The MI300X 192GB has about 62% more memory bandwidth (5,300 vs 3,276 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 62% faster on the MI300X 192GB. The MI300X 192GB fits more of the catalog at Q4/8K — 50 vs 47 of 61 models (192 vs 128 GB VRAM). Largest model that fits the MI300X 192GB but not the Gaudi 3 128GB: Qwen3-235B-A22B (235.1B). MSRP is $12,500 for the Gaudi 3 128GB vs $15,000 for the MI300X 192GB. MSRP is a launch list price, not live retail — Amazon prices move; click through for the current price. Not retail-shoppable: Gaudi 3 128GB, MI300X 192GB (datacenter-class; cloud rental is the realistic way to use it). In the Q4/8K head-to-head below (59 shared models), the MI300X 192GB posts the higher tok/s in 56 rows vs 3. Methodology.
Spec comparison
Gaudi 3 128GB
MI300X 192GB
Vendor
Intel
AMD
VRAM
128 GB
192 GB
Memory type
HBM2e
HBM3
Memory bandwidth
3,276 GB/s
5,300 GB/s
TDP
600 W
750 W
MSRP (list)
$12,500
$15,000
Buy
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MSRP is the launch list price, not live retail. Buy links are Amazon
affiliate links — the price after you click is the live price.