AMD Radeon Pro W6400 Review: Low Power RDNA 2 For Budget Workstations
AMD Radeon Pro W6400: Small Form Factor Navi 24 For Professionals
The Radeon Pro W6400 we’ll be showing you here today takes Navi 24 and scales things back even further, to a miniscule half-height add-in card that doesn’t need any supplemental power – it gets all of its juice directly from its PCIe slot. In addition to the small form factor though, there are some other special considerations to make with this card as well. But before we get ahead of ourselves, let’s check out the main features and specifications and take a tour of the card...
AMD Radeon Pro W6400 Features & Specifications
Whereas the full implementation of Navi 24
GDDR6 memory, operating at an effective data rate of 12Gbps (6GHz) over a narrow 64-bit interface, which offers up to 96GB/s of raw peak bandwidth, or up to 231GB/s if you factor in the effective increase afforded by the high-bandwidth, low-latency Infiniti Cache. The Radeon Pro W6400 features only a PCIe Gen 4 x4 interface to the host system, and just like the Radeon RX 6500 XT, the Radeon Pro W6400 lacks any sort of dedicated video encode acceleration.
AMD calls for only a 350W PSU, which should make the W6400 suitable for a wide range of small form factor and compact desktop systems. Incidentally, the low-power nature of the Navi 24 GPU also makes it suitable for mobile systems. In fact, AMD has a pair of mobile configurations in the pipeline, namely the Radeon Pro W6300M and W6500M.
The card itself uses the now-familiar YInMn Blue on its fan shroud, common to all Radeon Pros. As you can see, the Radeon Pro W6400 is a tiny HHHL card that takes up only a single slot and there are no frills front or back. If you pay close attention, you’ll also notice the dearth of contacts on the card edge; because the Radeon Pro W6400 has a PCIe Gen 4 x 4 interface, contacts that run the length of the PCIe x16 sized card edge are simply not needed.
That also means that the Radeon Pro W6400 is best suited to modern platforms that support PCIe Gen 4. Installing this card as an upgrade in a PCIe Gen 3-enabled system will cut slot bandwidth in half and limit performance in some applications.