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Intel Updates Its ISA Manual with Advanced Matrix Extension Reference

Intel today released and updated version of its "Architecture Instruction Set Extensions and Future Features Programming" Reference document with the latest advanced matrix extension (AMX) programming reference. This gives us some insights into AMX and how it works. While we will not go in too much depth here, the AMX is pretty simple. Intel describes it as the following: "Intel Advanced Matrix Extensions (Intel AMX) is a new 64-bit programming paradigm consisting of two components: a set of 2-dimensional registers (tiles) representing sub-arrays from a larger 2-dimensional memory image, and an accelerator able to operate on tiles, the first implementation is called TMUL (tile matrix multiply unit)." In other words, this represents another matrix processing extension that can be used for a wide variety of workload, mainly machine learning processing. The first microarchitecture that will implement the new extension is Sapphire Rapids Xeon processor. You can find more about AMX here.
Intel AMX

NVIDIA Ampere Cooling Solution Heatsink Pictured, Rumors of Airflow Magic Quashed

Although still a blurry-cam pic, this new picture of three GeForce RTX 3080 "Ampere" graphics card reference heatsinks on a factory-floor reveals exactly how the cooling solution works. The main heat-dissipation component appears to be a vapor chamber base, above which there are four flattened copper heat pipes, which hold the cooler's four aluminium fin arrays together. The first array is directly above the CPU/memory/VRM area, and consists of a dense stack of aluminium fins that make up a cavity for the fan on the obverse side of the graphics card. This fan vents air onto the first heatsink element, and some of its air is guided by the heatsink to two trapezium shaped aluminium fin-stacks that pull heat from the flattened heat pipes, and get airflow from the obverse fan.

The heat pipes make their way to the card's second dense aluminium fin-stack. This fin-stack is as thick as the card itself, as there's no PCB here. This fin-stack is ventilated by the card's second fan, located on the reverse side, which pulls air through this fin-stack and vents upward. We attempted to detail the cooling solution, the card, and other SKU details in an older article. We've also added a picture of a Sapphire Radeon RX Vega 56 Pulse graphics card. This NVIDIA heatsink is essentially like that, but with the second fan on the other side of the card to make it look more complicated than it actually is.

AMD To Continue Offering Reference Design for RX 5700, RX 5700 XT

With the introduction of AMD's AIB partners' custom designs for the Navi-based RX 5700 and RX 5700 XT graphics cards, rumors (ie, reports) started to float around of AMD's discontinuation of their reference designs. However, AMD's own Scott Herkelman confirmed via Twitter that the company isn't transitioning its reference designs to an EOL (End of Life) status, and that they will continue to be offered in the traditional venues.

However, Scott did say that AMD is in the stage of transitioning their AIB partners fully to their own custom designs. This means that AMD will likely keep the market cornered on blower-style designs, that can be bought by users planning to stick their own aftermarket cooling solution and just want the cheapest possible card. This way, AIB partners will always sell Radeon cards under their own brand names, instead of something like "ASUS Radeon RX 5700".
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