Along with today’s announcement of the OEM mobile Radeon M300 series, AMD has also announced the OEM desktop Radeon 300 Series. This was a rather low-key launch with only a very brief press release on the matter along with AMD updating the OEM Radeon website, and as one might expect this is for good reason.

We’ve been through this event once before – most recently with the OEM HD 8000 series – so our regular readers will know the drill. Whether or not GPU manufacturers have new GPUs, OEMs will want new parts to sell, which leads to GPU manufacturers engaging in rebranding and subtle spec changes to create new parts to sell under a new series name. In AMD’s case this is complicated by the fact that they have been updating their GPUs in a piecemeal fashion – Hawaii, Bonaire, and Tonga have all landed at very different times – and AMD is not done yet as they’re going to be launching a new high-end GPU this quarter. So AMD needs a product lineup to include both the new part and their retained parts under a single brand, which leads to another incentive for rebadging.

In any case, as these are OEM parts I advise not reading into the names and specifications too much. AMD’s OEM and Retail parts can be very different at times – and at other times there aren’t any retail parts at all (HD 8000) – so these OEM parts aren’t necessarily indicative of what we’re going to see in retail in the coming months. Though based on AMD’s actions with the Radeon 200 series, we may yet see a similar rebadge happen for the retail 300 series.

AMD OEM Desktop Radeon R9 300 Series
  AMD Radeon HD R9 380 OEM AMD Radeon R9 370 OEM AMD Radeon R9 360 OEM
Was Variant of R9 285 Variant of R7 265 Variant of R9 260 (OEM)
Stream Processors 1792 1024 768
Texture Units 112 64 48
ROPs 32 32 16
Boost Clock <=918MHz <=975MHz <=1050MHz
Memory Clock 5.5GHz GDDR5 5.6GHz GDDR5 6.5GHz GDDR5?
Memory Bus Width 256-bit 256-bit 128-bit
Transistor Count 5.0B 2.8B 2.08B
GPU Tonga Pitcairn Bonaire
Manufacturing Process TSMC 28nm TSMC 28nm TSMC 28nm
Architecture GCN 1.2 GCN 1.0 GCN 1.1

Starting things off, we have the OEM R9 series. Today’s release tops out at R9 380 OEM (I can only imagine AMD is saving 390 for their new GPU), along with the R9 370 OEM and R9 360 OEM. The R9 380 OEM appears to be a variant of the desktop R9 285, which marks the first time that a Tonga card has been released in an OEM configuration. The quoted clockspeeds are identical to the retail R9 285, which means the “up to” GPU clockspeed should result in the R9 380 OEM being perfectly identical to the R9 285 if given its maximum configuration.

Meanwhile for the R9 370 OEM we have a cut-down Pitcairn card, with only 1024 of its 1280 SPs active. This makes it a variant of the retail R7 265, though with a slightly higher maximum GPU clockspeed. Truth be told I’m a bit worried to see a fresh Pitcairn part in 2015; Pitcairn has been a workhorse for AMD, having now survived into its 4th generation of cards. However at over 3 years old and based on GCN 1.0, it lacks more modern functionality such as the ability to decode 4K H.264 video files, AMD’s improved power management technology, and support for AMD’s Freesync technology.

Finally we have the R9 360 OEM. This appears to be a variant of the R9 260 OEM, featuring an AMD Bonaire GPU with only 768 of its 896 SPs enabled. Oddly, the listed memory bandwidth for the part, 104GB/sec, would require 6.5GHz GDDR5 memory given Bonaire’s 128-bit bus. I suspect that may be an error on AMD’s part, though it’s not outside the realm of possibility. In any case the R9 360 OEM also appears to be a regression from the R9 260 OEM; the latter was a fully enabled Bonaire part, whereas this one is not. At the very least it’s GCN 1.1 based, so it will have the newer features that the Pitcairn based R9 370 OEM lacks.

AMD OEM Desktop Radeon R7 300 Series
  AMD Radeon HD R7 350 OEM AMD Radeon R7 340 OEM
Was R7 250 R7 240
Stream Processors 384 384
Texture Units 24 24
ROPs 8 8
Boost Clock <=1050MHz <=780Hz
Memory Clock <=4.5GHz GDDR5
<=4.5GHz GDDR5
Memory Bus Width 128-bit 128-bit
GPU Oland Oland
Manufacturing Process TSMC 28nm TSMC 28nm
Architecture GCN 1.0 GCN 1.0

Up next is the R7 300 OEM series, which is composed of the R7 350 OEM and R7 340 OEM. Both of these cards are straight-up rebadges of AMD’s existing R7 250 OEM and R7 240 OEM parts, and both are based on the same GCN 1.0 Oland GPU. With just 384 SPs these are low cost, low performing parts. The difference between the two is their clockspeeds, with R7 350 being clocked quite a bit higher, whereas R7 340 is clocked lower in exchange for being available as a low-profile card. Unfortunately the memory situation is quite complex here, as these cards can be equipped with either GDDR5 or DDR3; the GDDR5 versions will of course be the much faster versions.

