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NVIDIA Quadro K5000 for MAC 4GB GDDR5 Graphics… vs PNY NVIDIA RTX A4000 — Head-to-Head (2026)

Our verdict first, then the specs side by side.

Our verdict

NVIDIA Quadro K5000 for MAC 4GB GDDR5 Graphics… is our pick.

The PNY NVIDIA RTX A4000 is the clear winner for any 2026 workload: it carries 16 GB of GDDR6 versus the Quadro K5000's 4 GB GDDR5, 6,144 Ampere CUDA cores versus 1,536 Kepler cores, and adds 192 Tensor cores plus 48 RT cores the K5000 simply doesn't have — the K5000 only makes sense as a legacy display card for a classic Mac Pro.

Buy the PNY RTX A4000 if you need a modern single-slot workstation GPU for ray tracing, GPU rendering, or AI inference on a current PCIe workstation. Buy the NVIDIA Quadro K5000 for Mac only if you are keeping a 2010-era Apple Mac Pro (cheese-grater) alive and need a factory-flashed, Mac-EFI-compatible card with multi-display output.

SpecPicks editorial verdict, written June 19, 2026. Prices move, so check the current price on each listing before you buy.

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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Spec-by-spec

SpecNVIDIA Quadro K5000 for MAC 4GB GDDR5…PNY NVIDIA RTX A4000
BrandPNYPNY
Model NameNVIDIA Quadro K5000NVIDIA RTX A4000
Item Weight2.9 Pounds2 Pounds
Model NumberNVIDIA Quadro K5000NVIDIA RTX A4000
Built-In Media6 pin power cable, DVI-VGA adapter, DisplayPort-DVI adapter, Graphics cardNVIDIA RTX A4000 professional graphics board, DisplayPort to DVI-D SL adapter, auxiliary power cable, Quick Start Guide
Number of Fans11
Video ProcessorNVIDIANVIDIA
Graphics Card Ram4 GB16 GB
Graphics Ram Size4 GB16 GB
Graphics Ram TypeGDDR5GDDR6
Compatible DevicesDesktopPCIe x16 equipped PCs and Workstations
Memory Clock Speed2700 MHz7000 MHz
Graphics CoprocessorNVIDIA QuadroGA104-875
Graphics DescriptionNVIDIA Quadro K5000 for MAC with 4GB GDDR5 memory, 1536 CUDA cores, 256-bit memory interface, and multi-display capabilities, designed for professional applications and complex scenes in post-production workflows.NVIDIA RTX A4000 Professional Graphics Board

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