Hi - I can’t find anything re whether the Spark’s ConnectX-7 ports support QSFP56, QSFP112 or both. Has NVidia published this info anywhere? If not, anyone try out either/both? Thanks
There are two approved cable SKUs
- Amphenol: NJAAKK-N911 (QSFP to QSFP112, 32AWG, 400mm, LSZH) https://www.amphenol-cs.com/product/njaakk0006.html (0.5m version)
- Luxshare:- LMTQF022-SD-R (QSFP112 400G DAC Cable, 400mm, 30AWG)
Official certified stacking cable. Links to buy them:
https://www.microcenter.com/product/703095/pny-certified-stacking-dgx-spark-cable-40
https://www.microcenter.com/product/702191/pny-dgx-spark-stacking-cable
In Europe (per example Germany), FS.com has a reasonably priced 200G QSFP56 0,5m that they recommend for the Spark:
And you can also easily find the one from ASUS (90MA0000-P01000), which is a 400G QSFP112 DAC, at retailers.
https://www.notebooksbilliger.de/asus+qsfp+kabel+04m+verbindung+zwischen+2x+asus+sparks+914664
Both are in the 80-100€ range.