I5 3750k vs i7 2600k

[stefan37]

Well I posted the gaming build I wanted to use and for CPU I have chosen i7 2600k. But most people told me i5 3750k is way better for gaming because it is Ivy Bridge. I'm not so good with Intel CPUs since I used AMD ones mostly but I wanted to go with Intel on my new build. Can someone explain to me why is i5 3750k better than i7 2600k?

 

[mocchan]

The i5's generally perform the same as the i7's in gaming...which is why most people recommend i5's if your rig is strictly gaming.

The reason for this is because i5's are basically i7's without the hyperthreading, and most games can't utilise more than 4 threads...so there's no point to the 8 that the i7 can provide.

Now going onto Ivy Bridge and Sandy Bridge. Ivy Bridge generally performs around 5-10% faster than Sandy Bridge clock for clock, so the i5 3570k has a small advantage over the i7 2600k.

 

[kevin_07]

For a very extensive comparison of these processor groups see the following link http://www.madshrimps.be/articles/article/1000289/#axzz1tAzOocA9.

 

[kevin_07]

Stefan I hope its not too late to change your mind about processors in your new build. I'm in the process of a new build my self and chose the i5-3570K based on the benchmarks and price. I will be overclocking:
Stock CPU 3.4 GHz Turbo 3.8GHz
CPU stable @4.7GHz 1.27v ( @4.8GHZ out-performs I7-2600K O.C'ed at 5GHz with less heat, see links)
Stock iGPU 1150MHZ (using much improved HD4000 over the i7-2600K)
iGPU stable @1600MHz 0.12v
You might be able to do decent gaming w/o discrete graphics card at this time and anyway your options for SLI later are better with the 3rd generation card. Another good article is: http://www.hitechlegion.com/reviews/processors/18324-intel-core-i5-3570k-ivybridge

 

[kajabla]

On the other hand, IB CPUs have an inferior thermal interface system, so they may not last as long with heavy overclocks due to their high operating temperatures. Ivy is still probably the way to go.
As far as I can tell, you haven't actually posted your build. http://www.tomshardware.com/forum/forum1.php?config=tomshardwareus.inc&cat=28&post_cat_list=|28*tomshardwareus|31*tomshardwareus|33*tomshardwareus|13*tomshardwareus|&orderSearch=0&recherches=1&resSearch=200&jour=0&mois=0&annee=0&titre=3&search=&pseud=stefan37&daterange=2&searchtype=1&searchall=1

 

[cbrunnem]

Stefan I hope its not too late to change your mind about processors in your new build. I'm in the process of a new build my self and chose the i5-3570K based on the benchmarks and price. I will be overclocking:
Stock CPU 3.4 GHz Turbo 3.8GHz
CPU stable @4.7GHz 1.27v ( @4.8GHZ out-performs I7-2600K O.C'ed at 5GHz with less heat, see links)
Stock iGPU 1150MHZ (using much improved HD4000 over the i7-2600K)
iGPU stable @1600MHz 0.12v
You might be able to do decent gaming w/o discrete graphics card at this time and anyway your options for SLI later are better with the 3rd generation card. Another good article is: http://www.hitechlegion.com/reviews/processors/18324-intel-core-i5-3570k-ivybridge

hahahaha good luck with overclocking that to 4.8 with good temps unless your using custom water cooling.

 

[HugoStiglitz]

yup, kevin_07 you are set for dissapointment there.

yes ivy is definatly faster clock for clock. (10% is the MAXIMUM, average is 3-5%) and use less voltage doing it.

HOWEVER, even at much less voltage IVY produces MUCH MORE Heat than sandy.
this is due to the die shrink and having 40% more transistors (mostly for the HD4000 graphics) in that smaller area. combine that with the switch from soldered based TIM to a paste means that heat dispursion is ALOT WORSE.

i still agree building a new system today i would choose IVY, but on the same note i will not be changing from sandy to ivy. not worth the $$$ IMO.

 

[kevin_07]

yup, kevin_07 you are set for dissapointment there.

yes ivy is definatly faster clock for clock. (10% is the MAXIMUM, average is 3-5%) and use less voltage doing it.

HOWEVER, even at much less voltage IVY produces MUCH MORE Heat than sandy.
this is due to the die shrink and having 40% more transistors (mostly for the HD4000 graphics) in that smaller area. combine that with the switch from soldered based TIM to a paste means that heat dispursion is ALOT WORSE.

i still agree building a new system today i would choose IVY, but on the same note i will not be changing from sandy to ivy. not worth the $$$ IMO.

