AMD fx octa core cpus paired with directx 12 games cpu utilization

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It can't run better. Just AMDs 8cores are too slow already, and too old, you will have to wait for the new generation from AMD if you want them to be able to compete.
Hey,

I believe what you are asking is something like an FX-8350 with eight physical cores vs an i7-6700K that has four cores with hyperthreading?

The answer is:
First of all, games will vary a LOT by how much CPU load there is.

The i7 will kick ass since each core is faster by about 54% (but it has less of them). Now let's say the game actually could use 100% of an FX-8350's processing. All eight threads at 100% usage? How much benefit would that be?

Total processing is roughly:
FX-8350-> 8949
i7-6700K-> 11,007

Oh well, had the FX total processing amount been higher then I was going somewhere with that, but it's lower.

*You'd have to overclock the FX-8350 by about 23% just to match the i7-6700K (again, assuming both can be totally used 100% all threads).
 


I'd like to see an AM4 6C/12T for $200USD (Zen on 14nm).

Also curious what the top 14nm Zen/Polaris APU could do.
 

AreFlame

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In DirectX12 you will be able to use up to 6-cores which will grant you more processing power, but the cores will still be quite a bit weaker compared to intel cpus but it can handle more in games. Also the core usage will be lower of course in directx12, they focused more on the gpu handling the tasks.
 


Partially true.
1) Microsoft did say something about "optimized for up to six cores" or something which was probably due to the fact that the XBOX ONE allowed six cores (at the time) out of the eight physically present for a game.

DX12 can and will use more than six cores if the game coding allows it, and needs it.

2) Lower core usage in DX12?
Sort of true. First, let's remember that there will still be many games that are "DX12" but mainly still DX11 at heart. For games written to properly use DX12 we will see two things:
a) more EFFICIENT code (less CPU cycles to do the same task), and
b) higher number of cores/threads that can be used

*So it's important to understand that there is no definite LIMIT imposed on CPU usage. We may see games that offload physics, AI and other well threaded code to the CPU and use more than EIGHT physical cores even (if present).

Summary:
The bottom line is that DX12 can and will prevent major CPU bottlenecks for existing CPU's that may currently have bottleneck issues.

Whether AMD vs Intel "works better" would come down to specific scenarios. If a particular AMD CPU has more cores than an Intel AND the game can utilize ENOUGH of the AMD CPU's processing power it will run better than on the Intel CPU.

If no CPU bottleneck exists on either computer, and other components are nearly identical then the experience will be the same.