i7-5820K Haswell-E 6-Core 3.3GHz or Xeon E5-2670 2.60GHz 8 Core?

Norton72 · Sep 3, 2015

I'm building a new workstation with these components (updated from a previous thread):

ASUS X99-M-WS
Intel Core i7-5820K Haswell-E 6-Core 3.3GHz
2x Samsung 850 EVO 250GB SSD (Two of them because it's a dual boot system, one for my home recording studio, and hence the attempt to build a silent system.)
CORSAIR Dominator Platinum 32GB (4 x 8GB) DDR4 2800
Something along the lines of a MSI GeForce GTX 970 GTX 970
Seagate Hybrid Drive 2TB HDD
be quiet! SILENT BASE 800 WINDOW
and maybe a be quiet! DARK POWER PRO 11 850W ATX 12V 80 Plus Platinum Modular Power Supply Silentwings 3 Fan (Might be overkill, and too much money.)

I already have the case, mobo and RAM. I have mounted these components into the case to determine how much clearance I have for CPU cooling. (Looks like I may have to go with water cooling.) I've been looking at my wish list to see what I need to order next. While looking at my CPU choice, I noticed that the refurbished Xeon E5-2670 2.60GHz 8 Core is available for just a few dollars more.

My question is, should take a chance on a refurbished 8-core processor with a 30-day warranty, or stick with the new 6-core with a 3-year warranty? Bear in mind also that it will most likely take more than 30 days to accumulate all of the components and assemble them, by which time the warranty will have already expired. But man! 8-cores would be awesome. I do some 3D modeling and rendering, but have decided to go with a gaming GPU rather that a workstation card because I'm going to get a lot more use out of the features of a gaming card. My infrequent modeling and rendering would not justify a workstation card I think.

I'd like to go ahead and get the refurbished CPU while it's available, if it's the right thing to do. That's where y'all come in. I need your expert opinions.

Thanks!

JackNaylorPE · Sep 3, 2015

They are not compatible

X99 is socket LGA 2011 V3
4790k is socket 1150
DDr3 won't mount in that board

Ya really have to check application performance with each processor....you will oft see X99 and Quadro recommended for CAD workstations but the fact is AutoCAD 2D and 3D both do quite a bit better with GTX cards.

If gaming is the priority, Z97 / 4690k (and now Z170 / 6700k) edges X99 / 5820k. For a gaming box, I wouldn't recommend X99 unless you thinking 3 or more GFX cards and 5820k

If you use anadtech's CPU bench to compare processors, you'd be surprised at the results .... the Xeon 1251s for example do quite well in gaming at stock but if overclocking they no longer make sense. And many apps commonly thought of as workstation territory actually do better on Z97.

turkey3_scratch · Sep 3, 2015

in the title you say I7-5820K, but in the post you say 4790K. Which one is it? Anyway, a 5820K is actually a great balance for both workstation (with 6 cores 12 threads) and gaming (high frequency than the Xeon).

Also, according to Intel's website for the Xeon http://ark.intel.com/products/64595/Intel-Xeon-Processor-E5-2670-20M-Cache-2_60-GHz-8_00-GTs-Intel-QPI it's socket 2011 I think, not 2011 V3 (please correct me if wrong).

PJ5ingh · Sep 3, 2015

I just got done building a PC that has a 5820K. I love it. I am using Rampage V Extreme as my motherboard. Got to love the UEFI. Running WIN10 on it and after updating latest BIOS, it works like a Glove.

JackNaylorPE · Sep 3, 2015

http://www.newegg.com/Product/Product.aspx?Item=N82E16813132584

MoBo is LGA 2011 V3

emeck · Sep 3, 2015

turkey3_scratch :

Yes this is correct.

Norton72 · Sep 3, 2015

turkey3_scratch :

I apologize, it's the Intel Core i7-5820K Haswell-E 6-Core 3.3GHz, I copied the wrong stuff. Thanks for the heads up.

