8_2 slot shares bandwidth with the PCIEX16_2 slot. When the PCIEX8_2 slot is populated, the PCIEX16_2 slot will operate at up to x8 mode.
   (All PCI Express x16 slots conform to PCI Express 3.0 standard.)
3. 2 x PCI Express x1 slots
   (All PCI Express x1 slots conform to PCI Express 2.0 standard.)
4. 1 x PCI slot

[Mira Yurizaki]

If it's an x16 slot with at least 8 lanes available to it, it's likely coming from the CPU.

[LienusLateTips]

x8/x16 doesn't actually matter even still