AMD driver confirms Radeon Rx 300 contains mostly rebranded GPUs

Posted on Monday, March 23 2015 @ 11:23 CET by Thomas De Maesschalck
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The rumors from a couple of weeks ago that most of AMD's Radeon Rx 300 series GPUs will be rebrands turns out to be true. We know there will be a new flagship with HBM memory, the Radeon R9 390X, but most of the other chips in the refreshed lineup are little more than rebrands.

VideoCardz discovered evidence for this claim by analyzing the DeviceID information in one of the .inf files of AMD's newly released Catalyst 15.3 beta driver.

AMD Radeon R9 380 series remains somewhat a mystery
We know the Radeon R9 390 series will be completely new but the R9 380 lineup remains somewhat of a mystery, the latest news mentions nothing about this chip. Possibly the R9 380(X) will be a rebrand of the current R9 290(X) series but there's less certainty about this than the GPUs mentioned below.

AMD Radeon R9 370 is another Pitcairn
The DeviceID information suggests the Radeon R9 370 is basically the fourth arrival of Pitcairn. The R9 370 is based on Trinidad, which is based on Curacao which in turn is based on Pitcairn. The Pitcairn GPU first arrived in 2012 as the Radeon HD 7870, later it was renamed to Curacao and launched as the Radeon HD 8860 and ten months later Curacao turned up in the Radeon R9 270(X) series. The R9 370 will be based on the R9 270 by the way, not the faster R9 270X.

AMD Radeon R9 360 is another Bonaire
The driver also confirms the Radeon R9 360 is part of the Bonaire family, but to confuse everyone even more AMD is rumored to rename Bonaire to Tobago so it seems a little newer. The R9 360 reportedly has 896 stream cores.

AMD Radeon R7 350X, R7 340 and R5 340X are new Oland GPUs
Oland makes its return with the R5 and R7 300 series. VideoCardz speculates these cards are intended for the OEM PC market and will not be sold in the retail channel. They will have up to 384 stream processors and variants with either DDR3 or GDDR5 memory.

AMD Radeon R5 310 is Caicos for the ultra-low-end
For the entry-level market AMD is rebranding Caicos to AMD Radeon R5 310. This chip was previously known as Radeon 7470, 8470 and R5 235.

The mobile rebrands
AMD didn't do a lot of effort on its new entry-level to mainstream desktop GPUs and the same is true for the Radeon Rx M300 laptop lineup. Here's a list of the rebrands, with desktop naming for clarity because this is al getting very confusing:
Radeon M300 series (Cores/TMUs/Rops):
AMD Radeon R9 M375X — Cape Verde XT — 640/40/16
AMD Radeon R9 M375 —- Cape Verde XT — 640/40/16
AMD Radeon R7 M370 —- Oland XT ———- 384/24/8
AMD Radeon R9 M360 —- Cape Verde XT — 640/40/16
AMD Radeon R7 M360 —- Topaz XT ———- 384/24/8
AMD Radeon R7 M350 —- Oland XT ———- 384/24/8
AMD Radeon R7 M340 —- Oland XT ———- 384/24/8
AMD Radeon R7 M340 —- Topaz XT ———- 384/24/8
AMD Radeon R5 M335 —- Oland XT ———- 384/24/8
AMD Radeon R5 M330 —- Oland XT ———- 384/24/8
AMD Radeon R5 M320 —- Oland XT ———- 384/24/8
AMD Radeon R5 M320 —- Oland PRO ——- 320/20/8
AMD Radeon R5 M315 —- Topaz ————– 384/24/8

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