PNY RTX A400 4GB GDDR6 workstation Black

A four-port display adapter pretending to be a workstation GPU. Buy it for the monitors, not the compute.

The PassMark G3D score of 5983 puts this thing well below average for raster work, and the compute numbers are rough. 2.7 FP32 TFLOPS sounds okay until you realize that's less than a third of what a budget gaming card from two generations ago manages. The 96 GB/s memory bandwidth is the real bottleneck here. That's not a typo. 96 GB/s on a 64-bit bus means anything memory-hungry is going to crawl. The one bright spot is efficiency: 50W TDP with no external power connector means it'll run in basically any office PC without a PSU upgrade.

Against the RTX 5070 cards in our database, this thing isn't even in the same conversation. The ASUS PRIME RTX 5070 and MSI SHADOW 5070 absolutely demolish it in every performance metric, though they cost more and draw way more power. The XFX RX 7900 GRE and Gigabyte 7800 XT are also in a completely different league. But here's the thing: those are gaming cards. The A400's real competition is other low-profile workstation cards like the T400 or T1000, and even against those, the 4GB VRAM limit is a serious handicap.

Pricing is all over the place. In the US you'll see USD 212 to USD 269 depending on the vendor, with Memory Express typically at the lower end. In Europe it's EUR 253 to EUR 286. For a card this limited, even the low end feels steep. You're paying for the form factor and the four display outputs, not the GPU. If you need exactly this shape and exactly four DP ports, fine. Otherwise, there are better ways to spend this money.

The PNY RTX A400 is a weird little card. It's a single-slot, 50W workstation GPU that's more about driving four monitors than actually doing workstation-class work. The headline here is connectivity: four Mini DisplayPort 1.4a outputs on a card that'll fit in almost anything. But with 4GB of VRAM on a 64-bit bus and just 768 CUDA cores, this is a display adapter with a GPU attached, not a compute powerhouse.

If you're looking for any kind of real GPU performance, this isn't it. Go grab a used RTX 3060 or even a T1000 if you need the workstation badge. And if you're on an older Threadripper or Xeon board with legacy BIOS, this card literally won't boot. Save yourself the headache.

The PNY RTX A400 is a niche product for a niche use case. If you need four 5K displays driven by a single-slot, low-profile card that sips power, this is one of very few options. For anything else, including actual workstation workloads, look elsewhere. The 4GB VRAM ceiling and 64-bit memory bus kneecap this card before it even gets started.