Hardware support: Why not build a CPU fab on the wetter east coast rather than Arizona?

Why not build a CPU fab on the wetter east coast rather than Arizona?
Do the majority of aftermarket laptop batteries contain modified EEPROMs?
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Why not build a CPU fab on the wetter east coast rather than Arizona?

Posted: 17 Sep 2021 12:15 PM PDT

So as everyone knows by now Intel has major plans for CPU fabs in Arizona despite the major water shortages of the colorado river and arid climate that will create significant challenges for the water intensive process that is CPU manufacturing.

I've found justifications that state government sees the profitability of subsidizing it being worth it to reallocate scarce water resources to Intel.

My question is why didn't they choose to build elsewhere, such as near the Schuykill river or Delaware river on the east coast, or the Columbia River in the PNW which actually greatly exceeds the average flow by volume of the Colorado river?

submitted by /u/swashinator
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Do the majority of aftermarket laptop batteries contain modified EEPROMs?

Posted: 17 Sep 2021 09:51 PM PDT

A year ago the original battery in my Dell laptop was dying and I ordered a replacement one from Aliexpress. I made sure to choose one that was claimed to be OEM and was selling at nearly twice the price of similar third party ones. The vendor told me to check the serial number on Dell's website if I had any doubts.

Battery arrived. I checked it's SN and indeed it was a genuine from Dell. I Plugged it in-Windows batteryreport told me both full charge and design capacity were exactly 59994 mwh. I thought "wow! what a coincidence!"

Fast forward a year. I'm starting to see sudden charge level drop-offs when I'm below 10%. Full charge capacity is still 59994 of 59994. Precisely 0% wear.

At this point I'm starting to get suspicious. I browsed through the Aliexpress reviews and I found out I wasn't the only one-It doesn't matter if the battery is third-party A or third-party B or OEM. Almost every battery report screenshot I saw had a full charge capacity of 59994 MWh. I know from past experience that it is next to impossible to have a battery with identical actual and design capacities, even if it's brand new. Seeing a hundred in a row with the exact same reading is just wrong.

I did some research. It's not only Dell, there are aftermarket batteries from HP and Lenovo that have the same problem. Smart batteries store their data in EEPROM. As it turns out hacking a battery EEPROM is not only a known practice, there are online tutorials on how to do this all over the place. If you can trick a laptop into thinking a battery is OEM, then why not trick it into thinking a battery has 0% wear?

tl;dr: most aftermarket batteries, including the ones from OEMs, contain modified EEPROMs that trick them into being recognized as having 0% wear when they clearly don't.

submitted by /u/coffeefederation
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New fully homomorphic encryption accelerator chip design is predicted to be up to 17000x faster than the state of the art

Posted: 17 Sep 2021 01:19 PM PDT

submitted by /u/Sephr
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Nikkei Asia: "U.S. chipmaker GlobalFoundries to double auto chip output for 2021"

Posted: 17 Sep 2021 02:49 AM PDT

submitted by /u/Dakhil
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CNX Software: "A first look at Microchip PolarFire SoC FPGA Icicle RISC-V development board"

Posted: 17 Sep 2021 09:55 AM PDT

submitted by /u/Dakhil
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AMD Instinct MI300 accelerator might have an Exascale APU mode - VideoCardz.com

Posted: 17 Sep 2021 04:03 AM PDT