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NVIDIA RTX A4000 vs NVIDIA RTX PRO 4000 Blackwell SFF: Comparison

NVIDIA RTX A4000 and NVIDIA RTX PRO 4000 Blackwell SFF separate most on tdp: NVIDIA RTX A4000 at 140 W, NVIDIA RTX PRO 4000 Blackwell SFF at 70 W, 100% in favour of NVIDIA RTX PRO 4000 Blackwell SFF. Card Length splits them by another 43%, again favouring NVIDIA RTX PRO 4000 Blackwell SFF. They match on 4 other specifications, including gpu brand, tier and ray tracing support.

NVIDIA RTX A4000
NVIDIANVIDIA RTX A4000
NVIDIA RTX PRO 4000 Blackwell SFF
NVIDIANVIDIA RTX PRO 4000 Blackwell SFF

Specs

Specification
NVIDIA RTX A4000
NVIDIA RTX A4000
NVIDIA RTX PRO 4000 Blackwell SFF
NVIDIA RTX PRO 4000 Blackwell SFF
GPU BrandNVIDIANVIDIA
SeriesRTX Ampere GenerationRTX PRO Blackwell
Board PartnerPNY / NVIDIA ReferenceNVIDIA Reference (workstation, no AIB partners)
VRAM16 GB-33%24 GB
TierMainstreamMainstream
Memory TypeGDDR6GDDR7
Boost Clock1560 MHz-27%2130 MHz
Ray Tracing Supporttruetrue
TDP140 W-100%70 W
ArchitectureAmpereBlackwell
Card Length242 mm-43%169 mm
Slot Width11
Memory Bus Width256 bit192 bit-25%
Power Connector1x 6-pinNone (slot powered)
CUDA Cores61448960
PCIe InterfacePCIe 4.0 x16PCIe 5.0 x8
Display Outputs4x Mini-DisplayPort 1.44x Mini DisplayPort 2.1b

Verdict

NVIDIA RTX A4000

7.2 / 10 Expert Rating

Still one of the best VRAM-per-slot workstation cards for CAD and inference work; not the pick for gaming, but excellent at what it's built for.

NVIDIA RTX PRO 4000 Blackwell SFF

7.7 / 10 Expert Rating

A genuinely useful niche card - the only realistic way to get 24GB of workstation VRAM into a truly small chassis.

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