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New Contributor I
1,903 Views

DX79TO And PCIE 3.0

Hello All,

I am using a DX79TO with an i7 3930k.

I want to purchase a Radeon HD7870XT and that card uses PCIE 3.0.

The box of my DX79TO has an * by the PCIE 3.0 saying it would work with processor that supports PCIE 3.0.

So would the i73930k enable PCIE 3.0 support on this board.

Thanks

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38 Replies
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Community Manager
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Hello warpspeed,

 

The motherboard will work at PCI Express* 16x revision 3.0 bus speeds when using a third generation processor.

 

In your case, the processor will support the PCI Express* 16x revision 3.0.

 

Regards. 

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New Contributor I
41 Views

Hello,

Your answer was rather confusing.So does it or does it not support PCIEx16 3.0

Thanks

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New Contributor II
41 Views

With all do respect to Victor "I've read his post & that guy is a guru when it comes to MBs". However, there is no 3rd Generation processor for that specific board yet. It's LGA 2011 & currently supports the Intel i7 2nd Gen. processors only.

As to warspeeed's question.

No Your card will work in PCIE 2.0

Nvidia has released a fix to force enable the card to run in PCIE Gen. 3.0. I don't know if it's there is one for the Radeon cards.

PLS note that you will not see any performance difference between Gen. 2.0 & Gen 3.0 using that specific card you mentioned.

Unless you are using a very high end card with a dual GPU like the GTX 690 you will not loose any performance. PCIE Gen. 3.0 isn't being fully utilized, even with high-end Cards.

Pls don't hesitate if you need more advice or any information

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New Contributor II
41 Views

Well it's not a simple yes or no answer.

However, to answer your question:

Officially at the moment, due to the CPU limitation your board will NOT support PCIE 3.0

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New Contributor I
41 Views

Why is it printed on the board saying that it will be enabled with a processor supporting it if IB-E is not even going to be a LGA 2011 chip.

It is just misleading.

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New Contributor I
41 Views

Its not that is a cheap CPU.Why is it then a limitation.This can easily be implemented via a BIOS update.

I feel Intel owes us(the customers) this.The CPU does support the bandwidth needed.

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New Contributor I
41 Views

Can we expect an official fix in a further BIOS update?

That would be the best solution for the problem.

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41 Views

hello,

The support of PCIe 3.0 it not something that can be simply added with a BIOS update as it is set by the electronic design.

So far there are no plans to release processor models supporting PCIe 3.0 to work with the X79 chipset based motherboards.

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New Contributor II
41 Views

Dear Sylvia,

The processors on LGA 2011 do support the PCIE Gen 3.0 but not out of the box.

I am able to run my two 680 GTX in Gen 3.0 using the Nvidia Force enable... & with a few tweaks I was able to run my LSI Mustang RAID card on Gen. 3.0

On DX79SI

Why Intel in their infinite wisdom decided to disable the PCIE 3.0, I don't know!! Maybe, they are planning for something in the future "e.g. Ivy Bridge-E which we can have those processors on our boards via a BIOS update"

Just maybe....

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New Contributor I
41 Views

Hello,

Then why does the motherboard box state that PCIE 3.0 will be supported with a compatible processor?

If Nvidia can force this board to work at 3.0 why can't Intel release a fix officially, when the board does have the necessary bandwidth to support this functionality?

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New Contributor II
41 Views

Dear warpspeed,

If you are worried about the performance of the GFX card you mentioned. Trust me there will be no compromise in performance what so ever.

Maybe this link will help:

http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/49646-amd-radeon-hd-7970-3gb-review-21... AMD Radeon HD 7970 3GB Review - Page 21

PS If you are going to buy a new GFX card I strongly advise you to buy the Nvidia 680 or the 670 "if you are on a budget". You spent a good amount on your CPU, I don't know about your other configs; so you might go ahead with a good compatible GPU.

Word of advice don't' go for the ASUS cards as there are some incompatibility when it comes to the BIOS of the Intel manufactered X79 boards & the BIOS of the NEW ASUS GFX cards

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New Contributor I
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My question(problem) is simple.Does the DX79TO support PCIE 3.0 or does it not.

If it does not then why does the packaging say that it will.

If Nvidia can force it to work with SB-E why can't intel issue a bios update that enables it.

This is a high end Cpu.I think people who have purchased the components deserve to enjoy the benefits of an official fix.

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41 Views

Hello Warpspeed,

We escalated the case to our engineers department. I would have an update very soon.

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New Contributor I
41 Views

Thank Mike_Intel for a positive reply.I hope this can be natively enabled since it obviously can be forced.

Please keep the thread updated so we know what kind of work is being done with regards to this problem.

Thanks again.

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New Contributor II
41 Views

@warpspeed

If they really gave us the option so we can use the PCIE 3.0 like other board manufacturers are doing then you deserve a reward.

For example on Asus boards you have the option to enable the PCIE 3.0 in the BIOS. I hope Intel will do this as well.

Not to mention we were promised a video BIOS as well. However, if they give us either one you deserve a reward warpspeed.

Btw, have you made up your mind about which GFX card you wanna get?

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41 Views

Hi,

please refer the link for tested peripherals. http://www.intel.com/support/motherboards/desktop/dx79to/sb/CS-032974.htm http://www.intel.com/support/motherboards/desktop/dx79to/sb/CS-032974.htm

Graphics cardsATI*PCIEx16 VGAEAH4650H/DIV/1G/GB/ODM R1.00ATIPCIEx16 VGAEAH4850/2D/1G/CM/HP R1.00 ATIPCI VGARAGEXLS rev:1.03EVGA*PCIEx16 VGAE-GEFORCE 9800GTX 512M DDR3 MSI*PCIEx16 VGAGFX D10M2 TOPI LP 1GB/KIT 602-V191-02S/533126MSIPCIEx16 VGAEN9600GT 512MNvidia*PCIEx16 VGAGFX GT330 2GB ATX-HYNIX 288-30N58-110AC/VGNVidiaPCIEx16 VGAGTS250/2D/1G R1.02 NVidiaPCIEx1 VGA8400GSPowercolor*PCIEx16 VGAHD4850SamsungPCIEx16 VGAGFX GT340 1GB ATX-SAMSUNG 288-1N143-110AC/VG

 

Thanks,

- Ravi

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New Contributor I
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Not doing this for a reward.I have been using Intel components for quite a while now and they have always been reliable and the new extreme range has some great features although not on the same level as other board manufacturers it is more reliable.I just think people who have gone with Intel boards deserve to milk the full potential of these boards.

I would mostly be going with the Radeon card because of its wider memory interface.Trying to decide between a Radeon and a Quadro now.The pro series are more suited to my needs but they are too expensive.Trying to look for used ones.

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New Contributor I
41 Views

By Video Bios do you mean UEFI bios? Like the one Asus has?

According to the Motherboard Packaging this board is supposed to feature Advanced UEFI Bios.All I can see is the old BIOS.I cant see any mention of UEFI in the bios either.

Asus UEFI which has an advanced GUI etc and you can see UEFI plastered all over the BIOS.Another instance of Intel short changing us, isn't it.

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New Contributor II
41 Views

No I meant a Visual BIOS e.g. http://www.intel.com/content/www/us/en/motherboards/desktop-motherboards/desktop-boards-software.htm... Intel® Desktop Boards Software

UEFI is to support drives of 2TB & up. Enabling the UEFI in the Intel X79 boards does nothing more. Unlike the BIOS in Gigabyte & Asus

Not to mention that when you enable UEFI the OS gets installed in a different way.

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