Linux drivers point to a dual card

Once again, the Linux drivers are in charge of revealing information about new AMD graphics cards, this time mention is made of a supposed card with two Vega GPUs and a liquid cooling system, it is therefore a very similar to the Fiji-based Radeon Duo Pro.

AMD would be preparing a card with two Vega cores

A May 10 Linux patch has added information about new devices based on the Vega architecture, 0x6864 and 0x6868. There are two lines in particular in the found code that are especially interesting and that involve the presence of liquid cooling:

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

"Tliquid1Limit" and "Tliquid2Limit" could point to two different temperatures of the same GPU or to the temperatures of two different GPUs. In the first case it would be related to the TDP of the graphics card and its base and turbo speeds. The second hypothesis is more interesting and would be pointing to a new card based on a dual GPU configuration. There is another detail that makes the second hypothesis take more strength.

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

The previous line refers to the PLX bridge that is the one used to interconnect two GPUs on the same PCB, that is, it is the communication interface used on cards with two GPUs so that they can communicate with each other.

New Vega 10 performance test in 3DMark FireStrike

The idea of ​​a new graphics card with two GPUs is not far-fetched, and in recent years we have had the Radeon HD 7990, the Radeon R9 295X2 and the Radeon Pro Duo, all based on top-of-the-range AMD chips in their moment. So it is to be expected that with Vega we will also see a dual GPU solution to achieve the crown of performance. It is possible that Vega does not reach the performance of Pascal so AMD could resort to mounting two cores on a card to overcome its rival.

Source: techpowerup