i7 4790k vs i7 5820k? It's for my next build.

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TheMightyChuckaboo

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Apr 11, 2014
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Hi guys/gals, as the title shows I would like to know the performance differences between the two CPUs in terms of editing potential. I know they will cope fine when it comes to gaming but was unsure on their editing performance/potential (in terms of editing, my primary use would be for rendering 5 - 10 min videos @ 1080p through sony vegas pro 13). I know that the 5820k has an extra two cores and will function a little bit better when it comes to editing/multitasking. But I don't know the exact difference? I would aim to OC either of the CPUs. But again, if I were to purchase a 5820k I would obviously have to invest in the X99 chipset as well as DDR4 memory... Would you say the difference in price would be worth it for the performance I will achieve with the 5820k and for the tasks I aim to do with it? Or am I better of sticking with the 4790k Z97 chipset? All my research time has been invested in the 4790k build but have recently stumbled upon X99.. And now I am stumped... Any input is appreciated thanks :)
 
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davidarad02
with the 5820k your get 2 more cores, and 4 more virtual cores, as well as more cache, faster memory support, and overall better platform. if you have the cash to spend, x99 is better. just remember, if you plan to build an entire new system, you might be better of getting a 4790k and a better GPU. just think about it.
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davidarad02

davidarad02

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with the 5820k your get 2 more cores, and 4 more virtual cores, as well as more cache, faster memory support, and overall better platform. if you have the cash to spend, x99 is better. just remember, if you plan to build an entire new system, you might be better of getting a 4790k and a better GPU. just think about it.
 
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TheMightyChuckaboo

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I would use some components from my old build (PSU and HDD) if I were to go for the X99 build. RAM,PSU,HDD if I were to go with z97. I would spend about £910 on the z97 build or £1200 on the X99 build. I'm currently upgrading from an M-ATX build.

 
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davidarad02

davidarad02

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as i said, if you have the cash to spend, x99 is much more powerful. you said you want to render 1080p at 5-10 mins. with z97 you might be able to hit that mark, but with x99 you will probably pass that.
 
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Karsten75

Karsten75

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Many questions can best be answered by Google. :) Especially if we're looking for comparative benchmarks.

Here is an article comparing performance of high-end processors in rendering. Note that the two processors under comparison do not heave a really large gap in performance, so the buyer will have to decide if that %age improvement is worth the additional cost in the entire system (memory and motherboard as well). It may be possible to achieve substantial improvements in the mainstream i7-3790K's performance by using a separate SSD or RAMDISK as a staging drive for the rendering program to use. I/O delay is a substantial component of the workflow.

Anyway, on to the picture:

 
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TheMightyChuckaboo

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Here is an attempt at my X99 build. I may have gone overboard on the RAM...


CPU: i7 5820k (£320.46)
MoBo: MSI X99S Gaming 7 (£212.47)
GPU: MSI GTX 970 Gaming 4G (279.99)
PSU: Corsair TX 650 (From previous build)
RAM: G.Skill Ripjaw 4 @ 3000 MHz (£234.68)
HDD: 2 x 2TB HDD (From previous build)
Cooler: Corsair H110i GT (£105.93)
Case: Phanteks Enthoo Luxe (£112.99)

---------------------------------------------
TOTAL: £1266.52
---------------------------------------------

It would also be nice to know what kind of overclocks I could achieve from this build? Do you think I would be able to push for 4.4 on the CPU? I wouldn't be too bothered with the RAM.
 
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DubbleClick

DubbleClick

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Yeah about 4.4 to 4.6ghz. About 4.7 to 4.9ghz on an I7 4790k build, so percentage wise you'll have the 5820k overclock better. As for their performance, you should check the benchmark karsten provided, but also google others. That is, with the same amount of ram.

After all, you're probably looking at a £350+ extra for ~15-20% performance difference.
 
