4 ms·

I didn't touch the clock speeds from whatever the defaults are. Given the reported thermals, I'm tempted to go the other way and underclock the system. Losing ~

I didn't touch the clock speeds from whatever the defaults are. Given the reported thermals, I'm tempted to go the other way and underclock the system. Losing ~5% performance to get a 50% reduction in power consumption would be a great deal if I can get it. That said, I did activate EXPO on my 6000 MHz RAM sticks - which at first caused the system to hard freeze and nothing short of a CMOS clear could bring it back. But in the end, re-seating the RAM sticks seems to have sorted that one out and its running at the full rated speed now.

Trellmor 4y ago
EXPO breaks S3 sleep at least in some cases. A few motherboard vendors even disable the S3 state when EXPO is enabled. https://old.reddit.com/r/Amd/comments/xwfadm/when_expo_is_enabled_your_pc_can_not_go_to_sleep/ https://old.reddit.com/r/Amd/comments/xwfadm/when_expo_is_en...
hesdeadjim 4y ago
I had the EXACT same problem. I left my machine running for 30 minutes after turning on EXPO after hearing about “training”. Hard reboot, CPU code error… uh oh. Clear CMOS, boots again at 3000mhz. Decide to install Windows first, and then after I turned EXPO back on and have had zero issues at full rated speed. Even ram memtest to be sure. Im running a MSI MPG x670e Carbon Wifi for what it’s worth.
- josephg 4y ago
  Seems weird that installing windows fixed a ram issue. I wonder if there's a launch day CPU microcode update or something that windows installed that made a difference? I'm also using a MSI board FWIW: MAG B650M Mortar (WIFI)
cycomanic 4y ago
The German CT magazine tested the Ryzen 7000 recently and they said the eco mode (or similar name) reduced the power consumption significantly (IIRC <65W after) with only modest (<5%) performance drop. IIRC they also said not to disable EXPO.
- scns 4y ago
  The 7950X at 65W TDP delivers 12% more than the 5950X at 105W TDP. The 7700X at 65W TDP delivers 16% more than the 5800X at 105W TDP and 38% more than the 5700X at 65W TDP. 88W PPT = 65W TDP And they can be undervolted as well. Source: https://www.computerbase.de/2022-09/amd-ryzen-7950x-7900x-7700x-7600x-test/2/#abschnitt_effizienz_bei_reduzierter_tdp_inkl_ecomode https://www.computerbase.de/2022-09/amd-ryzen-7950x-7900x-77... edit: added 5700X

Trellmor 4y ago

EXPO breaks S3 sleep at least in some cases. A few motherboard vendors even disable the S3 state when EXPO is enabled. https://old.reddit.com/r/Amd/comments/xwfadm/when_expo_is_enabled_your_pc_can_not_go_to_sleep/ https://old.reddit.com/r/Amd/comments/xwfadm/when_expo_is_en...

hesdeadjim 4y ago

I had the EXACT same problem. I left my machine running for 30 minutes after turning on EXPO after hearing about “training”. Hard reboot, CPU code error… uh oh. Clear CMOS, boots again at 3000mhz. Decide to install Windows first, and then after I turned EXPO back on and have had zero issues at full rated speed. Even ram memtest to be sure. Im running a MSI MPG x670e Carbon Wifi for what it’s worth.

josephg 4y ago
Seems weird that installing windows fixed a ram issue. I wonder if there's a launch day CPU microcode update or something that windows installed that made a difference? I'm also using a MSI board FWIW: MAG B650M Mortar (WIFI)

cycomanic 4y ago

The German CT magazine tested the Ryzen 7000 recently and they said the eco mode (or similar name) reduced the power consumption significantly (IIRC <65W after) with only modest (<5%) performance drop. IIRC they also said not to disable EXPO.

scns 4y ago
The 7950X at 65W TDP delivers 12% more than the 5950X at 105W TDP. The 7700X at 65W TDP delivers 16% more than the 5800X at 105W TDP and 38% more than the 5700X at 65W TDP. 88W PPT = 65W TDP And they can be undervolted as well. Source: https://www.computerbase.de/2022-09/amd-ryzen-7950x-7900x-7700x-7600x-test/2/#abschnitt_effizienz_bei_reduzierter_tdp_inkl_ecomode https://www.computerbase.de/2022-09/amd-ryzen-7950x-7900x-77... edit: added 5700X