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Thread: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

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    Supermarket Generic Brand AETAaAS's Avatar
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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    Quote Originally Posted by Xlucine View Post
    Isn't the point of hardware decoding that it doesn't use the power hungry CPU and sticks to dedicated logic, thereby staying nowhere near the TDP?
    This is correct. AFAIK now, all major players have given up on using iGPUs for video decode/encode and are using fixed function hardware alongside the CPU and iGPU. The Intel marketing slides CAT posted illustrates Intel's efficiency gains in using more hardware decode, showing a drop from 5.8W average to 0.8W, which as you point out is nowhere near any TDP limit.

    kompukare makes an interesting point. I didn't think Intel would give different iGPUs to the Pentiums, given they are already at the budget end of the stack but looking at it, the 630 would probably be a welcome upgrade but I am unable to find the number of execution units for 610, whereas the 630 is 24EUs running at up to 1.1GHz or 1.05GHz in the 4600 and 4600T Pentiums respectively. Given the choice, the 630 can be had on the 4600T for 10 pounds more than the 4560T with the 610 iGPU on Scan.
    Last edited by AETAaAS; 14-01-2017 at 06:30 PM.

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    I think what CAT's Intel slide above shows is that Intel have put more functionality into the fixed function decoding block for Kaby Lake - iirc there are multiple steps to decoding content and up to Skylake some of those steps were accelerated and some used the CPU cores. Note the utilisation chart on the Intel slide - the Skylake stays around 70% - 80% CPU utlisation, whilst the Kaby Lake never hits as much as 30%. That must mean more work is being done in the fixed function hardware or on the IGP EUs.

    All of which adds up to a Kaby Lake upgrade looking like it'll solve the issue quite nicely due to the enhanced fixed function decoding hardware taking on more of the 4k decode workload.

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    Hmph?

    Misapplied thermal paste perhaps? Heatsink isn't as hot as I'd expect for reported temps, running @ ~50-55 on idle.


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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    The CPU is at 100% though - have a look in the settings again under filters. I tried an 80MB/S HEVC 8 bit Ultra HD 60FPS clip using MPC and it was running fine on my Xeon E3 1230 V2 and GTX1080 system with HW decoding enabled but everything needed to be enabled manually with the CPU pegged at 10% to 20% or thereabouts. The default Windows 10 media players ran fine out of the box. Will try a 10 bit file too.

    Edit!!

    These are the test files which I am using:

    http://demo-uhd3d.com/fiche.php?cat=uhd&id=143
    http://demo-uhd3d.com/fiche.php?cat=uhd&id=144

    I also have FRAPS running at the same time too.
    Last edited by CAT-THE-FIFTH; 17-01-2017 at 05:13 PM.

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    CAT's right, that CPU is running too much. Just double check which process is actually doing that. If it is the media player, try updating it. Your version seems a little behind. Or try another player like the K-Lite Codec pack or VLC to see if it improves.

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    Quote Originally Posted by AETAaAS View Post
    I am unable to find the number of execution units for 610, whereas the 630 is 24EUs running at up to 1.1GHz or 1.05GHz in the 4600 and 4600T Pentiums respectively. Given the choice, the 630 can be had on the 4600T for 10 pounds more than the 4560T with the 610 iGPU on Scan.
    Probably 12, that's what the 510 had (although the 505 has 18, so it could have been bumped up).

    EU count makes a difference for encoding using quicksync, but does it matter for decoding?

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    Quote Originally Posted by AETAaAS View Post
    CAT's right, that CPU is running too much. Just double check which process is actually doing that. If it is the media player, try updating it. Your version seems a little behind. Or try another player like the K-Lite Codec pack or VLC to see if it improves.
    Was definitely MPC - updated it and CPU usage is down to 2-3% again. Just wondering whether I'd have the same result with the i3.... Can I be bothered to do all that again, potentially twice?

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    Lesson not fully learnt: update all your stuff before you upgrade.

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    Yeah,I had an older version of MPC and it could not hold 60FPS. The latest version was fine.

    For some reason I assumed you had downloaded the latest version before starting the thread. Oh well!!

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    Those temps look much too high for a 65W processor with a 91W cooler

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    Yeah I don't like them much and doubt I'll be testing it out under full load for longer than it takes to unrar a film or two

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    Isn't this the build you did:

    http://forums.hexus.net/chassis-mods...ss-silent.html

    Its probably a combination of the fact its not only a passively cooled case,but you had to modify the heatpipes to fit too. It does not help people have delidded the Skylake and Kaby Lake CPUs and seen big temperatures drops,since Intel switched to TIM between the CPU die and IHS. Even my IB Xeon E3 1230 V2 in a SFF system with an AIO water cooler is not very cool running under load,and neither was the earlier SB based Xeon E3 1220 I had in a smaller case with limited ventilation(and an active cooler). It could easily hit 70C under heavy load and those CPUs had solder.
    Last edited by CAT-THE-FIFTH; 18-01-2017 at 08:23 PM.

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    try using http://madvr.com/ - hardware accelerated directshow filter

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    The CPU is quite happily running without throttling and turbo boost has even kicked in (to what is likely it's maximum value, #600 has generally been just 100Mhz turbo under a four core load).

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    Does anyone know if current generation CPU can handle MadVR on a demanding setting?

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    Re: i3 6300 bottlenecking on 4k playback - upgrade to kaby lake i5?

    madVR take the load off the CPU and puts it on the GPU, the only way to know it to try it

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