AMD Details Asynchronous Shaders In DirectX 12, Promises Performance Gains

[Martini1991]

At the moment the biggest APU we have: 4 CPU Cores and a HD 7750 iGPU at 95 Watts.

With the bandwidth issue it's no where close to a GDDR5 7750 in performance though? If the bandwidth limitation didn't exist, and the GPU/CPU was going full pelt, would it go over 95w?

 

[Boomstick777]

Boom, you've basically been repeating the same line for about 2 years now.

???

I expect it will take a few more years for APU's to be useful at high res. So until then I'll still be waiting..

This bothers you why?

 

[Martini1991]

???

I expect it will take a few more years for APU's to be useful at high res. So until then I'll still be waiting..

This bothers you why?

The "The next year, 1080p gaming will be a possibility with an APU" on a PC.

You basically always say "Next year APU will do X or Y".

It doesn't bother me, it's an observation. Until the bandwidth on APU's is sorted, then AMD aren't providing a 1080p killer, let alone 1440p.

The PS4's got it down pretty excellent though however, which is obviously down to AMD. Just they haven't provided anything near that at retail.

 

[humbug]

With the bandwidth issue it's no where close to a GDDR5 7750 in performance though? If the bandwidth limitation didn't exist, and the GPU/CPU was going full pelt, would it go over 95w?

Its going full pelt with the bottleneck.

Actually, my CPU generates Less heat in DX12 pulling 15m DrawCalls than it does in DX11 pulling just <1m.

I don't know why that is but i suspect its because even in DX11 its still using all 8 cores just as it is in DX12, the difference in DX11 is massive latency and working harder to push through the bottleneck.

I don't think its any different for bandwidth bottlenecked GPU's

 

[K1LaW8tt5]

???

I expect it will take a few more years for APU's to be useful at high res. So until then I'll still be waiting..

This bothers you why?

Yes gaming at 1080p with mitx apu will be sweet and worth the wait.

 

[Davedree]

^^

Works on PS4, cool !

Thought this would be something only Xbox One would take advantage with DirectX 12.

That's good to know that PS4 can use this as well.

Xbox only has 2 ace units, ps4 has 8 like hawaii.

 

[Davedree]

Yes gaming at 1080p with mitx apu will be sweet and worth the wait.

We could have had this 1/2 years ago from Amd,
Also AMd had excess pitcairn and cape verde to ship out, they could have owned the htpc and custom nucs and steam boxes overnight, by putting these dies to use on a pcb with either mxm slot or pcie lanes bga soldered onto a mitx mboard, and sell it as a high spec enthusiast apu.
Hopefully intel can provide us with a competitive solution, as AMD don't have anything new to put on the shelves until 2016, maybe even 2017.

 

[Davedree]

Its going full pelt with the bottleneck.

Actually, my CPU generates Less heat in DX12 pulling 15m DrawCalls than it does in DX11 pulling just <1m.

I don't know why that is but i suspect its because even in DX11 its still using all 8 cores just as it is in DX12, the difference in DX11 is massive latency and working harder to push through the bottleneck.

I don't think its any different for bandwidth bottlenecked GPU's

Actually kaveri by default is broken, it can't hold the cpu cores at full boost clocks when the gpu is fully utilised. You havd to use mrstweaker to modify the p-state to stop the cpu permanently throttling. The overhead of mantle over dx11 I agree does help with communication over cpu to gpu dma engine.

 

[eddyr]

Yeah me to, when APU's can cope at 1440P I'll make the switch. HBM, die shrink and newer architecture should make these upcoming APU's perform significantly better. Probably fine for 1080P gaming. Still they are a long way off, 2016 should be good year for AMD.

1440p will be a ways off at decent IQ. An APU with R9 285-290 level GPU with ~150watt tdp and a quad core cpu is not pushing the boat out too much for the near future though. One can dream, and probably will keep dreaming .

Actually kaveri by default is broken, it can't hold the cpu cores at full boost clocks when the gpu is fully utilised. You havd to use mrstweaker to modify the p-state to stop the cpu permanently throttling. The overhead of mantle over dx11 I agree does help with communication over cpu to gpu dma engine.

That standard would also put many intel cpu's under the broken category.

 

[Boomstick777]

The "The next year, 1080p gaming will be a possibility with an APU" on a PC.

You basically always say "Next year APU will do X or Y".

It doesn't bother me, it's an observation. Until the bandwidth on APU's is sorted, then AMD aren't providing a 1080p killer, let alone 1440p.

The PS4's got it down pretty excellent though however, which is obviously down to AMD. Just they haven't provided anything near that at retail.

Ah ok, yeah I thought you were saying me being consistent bothered you

The past couple years have seen no progression. We've only had rehashes, tweaks.

Next year is a lot of changes, new architecture, a die shrink and also HBM for APU. This will def result in a big uplift in performance I would fully expect a decent gaming experience at 1080P. Still a ways off for 1440P, maybe possible when AMD target 4K. That's when I would wanna switch to APU.

1440p will be a ways off at decent IQ. An APU with R9 285-290 level GPU with ~150watt tdp and a quad core cpu is not pushing the boat out too much for the near future though. One can dream, and probably will keep dreaming .

+1 would be great, AMD will get there and I expect APU's to become way more mainstream for gamers. Along with MITX, smaller builds becoming more popular.

 

[humbug]

I think we also need to get away from measuring AMD's performance per watt as (Vishera) FX-8350 and Hawaii (R9 290X).

On the CPU side Kaveri is more power efficient than Vishera, Carrizo is more than 30% more efficient than Kervari. it also has 20% more transistors per size

If you take that into context an Excavator FX-8350 would be an 85 watt CPU with some unknown performance boost.

IMO the performance per watt of their GPU's will also be brought down somewhat by this coming generation.

What we are talking about here is beyond the Carrizo CPU which is already being introduced. 8 ARM IP 64Bit Cores @ 16nm is probably a 60 Watt CPU and a lot faster than an FX-8350.

 

[Telecaster]

Up to 300W with AIO will be fine. Think about it peeps a single AIO with small RAD can handle the 295X2 (500W TDP), it cools 2 x 290X GPU's . A single APU with AIO will be absolutely fine !!
.

But isn't a decent proportion of that TDP for the RAM, which the AIO doesn't cool? What proportion of the 295x2 500W TDP is allocated to the core/AIO cooler?

I think it's more of an issue than you're giving it credit for, the whole idea of having a high end APU would be to reduce the size of box needed for decent performance, which defeats the purpose if you need to house an AIO.

Plus they seem to be miles behind, these things can barely run 1080p at the minute and yet we're already on the cusp of 4k gaming rolling out more mainstream, by the time we get a high end 1080p gaming APU where will the rest of us be?

 

[LtMatt]

Major new features of DirectX® 12

New blog up for peeps interested in DX12 and what's it's going to offer for AMD users.

As the PC graphics industry continues down the path of low-overhead graphics APIs, today I wanted to bring you some new details on two significant features of DirectX® 12. These features are called “multi-threaded command buffer recording” and “async shaders,” and they are poised to make a significant difference for gamers everywhere. Let’s take a look at what they do and why they matter.

Source
http://community.amd.com/community/...g/2015/04/22/major-new-features-of-directx-12

 

[gpuerrilla]

OK. So where's the chart war displaying the i3 smoking the FX?

 

[humbug]

OK. So where's the chart war displaying the i3 smoking the FX?

lol

 

[BS Dave]

I hope that game's good because it looks incredible!