So something wild has happened at work. The short version is I think I’ve proven the value and power of a pair of 2x DGX’s clustered. Now I’m getting asked for advice for switches, with the assumption we will be doing a cluster anywhere from 4-16 DGX Sparks! My leadership asked me about a few switc…

The GB10 is great to show the capabilities, but for datacentre stuff you need to be looking at the datacentre products (e.g. GB300, NVL72). GB10 is very much aimed at the home lab, small dev team lab. In the datacentre you would expect redundant PSUs, proper 19" rack mountable equipment etc… Yes - …

I just personally picked up a MikroTik CRS804 for my 8 system cluster I will be patching together this weekend.

@Anglerfish , first off, Sparks are making a tradeoff in terms of lower memory bandwidth in favor of lower power requirements, so they’re good for single user or small group usage scenarios, but obviously wouldn’t work for 100 people. Something more like 10 to 20 people is still questionable because …

I have a cluster of 8 Sparks with a MikroTik CRS804, and am working on upgrading that to 16 Sparks. Keep in mind that the switches are not as plug-and-play as normal home switches for regular ethernet. They need to be configured and the specifics depends on the specific switch. A 200 gig switch migh…

@Anglerfish don’t be tempted by the low price of a MikroTik switch. Skip the SN4600 (the cages are QSFP28 only) and go with the SN4700.

Thanks gents, I probably should have have clarified a bit. This all in flux. We are likely going to do a 3x or 4x set of 4 DGXs clustered. This will support only a vert small team >5. Not one giant 16x cluster. Thanks on the SN4700 recommendation. What about the other models. Microtik is out of t…

Here are my choices: Switch | Used price | I'd buy at ----------------- | --------------: | ---------: NVIDIA SN4700 | $5–10K | <$7K Arista 7060DX5-32 | $8–15K | <$10K Dell Z9332F-ON | $3–8K | <$5K NVIDIA SN3700 | $3–7K …

nvidia and dell are not switch companies. arista is.

Honestly if you’re only going to be doing clusters of 4 Sparks it would be insane overkill to buy any 32 or 64 port enterprise switch specifically for the Sparks. There’s a lot of cargo cult thinking in this space regarding switches and GPUs that demands options for huge scale be used for everything…

Feels like in a dream! Need advice about clustering multiple Sparks - Network Switch advice

Accelerated Computing DGX Spark / GB10 User Forum DGX Spark / GB10

ai.sling.42 August 21, 2026, 2:58pm 5

This thread is currently the best state-of-the-art info on a cluster of 16 Sparks that I’m aware of: Full Kimi K3 running on 16x GB10 cluster

Topic		Replies	Views
Has anyone done DGX Spark / GB10 clusters larger than 8x? 16x? DGX Spark / GB10 networking , clustering	27	3580	June 20, 2026
DGX Spark 4-8 Cluster Switch Options post MikroTik CRS-804 \ MikroTik CRS-812 Market wipe out DGX Spark / GB10 switches	29	839	October 4, 2026
Connecting multiple DGX Spark Units Ethernet Switch Recommendations Ethernet Switches	3	6504	October 18, 2025
Slow speeds on DGX spark cluster DGX Spark / GB10 networking , dgx-spark-issue	16	1596	September 30, 2026
4-node DGX Spark cluster without a switch DGX Spark / GB10 networking , clustering	59	6197	August 15, 2026
Advise on Spark cluster DGX Spark / GB10	10	1396	March 5, 2026
How many DGX Spark/GB10 devices do you have? DGX Spark / GB10	50	3600	August 3, 2026
Best place to get a switch for 4x Spark DGX Spark / GB10	18	1372	August 2, 2026
MikroTik Switches & Recommendations DGX Spark / GB10	29	3128	July 2, 2026
6x Spark setup DGX Spark / GB10	112	13589	April 25, 2026

Feels like in a dream! Need advice about clustering multiple Sparks - Network Switch advice

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