Who's buying a 6 core Coffee Lake CPU? (Poll Inside)

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Mar 10, 2006
11,715
2,012
126
I am not really surprised at all by the poll. A certain % of posters would never buy intel regardless, and another % have recently upgraded already (either HEDT or Ryzen), or are satisfied with 4 cores. So 40% seems like a fairly good percentage to me. As for the general market, I dont think any new cpu is going to "sell like hotcakes", the market is just too mature. What will happen is that the mainstream buyer, when he finally decides to upgrade, will get more for his money and not even know it.

8700K and 8600K are "K" SKUs, which tend to be targeted at enthusiasts (a market that's growing).

I think 8700K and 8600K will sell far better than 7700K and 7600K did; 7600K especially got slaughtered by Ryzen 5 1600 (though 7700K appears to have been unaffected by Ryzen as it is still the best gaming CPU).
 

VirtualLarry

No Lifer
Aug 25, 2001
56,453
10,120
126
I think 8700K and 8600K will sell far better than 7700K and 7600K did
6C/12T and 6C/6T, what's not to like? (Except, possibly, the price, and the fact that you'll have to buy a new mainboard.)

The 7700K and 7600K were just more of the same Skylake arch., maybe slightly higher OC clocks, but anyone who was a "serious gamer", by that point, had already purchased Skylake 6700K. And the improved iGPU didn't matter much to enthusiasts / gamers, since they were just going to drop in a higher-end dGPU anyways.

But 50% more cores? Yes, please! (That's what got me onto some Ryzen 5 1600 rigs.)
 
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Mar 10, 2006
11,715
2,012
126
6C/12T and 6C/6T, what's not to like? (Except, possibly, the price, and the fact that you'll have to buy a new mainboard.)

The 7700K and 7600K were just more of the same Skylake arch., maybe slightly higher OC clocks, but anyone who was a "serious gamer", by that point, had already purchased Skylake 6700K. And the improved iGPU didn't matter much to enthusiasts / gamers, since they were just going to drop in a higher-end dGPU anyways.

But 50% more cores? Yes, please! (That's what got me onto some Ryzen 5 1600 rigs.)

Kabylake was nice for people who want every last MHz and didn't already have SKL, but I really think the "more cores," and aggressive binning is the way to go.
 
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PeterScott

Platinum Member
Jul 7, 2017
2,605
1,540
136
The i5-8600K is probably the real sleeper, but we haven't seen a serious 6C/6T since PhII, hence the lukewarm poll response.

Yeah. I think real life response to i5-8600K will be MUCH better than the poll indicates. Online everyone buys the best thing available.

In real life people are more price/performance motivated. Overclocked for both, I expect the performance difference will be much smaller than the price difference, leading to a lot more people opting for the i5.
 
Mar 10, 2006
11,715
2,012
126
Yeah. I think real life response to i5-8600K will be MUCH better than the poll indicates. Online everyone buys the best thing available.

In real life people are more price/performance motivated. Overclocked for both, I expect the performance difference will be much smaller than the price difference, leading to a lot more people opting for the i5.

i5 has always undersold i7 K among DIY, and I don't expect this to be any different. The i7 has HT and higher clocks, which is worth the extra $100.

But I do think 8600K will help Intel's position against competition significantly. A 4C/4T chip against a 6C/12T chip, even with the per-core performance going to the former, just wasn't good from a marketing perspective. 6C/6T is easier to sell in this case as long as it has a clear per-core perf edge (which it will).
 

PeterScott

Platinum Member
Jul 7, 2017
2,605
1,540
136
i5 has always undersold i7 K among DIY, and I don't expect this to be any different. The i7 has HT and higher clocks, which is worth the extra $100.

Where is the evidence that the i7 K always outsold the i5 K?

Higher clocks on a i7 K series are kind of irrelevant for overclockers, in fact you may be able to overclock an i5 higher because HT increase heat/power.
 

dullard

Elite Member
May 21, 2001
25,214
3,632
126
Where is the evidence that the i7 K always outsold the i5 K?

