Dual X5660 (HP Z800) vs i7 5820k (will be overclocked) for video rendering

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.
 

Eximo

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Tricky. Depends on your software specifically.

X5660 are 1st Gen 6 core processors, a pair of them would get you 12 cores and 24 threads. If your software is multi-threaded then this would kick the crap out of the 4 core 8 thread 4790k and the 5820k only has 6 cores 12 threads. However, you are looking at triple channel DDR3, likely ECC, vs Quad channel DDR4 non-ECC.

Now you can overclock the i7s, so each thread might make up quite the difference.

Really depends on how much data bandwidth your renders use whether the ram will make a big difference and how it uses the CPUs to render. The newer i7s have newer instruction sets like AVX2 which might make an enormous difference.

At work we have workstations with dual sockets and Ivy-Bridge E processors. 8-core at 3.9GHz (basically i7-4960X, but Xeons) and some 12 Core 2.8Ghz processors. Very pricey, but just laying out the options. If you use this rendering to make a profit, then the faster you can do it might be invaluable to you.