Nvidia A40 vs Nvidia RTX PRO 4000 SFF

The A40 has 2x the memory and 61% more bandwidth. The RTX PRO 4000 SFF is newer and cheaper right now.

At a glance

Memory

2x more on A40

A40: 48 GB

RTX PRO 4000 SFF: 24 GB

Memory bandwidth

61% higher on A40

A40: 696 GB/s

RTX PRO 4000 SFF: 432 GB/s

Cheapest on-demand

42% cheaper on RTX PRO 4000 SFF

A40: $0.65 /GPU/hr

RTX PRO 4000 SFF: $0.38 /GPU/hr

Price comparison

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

Billing	A40	RTX PRO 4000 SFF	Difference
On-demand	$1.03 /GPU/hr from $0.65	-- /GPU/hr from $0.38
Reserved	-- /GPU/hr from $0.61 (24 mo)	No reserved listings

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 reserved on the A40 and on-demand on the RTX PRO 4000 SFF: 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

A40 vs RTX PRO 4000 SFF price history

Weekly median on-demand price per GPU per hour

Last 12 months

Aggregating historical prices...

Specs comparison

Spec	A40	RTX PRO 4000 SFF	Difference
Memory
Capacity	48 GB GDDR6	24 GB GDDR7	2x more on A40
Bandwidth	696 GB/s	432 GB/s	61% higher on A40
Bus width	384-bit	192-bit	2x wider on A40
Compute · dense
FP4	Not supported	385 TFLOPS	RTX PRO 4000 SFF only
FP8	Not supported	192.5 TFLOPS	RTX PRO 4000 SFF only
FP16 / BF16	149.7 TFLOPS	96.3 TFLOPS	55% higher on A40
INT8	299.3 TOPS	192.5 TOPS	55% higher on A40
FP32	37.4 TFLOPS	24 TFLOPS	56% higher on A40
Platform
Interconnect	PCIe only	PCIe only
Board power	300 W	70 W	4.3x higher on A40
Released	Q4 2020	Q3 2025	5 years newer on RTX PRO 4000 SFF
Precision
Supported formats	FP16BF16TF32FP32INT4INT8	FP4FP8FP16BF16TF32FP32INT8

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

Source: A40 datasheet and RTX PRO 4000 SFF 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	A40	RTX PRO 4000 SFF
GPU.ai UAE	$0.69 /GPU/hr On-demand	--
Sesterce France	$2.05 /GPU/hr On-demand	--
Runcrate USA	$2.66 /GPU/hr On-demand PCIe	--
Denvr Canada	$0.65 /GPU/hr On-demand	--
E2E Networks India	$1.02 /GPU/hr On-demand	--
Exoscale Switzerland	$1.05 /GPU/hr On-demand	--
Database Mart USA	$0.61 /GPU/hr Reserved	--
Runpod USA	On request Reserved	--
Hetzner Germany	--	$0.38 /GPU/hr On-demand