General

What is Active PFC?

Active Power Factor Correction improves the power factor value of the PSU by altering the input current wave shape. PSUs with Active PFC can achieve a power factor of 0.99, while PSUs with Passive PFC can only achieve 0.70, and PSUs with no PFC achieve less than 0.60. A higher power factor reduces transmission losses and improves efficiency for power companies, making Active PFC an important feature for the environment.

How can a PFC power supply save energy?

By reducing the volt-amperes your electric utility has to deliver in order to provide a gene power level demanded by the power supply. Much less power is lost in generating useless “harmonics” that unnecessarily load down the AC electrical delivery system.

Are PSUs with multiple +12V outputs more reliable than PSUs with a single +12V output?

Yes, multiple +12V outputs are used to ensure safety protection; each output keeps the current within a safe range. PSUs with a single +12V output generally tend to be older designs and present greater risk because, in the event of a short in any component, there is no over current protection.

What is Active PFC?

Active Power Factor Correction improves the power factor value of the PSU by altering the input current wave shape. PSUs with Active PFC can achieve a power factor of 0.99, while PSUs with Passive PFC can only achieve 0.70, and PSUs with no PFC achieve less than 0.60. A higher power factor reduces transmission losses and improves efficiency for power companies, making Active PFC an important feature for the environment.

Are multiple 12-volt rails better than a single 12-volt rail?

With all the hype about multiple 12-volt rails (ads claim that two rails is better than one, five is better than four, etc.), you’d think it was a better design. Unfortunately, it’s not!

Here are the facts: A large, single 12-volt rail (without a 240VA limit) can transfer 100% of the 12-volt output from the PSU to the computer, while a multi-rail 12-volt design has distribution losses of up to 30% of the power supply’s rating. Those losses occur because power literally gets “trapped” on under-utilized rails. For example, if the 12-volt rail that powers the CPU is rated for 17 amps and the CPU only uses 7A, the remaining 10A is unusable, since it is isolated from the rest of the system.

Since the maximum current from any one 12-volt rail of a multiple-rail PSU is limited to 20 amps (240VA / 12 volts = 20 amps), PCs with high-performance components that draw over 20 amps from the same rail are subject to over-current shutdowns. With power requirements for multiple processors and graphics cards continuing to grow, the multiple-rail design, with its 240VA limit per rail, is basically obsolete.

PC Power and Cooling is once again leading the industry. All of our power supplies now feature a large, single 12-volt rail. The design is favored by major processor and graphics companies, complies with EPS12V specs (the 240VA limit is not a requirement) and is approved by all major safety agencies such as UL and TUV.3

How do I pick a good PSU?

It is not easy for a general user to judge if a PSU is good or not. Here are some principles.
• Choose a well-known brand.
• Has the PSU passed safety certifications?
• Is the wattage number the value for peak output or continuous output? Continuous is better.
• Compare the weight with other similar products to see if it is too light.
• (Not suitable for passive PFC power supply)
• Compare the internal components, if they have size difference.
• Does the PSU have the 80 PLUS certification.

NA255A

Can the NA255A support up to 4 GPU cards?

The NA255A hardware can support up to 4 pcs GPU cards but the BIOS on some manufacturer’s motherboards were not designed

This means that hardware will not be issue but the motherboard firmware is more likely to be the cause of a problem if it arises.

From our records, only some ASUS motherboards will not work up to 4 GPU cards. Check with your motherboard’s manufacturer for further details regarding compatibility.

How loud and how fast are the cooling fans on the NA255A?

The max speed is at 34dB but default is running at speed of 65% and 22dB. The fan speed can be adjust by manual.

How to adjust shows on web http://www.netstor.com.tw/product_info.aspx?SerID=6&Title=TurboBox&ArID=21&PID=PID_170324287237937

What if my MSI™ Z270 gaming motherboard doesn't recognize the NA255A?