Again folks check the citation http://www.madshrimps.be/articles/article/1000289/Intel-Ivy-Bridge-i5-3570K-i7-3770K-Review/9#axzz1wlKe5nII
before spewing all the negativity. The review speaks for itself and in no uncertain terms IT IS DOABLE on air and generates less heat than Sandies @ 5GHz

 

[stefan37]

On the other hand, IB CPUs have an inferior thermal interface system, so they may not last as long with heavy overclocks due to their high operating temperatures. Ivy is still probably the way to go.
As far as I can tell, you haven't actually posted your build. http://www.tomshardware.com/forum/forum1.php?config=tomshardwareus.inc&cat=28&post_cat_list=|28*tomshardwareus|31*tomshardwareus|33*tomshardwareus|13*tomshardwareus|&orderSearch=0&recherches=1&resSearch=200&jour=0&mois=0&annee=0&titre=3&search=&pseud=stefan37&daterange=2&searchtype=1&searchall=1

I did post my build but just not on this section here is a link http://www.tomshardware.co.uk/forum/348817-13-gaming-1000

 

[stefan37]

Also thank you for your replies but can someone tell me which would be the best for my build oh and also in my build I said I will buy HD 7850 but now I think I'll get HD 7870 one...

 

[stefan37]

Stefan I hope its not too late to change your mind about processors in your new build. I'm in the process of a new build my self and chose the i5-3570K based on the benchmarks and price. I will be overclocking:
Stock CPU 3.4 GHz Turbo 3.8GHz
CPU stable @4.7GHz 1.27v ( @4.8GHZ out-performs I7-2600K O.C'ed at 5GHz with less heat, see links)
Stock iGPU 1150MHZ (using much improved HD4000 over the i7-2600K)
iGPU stable @1600MHz 0.12v
You might be able to do decent gaming w/o discrete graphics card at this time and anyway your options for SLI later are better with the 3rd generation card. Another good article is: http://www.hitechlegion.com/reviews/processors/18324-intel-core-i5-3570k-ivybridge

Nah It isn't late it is actually early because I'm buying the PC in September but I like to think about parts on time because I don't want mess later

 

[kevin_07]

Notice that the naysayers* trying to dissuade you from starting with a leading edge 3rd generation processor are both sandy users, nuff sed! Maybe they harbor unusual feelings toward those of us not stuck with yesterday's technology. The i5-357K is just a cut below the i7-3770K, arguably Intel's fastest consumer processor without going extreme (meaning $$$). *one of them is using an air-cooler that wouldn't fit in some garages and the other is using water which further complicates a build in a smaller case (not to mention water around the electronics in what might be your first build). You spoke of a "mess later". Just sayin'!

 

[sarinaide]

1] 2600K (2nd gen i7) is a quad core with hyperthreading, virtualizing 8 threads. The 3570k is a 3rd gen i5 based on the new IB 22nm dieshrink.

2] IB vs SB is at best a 2-3% improvement so its not a massive peformance jump.

3] If not on a new platform, it is advisable to go with IB....I would recommend the 3570K with the Gigabyte Z77-UD5H....if you have cash to blow then the Gigabyte G3 Assassin....the best Z77 boards out right now.

 

[kevin_07]

I thinka z77 mobo would be wasted on an i7-2xxx and you don't need an i7- if hyperthreading, i.e. 2 threads/core is not essential for your usual application, like gaming. The HD 7870 runs around $330. I'd opt for a comparably priced NVidia product preferably from EVGA for great cust. service but that might just be my personal bias! The EVGA SuperClocked GeForce GTX 570 (Fermi) 1280MB 320-bit GDDR5 is $295 at Newegg last time I checked. It is compared to the new HD 6970 which sells at the same price point, see: http://www.hardwaresecrets.com/article/EVGA-GeForce-GTX-570-Superclocked-Video-Card-Review/1153

 

[sarinaide]

1] Yes a second gen intel core I processor (Sandybridge) is wasted on a Z7X chipset...

2] Why on the face of this planet did you take a GTX 570 over a HD 7870???? good lawd.

 

[kevin_07]

My bad ... not very familiar with the Radeon products

 

[HugoStiglitz]

Kevin_07

have you looked at other reviews?

extract from below link

@ 1.1V IB runs 4,25C hotter then SB with HT off. (16.03%)
@ 1.2V IB runs 10,75C hotter then SB with HT off. (36.44%)
@ 1.3V IB runs 15,00C hotter then SB with HT off. (44.11%)
@ 1.4V IB runs 24,75C hotter then SB with HT off. (65.56%)

thats a 3570k vs a 2600k (with HT off) so for all purposes a 2500k

So in short 50% of IB chips will do:

- ~4.4Ghz on Air with HT on, this is about 4.7Ghz on a Sandy Bridge
- ~4.7Ghz on a decent custom watercooling loop = 5Ghz Sandy Bridge
- ~5.0Ghz on a good custom watercooling loop = 5.3Ghz Sandy Bridge.

the above was done with

Cooling
Custom loop, dual HwLabs GTX360 GT-15 Push-Pull 10-15c ambient.

thats 1000-1200watts of cooling ability.

i dont know where you got the expectation to get an IB @ 4.7 with Air. unless you bank on getting a golden chip.

for your reference see below
http://www.overclock.net/t/1242313/...rmance-temps-etc-couple-of-ln2-scores-are-up#

again read my post. I never reccomended the OP get a Sandy over an Ivy.

