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    Saturday, July 18, 2020

    Hardware support: A new material helps transistors become vanishingly small

    Hardware support: A new material helps transistors become vanishingly small


    A new material helps transistors become vanishingly small

    Posted: 17 Jul 2020 09:04 PM PDT

    [Hardware Unboxed] Bribes & Bullying to Prevent Bad Coverage? The Ugly Side of Reviews

    Posted: 17 Jul 2020 04:59 AM PDT

    (Anandtech) TSMC Confirms Halt to Huawei Shipments In September

    Posted: 17 Jul 2020 08:26 AM PDT

    [Anandtech] At Last, a 2.5Gbps Consumer Network Switch: QNAP Releases QSW-1105-5T 5-Port Switch

    Posted: 17 Jul 2020 12:17 PM PDT

    https://www.anandtech.com/show/15916/at-last-a-25gbps-consumer-network-switch-qnap-releases-qsw11055t-5port-switch

    Nice to see more consumer-focused switches finally coming around. Still wondering when consumer routers might finally start incorporating at least 2.5Gb/s ports though...

    submitted by /u/Kougar
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    [Gamers Nexus] Best CPU Coolers Deathmatch: 360 Arctic Liquid Freezer II vs. EK AIO 360 (ft. AMD Ryzen)

    Posted: 18 Jul 2020 01:11 AM PDT

    Seagate ST2000LM007 / ST1000LM035 Rosewood 2.5" -- Is this the worst HDD ever made?

    Posted: 17 Jul 2020 05:37 PM PDT

    Best Airflow Cases right now ($60-$200) - Gamers Nexus

    Posted: 17 Jul 2020 04:39 AM PDT

    SMIC: Advanced Process Technologies and Gov’t Funding (Part 1)

    Posted: 18 Jul 2020 12:38 AM PDT

    Lenovo x13 (AMD 4750u) vs. X1 Carbon 7th Gen

    Posted: 17 Jul 2020 07:33 AM PDT

    I know there has been some threads here about Intel vs. AMD laptops with the recent review of the T14s that was posted yesterday and I wanted to share a few thoughts since I have both an Intel and AMD Thinkpads at the moment(one is getting returned in a few days).

    Disclaimer: I realize an 8th gen vs. 10th gen Intel would have been a fairer comparison but I do not have a 10th gen thinkpad. All benchmarks give the comet lake 10th gen U series processors about a 10% performance improvement. The price difference for 8th gen vs. 10th gen X1 carbon laptops was about $400 at the time I bought the 8th gen system. A 31% price premium for a 10% performance increase was not worth it to me personally.

    Specs:

    Thinkpad X1 Carbon

    • i7-8565u
    • 16GB RAM
    • 512GB SSD
    • 14" 400 nit 1080p screen (matte touch)

    Thinkpad X13

    • AMD Ryzen 7 4750u (8c/16t)
    • 16GB RAM
    • 128GB SSD (soon to be upgraded)
    • 13.3" 300 nit 1080p screen (matte touch)

    Lenovo Store page

    Geekbench links (on better battery default settings)

    Ryzen

    Intel

    Both have the most current version of windows 10 home, office, discord, Firefox etc. and both machines came out of the box less than a month ago. The x1 carbon I got at Costco on clearance for $1299, the X13 I got a Lenovo sale for just under $900 before I added an extended warranty. I have had the x13 only 2 days vs nearly a month for the X1 carbon.

