Is it worth bying a 4790K or do I HAVE to go for a 7700K

bigpha

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Mar 5, 2017
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First sorry for my english

Hello, I am a developper and I am in unity 3d for now 3 months, I am starting to use blender for modeling.

I actualy have a i5 4460 and a gtx 1070.

On blender I am rendering with my GPU, the problem is that when I am watching tutorials on youtube during a rendering youtube just freeze, I think this is coming from my CPU that s why I about to change it.

I was first thinking about a i7 7700k then after googling I came to the conclusion that for my usage of blender I should render with my gpu (I am a game dev not a 3d artist so I will spend 99% of time modeling and not making very complexe and high rez scene requiring a lot of memory, so the memory of my 1070 should always be enough).

Because of the point above and because my motherboard's socket is 1050 I was thinking on going for a i7 4790k instead of a i7 7700k, I would have to change my motherboard and my ram if I go for the i7 7700k and that is too much if the conclusion I made about my blender usage are good.

Is the 4790k too old now ? Is it a bad idea to buy it after all this time?

Thank you
 
I'd run task manager, then watch CPU usage under the 'performance' tab to make sure this is due to the CPU being overloaded. Also, you can raise the priority of your browser process in task manager/details so it gets the CPU cycles it needs to watch Youtube. This is in Windows 10 but I'm sure you can do the same in other versions of Windows. You might be able to solve this without spending money.
 


Actully since I am rendering with my gpu my cpu usage isnt going more than 50 percent during rendering.
Also its not freezing all times but sometimes when I render, the youtube video is loading very slowly and sometimes pause itself cuz of a slow loading time as if my internet connection was bad, wich is not the case since I have 350mega and it only happend while rendering.

About my GPU, during render: it is going up to 1961Mhz and 65 degree (celcius), I have a zotac 1070 amp extreme witch should run at 1835 MHz on boost, could it be the problem? In Firestorm I didnt't change the gpu clock boost neither the GPU Max Voltage, neither the memory clock neither the power neither the display clock, I basicaly didnt overclock it.

Now sometime chrome also freeze while I am not rendering, and when I go quckly in the task manager I can see that the cpu usage is quickly dropping as if It reached a very high usage during the freeze, after that the youtube page I was in just refresh and the video player is green and I need to refresh it manualy this time to watch the video.

Kinda boring I have no clue on what is happening honestly ... Not enough power ? Got a 550watt power block for a 1070 an i5 4460 with default cooling, 24 Gb ddr3 ram a b75 (edit: ASUS B85-PRO GAMER) asus mother board 1 ssd 1 hdd, and that is it.
 
personally I would not upgrade to 7770k, 4790K can be had for cheap (seen them for 199.99) and it is (1) very good upgrade over the 4460 you have, and (2) only 8-10% slower than a 7770k... but up to you it is your budget.

one question you have 24GB of ram, which seems like a odd number of ram to have, considering only 2 ram stick in your motherboard. so you matched a 16gb with an 8gb ram stick., which is not optimal at all , you may reconsider your cpu purchase and get a proper PAIRed 32GB (2x16gb) or try to match you 1x 16gb ram with a new identical model, this would set your PC in dual mode ram and that would speed things up on your system .

those are my recommendations
 



Hi and thank's for the answer.
First my bad I have a ASUS B85-PRO GAMER so I have 4 ram slots howerver this is still the same problem I have 2*8 + 2*4 ram sticks of diffrent speed so I can still apply what you said.

So you think the fact my computer is a bit unstable could come from this?

Also about the cpu I think I will definitly go for a 4790k if I can find one around the price tag you said, but I am in France and they are still arround 400 euro here as new
 



Well the maximum speed that my motherboard allow for my ram is 1600 Mhz, witch is already what I have but since it is not recomended to mix ram I just removed the 2*4gb sticks and let the 2*8gb, anyway 16gb should be enough for the moment. So I'll run one or two days like that and if my system is more stable I will mark your answer as the one that solved my problem