P750DM-(G) Dsanke BIOS does not work with BGA1440 CPUs

[anassa]

4 hours ago, jjo192 said:

Yes, I just dropped to 0.800v at 1797mhz and got 80w as a test. But that is as far as I'd go. 1847mhz at 0.850v feels comfortable being that 1847mhz is what the specified frequency for the card is. Have looked at RLECViewer before just never used it but will check it out again.

So we are way off topic from the BGA1440 cpus .  . . but! I was surprised that undervolting to .850v at 1823 didn't really cut down the power much, I still saw 140~150w, then I upped it to 1950ish at around 0.950 and it pulls around 150~160 with an occasional 170w jump.  The GPU stays cool though, it keeps in the 60s to very low 70s, so I am not too worried about that. 

 

For the 8700k I set it at -140mv & 1.0v core and -110mv & 1.0v cache with 4.2mhz for all core, it is still on adaptive not static voltage and undervolt is offset. It pulled ~85w but stayed in the 70s so I am pretty happy with that. I ran a couple CB2077 benchmarks with it and CB20 to check stability and there were no issues so I think I can go lower. I was pretty surprised.

[anassa]

On 1/2/2024 at 1:33 PM, jjo192 said:

Hi, not sure if you still need the advise or not. I have a P775DM3 and have used a P750DM3. I used this for both. I am using an 8 core 16 thread mutant 1440 CPU.

 

This is the P7xxTM1 version ported to work on DM3. This gives 8 core support in the bios. I had issues with other versions breaking the Thunderbolt and USB-C ports, this does not break them. 

 

I had lots of issues initially with these. But the main thing that fixed my issue was the set the default RAM frequency in CoffeeTime to 2133mhz. Then boot initially with 1 RAM module.

 

Good luck.

 

Edit: Correct BIOS updated.

 

 

P7xxTM1.rar 3.99 MB · 3 downloads

 

@jjo192

 

What method did you use to flash this?

I tried and flashed it onto my P750DM2, using DOS usb stick and afudos but it won't flash, shows some kind of "write-protected" error and then shuts down.  It happens pretty fast so I can't really see the notification clearly. Honestly I am just trying to DOS flash it so I don't have to take it apart to get access to the bios chip.

[1610ftw]

On 1/11/2024 at 8:21 PM, jjo192 said:

80w is a bit of a guess really to be honest. I am going with it because the i9-9980HK is a 45w TDP and up to 5Ghz. Admittedly that is obviously 5Ghz on a single core and TDP doesn't mean much when it comes to this. Maybe 85w -95w, maybe lower its tough to know. I have tried looking for people who have tested the i9-9980HK but I mainly find overclocking. 

 

My other guess is the i9-9980HK will have the same breaking point somewhere around 4-4.5Ghz all core where it jumps from 70w to 120w over 1-2 multiplier increases. I am actually building a custom heatsink for the P775DM3, re-designing the back in CAD to 3D print it. It will give the laptop that back bulge you see in other gaming laptops but it's a bit of fun. 

 

I just find with CPUs, obviously the wattage does not increase in the same increments as you'd expect, so in reverse for undervolting it has the desired effect. Take a 5Ghz all core cpu at 150w, underclock that to 4Ghz all cores you would expect to get 120w at 80% of the clock, but you don't, you get it at around 100w, then add in a -100mv offset and then you look at 85w. I did exactly this on a CPU, can't remeber what it was now. I always like to find that sweet spot, where lowering the clocks start to significantly decrease the overall wattage. I do see alot of people gear towards getting the highest Ghz possible, but 3.5Ghz all cores has never given me an issue with PC gaming, emulation dependings on that %Ghz all core performance.

 

I played with the i7-8700K a while ago with my P750DM3. If I remember correctly I ran that at 3.5Ghz all cores and -100mv and it was at 55w and at 4.0Ghz all cores it was 75w ish. 4.2Ghz all core, and again it started to get up there, 4,2Ghz was around 90w.

 

 

 

 

I have seen a bunch of 9980HK and there is nothing special about them, don't buy one.

 

Generally speaking it seems that many of these CPUs take between 135 to 150W at 4.6GHz and with some undervolting. There will be an occasional outlier being below that. Best I have seen was less than 110W in a 9900K which is the one I use in one of my laptops. The best 9980HK I have seen was a bit less than 130W at 4.6 GHz. Those watts are seen when 4.6GHz first stabilize in a CB R23 run and power consumption will usually go up fast at that wattage and in many Clevos will be followed by rather quick throttling in the usual benchmarks.