Dual X5660 (HP Z800) vs i7 5820k (overclocked) for video editing/rendering

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Michael_149

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Dec 23, 2015
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Hi guys,
Long time reader first time poster here!
I'm at a crossroads. I'm not too concerned about the cost, just performance wise want to know what is the best. I can get an HP Z800 with dual x5660's for $550, or I can do a custom build with the new i7 5820k. I would have around 32gb ram in both systems (not sure what speeds would be, as high as possible for both most likely).
My question is how much of a noticeable difference will the ddr4 give over the ddr3 in general, and which system will perform better overall for 4k editing.

I will be using one of the new Nvidia pascal gpu's when they come out or a gtx 680ti, with a Firepro v7900 as the display card (for the 10 bit color output).

I noticed the dual x5660's perform better in cinebench than a 4790k, and a 4790k performs better in cinebench than the 5820k.

All very confusing. cannot find a direct fair comparism.

Also note, that with the 5820k build I will be using a Samsung 950 pro m.2 ssd.


Will the overclocking, ddr4, and Samsung 950 pro massive performance let the 5820k trump the dual xeons?
Even if it does not beat out the xeons, is it still a better investment for future proofing my hardware in a way?

I feel like this might be an absolutely stupid question! Sorry if it is, I don't know an the ins and outs about comparing the hardware side of things.

Sorry if this was a little hard to follow, mind is all over the place right now.
 
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Calculagator

Calculagator

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Nov 18, 2014
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It's not a stupid question, but it is difficult to answer. There is no "fair" comparison.
The Xeons are older, but with two of them, you get 12 physical cores plus hyperthreading. That's double what you get with the 5820k. On the other hand, all of those cores are slower and having 2 CPUs is less efficient so it will perform significantly worse on tasks that can't take advantage of all of the cores.

You cannot beat the Z800 on its price to performance ratio. If you go with that, you can always upgrade later and keep the z800 around to use as a render farm for CPU intensive workloads. I think it is wiser to get the cheap option now to get your feet wet and get a feel for what hardware you actually use.
 
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Michael_149

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Dec 23, 2015
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Hey, thanks for the reply, do you think the ram and m.2 ssd speed would make a huge difference in performance? I am editing 4k footage with it. My concern with the Z800 is that while the CPU's may perform the same or better for much cheaper, it only has sata 3.0 gb/s and only supports ram speeds of 1333 in ddr3.

Is this much of a deciding factor or can I get by doing 4k in real time with this? I hear the higher ram speeds with ddr4 and bandwidth help a lot with the realtime 4k editing.
Thanks for all the help.

 
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Calculagator

Calculagator

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You can always use a PCI-E adapter if you need faster storage with th z800.
The RAM will definitely be slower, just how much that will matter will depend on what you are doing. I would guess that if everything else were equal, the slower RAM could lower performance by up to 20%. For many things it won't matter. It may be very important for your workflow, however.
 
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