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As you'd expect, the packaging and features on the PowerColor RX 6400 ITX are about as budget as budget can get. You get a brown cardboard box with a few specs and other details, and inside, the card itself is wrapped in an anti-static bag. There's no padding or protection for the card, though ours arrived without incident and works fine.
As you'd expect, the RX 6400 is a featherweight compared to typical cards like the PowerColor RX 6650 XT. It tips the scale at just 351g, making it one of the lightest cards we've had in-house in recent years — and half-height models would be even lighter. That also means the heatsink isn't likely a very high-quality model, and we saw slightly higher thermals as a result, though nothing we'd really worry about.
Dimensions for the card are 165x125x40mm, basically as long as your PCIe x16 slot, as tall as the expansion slot, and nothing more, though it is a dual-slot cooler. We bought the dual-slot card just because we wanted the theoretically best possible experience with the RX 6400. A half-height card with a tiny 40-50mm fan should probably perform just as well, given the low TBP, but we wanted to be sure.
This is a barebones card with no lighting of any form, perfectly fit to go inside cases that don't have windows or try to show off the PC hardware. The fan is a 90mm model with 11 blades, a 4-pin connector, and three mounting screws.
As noted earlier, there's no factory overclock or any ability for end-users to overclock the RX 6400, at least for now. So the PowerColor card in that sense is a fully reference configuration, with a 53W TBP (typical board power) and a 2321 MHz boost clock.
The 4GB GDDR6 comes clocked at 16Gbps, and the 64-bit interface means the GPU only has 128 GB/s of bandwidth, though AMD lists the 16MB Infinity Cache bandwidth at 208 GB/s. That cache bandwidth will help a lot more at lower settings that are less likely to exceed the cache capacity, as we saw with the RX 6500 XT.
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