CPU 4.8GHz vs 4.9GHz

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Commendable
Oct 13, 2016
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So i'm testing my 8700K on cinebench

Im doing a 4.8GHz with 1.280V on a score of 1550.

THen im doinga 4.9GHz at 1.310V at score of 1568 not much of a difference

Any other impact this could be affected by?
 
Solution
ingtar33
If you're not getting linear scaling in benchmarks that usually means there is something else occuring. Either your cpu is overheating and throttling (Intel CPUs will do that without telling you) or perhaps you're being bottlenecked in that benchmark by something else (perhaps ram speeds/timings); or your overclock isn't stable.

Pick one, one of those is probably right.
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ingtar33

ingtar33

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Dec 17, 2012
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If you're not getting linear scaling in benchmarks that usually means there is something else occuring. Either your cpu is overheating and throttling (Intel CPUs will do that without telling you) or perhaps you're being bottlenecked in that benchmark by something else (perhaps ram speeds/timings); or your overclock isn't stable.

Pick one, one of those is probably right.
 
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Solution
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luckymatt42

Upstanding
May 23, 2018
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Run the test in each configuration at least 3 or 4 times...scores do vary, may be that you got a extra good result at 4.8 but an extra low result on 4.9 just by sheer bad luck. Doing multiple runs will give you a better picture. (But ya, a 100mhz difference isn't going to give you huge gains in any case)
 
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P

Profix

Commendable
Oct 13, 2016
41
1
1,530


- Motherboard: Asus Maximus X Hero 1151socket
- Graphics Card: GeForce GTX 1070 8GB Fabric OC
- CPU: Intel Core i7-8700K ( 4.8GHz OC )
- CPU cooler: Corsair Hydro H115i PRO RGB
- Memory: Corsair Vengeance RGB DDR4 3600MHz 16GB
- Main hard drive : Samsung 970 PRO 512GB PCIe M.2 SSD
- Secondary hard drive : Corsair Performance Pro 240GB SSD
- PSU: Corsair HX750, 750W PSU Platinum
- OS: Windows 10 Pro 64bit

That's my PC specs, my ram has an CL18 18-19-19-39.

At my 4.8GHz overclock i've runned for 10hours straight prime 95, and one night 8hour OCCT both no crash issues at that clock.

VCSAA 1.15
VCIOO 1.15
VCore 1.280
CPU cache: 44
Ram manualy set, with same timings and the Voltage 1.350 which is on the ram sticks stated.

If this clock is my sweet spot i will stick with that for sure, was just wondering if pushing 4.9 maybe i need to change some settings not quiet sure. on VCIOO VCSAA voltage upgrade or smth or the cache etc.



 
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Profix

Commendable
Oct 13, 2016
41
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Sry i'm a bit noob here, what will overheat? u mean the CPU wants more voltage like 1.3V or the VCIOO VCSAA :D

 
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Profix

Commendable
Oct 13, 2016
41
1
1,530


Oh yeah i tried a cinebench just for fun 5.0GHz i get bluescreen with 1.350Volt, needed up to 1.380V to get no bluescreen in just cinebench..

But i don't rly understand why my Cinebench score on my stable 4.8GHz clock is just arround 1530-1555.

When i see people with a 4.7GHz clock at 1540scores and so on.
 
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P

Profix

Commendable
Oct 13, 2016
41
1
1,530


Not rly sure with the undervoltaging thing tho.

People on forums said they obtained like 1580scores with 4.7GHz

Wherever im stuck arround 1555 on my 4.8Clock and 1.280Volts, ive even tried raised the Vcore to over 1.350 and still the same results in the score :p. I did try a 4.9Clock raising Vcore to arround 1.315, obtaining 1598score at Cinebench.

Cinebench im talking about in the scores, my bad :).

 
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