i5 8400 Turbo speed not what its supposed to be.

[Ham-slam]

i5 8400

1070 ti

16gb ddr4 2666

 

Hi! i5 8400 is supposed to be 2.8/3.8 GHz, for some reason, userbenchmark shows that mine is at 2.8/3.1 GHz. Ive gone to bios and turbo has always been on.

https://gyazo.com/4c872247ba0a8b54db2d674eb6a1bfda

Ive also made sure that cores arent synced or whatever so that they all run at the same speeds in bios.

 

FYI, this is the first time I've ever been in bios, but I'm 99% sure that turbo mode is on. 

My i5 8400 benches are at 70-80%, average bench is 89%, also when looking at others benchmarks, mine is the only one that says 2.8/3.1 instead of 2.8/3.8 (for i5 8400)

[Princess Luna]

We will need your full spec list and if you can show us your CPU-z while the CPU is being stressed that's all helpful information.

[Fasauceome]

All core is not 3.8, it's much lower. One core is 3.8. although, Intel ark lists it as 2.8/4.0 so now I'm not sure what the info here suggests.

[Ham-slam]

i5 8400

msi 1070 ti 8gb gaming

Hyperx 2x8gb ddr4 2666

Asus prime B360M-A

2x case coolers 

650W psu

Boot 120gb crucial m500

Storage wd green 1tb 

What other speccs do u need? 

Also whats the best way for me to stress CPU for this purpose?

 

 

[Jurrunio]

userbenchmark not accurate in displaying clock speeds, better read with other software like CPU-Z or Afterburner while stress testing.

 

1 minute ago, fasauceome said:

All core is not 3.8, it's much lower. One core is 3.8. although, Intel ark lists it as 2.8/4.0 so now I'm not sure what the info here suggests.

All core is 3.8, single core is 4

[Princess Luna]

What is the PSU?

 

Download both CPU-z and Cinebench 15

[Fasauceome]

Just now, Jurrunio said:

All core is 3.8, single core is 4

That makes more sense

[Ham-slam]

Silver power sp ss650 650W PSU

[Princess Luna]

2 minutes ago, fasauceome said:

That makes more sense

Here people drew it to make sense to you:

[Ham-slam]

But why would it show mine as 2.8/3.1 and everyone elses as 2.8/3.8?

 

[Fasauceome]

1 minute ago, Princess Cadence said:

Here people drew it to make sense to you:

Too bad Intel doesn't put these on ark

[Ham-slam]

https://gyazo.com/b16b895961ce3c9038dce0805ad06014

 

Pressed stress cpu, idk what this is but hope u can make something out of it.

[Firewrath9]

11 minutes ago, fasauceome said:

All core is not 3.8, it's much lower. One core is 3.8. although, Intel ark lists it as 2.8/4.0 so now I'm not sure what the info here suggests.

all core is 3.8. source: cinebench all core on my 8400 rig is 3.8 ghz.

[Ham-slam]

https://gyazo.com/581db630db5489cc7d28631e07100751 

 

When playing pubg with ultra at 100-120 fps

 

 

[Ham-slam]

Core speed never goes above 3099 Mhz

[STellARis]

I'm pretty sure it will boost properly on Z series motherboard. If you have friend with Z370 or Z390 motherboard you really should test that case.

[Ham-slam]

Basicly whatever i do it sits on 3.05 ghz

[EspinalAndres]

Try to check bios, so you can set the multiplier to the max. Here's mine at idle.

[unclewebb]

Download ThrottleStop from TechPowerUp, click on the FIVR button and make sure your Turbo Ratios are set correctly.  There might be a problem with your bios.  From top to bottom you should see 40, 39, 39, 39, 38, 38.  You also need to have at least the C3 C state enabled to achieve the 40 multiplier.