Would a 6700k be worth it over a 4790k if I have to spend $100+ extra?

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ehanger

ehanger

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I'm going to be running some highly threaded programs where performance is critical but am on a tight budget. I've priced out some 4790k/16GB builds in the low $400 range using the stock cooler and $50 motherboards and taking advantage of the $279.99 4790k deal at Microcenter.

Obviously I would feel a bit silly buying "old tech" now that Skylake is out but it appears that I would have to spend an additional $100+ to get a 6700k over a 4790k which means like 20% increase in total cost of the build. The cheapest 1151 boards are about $100 and the 6700k chip itself is $350 at a minimum, which is way more than a Devil's canyon combo.

I just want to get some of your opinions on whether paying the extra $ for a 6700k would be worth it over the 4790k. I only care about multithreaded performance and will not be overclocking due to extra cost of aftermarket cooler/Z97 chipset.

edit: another thing, since I will not be gaming and will be doing nothing other than running 24/7 workloads, I don't consider having more pci-e lanes or usb 3.0 ports a meaningful advantage. All I care about is performance.
 
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Reaper_7799

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If it's a $100 difference right now and you are on a budget, the 4790K is basically the same speed as the 6700K at stock speeds. The 4790K boosts to 4.4 up to two cores and 4 cores at 4.2 Ghz while 6700K only boosts to 4.2 Ghz and 4.0Ghz for all 4 cores, which is enough for them to be pretty equal at stock...the 6700K could still be slightly faster in a few programs but overall performance is about the same.
 
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Maletone

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Looking at some benchmarks, the 6700K gives about a 3% increase in performance vs the 4790K, That may or may not be enough to sway your descion, the only thing I would say is, if you need better onboard graphics, go with the 6700K.
 
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g1abhi

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IF not overclocking then do not go with K processors . Rather get this with xeon. Xeon is basically an i7 without the overclocking.
[PCPartPicker part list](http://pcpartpicker.com/p/vhd4WZ) / [Price breakdown by merchant](http://pcpartpicker.com/p/vhd4WZ/by_merchant/)

Type|Item|Price
:----|:----|:----
**CPU** | [Intel Xeon E3-1231 V3 3.4GHz Quad-Core Processor](http://pcpartpicker.com/part/intel-cpu-bx80646e31231v3) | $242.99 @ SuperBiiz
**Motherboard** | [ASRock H97M PRO4 Micro ATX LGA1150 Motherboard](http://pcpartpicker.com/part/asrock-motherboard-h97mpro4) | $79.89 @ OutletPC
**Memory** | [G.Skill Ripjaws X Series 16GB (2 x 8GB) DDR3-1600 Memory](http://pcpartpicker.com/part/gskill-memory-f312800cl10d16gbxl) | $85.89 @ OutletPC
**Storage** | [OCZ ARC 100 240GB 2.5" Solid State Drive](http://pcpartpicker.com/part/ocz-internal-hard-drive-arc10025sat3240g) | $79.99 @ Newegg
**Storage** | [Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive](http://pcpartpicker.com/part/seagate-internal-hard-drive-st1000dm003) | $47.78 @ OutletPC
**Case** | [Zalman Z3 Plus White ATX Mid Tower Case](http://pcpartpicker.com/part/zalman-case-z3pluswhite) | $74.52 @ Amazon
**Power Supply** | [XFX 550W 80+ Bronze Certified ATX Power Supply](http://pcpartpicker.com/part/xfx-power-supply-p1550sxxb9) | $55.99 @ SuperBiiz
| *Prices include shipping, taxes, rebates, and discounts* |
| Total (before mail-in rebates) | $677.05
| Mail-in rebates | -$10.00
| **Total** | **$667.05**
| Generated by [PCPartPicker](http://pcpartpicker.com) 2015-08-23 15:51 EDT-0400 |

You would need an external graphics card since xeon doesnt have one. Yoo can spend any amount on that as per your wish and requirement
 
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CTurbo

CTurbo

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PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor ($359.99 @ NCIX US)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.99 @ Directron)
Motherboard: MSI Z170 Krait Gaming ATX LGA1151 Motherboard ($144.99 @ Newegg)
Total: $534.97
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-08-23 15:52 EDT-0400

vs

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-5820K 3.3GHz 6-Core Processor ($378.99 @ SuperBiiz)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.99 @ Directron)
Motherboard: ASRock X99 Extreme3 ATX LGA2011-3 Motherboard ($164.99 @ SuperBiiz)
Total: $573.97
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-08-23 15:52 EDT-0400




For just $40 more, the 6 core 5820k would be a better investment
 
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ehanger

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The reason why I want the 4790k even though I'm not overclocking is because of the high stock clocks. The xeon is only at 3.4.

 
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CTurbo

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That Xeon turbos to 3.8ghz but yeah it's 600mhz behind the 4790k across the board. It's WAY cheaper though so it's not a bad option if you were strapped on your budget. You could get the Xeon + H97 motherboard for cheaper than the 4790k costs by itself. Overall it would be almost $200 cheaper by the time you factor in the Z97 motherboard and cpu cooler for the 4790k.
 
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g1abhi

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Well you cant really have everything. actually , the performance difference is http://www.cpu-monkey.com/en/compare_cpu-intel_core_i7_4790k-411-vs-intel_xeon_e3_1231_v3-437
12-18% . Cost difference 50% . Your call. Do remember all i7 heat and their stock cooler is not at all sufficient for cooling them under load, You HAVE TO GET an air cooler with i7, the stock cooler only works for i3,
 
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g1abhi

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I dont see any reason to not get a workstation processor designed for 24x7 loads just because of 12% difference , and pick an i7 designed for few hours of extreme performance( 4.0 ghz stock frequency do not run cool at all , if it did, there would be a 4800k with 4.2ghz stock too. Its the peak limit for 4th gen design threshold and rest is silicone lottery which gives it the OC headroom ) when your work demands 24x7 multicore load .
 
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WhiteSnake91

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although each AMD core is weaker, depends on your program, have you considered the fx 8350? A bit power hungry compared to intel cpu's though. I wouldn't have any problem going with the much cheaper devil's canyon cpu combo...cpu improvements have largely stagnated since sandy bridge in 2011 anyway.
 
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