Higher clocks on a i7 K series are kind of irrelevant for overclockers, in fact you may be able to overclock an i5 higher because HT increase heat/power.
I don't think Intel has ever released the definitive numbers to answer it. But, we can get snapshots of data points. For example, the 7700K dominates the 7600K and the 6700K >> 6600K here:
https://www.cpubenchmark.net/share30.html

This one is more variable but shows similar trends: 7700K > 7600K in sales, the 6700K is fairly high up but the 6600K didn't even make the list.
https://www.amazon.com/Best-Sellers-Computers-Accessories-Computer-CPU-Processors/zgbs/pc/229189

Other lists are similar. Processor buyers usually want the cheapest (Pentium or less) or the fastest (i7). Value shoppers which might go for the i5 tend to be rare in the DIY market.
 

jpiniero

Lifer
Oct 1, 2010
14,847
5,457
136
The 2500K definitely outsold the 2600K. The trend to i7 happened more because it became much more useful in games to have the HT since 4 threads wasn't enough. With the 8600K now having 6 cores I think you will see sales go back to being more i5.
 

DaveSimmons

Elite Member
Aug 12, 2001
40,730
670
126
The 2500K definitely outsold the 2600K. The trend to i7 happened more because it became much more useful in games to have the HT since 4 threads wasn't enough. With the 8600K now having 6 cores I think you will see sales go back to being more i5.

I might do this. I have no budget limit for my October / November gaming build but I care about power efficiency for less noise. Depending on benchmarks and power use I might get either the i5 or possibly the non-K i7. If I'd been buying the 7700, 65 watts vs. 91 is appealing to me.
 

TheF34RChannel

Senior member
May 18, 2017
786
309
136
6600K* -> 8700K = definitely! As soon as possible I'll purchase one and keep it until at least Tiger Lake. I need the additional cores and HT grunt for my games.

Knowing how higher frequency memory benefits games I'm at an impasse as to what to get; inflated prices for one, and also I'm fine with tinkering with CPU BIOS stuff but I'm not one for fiddling with getting memory to work. Depends in the board of course. For now I'm aiming for 3333-3466MHz and dreaming of 4600MHz. The price difference is mental though.

*@ 4.6GHz w/ 1.280-1.296v is pretty darn decent! So I'll sell it just fine.
 
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PingSpike

Lifer
Feb 25, 2004
21,733
564
126
I don't think you'll see the retail prices on the old CPUs go down much if at all. Its not about what they're worth, Intel just has really good supply management of their stock so they just won't sell them for less. Used market is an entirely different story, but 7700K will actually retain the "best on platform" premium attracting status thanks to the z370 motherboard requirement so even that isn't likely to be as exciting as it could be.
 
Mar 10, 2006
11,715
2,012
126
The 2500K definitely outsold the 2600K. The trend to i7 happened more because it became much more useful in games to have the HT since 4 threads wasn't enough. With the 8600K now having 6 cores I think you will see sales go back to being more i5.

Nah. 8700K should be clocked a lot better out of the box, and SMT is a good selling point. I think 8600K will be second fiddle to 8700K in DIY sales. But we'll see.
 

Headfoot

Diamond Member
Feb 28, 2008
4,444
641
126
8700k is gonna be a weak upgrade from 5820k so I'm not pulling the trigger, not worth it.
 

crashtech

Lifer
Jan 4, 2013
10,556
2,139
146
Seems so strange that 4C/8T is nowhere to be seen in this lineup. If it does re-appear, it will be what, some kind of pumped-up i3 now?
 

dullard

Elite Member
May 21, 2001
25,214
3,632
126
Seems so strange that 4C/8T is nowhere to be seen in this lineup. If it does re-appear, it will be what, some kind of pumped-up i3 now?
I think there are several issues at play here.

1) Intel's hyper-threading has always been fairly weak. 20% gain is about the most you can expect. That would put a 4 core, 8 thread chips at best about equal to 5 cores. So, it would be worse than the 6-core i5 parts. Although there are a few exceptions at up to maybe 30% gain, there are just as many exceptions where it hurts performance.

