The B300 is newer, with 7.2x the memory and 5.1x the bandwidth. The A800 is cheaper right now.

At a glance

Memory

7.2x more on B300

A800
40 GB
B300
288 GB

Memory bandwidth

5.1x higher on B300

A800
1.55 TB/s
B300
8.00 TB/s

Cheapest on-demand

76% cheaper on A800

A800
$1.18 /GPU/hr
B300
$4.99 /GPU/hr

Price comparison

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

Billing A800 B300 Difference
On-demand -- /GPU/hr from $1.18 $8.50 /GPU/hr from $4.99
Reserved No reserved listings $6.25 /GPU/hr from $4.25
Spot No spot listings $5.26 /GPU/hr from $4.08

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. No median for on-demand on the A800: we only show one when at least 3 providers list the GPU on that billing type. Verify before provisioning. More on how we price.

Price history

A800 vs B300 price history

Weekly median on-demand price per GPU per hour

Last 12 months
Aggregating historical prices...

Specs comparison

Spec A800 B300 Difference
Memory
Capacity 40 GB HBM2 288 GB HBM3e 7.2x more on B300
Bandwidth 1,555 GB/s 8,000 GB/s 5.1x higher on B300
Bus width 5,120-bit 8,192-bit 60% wider on B300
Compute · dense
FP4 Not supported 14,000 TFLOPS B300 only
FP8 Not supported 4,500 TFLOPS B300 only
FP16 / BF16 312 TFLOPS 2,250 TFLOPS 7.2x higher on B300
INT8 623.5 TOPS 153.5 TOPS 4.1x higher on A800
FP32 19.5 TFLOPS 75 TFLOPS 3.8x higher on B300
FP64 9.7 TFLOPS 1.2 TFLOPS 8.1x higher on A800
Platform
Interconnect NVLink 400 GB/s NVLink 1,800 GB/s 4.5x higher on B300
Board power 240 W 1,100 W 4.6x higher on B300
Released Q4 2022 Q1 2025 2 years newer on B300
Precision
Supported formats FP16BF16TF32FP32FP64INT4INT8 FP4FP6FP8FP16BF16TF32FP32FP64INT8

Figures are for each model's headline configuration. Where a form factor carries a different number, it is named under the figure.

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

Source: A800 datasheet and B300 datasheet.

Where to rent them

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

1 provider list the A800 and 34 the B300. Every listing is on the A800 page and the B300 page.

Similar GPUs

Other comparisons in the same class.

Our data for Nvidia A800 was last updated on Sept. 14, 2026, and for Nvidia B300 on Sept. 14, 2026.