Both have 24 GB of memory and about the same bandwidth. The RTX 3090 Ti is typically cheaper.

At a glance

Memory

Identical

RTX 3090 Ti
24 GB
RTX 4090
24 GB

Memory bandwidth

Within 5%

RTX 3090 Ti
1.01 TB/s
RTX 4090
1.01 TB/s

Cheapest on-demand

42% cheaper on RTX 3090 Ti

RTX 3090 Ti
$0.19 /GPU/hr
RTX 4090
$0.33 /GPU/hr

Price comparison

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

Billing RTX 3090 Ti RTX 4090 Difference
On-demand $0.27 /GPU/hr from $0.19 $0.45 /GPU/hr from $0.33 40% cheaper on RTX 3090 Ti
Reserved No reserved listings $0.52 /GPU/hr from $0.29 (1 mo)
Spot -- /GPU/hr from $0.10 $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. No median for spot on the RTX 3090 Ti: 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

RTX 3090 Ti vs RTX 4090 price history

Weekly median on-demand price per GPU per hour

Last 12 months
Aggregating historical prices...

Specs comparison

Spec RTX 3090 Ti RTX 4090 Difference
Memory
Capacity 24 GB GDDR6X 24 GB GDDR6X Identical
Bandwidth 1,008 GB/s 1,010 GB/s Within 5%
Bus width 384-bit 384-bit Identical
Compute · dense
FP8 Not supported 330.3 TFLOPS RTX 4090 only
FP16 / BF16 80 TFLOPS 165.2 TFLOPS 2.1x higher on RTX 4090
INT8 320 TOPS 660.6 TOPS 2.1x higher on RTX 4090
FP32 40 TFLOPS 82.6 TFLOPS 2.1x higher on RTX 4090
Platform
Interconnect PCIe only PCIe only
Board power 450 W 450 W Identical
Released Q1 2022 Q4 2022 6 months newer on RTX 4090
Precision
Supported formats FP16BF16TF32FP32INT4INT8 FP8FP16BF16TF32FP32INT4INT8

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

Source: RTX 3090 Ti datasheet and RTX 4090 datasheet.

Where to rent them

Providers that rent these GPUs, with each one's cheapest rate. Providers that rent both are listed first.

3 providers list the RTX 3090 Ti and 20 the RTX 4090. Every listing is on the RTX 3090 Ti page and the RTX 4090 page.

Similar GPUs

Other comparisons in the same class.

Our data for Nvidia RTX 3090 Ti was last updated on Sept. 14, 2026, and for Nvidia RTX 4090 on Sept. 14, 2026.