2) Low hyper-threading gains combined with Amdahl's law and faster turbos makes hyper-threading worse and worse as you add more cores. Even if you do gain performance with hyper-threading, the task at hand might not be sufficiently parallelizable to justify the extra heat produced. This is especially true when you are talking about the lower end chips that didn't make the i7 cut and heat is already a problem.

3) 4 cores, 8 threads is a marketing nightmare when you want to sell a more expensive 6 core, 6 thread chip. How can you charge more for fewer threads and explain that to customers? Hyper-threading is easy to explain to customers only when the true cores are in multiples of 2 (and not multiples of 3).

The 8th generation is being launched in many phases. Some will be Kaby Lake Refresh, some will be Coffee Lake, some will be CannonLake, and maybe there is a Coffee Lake refresh. I wouldn't be surprised if 4 cores, 8 threads comes back to the 8th generation in 2018. But if it does, it will likely be an expensive i3 that would push me to think the i5 is the better choice.
 
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Mar 10, 2006
11,715
2,012
126
I think there are several issues at play here.

1) Intel's hyper-threading has always been fairly weak. 20% gain is about the most you can expect. That would put a 4 core, 8 thread chips at best about equal to 5 cores. So, it would be worse than the 6-core i5 parts. Although there are a few exceptions at up to maybe 30% gain, there are just as many exceptions where it hurts performance.

2) Low hyper-threading gains combined with Amdahl's law and faster turbos makes hyper-threading worse and worse as you add more cores. Even if you do gain performance with hyper-threading, the task at hand might not be sufficiently parallelizable to justify the extra heat produced. This is especially true when you are talking about the lower end chips that didn't make the i7 cut and heat is already a problem.

3) 4 cores, 8 threads is a marketing nightmare when you want to sell a more expensive 6 core, 6 thread chip. How can you charge more for fewer threads and explain that to customers? Hyper-threading is easy to explain to customers only when the true cores are in multiples of 2 (and not multiples of 3).

The 8th generation is being launched in many phases. Some will be Kaby Lake Refresh, some will be Coffee Lake, some will be CannonLake, and maybe there is a Coffee Lake refresh. I wouldn't be surprised if 4 cores, 8 threads comes back to the 8th generation in 2018. But if it does, it will likely be an expensive i3 that would push me to think the i5 is the better choice.

It's #3.
 

crashtech

Lifer
Jan 4, 2013
10,556
2,139
146
Each iteration of Core has come with some small HT gains. I believe that many workloads see about a 30% gain with current iteration of HT. Sandy Bridge HT would be lucky to see 20%. That's anecdotal from my own experience though, obviously gains (or regressions) vary by application.

It could be that 4C/8T is just too close to a 6C/6T part to fit into the stack.
 
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Ajay

Lifer
Jan 8, 2001
16,094
8,106
136
The 8th generation is being launched in many phases. Some will be Kaby Lake Refresh, some will be Coffee Lake, some will be CannonLake, and maybe there is a Coffee Lake refresh. I wouldn't be surprised if 4 cores, 8 threads comes back to the 8th generation in 2018. But if it does, it will likely be an expensive i3 that would push me to think the i5 is the better choice.

If there is a Coffee Lake refresh, Intel's stock is in for a hit.
 
Reactions: Pick2

LTC8K6

Lifer
Mar 10, 2004
28,520
1,575
126
I think there are several issues at play here.

1) Intel's hyper-threading has always been fairly weak. 20% gain is about the most you can expect. That would put a 4 core, 8 thread chips at best about equal to 5 cores. So, it would be worse than the 6-core i5 parts. Although there are a few exceptions at up to maybe 30% gain, there are just as many exceptions where it hurts performance.

