How is the 4670k initially 5 to 10% faster than the 3570k?

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tlgriffith

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Sep 6, 2013
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When reading other threads about 3570k vs 4670k, most people say the 4670k is initially 5 to 10 percent faster. Both are rated at 3.4 gigahertz at stock. Does the base increase to the 4670k come from the architecture of the 1150 motherboard? If not then what supplies this increase? If so, exactly how does the 1150 architecture create an increase? And when I mean exactly, please be detailed but succinct.

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bignastyid
The cpus use a different architecture. Haswell can process more instructions per clock than ivy bridge which is why the 4670 is a bit faster than the 3570.
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bryonhowley

bryonhowley

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Really most of the increase actually comes from the build in igpu of the Haswell. If you are running a dedicated GPU you would find very little performance increase. A friend of mine build a i5 4670 rig around Christmas and after we benched it the very few games that did show any increase at all were in the 1-5 fps range. The truth is that an increase of 10% or less really does not give much of anything in the real world other than a Placebo effect.

Now when he compared the HD 4000 to the HD 4600 in the Haswell there was a improvement in performance.
 
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tlgriffith

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Well now I am confused. Others say the increase is due to the architecture, and yet your saying it has to do with the intregrated GPU? Whats the point of going 4670k if I am going to run a discrete card when I know the 3570k will overclock far greater than the 4670k. That initial 5 to 10% is no good because I will be running a discrete card.

 
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bignastyid

bignastyid

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In games the difference between the 2 is little to none depending on the game. In a straight CPU benchmark the 4670k is a little bit faster, In passmark for instance the 4670k scores 7659 and the 3570k scores 7145 so the 4670k was 7% faster. When overclocking the 3570k can usually go higher but a 3570k @ 4.6Ghz is about equal to a 4670k @ 4.3Ghz. One of the reasons for Haswell not ocing as high is Intel used thermal grease on the lid instead of solder like they did on Ivy Bridge, so deliding can help get more out of a Haswell cpu but it's risky as it voids the warranty and there is a possibility of damaging the cpu.
 
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PCDave

PCDave

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Another reason is that the voltage regulator is now on the CPU- and is not on the motherboard anymore. (which is why the temps went up) Also, yeah the only change is the architecture- which supplies the increase, the integrated GPU is also faster- but you wont be benefiting from that.

 
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jaguarskx

jaguarskx

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The increased performance between Ivy Bridge and Haswell is basically 6% on average from my research. I have seen 10% performance average gains but those were based on a more limited selection of benchmarks. The 6% average is based on a much wider range of benchmarks and it is purely for the CPU. The Intel HD 4600 is roughly 33% more powerful than the Intel HD 4000. Regardless, the CPU performance gain (not the Intel HD 4600) is assuming the same number of core and the same clockspeed.

This boost in performance is based on a slightly improved CPU architecture which improves the IPC (instructions per cycle) executed. I am sure this can be achieved in many ways. One way is to improve the timing difference or delay as instructions get pasted along from one process to another. A different method would be wider or alternative pathways for instructions to get to it's next destination to be processed.

From a gaming stand point if you already have an i5-3570k, then it really makes no sense to upgrade to Haswell. The focus of Haswell was not to dramatically improve PC performance. The focus was improved iGPU performance (great for laptops, less useful in desktops... at least for gamers), die shrink to reduce the size of the CPU itself which means lower power consumption (Again, great for laptops, kinda meaningless on the desktop for most people. Lenovo claims a 70% improvement in battery life of the new 2014 ThinkPad X1 Carbon because it switched over to a Haswell CPU). And lastly more integration, the voltage regulator formerly on the motherboard has been integrated into the CPU.


I cannot be exact with my answer because I do not design CPUs for a living. I'm in finance. I am pretty sure even a person who does CPU engineering will have a difficult time explaining exactly what that improvement is due to. Especially if you are seeking a short answer.
 
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jaguarskx

jaguarskx

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The stockspeed of both i5-3570k and i5-4670k is 3.4GHz. Since Haswell is 6% more powerful on average, the i5-4670k is equal to the i5-3570k running at 3.6GHz.

Below is a CPU performance chart for Hitman: Absolution which generally has pretty high system requirements. Note how performance gains drops off at 3.0GHz. An increase to 3.5GHz (16.7%) only provides a 2 FPS gain (3.4%). Starting at 3.5GHz you need to go all the way up to 4.5GHz (28.6%) in order to get that one additional FPS (1.6%).

http://www.techspot.com/review/608-hitman-absolution-performance-benchmarks/page6.html

CPU_03.png
 
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