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Upgrading I5 2500K for streaming+gaming

post #1 of 64
Thread Starter 
Hey there,
I'm looking forward to upgrade my CPU in order to improve my stream quality and performance in global,currently streaming while playing high end games is the task.
Sadly my upload isn't solid in my country (max 3mbit) so i'd like to improve my gear.
here's my current PC spec for the topic:

I5 2500K OC'd to 4.3Ghz with Scythe Mugen 2 cooling

Gigabyte GA-Z68X-UD3P-B3 for 1155

Seasonic SS-750AT 750W Active PFC 4X PCI-E 62A/12V Single Rail

16gb RAM

GPU 970GTX

So my question is, what's the current upgrade you guys would suggest me to go for?
Budget is limited and i'm looking for something that will provide something that the 2500K did for 5years .
and for the off-topic,do you think i can pull out more of the OC on the 2500K with my current cooling?smile.gif

Thanks in advance !
Edited by zvi8875 - 9/30/15 at 7:08am
post #2 of 64
I don't really think improving gear will help with streaming. If you want a dirt cheap upgrade, find yourself a 2600K used. That will provide your a much more bang for your buck upgrade then moving to a new platform.
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Kylo RED
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post #3 of 64
Thread Starter 
So basically just from moving from I5 to I7 will make me feel the difference encoding video code such as streaming?
post #4 of 64
with 3mbps upload, you won't be streaming at much more than 720p60fps or 1080p30fps anyway. For that, the 2600k should be enough, though maybe the 2500k is fine too. Not sure either way actually! Just try at 2600kbps video bandwidth and see how the quality (and cpu load) is with either 720p60 or 1080p30
Edited by Tivan - 9/30/15 at 8:47am
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post #5 of 64
Thread Starter 
Thinking about pushing my OC more than 4.3Ghz , it can do any big difference there anyway? or since I7 technology is better for encoding and video processing
do you know how far i can go with my current gear with the current cooling ? can i push it to the 4.5?
post #6 of 64
There are two things will help improve your stream quality, and neither of them involve a PC upgrade IMHO. If you are using an X264 encoder, switch to shadowplay or intel quicksync . This will make your stream much smoother, compared to CPU encoding. Intel quicksync will improve your stream quality with no performance hit. The second thing, and really the most important thing, would be to increase your upload speed. This obviously is highly dependent on what is available to you locally from your ISP.

Really at the moment your upload speed is more of a bottleneck than your PC is.
post #7 of 64
Quote:
Originally Posted by zvi8875 View Post

Thinking about pushing my OC more than 4.3Ghz , it can do any big difference there anyway? or since I7 technology is better for encoding and video processing
do you know how far i can go with my current gear with the current cooling ? can i push it to the 4.5?

The hyperthreading from the 2600k would give you like a 20% higher maximum performance for encoding, might impact game FPS a bit more though.

Of course you need to adjust your settings to tap into that performance, unless your settings right now are too high for your cpu to handle.

As for quicksync/shadowplay, they don't improve smoothness unless you have set your settings too high for your cpu to handle. Aside from that they're a bit less bandwith efficient than x264 cpu preset veryfast.

Just set your cpu encode settings/fps/resolution in a way that your cpu is at 80% load max so you know how far you can go with cpu encode (stay with x264 preset veryfast, which is the default, lighter or heavier settings both see diminishing returns, though if you run a 6 core they're kinda interesting too.)

If your cpu is doing fine encoding 720p60fps (or 1080p30fps if you want that), then I'd call it a day. Especially since you wont get much more with your upload speed. 2600k if you need a little more performance. (If the video blurs too much in motion due to bandwidth, you could also shoot for 720p48fps or 864p30fps. 48fps is quite a bit more nice than 45fps. A stable 720p30fps stream is cool too, I watch a guy with those settings almost daily and it's solid. Just get a feel for your CPU performance and you'll be able to make a call on where to go I think!)

As for overclocking, every 100mhz more is ~2.3% more performance. That doesn't sound like that much and it really isn't. Faster Ram might help a bit too, if you're running some really slow Ram right now. But not much either.
Edited by Tivan - 9/30/15 at 9:30am
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post #8 of 64
Quote:
Originally Posted by Mattb2e View Post

There are two things will help improve your stream quality, and neither of them involve a PC upgrade IMHO. If you are using an X264 encoder, switch to shadowplay or intel quicksync . This will make your stream much smoother, compared to CPU encoding. Intel quicksync will improve your stream quality with no performance hit. The second thing, and really the most important thing, would be to increase your upload speed. This obviously is highly dependent on what is available to you locally from your ISP.

Really at the moment your upload speed is more of a bottleneck than your PC is.

Obv x264 > quicksync/NVENC (shadowplay) in terms of image quality. You need a beefy bitrate to match x264's image quality, in my experience quicksync/nvenc just looks awful at 1-2Mbps.
post #9 of 64
Quote:
Originally Posted by zvi8875 View Post

So basically just from moving from I5 to I7 will make me feel the difference encoding video code such as streaming?
Quote:
There are two things will help improve your stream quality, and neither of them involve a PC upgrade IMHO. If you are using an X264 encoder, switch to shadowplay or intel quicksync . This will make your stream much smoother, compared to CPU encoding. Intel quicksync will improve your stream quality with no performance hit

x264 quality is far, far superior to quicksync and NVENC. If you don't want to use x264, use NVENC unless you don't have it. NVENC is the performance king in terms of game FPS - it impacts the game the least by capturing but the output quality at the same bitrate is quite a lot worse than x264.

Performance gain for encoding i5 to i7 is ~20%.

It's important to note that encoding performance gain doesn't mean FPS gain in your game. A lot of the FPS hit from running a program to stream+encode comes from the processes to do with capturing the frames from the game and are not sped up by hyperthreading.

The IPC gain from sandy bridge to skylake for x264 is ~35-38%, so an upgrade to a 4.6ghz 6700k is an extra ~75% performance for encoding. You can get a bit of that from clocking the 2500k higher if you can do it, it depends on the chip.
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post #10 of 64
Quote:
Originally Posted by Faithh View Post

Obv x264 > quicksync/NVENC (shadowplay) in terms of image quality. You need a beefy bitrate to match x264's image quality, in my experience quicksync/nvenc just looks awful at 1-2Mbps.

When I read this thread I was assuming "stream quality" was related to frame rates, more specifically minimum frame rates. Using CPU encoding while playing a high end game you will have a lower framerate, and more dips in frame rates, and that's what my answer was mostly relating to. It didn't occur to me that the OP could have been talking about image quality, which is something completely different. If he is looking for better IQ, an upgrade would be necessary, especially if he will not be upgrading his internet connection.

Personally I cannot use x264 on my PC for the game I play most, mainly do to an antiquated engine. I use quicksync because in Guild Wars 2 WvW (massive maps with lots of players) if you use CPU encoding, the CPU is so taxed already, even with an I7 you dip into the single digits and if your lucky the high teens. With an alternate encoder, you have a playable game, and a decent stream.

I use local recording now, at 50Mbps with quicksync at 1080P60Fps and it looks pretty decent. If I could compare that with X264 I would, but in that game I cannot.
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