i7-7700 vs i7-7700k

[SHOOKSHOOKe]

I accidently bought i7-7700 and already used it. So this comes from my own regret.
Is 7700k that much better than 7700? price difference is only about 30$.
(I am not into overclocking)

[Rumpelcrutchskin]

Автор сообщения: Vagarious Reveler

Автор сообщения: LoganTNZ

I mean, the 8600k is on par, and sometimes beats, the 7700k. And, in australia, its 150 dollars less. A 30 dollars air cooler should be all good for it aswell.

Then i5-8600k is better than normal 7700? it is about 50$ cheaper in here.

i5-8600K and all 8000 series need Z370 motherboard.

[SHOOKSHOOKe]

Автор сообщения: Rumpelcrutchskin

Автор сообщения: Vagarious Reveler

Then i5-8600k is better than normal 7700? it is about 50$ cheaper in here.

i5-8600K and all 8000 series need Z370 motherboard.

Ye I know. Thsnks anyway :)

[Duck]

Автор сообщения: Rumpelcrutchskin

Автор сообщения: Vagarious Reveler

Then i5-8600k is better than normal 7700? it is about 50$ cheaper in here.

i5-8600K and all 8000 series need Z370 motherboard.

Wait for b360 :)

(Inb4 "buy a ryzen")

[Bad 💀 Motha]

Yes but even though 8600K might be cheaper for you, Z370 Motherboard I doubt will be, and that is a must for an 8th Gen CPU.

[Astro_80 (WASH YOUR HANDS!)]

Автор сообщения: Vagarious Reveler

I accidently bought i7-7700 and already used it. So this comes from my own regret.
Is 7700k that much better than 7700? price difference is only about 30$.
(I am not into overclocking)

If you're not into overclocking, the obvious choice is the 7700.

[PepuroniPeetsa]

You might not notice much of a difference. The K model has a slightly higher stock clock speed.

[tacoshy]

stock clocks for 7700 is 3.6GHz and for the 7700K 4.2GHz.

The 4.5GHz Turboboost for the 7700K is only on one core while 3 cores are deactivated to transfer the TDP to allow that one core to run higher.
5.0GHz is not achieved easily even not with good cooling. In fact most of my CPU's barely made 4.8 and failed on 4.9 already. Only 8 of about 60 CPU's I OC'ed made it to 5.0GHZ while only two made to 5.1 and one to 5.2GHz and that on cost of "high" 1.395V with AVX offset of 3 while I need 1.415V to run it at 5.3GHz stable in both P95 1344K and Aida 64.

However the performance boost of the CPU is great in that OC'ed state even slaughtering the 8700K at stock default in most benchtests (which can easily been OC'ed at that level too and then taking the lead back).


Even if you dont want to OC the 7700K is the ebtter choice for the betetr performance by default, the ability to OC to get more performance out later and therefor having a far betetr reseel value (sold 1 7700K used 2 weeks ago for 343€ while new prices where at that time 360€).

[Malygos]

Автор сообщения: tacoshy

stock clocks for 7700 is 3.6GHz and for the 7700K 4.2GHz.

The 4.5GHz Turboboost for the 7700K is only on one core while 3 cores are deactivated to transfer the TDP to allow that one core to run higher.
5.0GHz is not achieved easily even not with good cooling. In fact most of my CPU's barely made 4.8 and failed on 4.9 already. Only 8 of about 60 CPU's I OC'ed made it to 5.0GHZ while only two made to 5.1 and one to 5.2GHz and that on cost of "high" 1.395V with AVX offset of 3 while I need 1.415V to run it at 5.3GHz stable in both P95 1344K and Aida 64.

However the performance boost of the CPU is great in that OC'ed state even slaughtering the 8700K at stock default in most benchtests (which can easily been OC'ed at that level too and then taking the lead back).