The solution is as follows:

  1. Visit the MSI BIOS Download Page to download and update your MSI Z270 Gaming MoBo to the latest BIOS version 7A58v12 released on April 11, 2017.
  1. First, make sure to not have any card installed in slot 2, slot 3, and slot 4 on the MSI motherboard before proceeding.
  1. Install NA255A host card on MSI’s motherboard’s PCIe slot 1 for signal of electrically x16
  1. Connect the monitor to MSI motherboard’s onboard HDMI interface for screen output (see attached image file) so the monitor will utilize Intel Core i3-7100’s integrated HD Graphics 630 processor. In MSI’s MoBo BIOS settings, set i3-7100 integrated HD Graphics 630 as the top priority screen output processor.
  1. Power on your PC, and then the NA255A will be powered on along automatically. When the  Pc boots into Windows 10, the GTX 1080 gpu cards in NA255A will be recognized by WIN10’s Device Manager correctly.

I am interested in possibly using factory overclocked cards that are a little larger for maximum cooling. What is the max card height the NA255A can accomodate?

The NA255A can accommodate the max card height is 5.7”/145mm.

We have just received the NA250A-GPU and I have a question about the cards installation layout in my Mac Pro as well as the NA250A-GPU. The following are the details of my system and PCIe cards. Please advise what would be the best configuration of cards installation in both devices in order to achieve the best performance.

System:

  • Mac Pro early 2009
  • El Capitan OSX 10.11.5

PCIe cards:

  • GT 120 for UI
  • GTX 780 for Cuda processing
  • Titan X for Cuda processing
  • Red Rocket card
  • Black magic decklink card
  • USB 3 card

Please see the following for the suggested cards arrangement in both Mac Pro and NA250A-GPU.

Since you are using GTX 780 and TITAN X for CUDA processing, we would suggest you to visit http://www.nvidia.com/object/mac-driver-archive.html and download/ install the latest Mac CUDA driver for the two GPU cards that working with Mac OS X 10.11.5.

Mac Pro (Early 2009), OS X 10.11.5
SlotPCIe card model
4th PCIe slot (x4 signal)USB 3.0 card
3rd PCIe slot (x4 signal)Blackmagic DeckLink card
2nd PCIe slot (x16 signal)NA250A host card
1st PCIe slot (x16 signal)Nvidia GT 120 graphics card (for GUI)

 

NA250A-GPU
SlotPCIe card model
SLOT2Nvidia GTX 780 GPU card
SLOT3Nvidia TITAN X GPU card
SLOT4Red Rocket card

Please help to verify if the NA255A-XGPU is able to support 4 x GTX 980 or 4 x GTX1080 simultaneously with the computer specs provided. Besides, if it is possible to get an upgrade to 1500W power supply instead of 1200W, or can we purchase without a power supply?

We specialize in Forensic Computers for the Military and law enforcement and is currently looking to purchase the NA255A-XGPU. The followings are the PC specs and requirements:

Host PC:

  • Motherboard: ASUS X99-E WS/USB 3.1 Socket 2011-v
  • CPU: i7-5820K 3.3GHz
  • RAM: 32GB DRR4 2133MHz
  • PCIe Slots: 7 x PCIe 3.0/2.0 x16 (single x16 or dual x16/x16 or triple x16/x16/x16 or quad x16/x16/x16/x16 or seven x16/x8/x8/x8/x8/x8/x8)
  • Windows 10 Pro 64-Bit

or

  • Motherboard: ASUS Z10PE-D8 WS Socket 2011-v3
  • CPU: 2x Intel Xeon E5-2630v4
  • RAM: 64-128GB DRR4
  • PCIe Slots: 7x PCIe 3.0
  • Windows 10 Pro 64-Bit

GPUs to be installed in the NA255A-XGPU are 4 x GTX 980 or 4 x GTX1080.

For your reference, we had provided a real case with a similar scenario as yours:

A customer installed four Nvidia GTX 980 GPU cards in his NA255A. The host computer he uses is Asus X99-E WS motherboard installed with Intel Core i7-5960X CPU; he installed eight 8GB DDR4 RAM modules on the motherboard, so totally there’re 64GB RAM on his Asus X99-E WS. The customer reports the four GTX 980 cards in NA255A work properly with Asus X99-E WS.

