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    Home Unlabelled Hardware support: The Framework Laptop, a fully repairable and upgradable laptop is available for pre-order in the US now!

    Hardware support: The Framework Laptop, a fully repairable and upgradable laptop is available for pre-order in the US now!

    May 17, 2021

    Hardware support: The Framework Laptop, a fully repairable and upgradable laptop is available for pre-order in the US now!

    The Framework Laptop, a fully repairable and upgradable laptop is available for pre-order in the US now!

    Posted: 16 May 2021 01:13 PM PDT

    [Igor's Lab] AMD Radeon RX 6600 XT with 8 GB memory - Exclusive details from internal slides and a first conclusion

    Posted: 16 May 2021 11:42 PM PDT

    [Tweakers.net] AMDs vs. Intel's PCIe Gen4 NVMe performance compared (article in Dutch)

    Posted: 16 May 2021 07:44 PM PDT

    "Turns out the "AMD PCI Driver" isn't actually a PCI Driver... at all."

    Posted: 16 May 2021 05:05 AM PDT

    So, here's a developing story, courtesy of @ Aionescu on Twitter

    Playing around with my first AMD Ryzen system. Turns out the "AMD PCI Driver" isn't actually a PCI Driver... at all. Here's a few fun facts:

    1) It registers a process creation notify routine, and checks all process names against a list of 19 hashed names.

    2) If it finds a match, it sets bit 5 in the 0xC0011021 [C001_1021] MSR, also called "Instruction Cache Configuration Register (IC_CFG)". This particular bit isn't documented anywhere (and there's no longer a BKDG for Ryzen). Who wants to guess what this might be about?

    3) But even better, it has a security descriptor allowing Everyone + Low IL r/W Access, and an IOCTL interface with absolutely no Probes/SEH, which yes, dereferences wild pointers. They don't even bother checking for input size or output sizes.

    4) This interface lets you check if there's any matches in its list of processes, as well as flush the lists, and add more hashes (for the duration of this boot). Yep, "AMD PCI Driver".

    What is it, exactly? A security vulnerability, a means to cheat in benchmarks or a means to optimize performance, spyware, something completely innocuous, none of the above, all of the above, or something else entirely? Get your popcorn ready.

    submitted by /u/consummatebawbag
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    Corsair teases DDR5-6400 memory, the technology to arrive later this year

    Posted: 16 May 2021 06:00 AM PDT

    Is there a rule of thumb in comparing Desktop and Mobile GPUs?

    Posted: 16 May 2021 11:32 PM PDT

    Is there a rule of thumb like "Generally, a mobile 2070S will give the same performance as a Desktop 1070" or similar? Completely disregarding RT etc. Just, if you take a 'generic' gaming laptop (not super chunky, not super expensive, not liquid nitrogen cooled) vs a 'generic' Desktop (decent CPU, better than horrible airflow, all-RGB setup for added crypto performance).

    submitted by /u/AnonAustria13
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    Taking a look at Thin Mini-ITX AM4 motherboards

    Posted: 16 May 2021 09:52 AM PDT

    Outage at Taipower’s Hsinta Power Plant Found to Have No Impact on Memory Fabs and Foundries, Says TrendForce

    Posted: 16 May 2021 07:24 PM PDT

    If the cost per transistor for 7nm today is more than 28nm, would a GTX 980 cost more to build today than in 2014 even at 1/3rd the die size required now?

    Posted: 16 May 2021 01:06 AM PDT

    In 2014 TSMC could shove around 29 million transistors into a mm2. Today it's between 90 and 100 million. So it's less than 1/3 the die area.

    It should in theory be possible to build the same GPU on a 120mm die (30%), correct? I would imagine power draw would be down significantly as well, or clocks much higher.

    If that is true, we would be looking at rx 580/rx5500/gtx1060 performance. Or potentially upcoming Navi 24 performance, which with only 20CUs (Xbox Series S equivalent) should come in between 120mm2 and 160mm2. Half of almost everything in Navi22 (CUs, ROPs, etc.). All of which makes it feel like architectural changes have almost nothing to do with performance increases, and it's almost all features. RT, VRS, etc.

    How would a 140mm2 GPU die be profitable at all today if they'd be forced to sell the GPU it goes into at the $150-$200 range if it costs more to make than a 398mm2 GPU that sold for $550 at launch in 2014?

    ...A 20cu RDNA2 GPU would in fact need more transistors.

    Navi 21 = 26.8 million transistors.

    Navi 22 = 17.2 million transistors. (Way more than more than half of N21)

    Navi 24 = 7 to 9 million most likely. Probably not less than half of N22. Xbox Series S GPU has 8 million.

    GTX 980 = Only 5.7 million, which is less than the Xbox GPU.

    submitted by /u/bubblesort33
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    A theoretical musing on Buffing intel 8086 CPU

    Posted: 16 May 2021 01:45 PM PDT

    Lets say you had a magic wand. A wand that could safely overclock any cpu to any clockspeed. And let's suppose the only CPU you have in your possession is an 8086. You desperately need something that performs as well as an Intel 11600k but you can't buy a new processor, you only can upgrade the 8086 witht the wand you now have. Remember, this wand can only raise clockspeed ; branch prediction and cache remain unchanged. Here is the million dollar question : By how much do you raise the clock speed of the 8086 so that it can perform with the same power as an Intel 11600k ?

    submitted by /u/BeenThereAndReadd-it
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