800G 2xDR4/DR8 OSFP-IHS Finned-top SMF 1310nm 500m Dual MPO-12 Ethernet/InfiniBand Transceiver, MSA Compliant
The VO-8CDR8CM-AA is an 800G OSFP DR8 transceiver in a twin-port IHS finned-top form factor for medium-reach AI data center and HPC interconnects. It uses 8x 100 Gb/s PAM4 parallel lanes over single-mode fiber to deliver 800 Gb/s aggregate throughput up to 500m via dual MPO-12 APC connectors. The twin-port design enables a native 2x 400G-DR4 breakout, doubling effective switch port density for high-radix spine-leaf and leaf-to-server topologies.
Reference platforms: NVIDIA Spectrum-4 (SN5600), Spectrum-X800 (SN6000), Quantum-2 (QM9700/QM9790), Quantum-X800 (Q3400/Q3200) with ConnectX-7 NICs. Compliant with IEEE 802.3ck, OSFP MSA, and CMIS 5.0.
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- Features
- Specifications
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- FAQs
- Datasheet
- 800 Gb/s aggregate data rate (8x 100 Gb/s PAM4)
- Twin-port OSFP form factor with IHS finned-top heat sink
- Up to 500m reach over SMF with RS(544,514) FEC
- Dual MPO-12 APC optical interface (two independent 4-lane engines)
- Native 2x 400G-DR4 breakout for spine-leaf doubling
- EML transmitter and PIN photodiode receiver array
- Validated on NVIDIA Spectrum-4, Spectrum-X800, Quantum-2, Quantum-X800
- Compliant with IEEE 802.3ck, OSFP MSA, CMIS 5.0
- Two-wire serial interface with full DDM telemetry
- Commercial temperature 0 to 70 degC; max power 17 W
- RoHS 2 and REACH compliant
- 4-7 week lead time vs 24+ week industry standard
- US-based engineering support from New Jersey HQ
- Pre-shipment compatibility testing on customer-specified platforms
- 5-year warranty with free pre-sales technical consultation
| Category | Optical Transceiver |
|---|---|
| Form Factor | OSFP Twin-port (IHS Finned-top) |
| Data Rate | 800 Gb/s (8x 100 Gb/s PAM4) |
| Wavelength | 1310 nm |
| Fiber Type | Single-Mode Fiber (SMF) |
| Distance | 500m |
| Connector | Dual MPO-12 APC |
| Protocol | Ethernet, InfiniBand |
| Breakout | 2x 400G-DR4 |
| Optics | EML TX / PIN PD RX |
| FEC | RS(544,514) host-side |
| Management | CMIS 5.0, DDM |
| Power Supply | 3.3 V single supply |
| Max Power | 17 W |
| Temperature | Commercial (0 to 70 degC) |
| Compliance | OSFP MSA, IEEE 802.3ck, CMIS 5.0, RoHS 2 |
| Warranty | 5 years |
Q: Is the Vitex 800G OSFP DR8 compatible with NVIDIA switches?
A: Yes. Validated on NVIDIA Spectrum-4 (SN5600), Spectrum-X800 (SN6000), Quantum-2 (QM9700/QM9790), and Quantum-X800 (Q3400/Q3200) with ConnectX-7 NICs. Not compatible with the older Quantum (QM8700/QM8790) family or with SN5400/SN4700/SN4410.
Q: When should I choose DR8 over VR8 or 2xFR4?
A: DR8 is the right pick for 100-500m runs on single-mode fiber, typically row-to-row within a hall. VR8 covers in-row 50m multi-mode runs at lower cost. 2xFR4 extends to 2km for inter-hall links using duplex LC fiber. Most AI data centers use DR8 for the bulk of spine-leaf fabric.
Q: Can I break out into 2x 400G-DR4?
A: Yes, natively. The twin-port design exposes two independent 4-lane DR4 ports. Use an MPO-12 to 2x MPO-12 breakout fiber to connect to two 400G ConnectX-7 NICs in DR4 mode.
Q: What fiber and connectors do I need?
A: Single-mode fiber (G.652.D) with MPO-12 APC connectors. The transceiver ports are male (pinned), so patch cables must be female (unpinned). See the Vitex M12FOM4 OS2 SMF assemblies (single-mode variants available on request).
Q: What is the optical power budget?
A: 800G-DR8 per-lane budget is approximately 6.3 dB on standard SMF. A typical 500m run consumes ~0.2 dB of fiber attenuation plus ~0.7 dB across two MPO-12 APC connectors. Well within budget for clean, properly mated assemblies.
Q: Why buy from Vitex instead of OEM or other third-party brands?
A: Vitex ships in 4-7 weeks vs the 24+ week industry norm for 800G optics, provides US-based engineering support from New Jersey, pre-tests on your specific switch firmware and NIC combination, and backs every module with a 5-year warranty.
Q: What is the typical use case?
A: AI training cluster spine-to-leaf links across rows, GPU pod aggregation, leaf-to-server connections where single-mode fiber is preferred for future-proofing, and any 800G connection between 50m and 500m where DR4 breakout to 400G NICs is the target topology.
Technical Documentation
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