Among its other quirks, Oland lacks a hardware video decoder. So these parts are likely to be paired with low-end AMD Kaveri APUs, possibly for a Dual Graphics configuration.

AMD OEM Desktop Radeon R5 300 Series
  AMD Radeon HD R5 340 OEM AMD Radeon R5 330 OEM
Was Variant of R5 240 Variant of R5 240
Stream Processors 320 320
Texture Units 20 20
ROPs 8 8
Boost Clock <=825MHz <=855Hz
Memory Clock ? GDDR5/DDR3 ? DDR3
Memory Bus Width ? ?
GPU Oland Oland
Manufacturing Process TSMC 28nm TSMC 28nm
Architecture GCN 1.0 GCN 1.0

Finally, for the R5 300 OEM series we have two more Oland parts. These are ultra low end, low-profile single slot parts. AMD does not even publish the GPU bandwidth numbers for these parts, and as a result I suspect these may be 64-bit parts to further cut down on costs. Of particular note, the R5 330 lacks HDMI support, so it’s almost certainly geared towards APAC markets where VGA is still in common use.

Wrapping things up, AMD's press release mentions that these new OEM parts are shipping now. HP is already confirmed to be shipping PCs with these new cards, and we expect other OEMs to ramp up as well as they launch their back-to-school season computers.

Source: AMD

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  • piroroadkill - Thursday, May 7, 2015 - link

    This is a disaster for AMD. Brand new cards that won't support Freesync, and believing the 285 rebranded straight to a 380 is in a competitive position is absolute lunacy.
  • Oxford Guy - Thursday, May 7, 2015 - link

    The people who buy low-end OEM stuff probably are not in the target market.
  • ET - Thursday, May 7, 2015 - link

    I'm very disappointed by GCN 1.0 being carried to yet another generation.
  • ImSpartacus - Thursday, May 7, 2015 - link

    Yeah, pitcairn is a champ, but it's not THAT good.
  • silverblue - Friday, May 15, 2015 - link

    There are rumours that the Pirate Islands chips will be the 400 series, consisting of Tobago (GCN1.1), Trinidad (GCN1.0), Grenada (GCN1.1) and Fiji (GCN1.2) GPUs. It's unclear what GCN1.0 parts would come across but I'm at least expecting the top end Tahiti as the 470X.

    I hope to not see Pitcairn. Curacao has been rumoured but current implementations are too small/cut down.
  • zepi - Thursday, May 7, 2015 - link

    For me it seems that AMD is not even trying to be competitive anymore.

    GM206 is pretty much on par with this cut-down Tonga in performance with 100w less TDP or something like that and the age old Maxwell Gen 1 beats comfortably all of the other cards.

    The street prices are mostly just a reflection on how "good" these chips / cards are and manufacturers set the price depending on their competitiveness. (goodness being measured by the perception of the card by potential customers). Nvidia is expensive, because they can get away with it while AMD offerings are so weak.

    I guess this is down to lot of facts likeTSMC problems hurting AMD more than Nvidia. NV has plenty of resources to spend so they were able GM200 series on 28nm while AMD probably had to concentrate their more limited rnd-effortss to get products ready for when the "big thing" comes with next process upgrade.
  • Torashin - Thursday, May 7, 2015 - link

    I really hope you're wrong about them rebadging Pitcairn again... that would be truly disgraceful.
  • silverblue - Friday, May 15, 2015 - link

    This would only be the second retail series with a Pitcairn part, but agreed, it needs to go.
  • P39Airacobra - Monday, June 1, 2015 - link

    Actually it will be the third, Remember the 8860 OEM and R7 265 and R7 265X OEM and R9 270 and R9 270X are called Curacao, And the 8870 OEM and 7870 is called Pitcarin, But they are the same exact chip. So this will be allot of releases of the same GPU. AMD is becoming like a psychotic merry go round!
  • rtho782 - Thursday, May 7, 2015 - link

    So, I've been saying for a while I don't think AMD have two different Fiji Silicons in development. I also don't think anything but 390/390x will come out with HBM, so the options are:

    380 is a rebrand of 290 (looks more likely now for the retail part, with OEM being a 285 rebrand)
    Fiji has both a HBM interface and a GDDR5 memory controller, wasting die space on both the 390 and the 380, and, as we're at the limits of 28nm because people's obsession with mobile devices means there is no sub 28nm high power process, means Fiji will be gimped.

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