hello fellow Mates, i need help on the CPU Processors.

im thinking of ordering the M15x,
but im not sure which Processor i should get
how is the i7 740qm Compared to i7 840qm?

i would like the 940xm processor but im on a budget currently but i recently saw the ES Final Version of the 940xm which is cheaper and seller claims that its the same as OEM 940xm and its very stable..
im not sure but would it be a good idea to go with the i7 740qm and use the money i saved from getting the 840qm to get the ES version of the 940xm?

thanks mates for helping.

 

if your gonna get the 940xm, then why not get the cheapest cpu available, ie the i3 330m.

there is a member here using a es 940x, he also reports that the chip is very stable.

otherwise the difference between the 740 vs 840 is not worth the price imho.

 

i just picked up a 920xm ES chip for a pretty nice price and plan on testing it out. Most people have not had any issues with ES chips and they work just like OEM chips. No warranty support but the CPU is the most stable part and should be the last part to die unless you installed it wrong or heat or stupidity. I would stick with the basic processor even downgrade lower to the i3 processor and put all that money towards the 920xm. The difference between the 920xm and 940xm is maybe i mean maybe 10% difference in performance and that is pushing it. Value wise go with the 920xm and OC it and you will be very happy. Don't put the money on the 840qm since you would be better of getting a real upgrade for the same amount of money.

Keep in mind you will need a 9 cell battery and use the ati 5850 card since it uses less power. You can upgrade to the a08 bios and run Throttle Stop to fix any issues with throttling.

 

i too bought the 920xm, very nice chip!
the real power of the extreme series is being able to have full multiplier with all cores at 100%. not to mention that the multipliers are unlocked so if you can manage the heat, you can push the multi up even higher. not possible on the non extreme series.

i agree with faiz, when i purchased the 920xm, the 940 had just come out and was double the price... considering that it's just 24x vs 25x multi... and they're all unlocked......... yeah.

 

the lowest i could go on the M15x is I7 740qm cause there are no option for me to go any lower on dell online web.

so should i go with the lowest i could get on the order and buy a aftermarket * ES* 940xm?

price are a matter to me currently

thanks mate~

 

that's what i would do. if your confident in doing the replacement yourself, this would be the way to go.

the only downside that i can see is if you want to sell it afterwards. people have said before that in the US you can't sell ES cpu's on sites etc... i live in australia where we have different stupid laws than yours... but both are just as insane...

 

Opening the CPU is the same as opening the GPU right? And replacing the CPU Is just sort of like *Plug and Play* type?
Do I need to do some sort of tuning to the bios or update any sorts of stuff?

I'm not planing to sell it after somehow if I gotten it to work..

 

yeah similar, except easier.

the cpu lock is a screw with a quarter turn or so.

make sure you have at least a05 and you should be fine. i think they added some cpu codes prior to that version... can't remember, but if it's a new system it should have at least a05.