Even if you dont want to OC the 7700K is the ebtter choice for the betetr performance by default, the ability to OC to get more performance out later and therefor having a far betetr reseel value (sold 1 7700K used 2 weeks ago for 343€ while new prices where at that time 360€).

https://siliconlottery.com/collections/kabylake/products/7700k50g

According to their testing a good amount of theirs hit 5 so its not too bad but the voltage they have listed is terrible for that and wouldnt waste time on it. Ive had 3 and all have reached 5 with no offset and under 1.4 volts of course thats all up to luck but i dont think its as bad as people believe it to be

[upcoast]

Автор сообщения: Cloud Boy

official intel website says i7 7700 (non K) Turbo Frequency 4.2 Ghz, Base Frequency 3.6

https://ark.intel.com/products/97128/Intel-Core-i7-7700-Processor-8M-Cache-up-to-4_20-GHz

Max Turbo Frequency
Max turbo frequency is the maximum single core frequency at which the processor is capable of operating using Intel® Turbo Boost Technology. Frequency is measured in gigahertz (GHz), or billion cycles per second.

Right from their website ^ 4.2GHZ is a single core thus making thew i7 7700k the better buy https://ark.intel.com/products/97129/Intel-Core-i7-7700K-Processor-8M-Cache-up-to-4_50-GHz

TBH, I see no problem with Z board pricing for the i5 8400/8600k.

Ram and GPUs will suck up your $$$ these days.

[vadim]

Автор сообщения: tacoshy

The 4.5GHz Turboboost for the 7700K is only on one core while 3 cores are deactivated to transfer the TDP to allow that one core to run higher.

Cores cannot be "deactivated". Such functionality doesn't exist (and cannot exist because of obvious reasons).

[tacoshy]

Автор сообщения: vadim

Автор сообщения: tacoshy

The 4.5GHz Turboboost for the 7700K is only on one core while 3 cores are deactivated to transfer the TDP to allow that one core to run higher.

Cores cannot be "deactivated". Such functionality doesn't exist (and cannot exist because of obvious reasons).

Of course they can:

C3 sleep state
In that state they do nothing like they are deactivate and that state is needed to transfer TDP so that turbo boost can get into effect in the first place.

[IceFoxX]

Автор сообщения: tacoshy

Автор сообщения: vadim

Cores cannot be "deactivated". Such functionality doesn't exist (and cannot exist because of obvious reasons).

Of course they can:

C3 sleep state
In that state they do nothing like they are deactivate and that state is needed to transfer TDP so that turbo boost can get into effect in the first place.

Did you read it before posting?

[vadim]

Автор сообщения: tacoshy

Of course they can:

C3 sleep state
In that state they do nothing like they are deactivate and that state is needed to transfer TDP so that turbo boost can get into effect in the first place.

C-states has nothing with "deactivating". These are just power saving modes. If you interesting to know more about them you can read appropriate datasheet. Like this: https://www.intel.com/content/www/us/en/processors/core/8th-gen-processor-family-s-platform-datasheet-vol-1.html
Look at article 4.2 "Processor IA Core Power Managemdent" to fully understand how these states work. There are only 4 pages of test.

[Monk]

The other cores while using turbo boost are effectively disabled.

buying now, a z370 and a 8600k would make much more sense than a 7700, as you have the 7700 already and as such (hopefully a z270 board) going for the 7700k for a small price increase would be well worth it, even in a non z series board, it runs considerably faster and when it comes to upgrading, K chips hold their value ALOT better than their non K brethrens, often Beng worth near double.
I'd return the chip and get the 7700k.

[vadim]

Автор сообщения: Monk

The other cores while using turbo boost are effectively disabled.

Sorry, but no. Turbo boost 2.0 activated when other cores don't use too much power. So, when they in C7 state mostly. But core can go to C0 state by itself (say, when interrupt occurs). Such transitions happen all the time and they don't cancel turbo mode immediately.
Not power state itself directly affects turbo boost (2.0, I didn't read docs about 3.0 yet), only power consumption.