 

[HugoStiglitz]

and here is a quote from your own thread

Ivy bridge will not cut it on air. 4600-4800MHz is easily doable with our ES models. But that's where it ends on air or water. We were spoiled with Sandy Bridge with some silicon doing daily 5000MHz on air. Benching on air or water at +5600MHz was no issue with the SB generation.

they are using an ES chip (engineering sample) can only be taken as a very rough guide.

 

[HugoStiglitz]

Benchmarks from my linked thread this is with both SB & IB at the exact same clock speeds

3DMark 11.
3.4Ghz - 0.75% Improvement
4.5Ghz - 4.63% Improvement

3DMark Vantage
3.4Ghz - 3.47% Improvement
4.5Ghz - 4.41% Improvement

CineBench
3.4Ghz - 4.41% Improvement
4.5Ghz - 5.35% Improvement

SuperPi 32M
3.4Ghz - 3.37% Improvement
4.5Ghz - 2.77% Improvement

Wprime 1.55
3.4Ghz - 4.76% Improvement
4.5Ghz - 4.26% Improvement

Wprime 2.09
3.4Ghz - 4.71% Improvement
4.5Ghz - 3.94% Improvement

Handbrake
3.4Ghz - 7.39% Improvement
4.5Ghz - 8.08% Improvement

which is a 4.45% average clock for clock speed increase.

 

[kajabla]

The review speaks for itself and in no uncertain terms IT IS DOABLE on air and generates less heat than Sandies @ 5GHz

The 3700K and 3570K run at 89 and 80C respectively. The 2700K and 2500K run at 75 and 63C respectively. Just saying. Ivy is indisputably hotter.

OP, has anyone told you to drop to 1600mhz RAM?

 

[cbrunnem]

Notice that the naysayers* trying to dissuade you from starting with a leading edge 3rd generation processor are both sandy users, nuff sed! Maybe they harbor unusual feelings toward those of us not stuck with yesterday's technology. The i5-357K is just a cut below the i7-3770K, arguably Intel's fastest consumer processor without going extreme (meaning $$$). *one of them is using an air-cooler that wouldn't fit in some garages and the other is using water which further complicates a build in a smaller case (not to mention water around the electronics in what might be your first build). You spoke of a "mess later". Just sayin'!

i wonder who you are talking about....? Brave enough to say something like that and not to name names. and its not like its offensive or anything.

you are missing the point though. a 2600k has the ability to overclock past where a 3570k would still hold an advantage.

on top of that if people buy cheap air(212+) then it seems they would be lucky to get 4.3 where as on cheap air you could get at least 4.6-4.7.

 

[kevin_07]

to cbrunnem and hugo stuglitz:
What I misinterpretted for a dogmatic "brand loyalty" regarding sandy bridge over ivy may, in truth, be just a broader knowledge of of the whole overclocking/cooling subject. The facts you led me to are irrefutable and I thank you for the edification. This being my first serious build ( at a considerable cash-outlay) I may have been overly defensive of my decisions(good or bad) that went into the selection of components. I will have to assemble it and hope for the best!?! The processor (i5-3570K) and 8Gb 1866MHZ RAM arrives tomorrow...the final pieces. I'm not sure why the faster 1866MHz RAM was a mistake over 1600MHz but would appreciate any insight you can provide, kajabla. Always willing to learn. Please accept this post as a humble apology for any wrankling I may have caused.

 

[mongobird]

1] 2600K (2nd gen i7) is a quad core with hyperthreading, virtualizing 8 threads. The 3570k is a 3rd gen i5 based on the new IB 22nm dieshrink.

2] IB vs SB is at best a 2-3% improvement so its not a massive peformance jump.

3] If not on a new platform, it is advisable to go with IB....I would recommend the 3570K with the Gigabyte Z77-UD5H....if you have cash to blow then the Gigabyte G3 Assassin....the best Z77 boards out right now.

A couple of questions:

-what kind of graphics card are you running with the Z77?
-know of any issues with the Gigabyte MBs? I just went through RMAing GB MBs and it turned out they had a controller problem which kept my video card (6770) from working on them. Nice board otherwise. But really really bad experience.

 

[cbrunnem]

to cbrunnem and hugo stuglitz:
What I misinterpretted for a dogmatic "brand loyalty" regarding sandy bridge over ivy may, in truth, be just a broader knowledge of of the whole overclocking/cooling subject. The facts you led me to are irrefutable and I thank you for the edification. This being my first serious build ( at a considerable cash-outlay) I may have been overly defensive of my decisions(good or bad) that went into the selection of components. I will have to assemble it and hope for the best!?! The processor (i5-3570K) and 8Gb 1866MHZ RAM arrives tomorrow...the final pieces. I'm not sure why the faster 1866MHz RAM was a mistake over 1600MHz but would appreciate any insight you can provide. Always willing to learn. Please accept this post as a humble apology for any wrankling I may have caused.

its not a bad decission in regards with performance but the fact that the performance you get for the money you spend is not worth it. you will not gain very much in terms of gaming performance.

 

[kevin_07]

Thanks for the heads up on the RAM speed. The next 2 sticks will be 1600MHz