D-Link DXE-820T Dual Port 10Gbase NIC Adapter Review

Introduction


Among our recent upgrade to 10 Gbit networking here in the eTeknix review section wasn’t just the awesome 12-port smart switch that we saw a little while ago, D-Link also supplied me with a DXE-820T dual-port 10 Gbit Ethernet Network card to be able to connect with the switch in full speed. After all, what good does a 10 Gbps switch do when my test rig doesn’t have the same kind of performance.

The D-Link DXE-820T is a dual-port 10 GBASE-T RJ-45 PCI Express high-performance adapter designed for the high-speed PCI Express bus architecture. This adapter offers the increased bandwidth needed in modern environments as well as being a reliable and functional PCI network card. It has been specifically designed to allow throughput at rates up to 40 Gbps, thus eliminating the bottleneck that exists with current 32 and 64-bit PCI bus architectures.

The DXE-820T requires a PCI-E v2 x8 or x16 slot for enough bandwidth, but you don’t need to provide any extra power connectors or other things besides your network cables, naturally. The card is capable of a transmitting distance of up to 100m with Cat 6A or higher in 10 GBASE-T mode and up to 100m with Cat 5 type cables in Gigabit mode. This makes the placement of the switch a lot easier.

The DXE-820T features TCP, UDP, and IP checksum offloading functionality, which transfers the checksum processing tasks from the computer’s own CPU and onto the network card itself. The DXE-820T’s ability to handle the checksum processing means that the CPU’s processing power can be used for other tasks while still achieving 20 Gbps network speeds. It also means that the network card needs some extra cooling in the form of an active fan as well as a passive heatsink.

The adapter also features an onboard screening of 802.1Q VLAN tagged Ethernet frames, allowing you to assign multiple subnets to each server and isolate devices within each VLAN from the rest of the network for better traffic control and security. With support for advanced features such as 802.3x flow control, jumbo frames, and SNMP for network management, the DXE-820T can easily interoperate with your current networking equipment.

With two ports at your disposal, you can increase the network throughput even further than the 10 Gbit per second on each port. With Smart Load BalancingTM, the DXE-820T can configure multiple adapters to work as a team, sharing traffic and ensuring data reliability. This both creates a faster network and provides fault tolerance resulting in a stable and efficient network.

The low profile design allows the deployment in space restricted areas and D-Link also included a low-profile slot cover right away. The card itself is powered by Broadcom’s BCM57810 chip.

The card naturally supports Jumbo Frames for optimized setups and it allows for values up to 9K. The DXE-820T is compatible with all major operating systems with drivers available for both user systems and server systems such as Windows Server 2012 or Solaris 11.

Feature Highlights

  • High-Speed data transmission at rates up to 40Gbps allow for seamless data transfer.
  • 10GBASE-T technology supports distances to 100m over CAT6A or better copper cable.
  • Advanced Features: 802.3x flow control for traffic management, 802.1Q VLAN tagging for increased security, and checksum offloading to reduce CPU processing burden.
  • Bandwidth Management: NIC partitioning enables administrators to manage bandwidth for greater network efficiency.

Specifications

Packaging and Accessories

The DXE-820T NIC card comes in a very neutral box that only really reveals that we have a D-Link product inside. But it’s a network card and it isn’t like you would put the box in the display after installing the card anyway, so simply is good.

We do find a little sticker on the rear of the box that reveals what is inside, the model number along with serial, mac address, and hardware version.

There is both a driver disk and a quick installation manual inside the box, and D-Link also included a low-profile bracket for use in small-form-factor systems. Everything you need to get going with that extra speed.

Urgent Certificate Patch Issued by Microsoft to Address ‘Out-of-Band’ Foreign Certificates

It is said that Microsoft normally releases their patches and updates on the second Tuesday of every month, also known by most as being Patch Tuesday. This time however, they have apparently been forced to release another update having discovered that foreign encryption certificates for big websites, such as Google, had been coming from the National Informatics Center of India’s certificate server.

The problem here is that attackers have allegedly gained access to the certificate generation system and have issued at least 45 certificates, allowing them to pose as companies ranging from email providers to search engines and even banks, as well as credit card processors. Having NIC generating the certificates, the possibility of becoming a victim is extremely high due to browsers showing the given web sites as being trustworthy, having Microsoft flagging the issue as top priority and issuing the urgent ‘out-of-band’ patch.

