Rumour: AMD Planning Bristol Ridge APU With 1024 Stream Processors – HD 7850 Performance

[Mr_Troll]

AMD Bristol Ridge Family Could Feature a 16 CU APU – GCN 3.0 With Twice The Shaders of Carrizo APU, Beefier Than Xbox One
 

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A rumor has emerged from Bitsnchips which alleges that AMD might introduce an insanely powerful APU under their Bristol Ridge family. The Bristol Ridge family is the name of the upcoming family of mainstream APUs that will be featured on the AM4 platform. We have previously detailed a range of SKUs that are bound to be placed in the family but the rumored APU might be packing a serious punch at consoles if its actually planned by AMD

 

AMD Planning Bristol Ridge APU With 1024 Stream Processors – HD 7850 Performance?
 

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The AMD Bristol Ridge family will be the first to hit the AM4 platform that is expected to launch in June 2016. AMD may use Computex as a platform to showcase their new motherboards and their first processor family to be featured on AM4. We have already seen a couple of leaks surrounding Bristol Ridge and rather than being a revolution to AMD’s APU family, the Bristol Ridge will mostly remain an evolution to the current Carrizo APUs.

The main thing to note is that Carrizo was only limited to mobility platforms (notebooks). We saw some late introductions of Excavator powered Athlons in the lineup but those are limited to current sockets. AM4 will be a huge departure from AM3+ and FM2+ as it brings the latest I/O and feature support to AMD motherboards with updated chipsets that allow the next iteration of storage and PCI-E capabilities. AM4 will be the first and foremost platform to support AMD’s latest Bristol Ridge APU family in mid-2016 and Zen based Summit Ridge FX family in Q4 2016

Bristol Ridge’s Flagship Part Rumored To Feature 16 GCN 3.0 Compute Units
 

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Straight from Bitsnchips, the rumor states that AMD is preparing a specific Bristol Ridge APU with 16 compute units that are based on the GCN 3.0 architecture. The 16 CUs mean that the chip would feature a total of 1024 stream processors which is the same amount of processors featured on the Radeon HD 7850. The Radeon HD 7850 graphics card launched back in 2012 and was particularly great in the budget department. Fast forward four years later and we could be on our way to see similar performance from an APU.

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This specific SKU would be based on the 28nm process node from GlobalFoundries which is confirmed. The site reports that due to the Bulk High Density design that is being used on Bristol Ridge family of processors which allows greater transistor density on a small die package, AMD could incorporate more beefier embedded GPUs on their APUs. A 1024 SP core would mean the doubling of the shaders compared to current generation Kaveri and Godavari APUs. T

 

he massive GPU part will require a lot of bandwidth to keep the bottleneck as low as possible since bandwidth became a noticeable bottleneck for even the 8 CU based Kaveri APUs on FM2+. AM4 will have support for dual channel DDR4 memory which can provide around 50 GB/s bandwidth which isn’t as much as the 153.6 GB/s featured on the discrete HD 7850 cards but lower clocks and power requirements will compensate for overall performance penalty where efficiency of the chip doesn’t get affected much.

 

A 16 CU part doesn’t seem way out of proportions as AMD already has beefier chips on the PlayStation 4. A Quad core chip with a 1024 SP GPU is very possible given the increase in density offered by the BHD process node. However, another possibility exists and that also makes a lot of sense for now.

 

 

A HD 7850 in an apu sound good to me.

 

Source:http://www.bitsandchips.it/english/52-english-news/6676-rumor-bristol-bridge-could-have-a-16cu-gpu

http://wccftech.com/amd-bristol-ridge-16-cu-apu/

 

[Citadelen]

Would be great in budget laptops.

[SurvivorNVL]

Now make it dual socket so it can replace my 7850 cross-fire.

[Agosto]

2 minutes ago, Citadelen said:

Would be great in budget laptops.

Not going to happen, for some reason OEMs don't like to spend 5$ more for a decent cooling solution on laptops with APUs installed. Look at the Carrizo mobile APUs... killed by their thermal solutions

[Whorax]

This is neat.

[Monkey Dust]

Looks like it could be a good option entry level gaming PCs, especially if you can still crossfire the APU with discrete GPU to give you a good upgrade path.

[Citadelen]

Just now, Agost said:

Not going to happen, for some reason OEMs don't like to spend 5$ more for a decent cooling solution on laptops with APUs installed. Look at the Carrizo mobile APUs... killed by their thermal solutions

Maybe, just maybe we'll get a laptop with decent dolling this time around.

[NuclearPeace]

1024 SPs won't really do much unless Polaris is significantly more memory efficient than GCN 1.2 is. 50GB/s is also generous given how slow AMD's current DDR3 IMC is on Steamroller.

[TheRandomness]

So... 7850 = 265 = 370.. Decent.

[TheRandomness]

2 minutes ago, DEcobra11 said:

Something against broadwell

Well, broadwell is a 750.... so yeah

[BonSie]

Well AMD has to with the Intel IGPs getting a lot better.

[pit5000]

sounds nice, but keep in mind that you will need a ton of really fast memory if you really want to match that 7850 in performance

[SuperCookie78]

Wouldn't this be faster than a 7850 because it would be gcn 3.0? 

[patrickjp93]

No, not unless Bristol Ridge is getting quad-channel DDR4 support. It's absolutely pointless to make an iGPU this big for anything other than bragging rights. I'm calling this rumor as BS right now.

[Mister Snow]

It would be a monster if they went for 14nm + some HBM in that configuration. This doesn't make much sense since it would be bandwidth starved no matter how powerful the GPU. 

