Alternate Articles:

• https://videocardz.com/newz/amd-announces-radeon-rx-7800-xt-16gb-and-rx-7700-xt-12gb-graphics-cards
• https://wccftech.com/amd-radeon-rx-7800-xt-16-gb-graphics-card-official-16-gb-full-navi-32-gpu-for-499-us-faster-than-rtx-4070/

Summary: This was on Linux using kernel mitigations. The performance impact can be very significant to some workloads, like databases and compression, but most users likely will not notice any impacts.

While Herkelman didn’t specify what those “major” announcements could be, AMD is due to launch new Radeon RX 7000-series graphics cards sometime this year. During an earnings call earlier this month, AMD CEO Lisa Su said the company will reveal “enthusiast-class Radeon 7000 series cards in the third quarter” of 2023.

This part is interesting:

For the iGPU side, the AMD Ryzen 8000 "Strix Point" APUs will be configured with the AMD RDNA 3.5 GPU cores with 8 WGP's (Work Group Processors) and a total of 16 Compute Units for up to 1024 stream processors. That's a 33% increase in the number of stream processors and if clock speeds will remain the same at around 2.8-3.0 GHz range, we can expect up to 12 TFLOPs FP32 compute horsepower which will mark a 42% increase over the current fastest RDNA 3 iGPU, the Radeon 780M.

It seems AMD might be shifting its focus towards the mid-range segment (once gain), with the introduction of a new successor to the RDNA3 architecture. This move would bring AMD back to its roots when the company prioritized the mid-range segment with RDNA1/Polaris.

Since the API change RiF was still usable in logged-out mode, however, it's now consistently not loading posts anymore. They recently updated the "logged-out user experience" (see link below), which may have also been used to finally kill any RiF stragglers.

Good news is that Sync for Lemmy just released so the transition on mobile is finally easy!

The US government profiles a variety of air quality sensors (VOCs, particulates, etc) and publishes their findings on the South Coast AQMD. These sensors are generally profiled by both lab and field testing and the statistical 'r' values are published.

Some of these sensors are consumer and there are lots of very expensive industrial ones as well. Do note that some sensors may not be "consumer" but are included in consumer products, such as Sensirion sensors being used in consumer products.

Summary - Particulate Sensors

Summary - Gas Sensors

This post is an expanded guide from a previous Reddit post that had some purifier-related calculations.

What is CADR

CADR (clear air delivery rate) is a value reflecting the effective filtration rate of a purifier where larger values means the purifier can filter larger rooms. Manufacturers will usually disclose their claimed CADR value, which is often given as three values representing different air contaminant types.

In addition to effective filtration rate, CADR is also used in determining sizing purifiers to rooms as it is a figure of merit that quantifies the effective volumetric flow rate of clean air. WARNING: While this is a figure of merit, it also represents a theoretical volumetric flow rate of 100% clean air which means that it can be in units of cubic feet per minute (