Integrated Graphics is built into the CPU has been for quite some time with the Core I3 I5 I7 processors.

Dell does not support CPU-Z or GPU-Z says or guarantee any fitness for a particular purpose.

INTEL ARK is the definitive source for actual processor and chip-set specifications.

@DELL-Chris M would have more information.

There is no argument because your information and assertions are wrong. You have posted zero specs from DELL or INTEL to validate your assertions.  Resizable bar will not be added to 5th gen Haswell-E or the X99 chipset.

Dell does not make bios on demand changes for users based on end of life hardware no longer in production for more than the standard 5 year system design life-cycle.

The argument that INTEL ARK and the Dell Specification site are marketing pages and not actual published specifications is also without merit.

INTEL Data Sheet for X99

Thank you for finding an Intel link.

I don't want to drag this up again, but I think you are both correct.

It supports both PCIe 3.0 and PCIe 2.0, pending on the available CPU lanes of the processor you use.

Here's the block diagram of the X99 chipset, directly from Intel: X99 block diagram 

It is PCIe 3.0 between the discrete graphics card(s), CPU and memory, while also PCIe 2.0 between the chip set and the rest of the supported IO, but the actual link between CPU and chipset is DMI 2.0 x 4.

Hi, I meant dumping the BIOS with a CH341a programmer. But it may be overkill, a software only solution like AMI flash utility should also be able to backup the BIOS.

Yes, there isn't any "Above 4G Decoding" option in the BIOS by default, more precisely, there is one but it is hidden and require a BIOS modification to unhide it. (thus the need to backup the BIOS in the first place).

But there is a simpler method which do not require to mess with BIOS dumps, boot to 'EFIShell' (there's plenty tutorials available on how to setup a USB key to do it), and type :

setup_var 0x24D 0x1

It will enable Above 4G Decoding. To re-disable it instead, follow the same method and type :

setup_var 0x24D 0x0

Hope it helps

Thank you Leole, I followed your instructions and boot into EFI shell, however, the setup_var command was not recognized. I have attached a screenshot, including the shell version, the error I get when typing that command, and the help of a command named setvar that sounds similar just in case I could use that?

I am googling it as well but wanted to ask your advice.

Hi thundermann !

I'm unsure if the setvar command could accept variable hex codes instead of variable names, so it may not work this way. I personally used that Efi Shell, if you format a USB key to FAT-32 and put the decompressed 'EFI' folder in it, you should be able to boot it and the setup_var command should be recognized this time. (For the record, this link comes from that thread.)

Let me know if it worked for you,

LeoLe

Hey LeoLe, I stumbled on a different shell last night, off the same bios-mods forum. So I tried both, the one you suggested, and this one.

1) The one you suggested -  I get errors on both parameters of setup_var, saying GUID doesn't match expected GUID.

2) The other bootx64.efi from bios-mods I get the same error - GUID doesn't match expected GUID.

I am assuming the 0x24D is the address or register of the setting for 4G decoding, is there a way to list them?

Do I have my hex value wrong somehow?

Edit: Ohh my, I noticed that I had my commands badly formed.  So I corrected them and got a result of Error: offset out of range.

Ohh my, I noticed after posting that my commands were not well formed, so I corrected them and tried again.  So I used the following:

setup_var 0x24D 0x1

setup_var 0x24D 0x01

setup_var 0x24D 0x10

Results:

Hey LeoLe, 

Looks like it is setting the value anyway, even though there is an error mentioning the offset is out of range, the register or whatever it is for that 4G Decoding BIOS flag is set to 0x1, and I can boot with 4+ GPUs. 

Thank you so much for your help!

I assume this is possible https://github.com/terminatorul/NvStrapsReBar

I have R1 with 9900k and 2080, I am going on journey to enable it. Will update this thread if I succeed.