[Prysin]

3 hours ago, Agost said:

Not going to happen, for some reason OEMs don't like to spend 5$ more for a decent cooling solution on laptops with APUs installed. Look at the Carrizo mobile APUs... killed by their thermal solutions

no, they got killed by running singlle channel RAM. Because the OEMs pressured AMD into making a single socket for their super low end stuff AND their top end APUs... the super low end stuff can ONLY run single channel RAM....

 

with only 12GB/s memory bandwidth AT BEST, they are starved to death on memory bandwidth.... Anandtech made a HUGE review about it. You can read it here.

http://anandtech.com/show/10000/who-controls-user-experience-amd-carrizo-thoroughly-tested

[PlayStation 2]

2 hours ago, TheRandomness said:

So... 7850 = 265 = 370.. Decent.

I'd say 7850 = 98.75% R7 265 = 95% R7 370, at stock of couse  

2 hours ago, TheRandomness said:

Well, broadwell is a 750.... so yeah

The Iris Pro Graphics 6200 is like 10%? faster than the R7 in the 7850K so not even close to a 7850 lol

 

2 minutes ago, Prysin said:

no, they got killed by running singlle channel RAM. Because the OEMs pressured AMD into making a single socket for their super low end stuff AND their top end APUs... the super low end stuff can ONLY run single channel RAM....

 

with only 12GB/s memory bandwidth AT BEST, they are starved to death on memory bandwidth.... Anandtech made a HUGE review about it. You can read it here.

http://anandtech.com/show/10000/who-controls-user-experience-amd-carrizo-thoroughly-tested

I really hope AMD pressures the fuck out of OEMs to make better laptop designs, but it's not gonna happen.

[Prysin]

7 minutes ago, Dan Castellaneta said:

I'd say 7850 = 98.75% R7 265 = 95% R7 370, at stock of couse  

The Iris Pro Graphics 6200 is like 10%? faster than the R7 in the 7850K so not even close to a 7850 lol

 

I really hope AMD pressures the fuck out of OEMs to make better laptop designs, but it's not gonna happen.

they cant...

they NEED to sell units, they have next to no bargaining room with their current economy.

 

If they go in slamming their fist on the table and claiming "this is how you gonna do it"... then the OEMs just gonna say, "k, bai"... because they dont want to minimize profit, and they know damn well AMD cannot lose any profit at all.

[PlayStation 2]

Just now, Prysin said:

they cant...

they NEED to sell units, they have next to no bargaining room with their current economy.

 

If they go in slamming their fist on the table and claiming "this is how you gonna do it"... then the OEMs just gonna say, "k, bai"... because they dont want to minimize profit, and they know damn well AMD cannot lose any profit at all.

yep

and that's what sucks about the laptop market, anything under $600 is more than likely to be a shite design

[pit5000]

What would truly be impressive is if they put a Fury X/Nano chip into it. Would be amazing to have HBM inside a CPU/APU.

[Misanthrope]

Even with ddr4 it would be a bottleneck for that performance as mentioned in the article, so I'm skeptical.

[Prysin]

2 hours ago, patrickjp93 said:

No, not unless Bristol Ridge is getting quad-channel DDR4 support. It's absolutely pointless to make an iGPU this big for anything other than bragging rights. I'm calling this rumor as BS right now.

and since ITX is dual channel at most. it is totally pointless... And ITX and laptops are the only damn place where APUs make sense anyway

 

aint gonna be more then 512SPs, maybe 768SPs clocked way low, at the very very most....

[BobbyG2]

5 hours ago, patrickjp93 said:

No, not unless Bristol Ridge is getting quad-channel DDR4 support. It's absolutely pointless to make an iGPU this big for anything other than bragging rights. I'm calling this rumor as BS right now.

I thought the AM4 socket was getting quad channel support? Also,  having a 4GB stack of HBM2 on die would definitely fix it. I remember there were rumors of AMD putting stacks of HBM on die for AM4 APUs. Even if it's only HBM1, 1GB with really good memory management to get the best out of that and quad channel DDR4 should be plenty for a 7850 class GPU, i'd imagine? We're talking a GPU meant for medium quality 1080p.

[patrickjp93]

10 minutes ago, BobbyG2 said:

I thought the AM4 socket was getting quad channel support? Also,  having a 4GB stack of HBM2 on die would definitely fix it. I remember there were rumors of AMD putting stacks of HBM on die for AM4 APUs. Even if it's only HBM1, 1GB with really good memory management to get the best out of that and quad channel DDR4 should be plenty for a 7850 class GPU, i'd imagine? We're talking a GPU meant for medium quality 1080p.

Just because AM4 will have it doesn't mean the Bristol Ridge platform will support that many channels, and I doubt it will. These are Carrizo SOCs for desktop. I doubt the die will change at all between the FX8800P and these chips. Second, you're not getting 4GB of HBM or HBM2 on-package in a basic consumer part. Seriously what planet are you people on? Further, dual-channel DDR4 has as much bandwidth potential as single-channel HBM1. All you'd do is change the size of the data chunks moving with each call. Medium quality? Broadwell GT3e and Godavari can already do 1080p medium. If you want to bring in AA and other special effects, that's high-quality. Why do you people so easily believe this? AMD cannot afford to be spending so much money on a platform that is planned to be phased out with the release of Zen. There is no reason for AMD to change the Bristol Ridge dies away from what they already exist as on Carrizo. It's too much money spent on new masks for the foundry to be worth it.

[MEC-777]