Originally Posted by wingman99
The i7 8700k will run cooler for about the same performance as the i7 9700k.
Untrue. I owned both. 9700k will run cooler. 9700k is soldered. 8700k will hit the thermal ceiling with same cooling almost instant when running Aida64
Delidding 8700k may or may not be about the same. Depends on your voltage and overclocks.
I had better thermals with 9700k with overclock (same voltage). BUT...I had a golden 8700k that overclocked at lower temps, with lower voltage of about 1.26v to 5.0 ghz
If you want better thermals with no delidding/liquid metal, then go for 9700k
Originally Posted by mardon
Well got all the bits together.
Seems the 8700k does need some voltage to hit 5ghz. I'm at 1.345v at the moment. Think I'm close to getting stable. It passes benchmarks, cinebench, firesrike and normal Intel burn test. Fell over after 6 passes on very high.
I'm wondering if rolling the Dice on the 9700k (buyer happy to accept £280) is worth the gamble?
Do 9700k's hit 5ghz with less voltage on average?
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It will require higher voltage, but it will beat 8700k in a lot of gaming stuff, because of true 8 cores. It will perform slightly less in rendering tasks though, because of no hyperthreading
9700k is about 19% less powerful than 9900k in per core performance, 8700k about 24% weaker than 9900k.
I had 8700k, 9700k and now own 9900k.
9900k is a definite winner, 9700k is close enough second. 8700k feels like chip from another family. Hard to explain, but I would only go for 9900k because I saw limitation in both 8700k and 9700k.
9700k is more solid, but it doesn't have hyperthreading. Thus lacking rendering power of 8700k and 9900k. BUT...I would not buy 8700k, because I saw R6 Siege utilization almost 100% of that cpu at times.
100% utilization causes stutter. No stutters with 9900k. 9700k gives more headroom than 8700k for gaming, but it's right on the edge for modern gaming. 6 cores seem to be not enough for many games (for flawless gaming experience) even if you have a great GPU. As soon as CPU hits 100% you will see micro stutter.