Crossfire with GPU and APU

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Fury__

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I am currently attempting to use my APU on AMD A10 7800 with my RX 480. I thought I changed settings for that to work, but it ended up making me run a somewhat simple game (H1Z1 KOTK) on low settings, with no more than 40 FPS with constant freezing. Do you think this is ALL from the bottleneck?
 
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Say you try low, medium, and high graphics settings and got for example 60fps, 60fps, 50fps
That would tell you that at low and medium settings the CPU is limiting you to 60 fps (or you have Vsync turned on and a 60hz monitor :)) but at the high setting the graphics is becoming the bottleneck.

If however you got something like 90, 80, 70, that would show you that the graphics card is the limiting factor as it's getting worse as you go up.
so no change = CPU, Change = GPU, make sense?
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Dugimodo

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I don't think that's worth doing, and I'm not sure it'll even work. Hybrid crossfire generally only works on a few specific combos of onboard and discrete graphics and they are all pretty low end. I have no Idea if AMD even still do it as I don't think it gained much support. Really it just let you squeeze playable framerates out of low end graphics cards in some situations.

Update: Seems AMD now call this Dual Graphics and recommend an R7 250 to pair with that APU http://www.amd.com/en-us/innovations/software-technologies/dual-graphics
 
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Fury__

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So saying I just use my 480, do you think the bottleneck is causing that much lag? H1Z1 is barely playable.
 
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Dugimodo

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I couldn't say for sure but I suspect the CPU is the reason rather than your graphics card. Easy test, lower the graphics settings as low as they will go and see how it runs, then turn them up a few settings (but not too far). If performance changes then it's the graphics card making the difference, if lowering the settings does nothing then it's the CPU or something else bottlenecking the game.

I don't play H1Z1 though so I have no personal experience with it, you could google it in conjunction with A10 7800 to see how others are doing.
 
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Fury__

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Ok. It's weird, as i had better performance with the APU alone. So if I change settings to high and there's a difference would you say the GPU has a problem or is just being held back by CPU
 
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Dugimodo

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Say you try low, medium, and high graphics settings and got for example 60fps, 60fps, 50fps
That would tell you that at low and medium settings the CPU is limiting you to 60 fps (or you have Vsync turned on and a 60hz monitor :)) but at the high setting the graphics is becoming the bottleneck.

If however you got something like 90, 80, 70, that would show you that the graphics card is the limiting factor as it's getting worse as you go up.
so no change = CPU, Change = GPU, make sense?
 
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