    Comparison

    • The x1 carbon screen is much better in color and contrast even at the same relative brightness
    • The 400 nit screen on Lenovo's website is listed as a low power screen the 300 nit is not(the 400 nit screen was not an option at the time I ordered)
    • Battery life, the X1 carbon with its 51wh battery so far is demolishing the X13 with its 48wh battery. A large part of this is due to both Intel's overall efficiency and the low power screen. The x13 I in testing and usage is looking like I can get 6-7.5 hours. The X1 carbon easily over 10, both of these are based on light productivity use with web browsing and setting the default scheme to better battery.
    • Performance Plugged in - so far I have only run geekbench on both and done some informal testing. Plugged in and set to max performance the X13 is slightly ahead on single core CPU score. On multi-core it has as strong lead at 5500 vs. 4000. GPU performance Ryzen wins which is not surprise vs. a 8th gen iGPU its not even close. I have not played any games on either yet and I don't plan to do more than light gaming on either.
    • Performance on battery - Ryzen wins by an even larger margin on anything but max performance mode. If you set the system to better battery the Intel system is much more aggressive at throttling the processor. The Ryzen system looses about 20% of its CPU performance during benchmarking. The intel system on the same battery life settings cuts its score by over 50% on single core and 40% on multi-core at just under 2300. This is with both screens set to 50% brightness.
    • Thermals - running geekbench the intel X1 hits 99C on at least 1 core every time. The X13 hits a max of 84-87 while being in smaller chassis.
    • Build quality - The x1 as a the flagship device has a glass trackpad vs. a plastic trackpad on the X13. Lenovo keyboards are fantastic on both devices the 14" intel chassis has slightly larger keys and the X1 is backlit while the X13 is not.

    Outside of benchmarks and physical differences the X13 feels much more responsive. Websites load slightly faster consistently even sitting side by side. There have been times in the last month using the X1 that I thought websites had quit responding or were having server issues. The aggressive CPU limiting is noticeable when I have it set to improve battery life or even in better performance mode. Overall despite the worse screen and lower battery life the X13 is more enjoyable to use. If you are moving up form something with a slower older processor or something that has a mechanical hard drive both will feel great. I only noticed the slowdown on the Intel system when I had it unplugged.

    I am hoping there will be some firmware updates that will extend the X13's battery life over time but I won't hold my breath on it. Honestly if Lenovo puts the t14s on sale and I could get it with the 400 nit screen it would probably be the perfect laptop for me at the moment. Unfortunately it rings up at over 2x the price I paid for the x13.

    TLDR: X13 has worse battery life and screen but performance is better both in benchmarks and general usage when on battery.

    submitted by /u/mrfixitx
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    Overclocking-Surprise due to disabled internal Graphics? i9-10900KF in quick Review (der8auer)

    Posted: 17 Jul 2020 04:28 PM PDT

    L1 cache line and critical word position

    Posted: 18 Jul 2020 01:57 AM PDT

    Hey guys, I have a question about how is managed a cache line. I understood the critical word is the piece of data requested which trigger prefetching a whole cache line. Does the critical word always at the beginning of the cache line prefetched? Let's say the cache line size is 64 bytes and the critical word is at the address 32, will the cache line start with the memory address 0 or 32?

    submitted by /u/teivah
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    Which H2 2020 hardware release are you most excited for?

    Posted: 17 Jul 2020 03:56 AM PDT

    Hope the question isn't too casual for the sub.
    Looks like an exciting next few months :
    - RTX 3000 series.
    - Big Navi.
    - Zen 3.
    - Intel Tiger Lake with Xe.
    - Rocket Lake (?).
    - ARM Macbook.
    - PS5/Xbox X.
    Did I miss anything?

    submitted by /u/fluidmechanicsdoubts
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    Will TB3 ports be compatible with USB4?

    Posted: 17 Jul 2020 10:11 PM PDT

    I've looked all over the internet for this one and haven't had any luck so far.

    We know that USB4 ports will have an (optional) ability to drive TB3 devices. But on the other hand do we know whether the difference between USB4 and TB3 is enough for USB4 devices to be compatible with existing TB3 ports?

    submitted by /u/Draknurd
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    How much would it cost to build the PC equivalent of next gen consoles or at least very close to?

    Posted: 17 Jul 2020 09:46 PM PDT

    I don't think it's simply a matter of just the CPU and GPU since they emphasize on significantly upgrading other components of the console to minimize bottlenecks so what parts would you also need?

    submitted by /u/MarshyBarsh
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