i5 6600k vs. i5 7600k overclockability

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jtabb1256

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Jan 4, 2014
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I know the 6600k and the 7600k are about the same in performance clock-for-clock. I don't care that the 7600k comes at a higher stock clock.

The 7600k has poor quality TIM (just like the i7 7700k), and I've seen articles / videos where delidding and putting the Coollaboratory Liquid Pro decreased temps by 10-20 °C, which is significant.

My two questions are as follows:
1. Does the 6600k have the same poor quality TIM as the 7600k?
2. On average, do the 7600k's achieve a higher OC than the 6600k's? (Without delidding either one)

I've looked around, but couldn't find hard data on my above questions. Feel free to answer one or both questions. Based on what I've seen, I'd expect around a 4.8 - 4.9 GHz OC on them with the NH-D15.
 
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JackNaylorPE
Didn't address it for two reasons:

1) Have no way of knowing
2) It's not relevant ... does it matter if they are the same if the both steenk ?

A. Both the 6700k and 7700k improve substantially after delidding

https://www.pugetsystems.com/labs/articles/Video-Card-Performance-2GB-vs-4GB-Memory-154/

The results are shocking as it may proof that Intel has once again used poor quality TIM on their processors.
Click to expand...

B. Outta the box, the 7700k has a much higher clock but temp results are comparable. This is because KL is an optimized version of SL with greater efficiency

Look at the chart here:

http://www.overclock.net/t/1621347/kaby-lake-overclocking-guide-with-statistics

... and see how many of the best OCs are delidded. A...
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weberdarren97

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Aug 10, 2015
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1) Kaby Lake is the result of a complacent Intel since they haven't had proper competition in the high end CPU market for over a decade (until Ryzen happened). IMO, Skylake was their last great offering for gaming. Yes, the Z270 platform offers various benefits not seen on the Z170 platform, but nothing is stopping you from putting a 6600K on a Z270 board. That being said, Kaby Lake does have its advantages over Skylake. Better integrated graphics, less picky memory controller, more stable OC potential.

2) The 7600K usually does reach a higher overclock. Once in awhile, a user ends up with a 7600K that OC's terribly, worse than most 6600K chips do, but this is just the silicon lottery doing its thing and doesn't represent the quality of the 7600K in any way.

To sum this up: 6600K and Z170 is where the value per dollar is at. 7600K and Z270 is where the best performance is at.
 
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JackNaylorPE

JackNaylorPE

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While we really haven't seen a notable increase in gaming performance since Sandy Bridge, the 7xxx series better overclock ability comes from it's architecture and efficiency, not the TIM.

http://www.tomshardware.com/reviews/kaby-lake-de-lidding-overclocking-test,4970.html
https://www.youtube.com/watch?v=sVLUDsNRR-o
http://www.guru3d.com/news-story/der8auer-delid-die-mate-2-released.html
http://der8auer.com/delid-die-mate/

Pair it with Thermal Grizzly Conductonaut and some UHU high temperature silicone glue and ya set.

You are looking at about a 20C decrease with the Grizzly stuff
 
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jtabb1256

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Okay thank you for your input.

That Tom's article is awesome.

Neither of you answered my 1st question, though.
I would prefer to not delid. Does the i5 6600k use the same poor quality TIM as the i5 7600k?
If so, I'll just get the i5 7600k because you said it'll probably OC better. It's for my uncle, not myself, so that's why I'd prefer not to delid.
 
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weberdarren97

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Aug 10, 2015
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6600K uses pretty good TIM. As long as you're not using modified motherboards meant specifically for breaking world records, you'll be fine with the stock TIM and a good CPU cooler.
 
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JackNaylorPE

JackNaylorPE

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Didn't address it for two reasons:

1) Have no way of knowing
2) It's not relevant ... does it matter if they are the same if the both steenk ?

A. Both the 6700k and 7700k improve substantially after delidding

https://www.pugetsystems.com/labs/articles/Video-Card-Performance-2GB-vs-4GB-Memory-154/

The results are shocking as it may proof that Intel has once again used poor quality TIM on their processors.
Click to expand...

B. Outta the box, the 7700k has a much higher clock but temp results are comparable. This is because KL is an optimized version of SL with greater efficiency

Look at the chart here:

http://www.overclock.net/t/1621347/kaby-lake-overclocking-guide-with-statistics

... and see how many of the best OCs are delidded. A stable OC is dependent upon whether you hit the "voltage wall" or the "temperature wall". By dropping temps 20 - 30C, one of those disappears.

The question always remains "is that really necessary ? ... why do you need to do that ? ... To quote Mr. Hillory ..... "because it's there" (to be conquered).

Obviously it's a step many feel will be to risky to take, ... but with the tools available today, the risk is greatly minimized. But even for those unwilling or uninterested in taking this step, the data that comes out of it should answer your question. Yes, the TIM used on both CPUs significantly reduces overclocking ability. But if you are not going to take that step, the question is irrelevant ... whether the efficiency improvements or the TIM is responsible for the 7xxx series CPUs better performance, what difference does it make if you are not delidding ... it performs better, it's faster ... does it matter why ?

 
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