Can I deploy NVIDIA B300 or NVIDIA GB300 on Runcrate today?

NVIDIA B300 is on demand in 1 region from $16.77/hr, billed by the second on most GPUs. NVIDIA GB300 is not in stock on Runcrate right now; reserve a cluster, and once we've verified your company and your need we take your exact spec to GPU owners that fit.

How much VRAM does each GPU have?

NVIDIA B300 has 288GB HBM3e. NVIDIA GB300 has 288GB HBM3e.

B300 or GB300: which holds a 70B model in 8-bit weights?

It needs 70 GB of 8-bit weights. On the B300: 1 GPU, 218 GB spare. On the GB300: 1 GPU, 218 GB spare. Fits on one GPU of either.

GPU comparison

B300 vs GB300.

Close on specs: 288 GB and 2,250 TFLOPS FP16 against 288 GB and 2,500 TFLOPS. Pick by live price and availability.

Launch B300 Reserve a cluster

Rent either on Runcrate

B300from $16.77/hr
$0.058 per GB/hr$0.75 per 100 TFLOPS/hr
Launch B300
GB300Not in stock right now
Reserve a cluster

Live hourly price, then per GB of memory and per 100 FP16 TFLOPS.

Which is better for

Which to pick for each job. Memory fit and throughput, from the datasheets.

JobB300GB300Pick

Hold a 70B model in 8-bit weights
70 GB of 8-bit weights
B300: 1 GPU, 218 GB spare
GB300: 1 GPU, 218 GB spare
Either. Fits on one GPU of either.
Serve an 8B model in 16-bit weights
16 GB of 16-bit weights
B300: 1 GPU, 272 GB spare
GB300: 1 GPU, 272 GB spare
Either. Fits on one GPU of either.
Fine-tune a 70B model with QLoRA
About 46 GB with 4-bit weights
B300: 1 GPU, 242 GB spare
GB300: 1 GPU, 242 GB spare
Either. Fits on one GPU of either.
Train on a full node
FP16 tensor throughput per node
B300: 8x, 18,000 TFLOPS, NVLink
GB300: 8x, 20,000 TFLOPS, NVLink
Either. Close per node.
Throughput per watt
FP16 TFLOPS per 100 W of TDP
B300: Varies by card
GB300: Varies by card
Either. Varies by card.

Compare another pair

Blackwell

NVIDIA B300

from$16.77/hr

Available now · 1 region

Memory: 288 GB HBM3e
FP16 tensor: 2250 TFLOPS
Bandwidth: up to 8.0 TB/s

Launch B300 Reserve a cluster

Full pricing details

Blackwell

NVIDIA GB300

Not in stock right now

Memory: 288 GB HBM3e
FP16 tensor: 2500 TFLOPS
Bandwidth: up to 8.0 TB/s

Reserve a cluster Deploy B300 instead

Full pricing details

At a glance

Spec by spec. The longer bar is the better number.

Memory

NVIDIA B300288 GB

NVIDIA GB300288 GB

Memory bandwidth

NVIDIA B300up to 8.0 TB/s

NVIDIA GB300up to 8.0 TB/s

FP16 tensor

NVIDIA B3002250 TFLOPS

NVIDIA GB3002500 TFLOPS

FP32

NVIDIA B30075 TFLOPS

NVIDIA GB30083 TFLOPS

Full specs

The complete spec sheet.

Spec	NVIDIA B300	NVIDIA GB300
Architecture	Blackwell	Blackwell
Memory	288 GB	288 GB
Memory type	HBM3e	HBM3e
Memory bandwidth	up to 8.0 TB/s	up to 8.0 TB/s
FP32	75 TFLOPS	83 TFLOPS
FP16 tensor	2250 TFLOPS	2500 TFLOPS
INT8	187.5 TOPS	167 TOPS
TDP	up to 1400 W	up to 1400 W
Form factor	SXM	Superchip
NVLink	Yes	Yes
GPUs per node	8	8
Hourly price (live)	from $16.77/hr	Not in stock right now

Questions

B300 or GB300. What buyers ask first.

Other comparisons