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Thread: Anandtech News

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    #9871

    Anandtech: Corsair Reveals Vengeance LPX DDR4-4866 Memory Kit

    Corsair on Thursday released its fastest memory kit to date, the Vengeance LPX DDR4-4866, aimed at the most performance-hungry enthusiasts. The modules are specifically tested for compatibility AMD’s Ryzen 3000/X570 platforms, though they can work with Intel-based PCs too.
    Corsair’s Vengeance LPX DDR4-4866 memory kit consists of two 8 GB memory modules (CMK16GX4M2Z4866C18) featuring a CL18 26-26-46 latency and a 1.5V voltage. The unbuffered DIMMs rely on Micron’s cherry-picked DRAM devices as well as Corsair’s custom 10-layer PCB. The modules are traditionally equipped with aluminum heat spreaders, and are compatible Corsair’s Vengeance Airflow fan to improve cooling.
    The manufacturer claims that it has tested its Vengeance LPX DDR4-4866 modules with AMD’s Ryzen 3000-series processors paired with ASUS's ROG Crosshair VIII Formula, the MSI MEG X570 Godlike, and the MSI Prestige X570 Creating motherboards. Meanwhile, since the UDIMMs feature an XMP 2.0 SPD, they will be able to work with Intel Z390-based platforms at DDR4-4800 as well.
    For those who need high-end performance and RGB LEDs as well, Corsair will also offer Vengeance RGB Pro DDR4-4700 16 GB kit. The RGB Pro kit cannot be equipped with a fan, but it will still feature the same DRAM chips, a custom PCB, an XMP 2.0 profile, and aluminum heat spreaders.
    Being a true flagship offering, Corsair’s 16 GB Vengeance LPX DDR4-4866 memory kit is expensive to say the least: in the US the kit costs $984, whereas in Europe it is priced at €1,064,99.
    There is one thing to note about Corsair’s Vengeance LPX DDR4-4866 and Vengeance RGB Pro DDR4-4700 memory kits. AMD as well as third-party observers sayd that the Ryzen 3000 processors show the highest memory subsystem performance when frequencies of Infinity Fabric (fClk), memory controller (uClk), and DRAM (mClk) are equal (i.e., the fClk to mClk ratio is set at 1:1). Which can be an issue, as few Ryzen CPUs can support such high fClk clocks; so using exceptionally fast DDR4 memory modules (e.g., DDR4-4000+) may be unfavorable in many cases. That said, it remains to be seen what kind of advantages will Corsair’s DDR4-4700 and DDR4-4866 kits bring.
    Related Reading:


    Source: Corsair



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    #9872

    Anandtech: The Corsair K63 Wireless Mechanical Keyboard Review: PC Gaming Untethered

    Today we are taking a look at a wireless mechanical keyboard from Corsair, the K63. Designed with living room gaming in mind, the K63 seeks to combine the benefits for mechanical keyboards with the convenience of wireless communication, with a battery life lengthy enough for long gaming sessions.

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    Anandtech: Wi-Fi 6 Is Officially Here: Certification Program Begins

    Wi-Fi Alliance on Monday officially started its Wi-Fi 6 certification program, informally kicking off the widescale adoption of the new Wi-Fi standard. As with the group's previous certification programs, the Wi-Fi 6 certification program is focused on verifying the interoperability and feature sets of IEEE 802.11ax devices, ensuring that they work well with each other and that the devices feature all of the required performance and security capabilities of the new standard.
    Wi-Fi Alliance's certification comes as device manufacturers have already been shipping Wi-Fi 6 products for the last several months – essentially seeding the hardware ecosystem to get to this point. So the first task for the group's members and test labs will be to certify existing Wi-Fi 6 devices. This includes existing access points, routers, and client devices, including Samsung’s Galaxy Note 10, which has become the first smartphone to receive certification.
    Under the hood, the new standard takes a bit of a departure from past Wi-Fi iterations by focusing more on improving performance in shared environments, as opposed to solely boosting peak device transfer rates. To that end, while the maximum throughput supported by Wi-Fi 6 is 2.4 Gbps, the crucial improvement of the Wi-Fi 6/802.11ax technology the standard's enhanced spectral efficiency. Among other things, the technology adds OFDMA (Orthogonal Frequency-Division Multiple Access) to allow different devices to be served by one channel, by dedicating different sub-carriers for individual client devices. Wi-Fi 6 also adds mandatory support for MU-MIMO – a feature first added in 802.11ac Wave 2 – as well as transmit beamforming for better reaching individual clients.
    In fact, even existing Wi-Fi 5 (802.11ac) client devices can benefit from a Wi-Fi 6 (802.11ax) AP, though Wi-Fi 6 Certified devices will deliver the best results.
    Meanwhile, Wi-Fi Alliance mandates that Wi-Fi 6 certified devices support WPA3 security, 1024-QAM, 160 MHz channels, and that devices support target wake time (a battery-saving tech that minimizes device check-ins).
    Finally, along with the launch of the certification program itself, the Wi-Fi Alliance has already certified its first dozen devices. The following network adapters, chipsets, and access points have all been Wi-Fi 6 certified:

    • Broadcom BCM4375
    • Broadcom BCM43698
    • Broadcom BCM43684
    • Cypress CYW 89650 Auto-Grade Wi-Fi 6 Certified
    • Intel Wi-Fi 6 (Gig+) AX200 (for PCs)
    • Intel Home Wi-Fi Chipset WAV600 Series (for routers and gateways)
    • Marvell 88W9064 (4x4) Wi-Fi 6 Dual-Band STA
    • Marvell 88W9064 (4x4) + 88W9068 (8x8) Wi-Fi 6 Concurrent Dual-Band AP
    • Qualcomm Networking Pro 1200 Platform
    • Qualcomm FastConnect 6800 Wi-Fi 6 Mobile Connectivity Subsystem
    • Ruckus R750 Wi-Fi 6 Access Point

    Wi-Fi Names and Performance
    Naming Peak Performance
    New Name IEEE
    Standard
    1x1
    Configuration
    2x2
    Configuration
    3x3
    Configuration
    Wi-Fi 4 802.11n 150 Mbps 300 Mbps 450 Mbps
    Wi-Fi 5 802.11ac 433 Mbps over 80MHz

    867 Mbs over 160MHz
    867 Mbps over 80MHz

    1.69 Gbps over 160MHz
    1.27 Gbps over 80 MHz

    2.54 Gbps over 160 MHz
    Wi-Fi 6 802.11ax 867 Mbs over 160MHz

    depends
    1.69 Gbps over 160MHz

    on network
    2.54 Gbps over 160 MHz

    configuration
    Related Reading:


    Source: Wi-Fi Alliance


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