Modern Budget-minded 1080p video editing platform.

[Quaxel]

Okay gents, hoping for some help. I know just enough about computer hardware to get by and my old PC that was once a powerhouse is old and outdated...
-looking to edit 1080p videos. will need to interpolate 60-120fps videos down to 1/4th original speed or so.
-have a tight budget but willing to rebuild/upgrade current rig
-will be using mostly Premiere and After Effects and running windows 10 pro.
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I am running an old HP Pavilion model: GC674AA-ABA m8120n
all hardware is 7+ years old with the exception of the graphics card which i purchased and installed just months ago.
Current hardware
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-Graphics card: https://www.amazon.com/gp/product/B00L5GZG5C/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

the rest of the specs and parts here on Hp's website:
http://support.hp.com/us-en/document/c01070924
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I imagine i'll need a new motherboard that will support a faster processor, a new processor, perhaps a fan or two and maybe a more powerful graphics card. looking to get this done for 300ish dollars if possible but I'm open to ideas.
any help is MUCH appreciated. Happy Holidays!

 

[Multipack]

With your budget and needs I'd focus on an integrated graphics system without a discrete card for now, as the GPU is largely irrelevant for rendering video anyway, although you would miss out on hardware acceleration. Am not sure an entirely new system is viable for $300 though, which is really what you need for editing with software like Adobe.

 

[Quaxel]

Really? I figure if i keep tower and just need a motherboard and processor, and possibly a video card that $300 would cut it. i can spend much more, but every dollar\ I spend on video editing is a dollar less I can spend racing, which is where the footage to be edited comes from.
I could have been more clear though, the $300 dollars was really only the goal assuming I could rebuild/upgrade current computer. I wouldn't dream any kind of full build for $300 would meet my (modest) demands for performance.
any wisdom onto how much processing power I'd want? I have read a lot about video editing rigs but I assumed interpolating would require a better/more powerful setup.

 

[Multipack]

Well I guess it depends what kind of performance you'd like! I don't mean to be a buzz killer! If you are talking realistic rendering times, with fairly responsive editing etc, then at least a 4th gen Intel CPU would be required, but that wouldn't be a ton cheaper than say an i3 6100 which is still considered an entry level chip. Video editing is basically as demanding on a system as gaming, and even if you kept the same GPU you would have a fairly modest build with the budget. The only other thing you could keep from that build would be the case, and even that may be difficult as the problem with proprietary cases like the one you have is often that they are modified and not universally compatible with standard hardware. A new case would only cost $30 or so anyway, but when you consider a new board, CPU, PSU and RAM it may be a stretch within your proposed budget. Say the case was compatible with a standard ATX board and PSU, you'd probably still be looking at needing to spend a littlemore than that to have have a build capable of running Adobe software smoothly and rendering video at a speed that most people would consider acceptable. It really does depend on your expectations, and if you are willing to wait hours on end to encode videos of a reasonable size.

Perhaps without a new case, GPU or storage it could be semi-achievabl with something along these lines..

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i3-6100 3.7GHz Dual-Core Processor ($109.99 @ SuperBiiz)
Motherboard: Gigabyte GA-H110M-A Micro ATX LGA1151 Motherboard ($53.88 @ OutletPC)
Memory: Corsair Vengeance LPX 8GB (2 x 4GB) DDR4-2133 Memory ($50.98 @ Newegg)
Power Supply: SeaSonic 450W 80+ Gold Certified ATX Power Supply ($59.99 @ SuperBiiz)
Total: $274.84
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-12-14 17:46 EST-0500

 

[Quaxel]

Video processing/encoding time is not a concern, I don't edit for a living and don't have any deadlines to meet. As long as final product looks good. don't care if I have to leave the computer on all night rendering videos. thank YOU for all the info, you are not a buzzkill at all and have been VERY informative. I think I'm going to skip the new power supply form now as i have a 500w right now that should work fine. I'll put the extra $60ish towards a better processor and if I end up needing a power supply with more cables and such I can always order one. Thank you again!