We have confirmed the above setup from the customer is workable. However, you mentioned the CPU you used for the Asus X99-E WS/USB 3.1 motherboard is i7-5820K. But from our success case, the CPU used on Asus X99-E WS is a higher end model of i7-5960X.

Please note that the max number of PCIe lanes for i7-5820K is only 28 lanes, but the max number of PCIe lanes for i7-5960X is 40 lanes.

(1) i7-5820K:

http://ark.intel.com/products/82932/Intel-Core-i7-5820K-Processor-15M-Cache-up-to-3_60-GHz

(2) i7-5960X:

http://ark.intel.com/products/82930/Intel-Core-i7-5960X-Processor-Extreme-Edition-20M-Cache-up-to-3_50-GHz

Furthermore, your RAM for Asus X99-E WS/USB 3.1 motherboard is 32GB DDR4, but, from our success case the RAM is 64GB DDR4. The size of RAM on the motherboard may also have an influence on the number of GPU cards workable with motherboard.

Therefore, four GTX 980 GPU cards in NA255A should also work with your Asus X99-E WS/USB 3.1 motherboard. But most importantly, the CPU model and size of RAM must be considered since the i7-5820K CPU only has 28 lanes and motherboard only has 32GB in size.

As we mentioned, the ASUS X99-E WS can support up to 4 GPUs; however, the Z10PE-D8 WS can only recognize up to 2 GPUs. We suggest to choose the GTX-1080 because this GPU requires less power and offers better performance.

Currently we don’t have the 1500W power supply option available. And due to its elaborate design, we don’t recommend using any different power supply other than the one included in the case.

I'm looking to use NA255A-GPU for heavy multi-GPU computational purposes. Is the Host Adapter PCIe card that plugs into the host PC a simple "data pass through" layer?

Does it add any additional latency when transferring large amounts of data between GPUs and host system memory? Is the upstream port slot inside of the NA255A box a special slot? Or is it a standard PCI-E slot? If I were to connect the Host Adapter card to a custom backplane not manufactured by you guys, say a backplane with a custom FPGA, does that custom backplane and FPGA still get recognized by the Host PC’s bios? I only ask because:

1. The entire system is very attractive for what we do here at Zebra. We do a lot of GPU intensive computations and your product’s ability to give us 4 GPUs in a single box is very attractive.

2. We have custom FPGAs and backplanes with both our static and dynamic holographic display products. We currently connect to these using much lower bandwidth protocols (ex: ethernet and USB). I’m curious if it would be possible to use your Host Adapter card to connect directly to our custom FGPA cards or backplanes so they are directly accessible to the host PC.

 

Answer: 

The NA255A is a standard multiple PCIe slots expansion enclosure. It only require a free PCIe x16 slot from the host PC and doesn’t need any software installation for the enclosure itself. Of course, if the third-party’s PCIe cards that to be installed into NA255A require driver installation then the driver installation procedure is just the same as you plug the PCIe card into your host PC. So, the NA255A is a “data pass through” PCIe slot expansion. Just imaging the NA255A let your single PCIe slot of host PC to be multiple PCIe slots.

The upstream slot is pre-installed with a target PCIe adapter in order to connect with the host adapter board of the host PC. If the FPGA is also a standard PCIe interface that can be installed into a standard PCIe slot of the host PC then it can also be installed into any expansion slots of NA255A as well but not in the slot of upstream port.

For the 1200 W model, would those cards work? The first claims 280 W, the second 250 W. While 4*280 < 1200, I am concerned about transients if the load varies a lot.

Yes, it can run 280W power supply *4.

NA211A

I'm interested in purchasing the NA211A-GPU PCIe expansion chassis for my 2009 Mac Pro computer. I need it specifically for the DaVinci Resolve software, which relies heavily on GPU Cuda core processing. I plan to use the chassis for a second processing card, as well as a Red Rocket card. Is there any reason why the expansion chassis would not work with Resolve?