“The subordinate CA has been misused to issue SSL certificates for multiple sites, including Google web properties. These SSL certificates could be used to spoof content, perform phishing attacks, or perform man-in-the-middle attacks against web properties,” Microsoft warned in its emergency bulletin. “The subordinate CAs may also have been used to issue certificates for other, currently unknown sites, which could be subject to similar attacks.”

Microsoft has stated that the update in question is being rolled out automatically to all Windows 8 and Windows 8.1 users, as well as users of older Windows operating systems who have installed a recommended Windows Update patch, adding the certificate revocation support to the operating system.

Thank you Bit-Tech for providing us with this information

Thermaltake Reveals Their New Non-Interference Cooler (NiC) Series

Thermaltake are one of the leading brands when it comes to components, and they have some of the industries best coolers, power supplies and chassis products available on the market today, we know this because we’ve had the pleasure of testing many of them, so we’re always happy to hear that the bit T has something new on the way.

Their brand new NiC Series CPU Coolers, the L31 and the L32 incorporate the latest proprietary technology at Thermaltake disposal and their “non-interference cooler” design means that they’re fully compatible with RAM of all kinds, which is great news for those who want ram with ridiculously oversized heat spreaders to help chill their high-end overclocked RAM.

“NiC L31/ NiC L32 solves the problem that high performance RAM and CPU coolers cannot co-exist in the past, it achieves the best RAM clearance allowing user to install high end overclock RAM with coolers with ease.” said Thermaltake in their recent press release.

Three solid Φ 8mm Direct Contact Heat-pipes conduct the heat effectively, and will support up to 160W on the L31 and upto 180W on the L31. Opening on the fins are designed not only for its distinctive looks but also for performance. The opening of the top fin extends to the opening of the bottom fin creating an even dissipation surface. While the slim-looking fan frame is designed to avoid interference with other components on the motherboard achieving a low total height of only 140mm (L32:160mm). Spin speed from 500 – 1800rpm automatically, although an additional fan can be added if you wish.

Everything is tailored towards cool and quiet performance, while maintaining that tight form factor to prevent conflicts with other components. If you’ve got a build that really need that extra space then the NiC could be the perfect cooler for the job. We look forward to checking out what they can really do as soon as we can get hold of samples, stay tuned!

For more information – NiC L31 – NiC L32

Thank you Thermaltake for providing us with this information.

Image courtesy of Thermaltake.

Wireless Issues In Windows 8.1 PCs Still Persist

It seems not even Windows 8.1 can escape the problem sphere everyone seems to be having lately. According to Softpedia, several users have reported limited or no Wi-Fi connectivity, a bug that previously affected Surface tablet, but now became a widespread issue also targeting PCs and other tablets.

Forums have started filling up with users reporting problems, but it appears that fixes for the problems at hand are yet to be released. Some examples of issues encountered by users can be seen below.

“Two brand new HP notebooks, and two apple computers. Upgraded the bios, rebooted, updated the NIC drivers, (as HP phone helpdesk said to do) upgraded the cisco E4200 router firmware. No matter if pc’s are set to sleep, reboot or powered off, issue happens.

It happens less on the HP notebook, but the wireless setting are the same on the other HP. Issue wasn’t as bad on Windows 8 but after 8.1 it is constantly not connecting without many tried of disconnect, reconnect, reenter the password. The router has been reset a couple times and the cable modem has been reset.”

“I ran into the same issue described in the thread. I use Windows 8.1, Intel Centrino Advanced-N 6235 (ASUS UX31A) and DLink (DIR-655) wireless router. I think it’s a combination of both Intel and Microsoft issue. None of the configuration tricks work for me (rollback driver, disable 802.11n/Bluetooth/power save, etc.).”

“I feel bad for buying new laptop and especially using windows 8. I have new dell laptop, Wi-Fi was dropping intermittent. I upgraded to windows 8.1 thinking it might fix the issue. Think what, now I can’t connect at all. I am decided to get out of Windows 8.”

Microsoft has apparently acknowledged the problem, but instead suggested only vague workarounds that do not seem to fix the issues on Windows 8.1 tablets or PCs.

Thank you Softpedia for providing us with this information