another weekend and yet another round of playtime with throttlestop on my dell latitude e6500 c2d p9700. this time, im testing out dual ida mode on my cpu.
to pull it off, i had to disable eist in my laptop's bios setup so that eist mode is not locked on, then throttlestop would be free to enable and disable eist mode at will. the laptop has to be left idle with no cpu intensive programs running, then i turn on eist, set the voltage to 1.075v first then the multiplier up to 11x and then turn off eist. the multiplier then got forced stuck on at 11x even when running a stress testing program fully stressing both cores.





since i already know 1.0625v causes insta reboot of the laptop in idle when it engages ida mode earlier so i tried two steps higher at 1.0875v but that still caused insta reboots after several minutes of running a single threaded video game, so i tried 1.1v. this time its stable no matter what i threw at it: stress testing plus web surfing, stress testing plus video watching on media player classic home cinema, stress testing plus single threaded video gaming. it ran fine for hours overnight so that concludes the dual ida mode stress testing for the weekend. it ran 4°C hotter on average in dual ida mode tho compared to 2.8 ghz, 10.5x @ 1.0625v. the temps touched and exceeded 60°C so i wont be using this mode too often since i want this laptop to last and unless i really need that extra 125 mhz of a speed boost which isnt really much anyway...

i also did some testing last week to see what was the highest multiplier i could set it at the minimum vid of 1v and it was able to do 9.5x or 2.53 ghz at core vid of 1v. using 10x @ 1v causes an insta reboot. i also tested to see what voltage the cpu needs to be stable at 10x multiplier and it needed 1.025v.
so 9.5x @ 1v seems to be a good maximum performance at minimal voltage preset for this cpu in case i need a performance boost on battery without raising the voltage and consuming the battery much faster.
so i guess this is the performance table or chart of this c2d p9700 2.8 ghz (stock vid 1.1625v) penryn cpu:
2.53 ghz => 9.5x @ 1v
2.66 ghz => 10x @ 1.025v
2.8 ghz => 10.5x @ 1.0625v
2.93 ghz => 11x @ 1.1v
wow! thats a really nice matching number there... 11x @ 1.1v lol! haha!


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