The DaVinci Resolve definitely works with the NA211A-GPU PCIe expansion chassis. However, you would not be able to install both the GPU card and a Red Rocket into the NA211A-GPU at the same time as the NA211A-GPU has only one open type PCIe x8 slot available for the PCIe x16 card. We would suggest that you install the GPU card and a PCIe x4 card (moved from your Mac Pro) in the NA211A-GPU, and keep the Red Rocket card in your Mac Pro for best performance.

Please take note that either one of the following combinations of PCIe cards would work in the NA211A-GPU.

a)

1 x GPU card

1 x low speed PCIe x4 card

b)

1 x Red Rocket

1 x low speed PCIe x4 card

We would recommend the NA250A-GPU (/product/pcie-expansion-enclosure-na250a/) should you need to install two or more PCIe x16 cards at the same time.

How to convert the NA211A to Thunderbolt PCIe expansion enclosure, NA211TB?

The following video link demo how to convert the NA211A to Thunderbolt PCIe expansion enclosure, NA211TB.
http://www.netstor.com.tw/_05/video/NA211A%20into%20NA211TB.html

The description states that PCIe 3.0 x4 slots will be available when upstream port working under PCIe 3.0 x8 mode. Does this mean that if I am running at PCI-e 3.0 16x mode I will not have access to the PCIe x4 connectors?

If the upstream is running under PCIe 3.0 x16 mode then the two PCIe x4 connectors will not be available. The maximum bandwidth that host interface can support is up to 128 Gbps external PCIe 3.0 x16 between host and NA265A.

Does NA221A-NB (Laptop Package) work with Lenovo T530 Laptops running Windows 7 64-bit?

NA221A-NB works with laptops that come with ExpressCard 34/ 54 slot. For older laptops that support only PCIe 1.0 ×1 spec, the bandwidth is up to 2.5 Gbps (2.5 Gbps from 1.0 × one lane = 2.5 Gbps) when NA221A-NB is connected with the laptop. However, for newer laptops with Intel Sandy Bridge micro-architecture (w/ PCIe 2.0 ×1 spec), the bandwidth will be 5 Gbps (5 Gbps from 2.0 × one lane = 5 Gbps) when you connect NA221A-NB to the laptop.

Will the NA211A-DT connect with a 2.0 x4 PCIe slot via a x4 Riser cable? The riser cable is shielded and about 10" in length

It depends on the signal quality of Riser card. If the signal is in a good quality then the host adapter from NA211A-DT still can convert the connection between host computer to NA211A.

Will the NA211A-DT connect with a 2.0 x4 PCIe slot via a x4 Riser cable? The riser cable is shielded and about 10" in length

It depends on the signal quality of Riser card. If the signal is in a good quality then the host adapter from NA211A-DT still can convert the connection between host computer to NA211A.

NA210A

What is the bandwidth provided when TurboBox NA210A is connected with a laptop or a desktop PC?

The TurboBox NA210A is PCIe 2.0 spec, providing throughput 5 Gbps per lane.
For desktop PC users, since both host card and target card are PCIe 2.0 ×4 spec, when TurboBox NA210A is connected with desktop PC, the bandwidth provided is 20 Gbps (5 Gbps × 4 lanes = 20 Gbps).
For laptop users, since current technology of laptop supports only PCIe 1.0 ×1 spec, when TurboBox NA210A is connected with laptop, the bandwidth is 2.5 Gbps (2.5 Gbps from PCIe 1.0 × one lane = 2.5 Gbps). However, after the release of laptop with PCIe 2.0 ×1 spec (Intel Sandy Bridge microarchitecture) in the first quarter of 2011, when TurboBox NA210A is connected with laptop, the bandwidth will be 5 Gbps (5 Gbps from PCIe 2.0 × one lane = 5 Gbps).

How do I know the third party PCIe cards plugged on TurboBox NA210A are recognized by computer?

For users of Windows operating system, please check “Device Manager” from Computer Management. As for users of Mac OS X, please check “About This Mac” under the Apple icon to see if the third party PCIe cards are recognized by computer.
For detailed information about the verification of third party PCIe cards, please check the user manual and see the ninth section “Verify Installation” at the third page of the user manual.