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TheMightyChuckaboo

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I have started to lean towards the 5820k X99 build. I was however, worried about the motherboard I am getting (MSI X99S Gaming 7)? As it is a relatively new chipset there will be issues that need ironing out (as with all other previous chipsets). But I wasn't sure if there are any 'bugs' currently known on this board as of right now. As the thought of updating a BIOS (which I have never done before) scares the crap outta me... :S Thanks :)
 
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DubbleClick

DubbleClick

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That's a bullet you must bite, but I wouldn't worry too much about that.
To sum it up:

[PCPartPicker part list](http://uk.pcpartpicker.com/p/mRKK23) / [Price breakdown by merchant](http://uk.pcpartpicker.com/p/mRKK23/by_merchant/)

Type|Item|Price
:----|:----|:----
**CPU** | [Intel Core i7-4790K 4.0GHz Quad-Core Processor](http://uk.pcpartpicker.com/part/intel-cpu-bx80646i74790k) | £267.54 @ Aria PC
**CPU Cooler** | [Noctua NH-D15 82.5 CFM CPU Cooler](http://uk.pcpartpicker.com/part/noctua-cpu-cooler-nhd15) | £65.46 @ CCL Computers
**Motherboard** | [Gigabyte GA-Z97X-SLI ATX LGA1150 Motherboard](http://uk.pcpartpicker.com/part/gigabyte-motherboard-gaz97xsli) | £89.99 @ Novatech
| *Prices include shipping, taxes, rebates, and discounts* |
| **Total** | **£422.99**
| Generated by [PCPartPicker](http://pcpartpicker.com) 2015-03-17 17:22 GMT+0000 |

vs.

[PCPartPicker part list](http://uk.pcpartpicker.com/p/bCf3WZ) / [Price breakdown by merchant](http://uk.pcpartpicker.com/p/bCf3WZ/by_merchant/)

Type|Item|Price
:----|:----|:----
**CPU** | [Intel Core i7-5820K 3.3GHz 6-Core Processor](http://uk.pcpartpicker.com/part/intel-cpu-bx80648i75820k) | £289.98 @ Aria PC
**CPU Cooler** | [Noctua NH-D15 82.5 CFM CPU Cooler](http://uk.pcpartpicker.com/part/noctua-cpu-cooler-nhd15) | £65.46 @ CCL Computers
**Motherboard** | [MSI X99S Gaming 7 ATX LGA2011-3 Motherboard](http://uk.pcpartpicker.com/part/msi-motherboard-x99sgaming7) | £196.79 @ Scan.co.uk
**Memory** | [G.Skill Ripjaws Series 16GB (4 x 4GB) DDR4-3000 Memory](http://uk.pcpartpicker.com/part/gskill-memory-f43000c15q16grr) | £239.99 @ Novatech
| *Prices include shipping, taxes, rebates, and discounts* |
| **Total** | **£792.22**
| Generated by [PCPartPicker](http://pcpartpicker.com) 2015-03-17 17:25 GMT+0000 |
 
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TheMightyChuckaboo

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Apr 11, 2014
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I had recently prepared a build on the X99 chipset should I choose to go for it.

CPU: i7 5820k ---- (£320.46) (plan to OC eventually)
MoBo: MSI X99S Gaming 7 (£212.47)
GPU: MSI GTX 970 Gaming 4G (279.99) (also hope to OC)
PSU: Corsair TX 650 (Previous build)
RAM: G.Skill Ripjaw 4 @ 2666 MHz (£205.68)
HDD: 2 x 2TB HDD (Previous build)
Cooler: Corsair H110i GT (£105.93)
Case: Phanteks Enthoo Luxe (£112.99)

TOTAL: £1237.52

OR:

CPU: i7 4790k (£268.98)
MoBo: MSI Z97 gaming 7 (£129.98)
GPU: MSI GTX 970 Gaming 4G (279.99)
PSU: Corsair TX 650 (previous build)
RAM: G.Skill Ripjaw @ 1600 MHz (previous build)
HDD: 2 x 2TB HDD (previous build)
Cooler: Corsair H110i GT (£105.93)
Case: Phanteks Enthoo Luxe (£112.99)

TOTAL: £897.87
 
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DubbleClick

DubbleClick

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I'd recommend to get the noctua nh-d15 if your case is big enough. Cooling capabilities are about equal, but the noctua is cheaper, quieter (less than half the noise of a h100i) and has no chance of leaking. As for the motherboard on the z97 board, you might actually save a bit of money. The asrock z97 extreme4 does really yield everything the msi gaming 7 does. Aside of that, both builds seem fine. Which one you go for is really up to you, on stock speeds the i7 4790k is within 5% performance of the i7 5820k, in single threaded applications the i7 4790k is the clear winner. For heavy usage, both under an overclock you'd probably end up with 4.4ghz on the 5820k and 4.8ghz on the 4790k, resulting in 9% performance advantage of the i7 4790k in <5 threaded applications and a 35% advantage of the i7 5820k in applications that efficiently share workload across 6 to 12 threads.
 
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