Question Ram not running at speeds advertised

[Rxschjust]

MY Gskill trident 4266mhz Ram is only running at 2133mhz and ive tried enabling DCOP profile which just shuts down the Pc it tries to reboot 3/4 times then just Turns off and returns Bios settings back to default if anyone could help that would be great

Thanks in Advance

 

[rgd1101]

full system spec?

 

[thx1138v2]

Three things determine max RAM speed in a system: internal CPU memory controller, the RAM itself, and the motherboard. All three must support the maximum speed you are trying to attain, so a deficiency in any one will reduce the speed the default speed. It doesn't matter what speed is advertised if all three items don't support it.

 

[Rxschjust]

Ryzen 9 5900x
G.SKILL 32GB DDR4 TridentZ RGB 4266Mhz PC4-34100 CL17 1.50V Dual Channel Kit (2x 16GB)
MSi Ge force 3070ti Suprim x
Asus ROG Strix B450 - f Gaming II
Nzxt Kraken Cooler
Western Digital 1TB SSD

 

[rgd1101]

ROG STRIX B450-F GAMING II | Gaming motherboards｜ROG - Republic of Gamers｜ROG Global

ROG Strix B450-F Gaming II ATX motherboard features a robust power delivery, optimal cooling controls, AI Noise-Canceling Microphone, AI Networking and cyberpunk-inspired aesthetics.

rog.asus.com

4400(O.C)/4000(O.C.)/3866(O.C.)/3600(O.C.)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory

try the other supported speed?

 

[Rxschjust]

ROG STRIX B450-F GAMING II | Gaming motherboards｜ROG - Republic of Gamers｜ROG Global

ROG Strix B450-F Gaming II ATX motherboard features a robust power delivery, optimal cooling controls, AI Noise-Canceling Microphone, AI Networking and cyberpunk-inspired aesthetics.

rog.asus.com

4400(O.C)/4000(O.C.)/3866(O.C.)/3600(O.C.)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory

try the other supported speed?

I tried to use the 4000mhz one and still same outcome

 

[rgd1101]

what other memory profile does it have? tested them all?

 

[BFG-9000]

MY Gskill trident 4266mhz Ram is only running at 2133mhz

Um, perhaps I do not understand but is this a trick question?
"DDR4-4266" memory may be 4266MT/s but actually runs at 2133MHz, hence the "DDR." So when you set it for "4000" it should actually run at 2000MHz

 

[Kona45primo]

With Ryzen it's important to have your RAM speed on a 1:1 speed with the the infinity fabric (fclk)on the cpu. 3600mhz will allow for 1800mhz fclk which is pretty common. 3800mhz will allow for 1900mhz which is a roll of the dice if it will work. 4000mhz+ is uncommon.

I'd shoot for 3600-3800mhz for the ram, anything above that will be unlikely. If the FCLK is out of sync you'll be losing significant performance, even with very high ram speed.

Once you settle on a stable speed you can potentially continue to adjust timings for additional performance at that speed. But it does require a fair amount of trial, testing to see what works without errors.