Norton72 · Sep 3, 2015

I guess I got a little hasty. I didn't realize that the Xeon was not compatible with the 2011-v3. I guess that puts that to rest.

JackNaylorPE · Sep 3, 2015

The 5820k doesn't quite perform as well in gaming the with 1 or 2 GFX cards as the 4790k, the 4790k wins more than it loses .... the 6700k widens the distance. If thinking 3 cards, maybe 4, the 40 lane 5930k would be my choice.

turkey3_scratch · Sep 3, 2015

That Xeon is from Q1 2012, when LGA 2011 was the thing. Now LGA 2011 V3 is the thing, and I'm not sire if they're backwards compatible. But I'd go with a 5820K anyway for sure. It'll certainly perform better with the much higher frequency for only 4 less threads - 12 to 16.

If he OC the 5820K he can get equal single core performance to the 4790K, or better.

Norton72 · Sep 3, 2015

JackNaylorPE :

Dang it, I copied the list from my old thread and thought I update everything. I've updated my OP to reflect the correct CPU and RAM. The RAM I have is the CORSAIR Dominator Platinum 32GB (4 x 8GB) DDR4 2800. Again, I apologize for all the confusion. Thanks for your patience.

Norton72 · Sep 3, 2015

So, what are your thoughts on the PSU I've listed? Do you think it's too much? Using the power supply calculator I figure I need 850W, and I love my be quiet! case. I was hoping their PSU would have the same build quality.

turkey3_scratch · Sep 3, 2015

With a GTX 970 a 500W PSU would do. I recommend you go in the 600W-650W range though, and get a different power supply than that Be Quiet! one. An EVGA G2 or B2 power supply is great, pretty much any Seasonic is good, Superflower, XFX is also good.

Norton72 · Sep 3, 2015

I have an EVGA 750W in the computer I have now, and I like it very much. But on the PSU calculator, I factored in a water cooling system and, along with my other components I think it recommended something in the neighborhood of 850W, more or less.

So... I just went back and checked. It is recommending 650W, as you said. I didn't factor in OC'ing. I've never done it, but I do expect to in the future. I have no idea what figures to plug in though. Right now I'm only playing Skyrim, which I don't think is very demanding, (I could be wrong, I've only played about 5 hours.) I expect that as time goes on, I'll expand my gaming horizons.

Updated: I didn't select my CPU, so I recalculated. It says 490W, but recommends 850VA UPS rating. What's that mean?

turkey3_scratch · Sep 3, 2015

EVGA 750W G2 would be a wise investment. 10 year warranty also.

JackNaylorPE · Sep 3, 2015

Z97 CPUs OC's are 135 watts .... add 100 watts for X99

980 Tis vary a lot on power draw,... G1 can pull 360 watts

PSU req'ts for nVidia cards are all listed here:

http://www.tomshardware.com/answers/id-2311121/power-supply-requirements-nvidia-gpus.html#14243229

http://www.guru3d.com/articles_pages/nvidia_geforce_gtx_980_ti_review,8.html

Subjective obtained GPU power consumption = ~ 250 Watts

Here is Guru3D's power supply recommendation:

GeForce GTX 980 Ti - On your average system the card requires you to have a 600 Watts power supply unit.
GeForce GTX 980 Ti SLI - On your average system the cards require you to have a 900 Watts power supply unit as minimum.

If you are going to overclock your GPU or processor, then we do recommend you purchase something with some more stamina.

With 850's being a little tight, I use 1050s on overclocked, water cooled SLI Builds

Norton72 · Sep 3, 2015

JackNaylorPE :

Great answer Jack, thanks. I don't really anticipating running SLI but, never say never. I know there is no such thing as future-proof, but I have just only this year replaced my P4 machine that I built in 2003. I'd like to see the new get that kind of longevity. My current computer is a hand-me-down from work that I've tweaked a bit. I'll be handing it down to my son after the new build.

i7-5820K Haswell-E 6-Core 3.3GHz or Xeon E5-2670 2.60GHz 8 Core?

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