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GB300

by NVIDIA · Released Dec 2025 · Grace Blackwell Ultra

FrontierSuperchipN4P · TSMCFlagship
75
Gecko score
1.56 TFLOPs/W
Memory
576 GB
HBM3e
Bandwidth
16 TB/s
TDP
3200 W
Process
N4P
TSMC
FP16
5,000 T
FP8
10,000 T
Perf / Watt
1.56 T/W
Gecko Score
75
Announced
2024-10-15
Available
2025-12-01
List price
$95,000
Cloud $/h

FP precision matrix · manufacturer datasheet values

FP16 dense TFLOPs5,000
BF16 dense TFLOPs5,000
FP8 dense TFLOPs10,000
FP4 dense TFLOPs30,000
INT8 TOPs10,000
Memory bandwidth (TB/s)16
TDP (Watts)3,200
FP16 TFLOPs per Watt1.56

Disclosed in SEC filings, earnings calls, and press releases

CompanyDisclosed quantityYear
xAIMemphis Colossus 2 phase2025
Models trained or served
Known to ship on this chip
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Rack systems
Where this chip ships at scale
Datacenters
Deployed clusters tracked by BenchGecko

What came before · what comes next

HQ and fab locations · feeds /countries

Fab locations
Taiwan

Hand-curated · the same feed powering the AI Compute Demand Index

Live supply tightness for GB300 is tracked on the Chip Demand Ladder and rolls up into the AI Compute Demand Index. Updated weekly from hyperscaler order books, earnings calls, and secondary-market signals.

Every spec on this page is reproducible

Other chips from the same maker