400G QSFP112 Passive Cable 0.5m for DGX Spark Stacking

SKU: CE11264 Brand: Core Electronics

Turns two DGX Spark systems into a two-node cluster over a short, low-power copper link between their ConnectX-7 ports.

$234.42 AUD, inc GST
$213.11 AUD, exc GST

Available with a lead time
Expect dispatch between Nov 10 and Nov 17

Shipping:

  • $7+ Standard (5+ days*, tracked)
  • $11+ Express (2+ days*, tracked)
  • FREE Pickup (Newcastle only - must order online*)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

A 0.5 m passive direct attach copper (DAC) cable with a QSFP112 connector on each end, for linking two NVIDIA DGX Spark systems directly to each other.

Each DGX Spark has two ConnectX-7 QSFP ports on the back, and clustering two units starts with a physical cable between them. This cable runs from one port on each Spark to the other with no switch in between. You then configure the network using NVIDIA's Connect Two Sparks playbook.

The cable is rated for 400G, but the speed between two Sparks is set by their ports: up to 200 Gb/s per link. Because it is passive copper, latency stays at the nanosecond level.

The 0.5 m length suits Sparks placed side by side or stacked. The cable cannot be used in OSFP ports, which use a different form factor. To unplug it, pull the tab to release the latch.

Features

  • Supports distributed AI training and RoCE networking between two machines through a direct NIC-to-NIC connection between QSFP112 adapters

  • Draws under 0.25 W because it is a passive assembly with no active components in the signal path

  • Plugs in and unplugs with both systems running, because it is hot-pluggable to the QSFP112 MSA

  • Identifies itself to the host port through an onboard I²C EEPROM on the SFF-8636 management interface

  • Carries 100 Gb/s per lane over solid silver-plated copper conductors, a foam-skin PE dielectric and gold-plated contact pads

Specifications

400G QSFP112 Passive DAC Cable 0.5 m

Property

Value

Cable type

Passive direct attach copper (DAC), twinax

Connectors

QSFP112 to QSFP112

Length

0.5 m

Wire gauge

30 AWG

Rated data rate

400G (4 × 100G PAM4; 4 transmit and 4 receive channels)

Link rate on DGX Spark

Up to 200 Gb/s per port

Power consumption

Under 0.25 W

Supply voltage

3.3 V

Differential impedance

100 Ω (90–110 Ω)

Management interface

SFF-8636, I²C EEPROM

Standards

QSFP112 MSA Rev 2.1, IEEE 802.3ck

Conductors

Solid copper, silver-plated

Jacket

PVC, UL listed CM 75 °C

Latch

Pull-to-release

Operating case temperature

0 to 70 °C

Storage temperature

−40 to 85 °C

Operating humidity

5–85 % non-condensing

Compliance

FCC Class B, EN55022 Class B, RoHS (EU) 2015/863, REACH

Warranty

3 years

Resources

This product is listed in:

NVIDIA
NVIDIA>Workstations

Product Comments

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Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

  • $3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
  • $7+ for Standard Post (typically 6+ business days, tracked)
  • $11+ for Express Post (typically 2+ business days, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

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Our physical address (here's a PDF which includes other key business details):

40 Aruma Place
Cardiff
NSW, 2285
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

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