Should my cpu clocks lower with EXPO RAM enabled?

[Slackjaw190]

I assumed enabling EXPO would increase system performance, but it seems to be having the opposite effect on my system.

Enabling EXPO has caused my CPU to operate at a slower speed of approximately 120 MHz (4850 MHz vs. 4970 MHz), leading to a 400 point decrease in Cinebench R23 scores. Is it expected to have lower CPU clocks running overclocked RAM?

CPU = Ryzen 7 7700
RAM = Corsair Vengeance 32GB EXPO (2X16GB) DDR5 PC5-48000C30 6000MHz Dual Channel
MB = MSI B650 GAMING PLUS WIFI.

CPU settings are standard, other than the -30 curve optimiser, but I've tried resetting to stock, and I still get lower clocks with EXPO enabled.

 

[Slackjaw190]

My uneducated guess would be that the increased power going to the I/O caps the total power budget, does it look like that's happening?

So far as I'm aware, Cinebench is not bothered about RAM speed, so faster memory doesn't give a higher/lower score.

How do I check?

 

[Slackjaw190]

I guess it's power limited at 88W, so the CPU and RAM share power?

I'll try upping the power limit slightly

 

[Slackjaw190]

I think you're probably right, if I use 7700X TDP values the CPU clocks to roughly the same value if I have EXPO enabled or not.

I'm not going to notice the difference tbh, and I'll just go back to losing a few MHz with EXPO enabled and stock 7700 TDP values.

Thanks for your help

 

[Slackjaw190]

Sorry that was HWMonitor not HWiNFO, HWiNFO does show more info, but I'm not sure what I'm looking for

 

[Slackjaw190]

With EXPO disabled

 

[Slackjaw190]

Is this better, I went straight to 1.1v and seems stable - stock 7700 power settings. I guess dropping the SoC voltage frees up power for the cores to use?