[SOLVED] i9 9900k benchmark scores lower

[SteelSh0t]

Hi,
CPU - i9 9900k
Mobo - Aorus Z390 Master
RAM - 8 GB x 2 sticks Gskill 3200 Mhz RAM
PSU - Seasonic S12II 620
GPU - GTX 1080 Ti

I bought i9 today and the motherboard has 2 slots of 8 pin cable, but my psu only has 1 x 8 pin cable, so I connected it and ran the pc.

While running benchmarks, the clock speeds don't go past 4.7 Ghz even at full load and I am getting somewhat lower bench scores compared to what other websites/ youtube channels have posted at 5 Ghz.

Cinebench -

https://imgur.com/a/6PV2a3L

Geekbench - https://browser.geekbench.com/v4/cpu/11130336

Also, I had clicked on the OC button on the motherboard and ran bench and after running 2 benchmarks on cinebench, Windows started giving BSOD but while in OC, clocks reached 5.16 Ghz

So, how can I get clocks to 5 Ghz on turbo?

 

[stdragon]

Per the MB manual, it reports system instability can occur if you don't have all power plugged in. Though frankly, I wouldn't think you'd need it unless you're feeding all PCIe slots power to every card plugged in - hypothetically. But perhaps the CPU VRMs want it??

I'd ask ask Gigabyte their opinion on the matter before replacing your PSU.

 

[kerberos_20]

second 8pin is for overclocking

 

[jankerson]

Hi,
CPU - i9 9900k
Mobo - Aorus Z390 Master
RAM - 8 GB x 2 sticks Gskill 3200 Mhz RAM
PSU - Seasonic S12II 620
GPU - GTX 1080 Ti

I bought i9 today and the motherboard has 2 slots of 8 pin cable, but my psu only has 1 x 8 pin cable, so I connected it and ran the pc.

While running benchmarks, the clock speeds don't go past 4.7 Ghz even at full load and I am getting somewhat lower bench scores compared to what other websites/ youtube channels have posted at 5 Ghz.

Cinebench -

https://imgur.com/a/6PV2a3L

Geekbench - https://browser.geekbench.com/v4/cpu/11130336

Also, I had clicked on the OC button on the motherboard and ran bench and after running 2 benchmarks on cinebench, Windows started giving BSOD but while in OC, clocks reached 5.16 Ghz

So, how can I get clocks to 5 Ghz on turbo?

You need a new PSU.... Like NOW.... It is critical.

Some thing like the following and the 750W, will have all the correct power connections you need. Most 650W and lower PSU's won't have the connections you need.

Seasonic Focus Plus (Only the plus will have the CPU connections)
EVGA G2
Corsair RMX