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Guru3D.com » News » Radeon Linux Driver Shows Possible LCS based Dual GPU VEGA

Radeon Linux Driver Shows Possible LCS based Dual GPU VEGA

by Hilbert Hagedoorn on: 05/11/2017 03:38 PM | source: | 8 comment(s)
Radeon Linux Driver Shows Possible LCS based Dual GPU VEGA

It is not the first time that a set of Linux drivers reveal a thing or two about unannounced products. In the latest leak they now indicate the existence of a liquid cooled Vega, which we already knew but also a dual-GPU version.

There’s a number of things that come to mind though, AMD might be pursuing a new Radeon Pro based dual-GPU product, but the existence of these entries in the drivers are interesting.

So what happened? Well the 10th Linux patch update includes two new device ID's that can be tied to the Vega product codenames: 0x6864 and 0x6868. That’s nothing less than nine Hardware_ID that have been spotted over the past months. In the code two lines are rather interesting:

  • table->Tliquid1Limit = cpu_to_le16(tdp_table->usTemperatureLimitLiquid1);
  • table->Tliquid2Limit = cpu_to_le16(tdp_table->usTemperatureLimitLiquid2);

Then there is this bit:

  • table->FanGainPlx = hwmgr->thermal_controller. advanceFanControlParameters.usFanGainPlx;
  • table->TplxLimit = cpu_to_le16(tdp_table->usTemperatureLimitPlx);

As you can see, that mentions PLX twice, a PLX chip is an interconnect inbetween the two GPUS, much like PCIe Express lanes. All signals are green, (or red hah!) that AMD will be unveiling Radeon RX Vega to the masses soon enough, May 16th there likely will be a set of announcements. The dual-GPU version might in fact become the flagship Radeon video card as indications thus far have shown Vega to perform at the 1070 ~1080 performance bracket from the competition.







« Lian Li ROG-Certified PC-O11WGX With Expanded Bundle and PCIe Riser · Radeon Linux Driver Shows Possible LCS based Dual GPU VEGA · Corsair Launches Dominator Platinum Special Edition Torque DDR4 Memory »

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chronek
Senior Member



Posts: 184
Joined: 2016-09-19

#5430597 Posted on: 05/11/2017 03:49 PM
still can not reach apex...

Rich_Guy
Senior Member



Posts: 12763
Joined: 2003-05-11

#5430605 Posted on: 05/11/2017 04:02 PM
The 1080 Ti competitor. :P

superzeus
Senior Member



Posts: 221
Joined: 2011-12-05

#5430616 Posted on: 05/11/2017 05:08 PM
Lol they need 2 gpus for compete against single nvidia gpu , not good.

JamesSneed
Senior Member



Posts: 1425
Joined: 2017-02-14

#5430627 Posted on: 05/11/2017 05:24 PM
Vega

@superzeus, We don't know how this performs so your conclusion is a bit premature. For all we know you could be right or this PLX setup could stomp everything Nvidia has to offer.

This reminds me of AMD's approach with Ryzen by having dual CCX's. They are not making huge monolithic chips, instead they are tying two medium sized chips together in a fairly efficient way. I hope it works out as we need AMD back for innovation and/or pricing.

All I know this is turning out to be a damn good year to be a tech enthusiast with Ryzen, Skylake-X, Coffee Lake 6 core news, Vega and a small possibly Volta very end of year.

riot83
Senior Member



Posts: 123
Joined: 2015-02-13

#5430657 Posted on: 05/11/2017 06:06 PM
@superzeus, We don't know how this performs so your conclusion is a bit premature. For all we know you could be right or this PLX setup could stomp everything Nvidia has to offer.

This reminds me of AMD's approach with Ryzen by having dual CCX's. They are not making huge monolithic chips, instead they are tying two medium sized chips together in a fairly efficient way. I hope it works out as we need AMD back for innovation and/or pricing.

All I know this is turning out to be a damn good year to be a tech enthusiast with Ryzen, Skylake-X, Coffee Lake 6 core news, Vega and a small possibly Volta very end of year.

I remember a Raja interview around a year ago, during the original Polaris launch. In that interview Raja mentioned that GPU's will have to the same route as the CPU's since we're reaching the limits of single chip solutions. He said the future will be multi core gpus. I think thats why the made the Radeon Pro(or something like that) to get more developers using multi gpu's in developing.

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