Asus Strix/Crosshair VII PE Level 3 and 4 multiplier adjustments through Ryzen Master
On the Crosshair VII with the latest 2203 BIOS you can control the multiplier for PE 3 and I'm assuming PE 4 from within BIOS by adjusting EDC under PBO options after setting it to manual. However, while it allows you to adjust EDC without being ignored it will also cap EDC to what is set in BIOS while in Windows. So if you want to increase EDC with Ryzen Master from within Windows you won't be able to adjust it past what is set in BIOS.
I have just found that setting EDC to 134 in BIOS translated into a cap of 140 when using Ryzen Master in Windows. I haven't explored beyond this so I don't know if 140 is the floor or if there is a certain value that will be added to what is set in BIOS when using a value below 145. 145 is what PE 3 would normally use.
Edit the third:
Ok I've now found that although Ryzen Master will display a max value for EDC to be 140 (above the 134 I set in BIOS) it will not actually change that value above the 134 value set in BIOS. So it does appear that what is set in BIOS is the cap. Even though Ryzen Master may show a higher value for the max.
Original post below:
A little preamble: I was searching for a way to land between where the Performance Enhancers in BIOS were putting me -- something like a Level 3 1/2. My Level 3 multiplier was usually 41~41.3 and my Level 4 could be anywhere from 42.5~43.5. As you can imagine I wanted to be somewhere between those and be able to land there more consistently. Elmor and The Stilt both gave the guidance of changing the EDC value in BIOS under the PBO settings, but I've found those values won't apply when using a Performance Enhancer so I couldn't manipulate Level 3 or Level 4 that way. Both also said they would look into why that might be so I want to thank them for their help. In the meantime I have found that Ryzen Master works perfectly for changing the EDC value without needing to reboot and it can be done reactively after seeing at which multiplier your CPU boots at.
Below I will be posting some screenshots of Ryzen Master and a terrible description of my methodology.
So Level 3 boots at an EDC value of 145 (and I believe Level 4 boots at 160(actually it appears Level 4 boots at 168 or sometimes 1) and this scenario below my CPU booted with a multiplier of 41 using Level 3. Because the CPU boots at a different multiplier at times I don't believe a specific EDC value equates to a specific multiplier. How I think of it is since EDC can range from 140 - 168 making adjustments in increments of 4 you should see a new multiplier value after each adjustment. Since Level 3 boots at 145 it is using the multiplier that would fall between the 144-147 range. If you change EDC to 140 the mutiplier will drop .25 from its boot value which you will be able to see in the photos I'll post below. Aslo, a very crude text "table".
With much cooler (idle at 21*C) temps I have found that my CPU went from a multiplier of 42.5 at an EDC of 164 to a multiplier of 43 and in a separate instance 43.5 at an EDC of 168. Separate instances of adjusting the EDC from 164 to 168 created the unexpected adjustments up to multipliers at 43 and 43.5 (the highest jump to 43.5 dropped back itself to 43). Both of those increments are significantly above the previously observed steps of .25 seen previously at warmer temperatures. I will also add that the larger step in the multiplier was benchmark stable with these cooler temperatures. The CPU seems to weigh start-up temperatures more heavily than previously observed in earlier testing. All other multiplier steps with EDC increments (140-160) were in-line with previous observed behaviors. In summation: an increase to the EDC value, at its highest end, adding 4; resulted in a multiplier increase of .5 and in another instance 1. Temperature, being the observed value, was significantly different from previous testing.
Starting from a multiplier of 41 with PE Level 3 (this is a sliding scale that will change):
EDC // Multiplier
140~143 // 40.75
144~147 // 41
148~151 // 41.3
152~155 // 41.5
156~159 // 41.75
160~163 // 42
164~167 // 42.3
168 // 42.5
And now some pictures.
AMD Ryzen 2700X | Fractal Design S36 360 AIO w/6 Corsair SP120L fans | Asus Crosshair VII WiFi X470 | G.SKILL TridentZ 3636MHz @ 14-15-14-28 2x8GB | EVGA 1070 Ti SC GAMING ACX 3.0 Black | Samsung 970 EVO M.2 NVMe 500GB - Boot Drive | Samsung 850 EVO SSD 1TB - Game Drive | Seagate 1TB HDD - Media Drive | EVGA 650 G3 | Thermaltake Core P3 Case |
Last edited by nick name; 04-12-2019 at 07:49 PM.