RMclock and HP 8510P

Hi guys,

i´ve recently have read a little in the undervolting CPU and overclocking ATI GPU thread, and i´ve thought i´d give RMClock a try.

Since have not done any undervolting yet, i thought maybe some of you guys with the 8510P already have underclocked your 8510P with a T7700.

Actually i only wanna change the voltage settings for battery mode so i have a little more battery up-time. i have found one setting for max power with the t7700. it is supposed to run at 1.0125V , but as soon as i make this voltage setting active my computer freezes.

i am not sure if i want to go though all this voltage testing, especially not when i do not gain very much battery time.

what do you guys think about rmclock ? is it worth the trouble of testing stability on different voltage levels ?
and if you are having positive experiences with rmclock, how about your settings ?

i´m curious if some people actually are using rmclock, since the 8510p already has a great battery runtime.


looking forward to your thoughts

 

How is your battery life like?

I was actually really lazy and couldn't be bothered with all the testing so I tested each voltage for 5 min... I hope flipfire wont see this or he will hit me or shout at me...LOL If it freezes the chances are it is too low. I have also locked the CPU on the lowest multiplier whilst on battery, it is fast enough anyway.

Disclaimer: Listen to flipfire's advice as it is the safest route for UV'ing. I am a bad example.

 

well, my battery life is great. when working with the creative suite my processor has something to do, so i think with 3/4 of screen brightness i have around 2-2.5 hours of work.
typical websurfing, light tasks with 3/4 of max screen brightness gives me around 3-3.5 hours.
when i am rendering an image with mental ray or maxwell render ( cpu load 100 % on both cores ) i have roughly 1.5 - 1 3/4 hours / 2 hours when i put the screen brightness to min level.

overall this is already quite good, but i´d like to see if there are some extra 10 % of battery life.

well , that makes me a lazy guy too... i guess ...

well, lets see what flipfire says about the voltage testing....

 

"Supposed" by whom? Each CPU has slightly different characteristics and the Intel datasheet has big voltage ranges. Maybe someone somewhere has a T7700 which will run full speed at 1.0125V, but around 1.10V is a safer bet. You may need more. My T7300 needs about 1.05V at 2GHz and as the speed increases then the voltage needed to keep all the electrons behaving properly also increases.

If your computer BDODs, freezes or shuts down then the voltage is too low. And when you have found the voltage at which you computer is stable at full CPU load, then go up a couple more steps to provide a safety margin.

John

 

thanks for that info, mate.
i have read about some different steppings for the C2D, and i have the one that supports 0.85V. so basicly that means most likely that i should not rely on someone elses RMclock settings for the t7700.

well i guess i will have to test it much longer then. since i sometimes do have some really processor intensive tasks the settings should be bulletproof. it would be a real shame when a rendering or a simulation quits after like 2 or three hours of CPU-time.

what would you guys say is a safe test with wprime for a "really" bulletproof voltage setting ? how long should i run wprime ?

thanks for your answers so far.

 

one thing undervolting has done is brought down temps . i now don't go over 60-64 c while running wcg boinc , before temps were at 70-74 c . that alone is worth the time setting it up .
Good luck !

 

well, i think i´m making some progress with my profiles.

right now i have:

superlfm at 6 x 0.85V
normal(3) at 8 x 1.125V
normal(5) at 10x 1.125V
normal (7) at 12 x 1.150V
ida ( 8) at 13 x 1.30V

hope there is still some improvement...

another thing i have just seen and that really bothers me right now is my graphics card.

i had my 8510P sent in for repair and the repair guys installed the latest bios for the 8510P. What i have seen now is that a new graphics bios is included also, and it seems HP or ATI has made a mistake concerning the power states for the card.

Code:

ATI PowerPlay (BIOS)	
State #1	Grafikprozessor (GPU): 500 MHz, Speicher: 600 MHz  (Boot)
State #2	Grafikprozessor (GPU): 500 MHz, Speicher: 600 MHz
[B]State #3	Grafikprozessor (GPU): 125 MHz, Speicher: 405 MHz[/B]
State #4	Grafikprozessor (GPU): 600 MHz, Speicher: 600 MHz  (UVD)
State #5	Grafikprozessor (GPU): 500 MHz, Speicher: 600 MHz
State #6	Grafikprozessor (GPU): 300 MHz, Speicher: 405 MHz  (Limited Power)

the powersaving state s3 for the Card is at 125 MHZ ( core) / 405 MHZ (Ram).
if i remember that correctly i had a much lower clocks for the ram in the powersaving mode, i think it was like 125 MHZ / 250 MHZ (?)

i guess this must be a mistake. is there still someone here with a bios that is older than F.13 ? can you tell me what your settings for powerstate s3 for the hd 2600 is ?

if i am right, i guess we should contact HP about this "bug".

 

I use the Prime95 torture test. Open RMClock and set it to the default voltage. Then start up Prime95 and select the torture test. Then, once the CPU is nicely hot (use RMClock's monitoring page to see the temperature) drop the voltage of the highest multiplier by a few steps. Wait a few seconds. If it is still running, go down another couple of steps. Remember the voltage (best to write it down). Keep repeating until the computer BSODs / hangs / goes off. Then you found the voltage at which it will quickly crash. Two or three steps above that is probably safe and the easy way to find that out is to leave the torture test running overnight at what you think is the OK voltage.

John

 

I thought it was about 250mhz with the older bios so I was surprised too when i saw 405mhz after i flashed it with the new bios. I manually underclock it with AMD clock utility now if I am in need of battery life. (125/200)

 

so it is a bug then.

i have just started a thread in the hp support forums about this bug. i do hope the hp techs will read that one and take care of it. i was searching for a direct contact to the techs, but i found nothing.

 

where do i fin d these values . I'm still on bios f.0f

 

you can check for example with everest.

look at the gpu settings. there you will find the clocking behavior for the different power states.