How much more performance will i get??

[theman2680]

I just got an i5 4690k, and I love it to start off. but would i have gotten a lot better performance if i got a i7? Also i am overclocking at 3.9 with temps around 75 with gaming. I think that is high. I have a hyper T4 with artic thermal compound. I would like to overclock to 4.2 or higher but the temps get to 85-90s. any thoughts??

 

[smorizio]

i5 and i7 are the same core cpu. the i7 is faster in some games and aps that use hyper threading. in games now going with the fastest gpu you can buy is the best use of gaming funds now. with the newer gpu dropping.

 

[parani]

If you want to overclock above 4.2mhz you may need to tweak the core voltage around 1.35v but you should have a good cooling system like Corsair Hydro series like h80 or h100i. Even though if you overclock above 4.4mhz it wont give much performance difference.There wont be any difference if you are gaming at 2k or 4k above 4.5mhz. You will be fine for most of the games that uses upto 8core .May be in some CPU intensive games like ARMA 3, Crysis 3 you will notice some shutters but you will be fine anyhow it doesnt affect FPS much.There is about 10 to 20 FPS difference based on the games. i5 4690k is one of the best gaming processor that can holdon atleast for 2 years of gaming

 

[Dragos Manea]

If you want to overclock above 4.2mhz you may need to tweak the core voltage around 1.35v but you should have a good cooling system like Corsair Hydro series like h80 or h100i. Even though if you overclock above 4.4mhz it wont give much performance difference.There wont be any difference if you are gaming at 2k or 4k above 4.5mhz. You will be fine for most of the games that uses upto 8core .May be in some CPU intensive games like ARMA 3, Crysis 3 you will notice some shutters but you will be fine anyhow it doesnt affect FPS much.There is about 10 to 20 FPS difference based on the games. i5 4690k is one of the best gaming processor that can holdon atleast for 2 years of gaming

What 1.35V?....are serious on a haswell you should never go above 1.3, heck i got mine at 4.4 with 1.26, to get to to 4.5 i must go to 1.33 and 4.6 to 1.37 but i will frie my cpu in less then a year with a voltage over 1.3 so i got my self set to 4.4 with 1.26V. As cooler i use a AIO Deepcool Maelstrom 120 and in gaming it does not go over 56 degrees celsius. (Crysis 3, Battlefield 4, Witcher 3). Got my case moded and i have 2 fans front intake, 1 fan botom intake, 1 fan rear exaust (The AIO radiator on this one) and 2 fans top exaust, all fans are 120mm.
On topic, you will be fine at 3.9 ghz not mhz how parani said. But i will advice you an a more powerfull cooler or a better case airflow (more fans if it possible). It is a very hot cpu and it must have plenty of cooling/airflow.

 

[parani]

Every silicon lattice may differ from another.We have to check for our stable frequency and voltage. So only i mentioned around 1.35.some can easily achieve 4.4mhz at 1.25 and some at 1.3v .i heard some using CM hyper 212 Evo achieved 4.7ghz at 1.35 volt @65degree.But i dont know he is correct. But 1.35 is most of the 4690k can bear if we have a decent cooler

 

[Dragos Manea]

Every silicon lattice may differ from another.We have to check for our stable frequency and voltage. So only i mentioned around 1.35.some can easily achieve 4.4mhz at 1.25 and some at 1.3v .i heard some using CM hyper 212 Evo achieved 4.7ghz at 1.35 volt @65degree.But i dont know he is correct. But 1.35 is most of the 4690k can bear if we have a decent cooler

http://www.techpowerup.com/forums/threads/haswell-max-safe-voltage-under-water.206840/

http://www.tomshardware.co.uk/answers/id-2739638/4690k-overclock-max-safe-voltage-temperature.html

Everyone says no matter the cooler for a safe 24/7 configuration max 1.3V, anything over 1.3 will shorten greatly the life span of the cpu.

EDIT: Google your self max safe voltage for haswell cpu

 

[synphul]

It depends on what you're using the pc for. For primarily gaming then no the i7 wouldn't make a huge difference since most games don't show much if any benefit from hyperthreading. Hyperthreading can help keep the cores busy more often in workloads that take advantage of it but it's still a quad core cpu like the i5. The other primary difference are clock speeds out of the box. The 4690k's turbo boost out of the box being 3.9ghz and the 4790k's being 4.4ghz. The i7 typically costs 50% more than the i5 and you definitely won't see 50% performance improvement.

