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AMD Raven Ridge 'Zen APU' Thread

Sweepr said:
According to Fudzilla:

- 4 Zen Cores, 512KB L2 each, 8MB L3 shared
- Up to 11 GCN 4th Generation Cores (704 SPs)
- DDR4-3200, ECC (some models)
- H.265 10-bit encode and decode, VP9 decode
- Up to 4 DisplayPort 1.3s, an HDMI 2.0 or DisplayPort 1.4
- Next generation chipset with USB 3.1, including USB Type-C, NVMe
- 45-65W TDP (socket AM4 version)
- 2017

www.fudzilla.com/news/processors/41037-zen-apu-to-have-polaris-gpu
Click to expand...

Needs dem clockspeeds. 😱
 
Unsurprisingly, no HBM mentioned.

Fudzilla also said this in other article:

The real change is expected in later part of 2017 when Intel is expceted to launch its first 10nm Cannonlake processors. As far as Fudzilla is aware, AMD will skip the 10nm and go directly to 7nm after 14nm, but this is another story all together.
Click to expand...
 
Well, with DDR4, memory compression, and more SP, we could see some graphical improvements. But they will also be competing with new 14/16 nm dgpus from both AMD themselves and nVidia, which will put them just as far behind (if not more so) a dgpu than they were when all dgpus were still 28 nm. Could have a place in mobile.

But really, until we get HBM or some other high bandwidth memory, APUs for the desktop will be a low end solution. And no, I dont consider intel's edram an adequate solution, or maybe their gpus just suck, but I have pretty much given up on Intel igpus.
 
frozentundra123456 said:
But really, until we get HBM or some other high bandwidth memory, APUs for the desktop will be a low end solution. And no, I dont consider intel's edram an adequate solution, or maybe their gpus just suck, but I have pretty much given up on Intel igpus.
Click to expand...

The amount of bandwidth you gain with ED ram vs really good DDR4 or gDDR5 is minimal. ED ram made sense a couple of years ago but now its use is becomming less and less.

Note latency is not the same thing as bandwidth, cpu tasks like faster retrieval and thus lower latency, bandwidth is what graphics want.
 
Sweepr said:
- 4 Zen Cores, 512KB L2 each, 8MB L3 shared
- Up to 11 GCN 4th Generation Cores (704 SPs)
- DDR4-3200, ECC (some models)
- H.265 10-bit encode and decode, VP9 decode
- Up to 4 DisplayPort 1.3s, an HDMI 2.0 or DisplayPort 1.4
- Next generation chipset with USB 3.1, including USB Type-C, NVMe
- 45-65W TDP (socket AM4 version)
Click to expand...

So essentially Raven Ridge will look a lot like Intel's current desktop 4C/8T quad-core offerings. It'll interesting to see if RR performs in the same league. But at least they could put some pressure against 2C/4T i3's.

Also, the 11th GPU CU could just be there as a buffer for defects.
 
Well the 3200 DDR4 out of the box is refreshing. Wasn't zen planned for 2400 ? Nice to see their ZEN - APU's given a bit more bandwidth.
 
frozentundra123456 said:
But really, until we get HBM or some other high bandwidth memory, APUs for the desktop will be a low end solution. And no, I dont consider intel's edram an adequate solution, or maybe their gpus just suck, but I have pretty much given up on Intel igpus.
Click to expand...

By the time this APU launches Radeon RX 460 will be around one year old, offering 16 CUs north of 1 GHz for <$99. Compression helps, but Polaris 11 has the same tech and more bandwidth.

Raven Ridge: DDR4-3200 in dual-channel = 51.2 GB/s for the entire APU
Radeon RX 460: 128-bit 7 Gbps = 112 GB/s for the GPU
 
LTC8K6 said:
IIRC, it was Bristol Ridge that was hard limited at 2400?
Click to expand...

Yes. Bristol Ridge and Carrizo have the same memory limitations as Kaveri.

Raven Ridge looks pretty good actually. No HBM2 is a bit disappointing, but I still have to wonder how HBM2 will fit into the advertised AM4 ecosystem. Methinks HBM2 will require a new platform. I'd prefer to be wrong about that.
 
DrMrLordX said:
Yes. Bristol Ridge and Carrizo have the same memory limitations as Kaveri.

Raven Ridge looks pretty good actually. No HBM2 is a bit disappointing, but I still have to wonder how HBM2 will fit into the advertised AM4 ecosystem. Methinks HBM2 will require a new platform. I'd prefer to be wrong about that.
Click to expand...

HBM2 is really, really, really expensive just like I said earlier. If Polaris 10 is too cheap to support HBM2, why would any consumer grade APU use it?
 
What if the 8MB L3 Cache can be used by the iGPU as well ??

Also, only 4x CPU Cores and only 11 CUs will make it a very small die. Certainly bellow 200mm2 mark.
 
Arachnotronic said:
HBM2 is really, really, really expensive just like I said earlier. If Polaris 10 is too cheap to support HBM2, why would any consumer grade APU use it?
Click to expand...

It will come down in price, like DDR4 has. This time next year for a Zen APU? We'll see. If it did come with HBM2 on board, that would change the game quite a bit.
 
AtenRa said:
Premium product(Laptops), higher priced than dGPUs.
Click to expand...

The silicon that goes into those premium priced laptops isn't more expensive than a dGPU that could support the cost baggage that HBM2 brings.

I don't think people realize just how expensive this memory technology is to implement.
 
I think AMD is going to have a hard time convincing OEMs to use DC DDR4 3200.

AtenRa said:
What if the 8MB L3 Cache can be used by the iGPU as well ??
Click to expand...

I don't see why not. It's still going to be bandwidth limited though and maybe power limited (depending on how efficient Zen is). It's a little disappointing they only have 704 cores but that is likely more because of the lack of bandwidth than anything else.
 
jpiniero said:
I think AMD is going to have a hard time convincing OEMs to use DC DDR4 3200.



I don't see why not. It's still going to be bandwidth limited though and maybe power limited (depending on how efficient Zen is). It's a little disappointing they only have 704 cores but that is likely more because of the lack of bandwidth than anything else.
Click to expand...
Even Intel has a hard time to introduce their Celeron and Pentium U and Core m based ones.
 
My Raven Ridge specifications.

CPU Die - 45W ~ Standard Design Power // Summit Ridge B0
2.5 GHz(freq_nom) -> ?3.8 GHz(freq_max) // 8 cores - 16 threads // 128-bit DDR4-3200(JEDEC) - DDR4-4266(AMP-1.35v)
-- GMI <64 GB/s --
GPU Die - 65W ~ Standard Design Power // Vega 12
0.9 GHz(freq_nom) -> ?1.6 GHz(freq_boost) // 1024 ALUs // 1024-bit HBM2 4 GB "G-Cache"

125W TDP for FX-800X?

Naples -> 4 SR-B0 15W SDP dies + Vega 10 65W SDP. ~~140W TDP.
GMI -> GPU <128 GB/s
GMI -> CPU <128 GB/s

HBM1 = $8 per GB.
HBM2 = $6 per GB.
 
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