800G OSFP Finned-top to OSFP Finned-top Direct Attach Copper Cable, 2m, MSA Compliant
The D8C-P1P002C-AA is a 2m 800G OSFP-to-OSFP passive Direct Attach Copper (DAC) cable for short-reach AI and cloud data center connections inside or between adjacent racks. Both ends use an IHS finned-top OSFP connector with 8x 106.25 Gb/s PAM4 electrical signaling and integrated CMIS EEPROM, delivering 800 Gb/s aggregate throughput with zero active optics and zero power consumption.
Passive DACs offer the lowest latency, lowest cost, and lowest power consumption of any 800G interconnect option, making them the default for in-rack server-to-switch links. Reference application: NVIDIA Spectrum-4 (SN5610) with BlueField-3 DPUs or ConnectX-7 NICs.
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- Features
- Specifications
- Applications
- FAQs
- Datasheet
- 800 Gb/s aggregate data rate (8x 106.25 Gb/s PAM4 electrical)
- OSFP IHS finned-top connectors on both ends
- 2m passive copper cable assembly
- Zero power consumption (fully passive)
- Lowest latency interconnect option at 800G (sub-10 ns)
- Built-in CMIS EEPROM with cable identification
- Validated on NVIDIA Spectrum-4 (SN5600, SN5610)
- Compliant with OSFP MSA, IEEE 802.3ck
- Twin-axial copper construction, individually shielded pairs
- Commercial temperature 0 to 70 degC
- RoHS 2 and REACH compliant
- US-based engineering support from New Jersey HQ
| Category | Direct Attach Cable (DAC) - Passive |
|---|---|
| Form Factor | OSFP IHS Finned-top (both ends) |
| Data Rate | 800 Gb/s (8x 106.25 Gb/s PAM4) |
| Cable Length | 2m |
| Configuration | Direct (1:1) |
| Protocol | Ethernet, InfiniBand |
| Power | Passive (zero) |
| Latency | < 10 ns end-to-end |
| Cable Type | Twin-axial copper, shielded pairs |
| Cable Jacket | LSZH |
| Management | CMIS EEPROM (cable ID) |
| Temperature | Commercial (0 to 70 degC) |
| Compliance | OSFP MSA, IEEE 802.3ck, RoHS 2 |
Q: When should I use a DAC vs AOC vs AEC vs transceiver pair?
A: Use a passive DAC for 1-3m in-rack runs (lowest cost, zero power, lowest latency). Use an AEC (Active Electrical Cable) for 3-7m runs where passive copper signal integrity falls off. Use an AOC for 5-30m. Use transceivers + structured fiber for 30m+ or when patch panel reconfiguration is needed.
Q: What is the maximum reach for an 800G passive DAC?
A: 800G passive copper is practically limited to about 2-3m due to signal attenuation at 106.25 Gbaud. Beyond that, switch to an Active Electrical Cable (AEC) for 3-7m, or AOC for longer runs. The Vitex 2m variant is the most common in-rack length.
Q: Is this validated on NVIDIA platforms?
A: Yes. Validated on NVIDIA Spectrum-4 (SN5600, SN5610) with BlueField-3 DPUs and ConnectX-7 NICs. Also compatible with NVIDIA Spectrum-X800 (SN6000), Quantum-2, and Quantum-X800. Both ends are IHS finned-top OSFP.
Q: What is the typical latency advantage vs an AOC?
A: Passive DACs have effectively zero processing latency (just signal propagation through copper, ~5 ns/m). An equivalent AOC adds ~50-100 ns from the active optics. For ultra-low-latency HPC and AI fabric, passive DAC is preferred when reach allows.
Q: Does the DAC need configuration on the switch?
A: No. The cable identifies itself via its CMIS EEPROM. The switch automatically recognizes it as a passive 800G DAC and sets up appropriate FEC and SerDes equalization. Plug-and-play on validated platforms.
Q: What gauge copper is used and how stiff is the cable?
A: Construction uses 30 AWG twin-axial pairs with individual shielding. The 2m variant is reasonably flexible for in-rack management, though noticeably stiffer than a 25G or 100G DAC due to the thicker shielding required at 106 Gbaud.
Q: How does Vitex DAC pricing compare to OEM?
A: Vitex passive DACs are competitively priced against OEM optics.
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