CPUBoss Review Our evaluation of 5930K vs 3930K among desktop CPUs (over 75W)


Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more


Are you paying a premium for performance?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more


CPUBoss Score

Combination of all six facets

Intel Core i7 5930K 

CPUBoss recommends the Intel Core i7 5930K  based on its .

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Differences What are the advantages of each

Front view of Intel Core i7 5930K

Reasons to consider the
Intel Core i7 5930K

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CPUBoss is not aware of any important advantages of the 5930K vs the 3930K.

Front view of Intel Core i7 3930K

Reasons to consider the
Intel Core i7 3930K

Report a correction

CPUBoss is not aware of any important advantages of the 3930K vs the 5930K.

Benchmarks Real world tests of Core i7 5930K vs 3930K

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 5930K
4,300,000 MB/s
Core i7 3930K
2,430,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs


PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs


Core i7 5930K  vs
Clock speed 3.5 GHz 3.2 GHz
Turbo clock speed 3.7 GHz 3.8 GHz
Cores Hexa core Hexa core
Is unlocked Yes Yes


Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
Supplemental SSE3
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 140W 130W
Annual home energy cost 33.73 $/year 56.96 $/year
Annual commercial energy cost 122.64 $/year 177.83 $/year
Performance per watt 11.41 pt/W 5.51 pt/W
Typical power consumption 113.75W 172.6W


Architecture QPI DMI 2.0
Number of links 0 1
Transfer rate 0 MT/s 5,000 MT/s


Core i7 5930K  vs
Architecture x86-64 x86-64
Threads 12 12
L3 cache 15 MB 12 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 1


Overclocked clock speed 4.78 GHz 4.67 GHz
Overclocked clock speed (Water) 4.45 GHz 4.69 GHz
PassMark (Overclocked) 7,634.4 6,119.5
Overclocked clock speed (Air) 4.78 GHz 4.67 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

memory controller

Memory controller Built-in Built-in
Memory type
Channels Quad Channel Quad Channel
Supports ECC No No
Maximum bandwidth 6,400 MB/s 51,200 MB/s
Maximum memory size 65,536 MB 65,771.52 MB
Intel Core i7 5930K
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Intel Core i7 3930K
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Showing 6 comments.
I think skylake e might be for me. I was gonna jump on the first 10 core but hell it might be priced at 1500$. With that in mind i feel like the second 10 core e series cpu (skylake-e) may be back down to 1000$. Plus even at this point there is what 10-15% ipc gains from sb-e to haswell or even broadwell-e. If anything I might be close to 20% and have a few added features. I have $2000 dollars saved up for my new build and by the time skylake-e hits I should have over 3k with at least one pascal titan or gx80ti. That is unless I hold of for volta lol. I got a titan x atm but depending on how many dx12 games drop this year I may upgrade that sooner. Come on amd bring some heat with zen so intel gets off there asses.
Absolutely spot on - my 3930k runs sweet at 5.2ghz, although I am running a chiller at 4c which keeps it very cool :) I do want to build a new X99 rig at some point and see how well the newer 8 core monsters overclock, but I have read a few forums which indicate they don't overclock as well as SBE chips.
You sound like a cranky old man Grandpa Simpson. I, too, come from the early years of building PCs (486 DX2 was my first build...oh those wonderful AT power supplies), but I am not envious of the kids today and the ease of which it is to build your own rig. Why is it a bad thing when kids in their early teens can build their own computers? It is a great learning experience for them to build a computer from scratch and install an OS/drivers, while other kids blabber on Facebook and barely know who to find the control panel in Windows. We were the same way when we were young man; We wanted faster CPUs, more RAM and better hard drives. It's that "want more" that drives companies to make better hardware. Let the kids push them. By the way, happy 3930k owner (no OCing, it is fast enough). The itch to get a 5930k is tempered by the fact that it is a new socket (=new mobo $$) and new RAM (=new DDR4 $$). The performance gain just isn't enough to justify spending $900+ on new hardware, so I am with Sean on this one. Saving 20 seconds encoding a video or getting 5 extra FPS isn't worth the money.
Waiting for Samsungs 15 or 14 nm architecture, 3rd gen. That will be when I next upgrade. Until then the marketing strategies of PCIE and SATA-E implementations will roll right pass my window. PROCESSOR: AMD 1055T @ stock 2.8GHZ 3.3 boost (- will change this when I get something like a h100i etc. - should get 4.2 ghz stable on turbo) GPU: ATI (AMD) HD5770 (this component is more than adequate for the jobs required) RAM: 8GB (2X 4GB ADATA RAM) OS: SSD HDD FOR INSTANT MEDIA: SSD(2) HDD MASS STORAGE: HDD 1TB HDD BACKUP: NAS RED 3TB This machine is/will be used for basic video editing, transcoding and designing, as well as low end rendering and being a slow machine for high end VFX projects. future machine: 14nm processor, 8 cores (no extra virtual ones), 8 logical threads (no extra virtual ones), 3.8MB per core this will be a great cpu, but might not see one until mid-late 2016
I run my i7 3930k on air with a Noctua air cooler in an R4 Define case and run it at 5Ghz stable all day and night. With that, this thing stays COOL at that. Most of the time, I keep it throttled back to 4.4Ghz, only because of a report I read on wattage usage for running the higher clock speeds. With 32gb of G.Skill 1866 XMP ram and a GTX980 in it currently, it's more than enough for what I am running these days and has been running quite well since I built it in December of 2012 (only the video card was upgraded from a GTX680 last year. I also only throttled down to 4.4Ghz after reading an article last August 2014 about the wattage usage). I actually laugh now, at all of the kids who benchmark all day long as if that means anything, lol. I mean, I come from the 80ns, 2-4mb of ram and making custom profiles for autoexec.bat and config.sys and the importance of which line of code when where so as to free up memory at boot, just to run earlier games such as Stars Wars or Doom or so on. Back then, fps meant something and so, getting a Voodoo or Voodoo2 to add to a 2mb VESA card so you could run Diablo like a champ actually meant something, along with having a 500mhz DX chip that could run it all. You kids today, have no idea how easy you have it. Just curious though, do you contribute anything towards the electric bill, being that so many of you live at home with your parents yet? I figure your bedrooms with monitors, flat panel televisions and 1200w power supplies in your PCs have to be running up the bill quite a bit, not to mention charging all of your other devices, no?
and this is why i will be stuck on my i7 3930k for a few more years. Yea the i7 5930k is a little faster and uses a little less power but not enough to spend a thousand dollars on a new cpu and b.a. motherboard. I wonder if there is any boost in performance given mine runs @ 5GHz i know i would be hard struck to get 5ghz on the i7 5930k. I doubt the next i7 xx30k will even be reason enough to upgrade. I think the next thing that makes me consider an upgrade is when they bring other new things like sata express and pci-e 4.0. DDR4 alone wasn't nearly enough of an upgrade to spend the money. I told myself i wouldn't buy another cpu until i seen a 50% performance upgrade but with performance boost pretty much at a crawl. Also these last few generations of intel cps are not overclocking like sandy bridge did. I have high hopes that we see something significantly faster in the next couple of generations but i doubt it. Not that i need any more cpu power but i do have an itch i can't scratch.
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