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Forums - PC Discussion - DirectX 12 is a game-changer for PC enthusiasts and AMD in particular

Jizz_Beard_thePirate on 09 May 2015

How interesting, I really hope that all this allows amd to get back on their feet and really drive the competition cause that is really what the hardware industry needs atm



                  

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Scoobes on 09 May 2015

For extra info, it looks like the CPU scaling only benefits up to 6 cores:

http://techreport.com/news/28026/amd-shows-off-directx-12-performance-with-new-3dmark-benchmark

Still a lot better than DX11's 2 core scaling, but an even cheaper FX-6300 or similar 6-core CPU may give just as much perfomance gain as an FX-8350/8-core.




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Scoobes on 09 May 2015
JRPGfan said:

"The performance however is still down to physical core count, not just "brand". a 4 core AMD will still be outperformed by a 4 core intel."

Thats just it, today people compare a 4core intel against a 8core AMD cpu.
Because you dont need the extra 4 cores from intel side, you have Hyper threading, and stronger single core performance.

Thats how things work today.

and most of the time:  4core intel > 8 core amd cpu.

However thats not how things will work when DX12 comes out.

You will probably see alot of 4 core Intel cpus get beat by the 8core amd versions, you kinda expected to be weaker than the 4core intel ones.

According to the graphs in the link, hyperthreading still gives a significant performance boost (equivalent to approx. 1GHz overclock without HT).

 

On top of this, the latest i5 (so 4-cores with no hyperthreading), still manages to outperform the 8-core FX-8350 in DX12, although you could argue they're close to parity. Hopefully the performance boost still forces Intel to lower prices or add extras like hyperthreading to the i5s or more cores to the i7s in order to be more competitive.

Mainstream CPUs GeForce GTX 750 Ti Radeon R7 260X GeForce GTX 970 Radeon R9 290X
i5 4690K DX11 Single Thread 1.2m 1.1m 2.0m 1.1m
i5 4690K DX11 Multi-Thread 1.4m 1.1m 1.0m 2.4m
i5 4690K DX11 Mantle - 13.3m - 15.2m
i5 4690K DX12 7.5m 13.3m 16m 15.9m
FX 8350 DX11 Single Thread 1.2m 0.7m 1.2m 0.7m
FX 8350 DX11 Multi-Thread 2.1m 0.7m 2.1m 0.7m
FX 8350 DX11 Mantle - 10.0m - 10.3m
FX 8350 DX12 7.1m 12.4m 13.5m 12.7m



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Chazore on 09 May 2015

Good news, although I'm not set on AMD hardware I still think it's a good thing they get back on their feet fast enough to force Nvidia and Intel to stop slacking their asses off, hopefully forcing those two to innovate a little more and not charge such high prices for little gain.

Either way: https://www.youtube.com/watch?v=URWNPe5tykE



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