At 3.9ghz I wouldn't really consider that overclocked. 4.2ghz should be easy enough using a budget air cooler like a 212 evo or cryorig h7. Ambient temps will also play a role in cooling so without knowing your room temps it's hard to say about that cooler. Here's a link to some tests done by dvtests regarding the t4 vs the 212 evo, the t4 failed while the 212 evo did pretty well. I'd recommend a better cooler though water cooling isn't required either. An h100i is overkill and overpriced for the cooling needed.

http://www.dvtests.com/cooler-master-hyper-t4-test-and-review/

When it comes to applying more core voltage each chip is a little different. A simple way to go about it is to increase the multiplier a little at a time and stress test for stability using things like asus realbench, intel burn test, p95 version 26.6, etc. Use a program like hwinfo64 to keep an eye on vcore and thermals or you can also use something like realtemp to keep track of temps. If the multiplier is raised and the pc crashes (unstable, bsod) then it needs a little more vcore or core voltage.

As some others have pointed out, 1.3v is where most people are comfortable running haswell or devil's canyon cpu's for daily use. 1.35v is getting near the upper limit of 'safe', personally I keep mine below 1.3v. I have two pc's both running the 4690k, one at 4.6ghz the other at 4.2ghz and the one at 4.2 I didn't even raise the vcore. It's cooled with a 212 evo and even when ambient temps reach 30c in summer it doesn't struggle to keep it cool.

Again each cpu is different but the i5 I have at 4.6ghz isn't even running vcore over 1.3v. 1.35v for 4.2 is either a terrible overclocking chip (poor luck with the silicon lottery) or someone hasn't spent much time fine tuning it. The more vcore the more heat it produces. If you're unfamiliar with overclocking check out some haswell overclocking guides that can give some basic instructions. Something like this for instance.

http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics

The 4690k isn't really all that 'hot' despite core temps. With a decent air cooler and reasonable case airflow and ambient room temps it should be able to handle gaming loads around 60-70c even when overclocked. That's 30-40c below the point where it begins to throttle. If your ambient temps are higher, around 30c or so you may need a better cooler. Any cooler whether air or all in one water cooling rely on ambient room air to cool the cpu one way or another and the higher the heat in the room the more cooling will be needed. Cooler air cools better than hotter air.

 

[Dragos Manea]

It depends on what you're using the pc for. For primarily gaming then no the i7 wouldn't make a huge difference since most games don't show much if any benefit from hyperthreading. Hyperthreading can help keep the cores busy more often in workloads that take advantage of it but it's still a quad core cpu like the i5. The other primary difference are clock speeds out of the box. The 4690k's turbo boost out of the box being 3.9ghz and the 4790k's being 4.4ghz. The i7 typically costs 50% more than the i5 and you definitely won't see 50% performance improvement.

At 3.9ghz I wouldn't really consider that overclocked. 4.2ghz should be easy enough using a budget air cooler like a 212 evo or cryorig h7. Ambient temps will also play a role in cooling so without knowing your room temps it's hard to say about that cooler. Here's a link to some tests done by dvtests regarding the t4 vs the 212 evo, the t4 failed while the 212 evo did pretty well. I'd recommend a better cooler though water cooling isn't required either. An h100i is overkill and overpriced for the cooling needed.

http://www.dvtests.com/cooler-master-hyper-t4-test-and-review/

When it comes to applying more core voltage each chip is a little different. A simple way to go about it is to increase the multiplier a little at a time and stress test for stability using things like asus realbench, intel burn test, p95 version 26.6, etc. Use a program like hwinfo64 to keep an eye on vcore and thermals or you can also use something like realtemp to keep track of temps. If the multiplier is raised and the pc crashes (unstable, bsod) then it needs a little more vcore or core voltage.

As some others have pointed out, 1.3v is where most people are comfortable running haswell or devil's canyon cpu's for daily use. 1.35v is getting near the upper limit of 'safe', personally I keep mine below 1.3v. I have two pc's both running the 4690k, one at 4.6ghz the other at 4.2ghz and the one at 4.2 I didn't even raise the vcore. It's cooled with a 212 evo and even when ambient temps reach 30c in summer it doesn't struggle to keep it cool.

Again each cpu is different but the i5 I have at 4.6ghz isn't even running vcore over 1.3v. 1.35v for 4.2 is either a terrible overclocking chip (poor luck with the silicon lottery) or someone hasn't spent much time fine tuning it. The more vcore the more heat it produces. If you're unfamiliar with overclocking check out some haswell overclocking guides that can give some basic instructions. Something like this for instance.

http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics

The 4690k isn't really all that 'hot' despite core temps. With a decent air cooler and reasonable case airflow and ambient room temps it should be able to handle gaming loads around 60-70c even when overclocked. That's 30-40c below the point where it begins to throttle. If your ambient temps are higher, around 30c or so you may need a better cooler. Any cooler whether air or all in one water cooling rely on ambient room air to cool the cpu one way or another and the higher the heat in the room the more cooling will be needed. Cooler air cools better than hotter air.

Well this is my case, in summer is almost 40 degrees so it is a bit difficult to cool it, but point well highlighted by synphul , i was sugesting from my personal view the cooling but yes the maximum ambient temperature is important to know so we can say what cooler you need.