Pcie bus compatability

SEMAJJ_7 · Feb 21, 2017

Swapping out of an alien ware x51 r2 case to a corsair case,
But just wanted to know if the ASUS h81m plus https://www.asus.com/au/Motherboards/H81MPLUS/specifications/

Will work with a gtx 1060
http://www.gigabyte.com.au/Graphics-Card/GV-N1060G1-GAMING-6GD-rev-10#

Just confused about the pcie slot, the mother board says it has a pcie x16 slot, but the graphics card says it uses a pcie 3.0 x16??

Thanks in advanced

The_Staplergun · Feb 21, 2017

Any PCIe card will work in any PCIe slot. It's all backwards compatible. What this is, is that it might not get as much bandwidth, which would slow it down a little.

Does it say it's PCIe x16 1.0?

Pau___Hkui · Feb 21, 2017

it will work but it will be a very small bottleneck, barely noticeable since the pcie x16 is only version 2.0 which is a tad slower than the current gen 3.0 pcie slots.

TJ Hooker · Feb 21, 2017

[strike]The PCIe x16 slot on that mobo runs at PCIe 3.0, so there will be not bottleneck. Don't know why the mobo specs don't list the PCIe revision for the x16 slot, but that mobo supports Haswell/Broadwell CPUs, and all of those have 16 PCIe 3.0 lanes to the CPU.[/strike]

Edit: Incorrect.

Pau___Hkui · Feb 21, 2017

TJ Hooker :

source on the pcie 3.0 slot?

TJ Hooker · Feb 21, 2017

My apologies, I was wrong. It it is PCIe 2.0 for the H81 chipset. I thought that CPU direct PCIe lanes were independent of the chipset, but it looks like Intel decided to gimp it somehow for the low end H81 chipset.

ko888 · Feb 21, 2017

Clearly the PCIe x16 slot is Gen. 3.

Intel H81 chipset block diagram directly from Intel:

TJ Hooker · Feb 21, 2017

@ko888 I don't see how that block diagram is particularly useful here, as the relevant PCIe lanes are the ones that go directly to the CPU (rather than through the PCH), which that diagram describes as "PCIe Gen 3.0 with 16 Lanes" going to the CPU, which isn't true for H81.

ko888 · Feb 21, 2017

TJ Hooker :

That image is directly from Intel's own server. You haven't provided any information to prove otherwise that the information on that image is wrong.

The PCIe x16 slot has a full 16 lanes wired to it. The Intel H81 chipset can only provide 6 to 8 PCIe Gen 2.0 lanes. It couldn't be any clearer.

The OP wants to know if the PCIe x16 slot on the motherboard is PCIe 3.0 x16 and it definitely is.

TJ Hooker · Feb 21, 2017

ko888 :

http://ark.intel.com/products/75016/Intel-H81-Chipset

Supported Processor PCI Express Port Revision: 2

The x16 slot is PCIe 2.0, as @Pau___Hkui said.

The_Staplergun · Feb 21, 2017

Look, like I said. Yes it works. Might be slower than a 3.0, but not a whole lot.

RobCrezz · Feb 21, 2017

ko888 :

TJ Hooker :

That image is directly from Intel's own server. You haven't provided any information to prove otherwise that the information on that image is wrong.

The PCIe x16 slot has a full 16 lanes wired to it. The Intel H81 chipset can only provide 6 to 8 PCIe Gen 2.0 lanes. It couldn't be any clearer.

The OP wants to know if the PCIe x16 slot on the motherboard is PCIe 3.0 x16 and it definitely is.

The x16 slot on a H81 motherboard is PCI-e 2.0, not 3.0.

ko888 · Feb 21, 2017

The PCIe x16 slot on the ASUS H61M-PLUS is the only PCIe x16 slot on the motherboard and it's wired directly to the CPU socket. The H61 chipset does not have 16 PCIe lanes no matter what you may believe. Even the link to the Intel web page, that @TJ Hooker provided, says that the H61 chipset only supports x1, x2, x4.

RobCrezz · Feb 21, 2017

ko888 :

Thats cool, but I thought we were talking about the H81.

Ive done builds on H81 boards, gpu in the x16 slot always shows up pci-e 2.0.

http://ark.intel.com/products/75016/Intel-H81-Chipset

TJ Hooker · Feb 21, 2017

ko888 :

...What? Look at the "I/O Specifications" section (not the "Expansion Options") section of the page I linked.

ko888 · Feb 21, 2017

TJ Hooker :

I stand corrected. I didn't read the fine print. The part that says:

Supported Processor PCI Express Port Revision

Revision indicates the PCI express specification to which the processor port is enabled. Note: The processor's actual PCI express revision will be determined or limited by the value of this chipset attribute, even if the processor is designed to a higher revision.

Intel's H81 chipset block diagram is definitely a lie, then.

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