When is NVLink worth it?
platform-fools.com
July 22, 2026
7 min read
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43/100
Summary
Nvidia no longer supports NVLink on consumer GPUs, with the last supported model being the RTX 3090. NVLink bridges currently range in price from $200 to $400, and tests are being conducted to evaluate the benefits of NVLink for AI workloads using dual RTX 3090s.
Key Takeaways
- Nvidia no longer supports NVLink on consumer GPUs, with the last supported model being the RTX 3090.
- NVLink boosts prompt processing speed by about 30% for tensor parallel inference but does not affect token generation speed.
- FSDP training shows nearly a 3x improvement with NVLink, while DDP training remains unaffected.
- Nvidia restricts peer-to-peer communication on consumer GPUs, which can be bypassed by patching the drivers.
