When AMD introduced Smart Access Memory technology exclusively for its platform and graphics, Intel and Nvidia announced that they would enable the same on their systems. The first graphics that reBAR supports is the RTX 3060. And we will try it on the older Intel X299. It works!
Resizable BAR for everyone!
AMD also announced Smart Access Memory technology with the launch of the 6000 Series Radeons and the new Ryzens. SAM is a feature that allows you to streamline the transfer of data from the computer’s operating memory to the graphics card’s memory. AMD has taken this step because it knows that the narrow bus of the new Radeons, despite the Infinity Cache system, is in some cases a limiting factor in performance. We will talk more about this function in a separate chapter.
Of course, when the competition saw that AMD would be able to squeeze some extra power out of its platform, they also needed to have it. Nvidia immediately announced that it would also make this feature available on its graphics. Although I personally think it doesn’t make sense for high-end graphics with a wide bus and fast GDDR6X. That’s why Nvidia is the first to offer this feature on the low end RTX 3060 and mobile chips, where it makes sense (they have a 192-bit and 256-bit bus). Although it was announced that higher-class RTX will be available, but I guess the impact on performance is very small and unnecessary. But we will see.
After Nvidia, Intel also rushed to announce support, and I must say that he did not lie. The update frequency of the microcode of its processors is unprecedented and unusually frequent. The condition for the correct function is the current microcode update of your processor, which we will also discuss in more detail in one of the chapters. So at the moment, SAM is working on the AMD 500 platform (400 if the BIOS) with Radeons 6000 and Ryzen 5000 processors. AMD also plans to support Ryzens 3000/2000.
Older Intel chipsets as well
Quite surprisingly, this technology is not limited to PCIe 4.0 platforms. Which are just AMD and Intel Z590 / Rocket Lake, but also older Intel processors and chipsets. Asus, MSI, EVGA and Gigabyte have announced that they will also introduce support for Z390 and Z490 chipsets. Of course, only for selected higher class boards. Obviously, neither the processor nor the PCIe version matters. The highest models of the X299 platform will also support this feature. Beta BIOS has already been released and since I still use this platform, I will try it on it as one of the oldest. This will tell us if it’s worth waiting for this feature to be added to older Z300 series boards. Other board manufacturers will be in a similar situation, and I expect a campaign from mid-month to support this feature for many manufacturers.
Wondering why from the middle of the month? In February, Nvidia announced that in the second half of this month, it will be possible to download vBIOS for other Founders Edition cards from the GeForce RTX 30 series. At the same time, drivers and BIOSes for some boards are now available for download. It is too early to evaluate whether Nvidia will fulfill it and manage to present everything by the end of the month. I take this article as the first part of two. In this we will focus on the PCIe 3.0 X299 platform and in the second I will test the same on a PCIe 4.0 Z590 with a Rocket Lake Core i9-11900K chip. We’ll see if there is a difference in performance on this platform. In the meantime, a colleague is also preparing a test on an Intel Comet Lake with a Radeon 6000 and RTX 3060, but I intend to test the Resizable BAR only on GeForce.
Comments can be found at the end of the last chapter.
Source: PCTuning.cz RSS by pctuning.tyden.cz.
*The article has been translated based on the content of PCTuning.cz RSS by pctuning.tyden.cz. If there is any problem regarding the content, copyright, please leave a report below the article. We will try to process as quickly as possible to protect the rights of the author. Thank you very much!
*We just want readers to access information more quickly and easily with other multilingual content, instead of information only available in a certain language.
*We always respect the copyright of the content of the author and always include the original link of the source article.If the author disagrees, just leave the report below the article, the article will be edited or deleted at the request of the author. Thanks very much! Best regards!