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Differences What are the advantages of each

Front view of Intel Core i7 4790K

Reasons to consider the
Intel Core i7 4790K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Front view of Intel Core i7 4790

Reasons to consider the
Intel Core i7 4790

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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing

Benchmarks Real world tests of Core i7 4790K vs 4790

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 4790K
16.1 mHash/s
Core i7 4790
15.62 mHash/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i7 4790K
1.79 fps
Core i7 4790
1.96 fps

PCMark 8 Home 3.0 Accelerated Data courtesy FutureMark

Sky Diver Data courtesy FutureMark

Cloud Gate Data courtesy FutureMark

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 4790K
Core i7 4790

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 4790K
5,140,000 MB/s
Core i7 4790
4,570,000 MB/s

Specifications Full list of technical specs


Core i7 4790K  vs
Clock speed 4 GHz 3.6 GHz
Turbo clock speed 4.4 GHz 4 GHz
Cores Quad core Quad core
Is unlocked Yes No


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

power consumption

TDP 88W 84W
Annual home energy cost 21.2 $/year 20.24 $/year
Annual commercial energy cost 77.09 $/year 73.58 $/year
Performance per watt 11.42 pt/W 10.77 pt/W
Typical power consumption 71.5W 68.25W


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


Core i7 4790K  vs
Architecture x86-64 x86-64
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 1 1
Operating temperature Unknown - 74.04°C Unknown - 72.72°C


PassMark (Overclocked) 6,925.3 6,039.5

integrated graphics

Label Intel® HD Graphics 4600 Intel® HD Graphics 4600
Number of displays supported 3 3
GPU clock speed 350 MHz 350 MHz
Turbo clock speed 1,250 MHz 1,200 MHz

memory controller

Memory controller Built-in Built-in
Memory type
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Core i7 4790K
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Intel Core i7 4790
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Showing 11 comments.
I don't know why I even bother visit this site... <blockquote>Supports trusted computing: Yes vs No</blockquote> And then at specifications column: <blockquote>Supports trusted computing: No vs Yes</blockquote>
Alright thank you i feel better yeah i dont oc is just when i play game is 70C my idle temp is normarly betwen 30 to 40C depend of the temperature in the house
Same as you only I have two fans pulling air out the top of case as well. It all depends on what you want to do, if overclocking you could probably use more cooling but 70c doesn't sound that bad. Heard their are some bad batches out there, folk that have them are getting really bad temps but yours sound ok, when it hit 90 you can panic :-)
ah ok i have 2 front fan and 1 in the back + h60 cpu cooler but only have 3 fan do you think i should put 2 more on the top?
Sounds ok . . . got big Zalman heatsink on mine plus 5 case fans . . . it all helps
i got the 4790k but my temp while i game go to 60 to 70 is it normal?
I have the 4790k, when gaming it hit 4,4 Ghz straight out the box, running really cool, can't seem to get it above 55c . . . Haven't needed to overclock but feel it should hit 5 Ghz no trouble . . . recommend to anyone
I want to get 1 of those 2. The problem isidk which 1 i dont plan to overcloak but i see that the speed is a bit faster with the K per default but does it wortk 80$ difference price? in my country is expensive like that yes. for 80$ difference should i go with the 4790 normal if i dont plan to overcloak?
The 4790k have a higher clock speed ... yes the 4790k is faster ;D
So is the 4790k faster than a 4790 even without overclocking it?
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