2) Low hyper-threading gains combined with Amdahl's law and faster turbos makes hyper-threading worse and worse as you add more cores. Even if you do gain performance with hyper-threading, the task at hand might not be sufficiently parallelizable to justify the extra heat produced. This is especially true when you are talking about the lower end chips that didn't make the i7 cut and heat is already a problem.

3) 4 cores, 8 threads is a marketing nightmare when you want to sell a more expensive 6 core, 6 thread chip. How can you charge more for fewer threads and explain that to customers? Hyper-threading is easy to explain to customers only when the true cores are in multiples of 2 (and not multiples of 3).

The 8th generation is being launched in many phases. Some will be Kaby Lake Refresh, some will be Coffee Lake, some will be CannonLake, and maybe there is a Coffee Lake refresh. I wouldn't be surprised if 4 cores, 8 threads comes back to the 8th generation in 2018. But if it does, it will likely be an expensive i3 that would push me to think the i5 is the better choice.
I don't buy much of that. 6C/12T is a multiple of three and customers have no problem with it. The 7700K will continue to fill the 4C/8T position. IIRC, HT is only ineffective in a couple of isolated instances, and even then the performance hit is negligible.
 
Reactions: Drazick

moonbogg

Lifer
Jan 8, 2011
10,637
3,095
136
Concerning 4/8 thread vs 6/6, I almost care enough to do a simulated test, which would be easy to do. I'm curious as to how they perform when compared, but honestly I'm hoping someone else cares enough to do the test. I care about 80% and someone needs to care 100% in order to trigger the necessary motivation to actually test it.
Also, I feel 6/12 just isn't enough coming from 4/8. These days, cores are being thrown at us by the bucket full and I don't see what you can do with 6 that you can't sort of already do with 4. 8/16 makes much more sense because there you have substantial differences in streaming, productivity etc, and in a meaningful way. But 6/12? That's just a weak half measure and won't help with much really.
The only reason I have gone with 6/12 in the past is because I want those extra cores/threads for the games that use them, even if they only use them a little, and I wasn't going to spend $1000 on an 8 core just to game.
Seriously, the only thing 6/12 is good for is so we have something cheaper than 8/16 to buy. That's it. These days, 8/16 is where the upgrade should be focused coming from the ancient 4/8. Coffee Lake is a stopgap chip and yet again represents Intel's laziness and lack of innovation since all they did in response to the competition was rush forward some stuff they already had cooking for much later. Intel would have waited another 10 years before delivering an 8/16 chip, but now I suspect we'll get it in a year or two.
 
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Reactions: Headfoot

LTC8K6

Lifer
Mar 10, 2004
28,520
1,575
126
Concerning 4/8 thread vs 6/6, I almost care enough to do a simulated test, which would be easy to do. I'm curious as to how they perform when compared, but honestly I'm hoping someone else cares enough to do the test. I care about 80% and someone needs to care 100% in order to trigger the necessary motivation to actually test it.
Also, I feel 6/12 just isn't enough coming from 4/8. These days, cores are being thrown at us by the bucket full and I don't see what you can do with 6 that you can't sort of already do with 4. 8/16 makes much more sense because there you have substantial differences in streaming, productivity etc, and in a meaningful way. But 6/12? That's just a weak half measure and won't help with much really.
The only reason I have gone with 6/12 in the past is because I want those extra cores/threads for the games that use them, even if they only use them a little, and I wasn't going to spend $1000 on an 8 core just to game.
Seriously, the only thing 6/12 is good for is so we have something cheaper than 8/16 to buy. That's it. These days, 8/16 is where the upgrade should be focused coming from the ancient 4/8. Coffee Lake is a stopgap chip and yet again represents Intel's laziness and lack of innovation since all they did in response to the competition was rush forward some stuff they already had cooking for much later. Intel would have waited another 10 years before delivering an 8/16 chip, but now I suspect we'll get it in a year or two.
Except if the 6/12 chip can keep up with or outrun the 8/16 chip...
 
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crashtech

Lifer
Jan 4, 2013
10,556
2,139
146
I fully expect the 8700K to trade blows in MT with "other leading processors," even those with moar cores.
 
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