AMD Radeon R9 285X spotted

Published: Nov 8th 2016, 12:31 GMT

The Radeon R9 285X, the model that I told you about few times before, was canceled by AMD shortly before launch. To our surprise, it has finally made its first public appearance, more than 2 years after initial launch date.

Tonga XT in RX 285X

This model was never just a rumor. It was supposed to arrive a month after R9 285, although it was quickly canceled. Plans to launch 285X were probably scrapped due to poor reception of Tonga power efficiency over Tahiti-based models — the R9 285X would clearly have higher power requirements than R9 285, so it would only get worse).

The photos were posted by ZealotKi11er, who is a member of forums:


The PCB and new C765 board, our database has no record of such board number, which means it was never made public:


So we learn from this that R9 285X was supposed to get 6+8pin power connector and 5+1 phase design. The GPU would be supported by 3GB of GDDR5 memory as confirmed by GPU-Z validation:


And yes, it means that full Tonga initially had 2048 Stream Processors and 384-bit memory interface. This GPU was never released in such configuration. The only variant that was made public was 2048 SP version, but with 256-bit memory bus for Macs (Amethyst R9 M295X). It was also later available as R9 380X, but still with 256-bit bus (I guess AMD just wanted 4GB card, 384-bit would either mean 3GB or 6GB).

The user also tested it in Time Spy benchmark. It scored 3104 GPU points:


And R9 285 result I found through Google (you can probably find more accurate result):


Comment Policy
  1. Comments must be written in English and should not exceed 1000 characters.
  2. Comments deemed to be spam or solely promotional in nature will be deleted. Including a link to relevant content is permitted, but comments should be relevant to the post topic. Discussions about politics are not allowed on this website.
  3. Comments and usernames containing language or concepts that could be deemed offensive will be deleted.
  4. Comments complaining about the post subject or its source will be removed.
  5. A failure to comply with these rules will result in a warning and, in extreme cases, a ban. In addition, please note that comments that attack or harass an individual directly will result in a ban without warning.
  6. VideoCardz has never been sponsored by AMD, Intel, or NVIDIA. Users claiming otherwise will be banned.
  7. VideoCardz Moderating Team reserves the right to edit or delete any comments submitted to the site without notice.
  8. If you have any questions about the commenting policy, please let us know through the Contact Page.
Hide Comment Policy