After I connect the TurboBox NA210A to laptop/desktop PC, the TurboBox can not be recognized by computer. What can I do to solve this problem?

If the TurboBox NA210A is not recognized by computer, it can be BIOS’ problem. Please update your laptop/desktop PC to the latest BIOS from the Web site of your laptop/desktop PC manufacturer. After updating the laptop/desktop PC to the latest BIOS, the TurboBox can be recognized by computer.

Wondering if your Model# NA210A can support a KONA 3 and/or Red Rocket card(s)? I want to use this with a MacBook Pro.

Only MacBook Pro(Unibody Model ID 5,1) has problem on its ExpressCard interface compatibility; others models of MacBook Pro are working well with NA210A.
The spec. of Red Rocket card(s) is no problem working with NA210A but the spec. of KONA seems to ask for PCIe x4 bandwidth. Since Laptop is only provide PCIe x1 bandwidth so when KONA 3 works with a Laptop then I suppose it cannot reach full performance. SD will work but I cannot make sure on HD.

My system is: Macpro (8-core) 2x2.8 Quad intel Xeon. I am using Protools Accel cards a total of three PCie cards are already installed and a video card a total of 4 slots. I need to use the video card inside the expansion box so i can use the slot for the host card. I will be using a UAD card inside the expansion box and one video card. Would this be possible?

Yes, NA210A is no problem working both Video and Audio cards and the bandwidth from DT will be fairly enough for handle those two cards together. UAD’s engineer has tested NA210A with their 2pcs of UAD-2 Duo and the result is workin well. UAS will announce this news after they finish their big project of new products.

I'm running a mac pro 2.66ghz quad core intel nehalem processor with 16gb of 1066mhz ddr3 ram. The mac OS is 10.6.6. I want to run the NA210A-L (DT) loaded with two UAD 2 quad cards and a Sonnet tango express card, or quite possibly, three of the UAD2 quad cards.

Yes, it is workable. UAD’s engineer has tested NA210A-L(DT) with 3* UAD2 Duo cards and the result will be announced on UAD’s website soon.

NA220A

What is the bandwidth provided when NA220A is connected with a laptop or a desktop PC?

The NA220A comes with PCIe 2.0, providing throughput of 5 Gbps per lane. For desktop PC users, since both host card and target card are PCIe 2.0 x4 spec, when NA220A is connected with desktop PC, the bandwidth provided is 20 Gbps (5 Gbps x 4 lanes = 20 Gbps).
The older version of laptops only support PCIe 1.0 x1 spec, when NA220A is connected with laptop, the bandwidth is 2.5 Gbps (2.5 Gbps from PCIe 1.0 x one lane = 2.5 Gbps). However, after the release of laptop with PCIe 2.0 x1 spec (Intel Sandy Bridge micro architecture) in the first quarter of 2011, when NA220A is connected with laptop, the bandwidth will be 5 Gbps (5 Gbps from PCIe 2.0 x one lane = 5 Gbps).

Does the NA220A support the: UAD-2 QUAD DSP Accelerator?

Yes, NA220A works with UAD-2 QUAD. Moreover, UAD-2 QUAD only consumes 10W , and the NA220A is providing 80W output power which is sufficient.

NA381TB

We would like to check the compatibility between the NA381TB and the ARC-1264IL-16 RAID Controller card. We already have the RAID card on hand and we understand that it’s a 16 channel card while the enclosure has 24 drive bays.

ARC-1264IL-16 RAID card is compatible with NA381TB (24-bay Thunderbolt 2 JBOD) and work with Thunderbolt-enabled Mac. Please take note that ARC-1264IL-16 RAID card can only support 16 bays in the Netstor 4U 24-bay NA381TB enclosure.

Please go to http://www.areca.com.tw/support/s_macos/macos.htm and download/ install the latest MRAID program on your Thunderbolt-enabled Mac in order for the ARC-1264IL-16 RAID card to work with NA381TB and Mac OS X.

 

What is the read/write benchmark information for either of these two units? What is the normal life span of using 2.5" drives in a RAID environment?.

We don’t have these information yet. But performance and life span will be different when using different host RAID card.