Nvidia B100 vs Nvidia RTX 4090

The B100 is newer, with 8x the memory and 7.9x the bandwidth.

At a glance

Memory

8x more on B100

B100: 192 GB

RTX 4090: 24 GB

Memory bandwidth

7.9x higher on B100

B100: 8.00 TB/s

RTX 4090: 1.01 TB/s

Cheapest on-demand

B100: --

RTX 4090: $0.33 /GPU/hr

Price comparison

Median price per GPU per hour by billing type, with the cheapest listing under it.

Billing	B100	RTX 4090
On-demand	No on-demand listings	$0.48 /GPU/hr from $0.33
Reserved	No reserved listings	$0.52 /GPU/hr from $0.29 (1 mo)
Spot	No spot listings	$0.33 /GPU/hr from $0.16

Heads up: A provider's own page may quote a different figure, for example on tax, region or a promotion. A monthly-only plan shows a derived hourly rate. Medians are across providers, one vote each, so a large catalog does not outweigh a small one. Verify before provisioning. More on how we price.

Price history

B100 vs RTX 4090 price history

Weekly median on-demand price per GPU per hour

Last 12 months

Aggregating historical prices...

Specs comparison

Spec	B100	RTX 4090	Difference
Memory
Capacity	192 GB HBM3e	24 GB GDDR6X	8x more on B100
Bandwidth	8,000 GB/s	1,010 GB/s	7.9x higher on B100
Bus width		384-bit
Compute · dense
FP4	7,000 TFLOPS	Not supported	B100 only
FP8	3,500 TFLOPS	330.3 TFLOPS	11x higher on B100
FP16 / BF16	1,750 TFLOPS	165.2 TFLOPS	11x higher on B100
INT8	3,500 TOPS	660.6 TOPS	5.3x higher on B100
FP32	60 TFLOPS	82.6 TFLOPS	38% higher on RTX 4090
FP64	30 TFLOPS	Not supported	B100 only
Platform
Interconnect	NVLink 1,800 GB/s	PCIe only	NVLink on B100 only
Released	Q4 2024	Q4 2022	2 years newer on B100
Precision
Supported formats	FP4FP6FP8FP16BF16TF32FP32FP64INT8	FP8FP16BF16TF32FP32INT4INT8

Compute: Vendor peak figures, dense and per GPU. Not measured throughput.

Source: B100 datasheet and RTX 4090 datasheet.

Where to rent them

Providers that rent these GPUs, with each one's cheapest rate. No provider we track offers both right now.

Provider	B100	RTX 4090
Vast.ai USA	--	$0.34 /GPU/hr On-demand
GPU.ai UAE	--	$0.34 /GPU/hr On-demand
Runpod USA	--	$0.34 /GPU/hr On-demand
Packet·ai USA	--	$0.39 /GPU/hr On-demand
GPUhub Singapore	--	$0.44 /GPU/hr On-demand
Lium Distributed	--	$0.58 /GPU/hr On-demand
Oblivus USA	--	$0.64 /GPU/hr On-demand PCIe
Sesterce France	--	$0.66 /GPU/hr On-demand