Over the last 10 years I've found laptops throttle the processor speed in order to keep fan noise down. I prefer the fan to run noisily, and the processor to run at full speed. I've developed tried and true mods for lappies and have demonstrated their effectiveness.
I have two Lenovo W541 laptop workstations with I7-4940MX processors and discrete nVidia graphics. On one I overhauled the cooling. Copper shim between CPU and hsf, AS5 on both sides. Shims between hsf and inductors near CPU and gpu, and shim on the gpu.
Used 'thinkpad_acpi' Linux kernel module to set fan to max speed. Ran mprime (prime95 for Linux) AND Unigine Heaven, alternating, to cure the AS5. Then ran mprime. Temps were slightly high. But laptop processors tend to run hot.
The I7-4940MX is a 3.1 GHz, 4.0GHz. Turbo processor. The modded machine ran at 3GHz. continuously running mprime, for weeks. The unmodded machine with the same max-fan-speed software tweak and stock thermal-interface material, throttled to 1.7GHz. at the same running temps.
Clearly, laptop manufacturers are robbing performance off the top, by inferior cooling hardware and materials. Granted, getting the cooling mod to all fit together correctly with smooth, flat surfaces requires hours of work and materials not normally found sitting around the house.
I normally do not mod the CPU die. I abrade copper surfaces down to 1500 grit paper, and then polish with scapings from a bar of buffing compound. Everything is done on 1/2" plate glass to maintain flatness. The final mirror polish is done with the compound granules on a clean, damp cloth.
Desktop processors mostly have slightly raised corners, so smoothness is not as much of concern. You're going to get thermal-interface compond completely covering the center of the processor. The ideal is to fill the microscopic gaps between the cpu die and the hsf, but where there is metal on metal, have it be.
Metal to metal provides 100s to 1,000s times the heat transfer of thermal paste. But, on a desktop, there are more effective cooling solutions than moving air. Most user are satisfied with their laptops, because the processor doesn't run full speed long enough to make a difference.
But I enjoy tweaking, and I do processor-intensive work, like batch editing 100s of large images, video rendering, security testing, password recovery, network testing; that are all severely compromised by poor, stock laptop cooling solutions.
i have m18x R1 model with A05 unlocked bios and i try to connect ati mobility 4870 card/s.
I read ton of posts but people that seem to have similar problem with different card didn't post any solution. Case is when i connect 4870 i get black screen and 8 beeps.
When i use only integrated graphics (no cards installed) laptop is starting normally.
When i use integrated graphics (nvidia card installed as master) laptop is starting normally.
When i use nvidia card installed as master laptop is starting normally.
When i use nvidia card installed as master and ati 4870 installed as slave laptop is starting normally but in devices manager i see there is error 10 with ati card.
When i use ati 4870 card installed as master i get 8 beeps and black screen.
I tried to google for answers but unfortunatelly didn't find any. Do you know if that old card can work in m18x ? Maybe it's not supported at all? Do you have any ideas what else can i try?
For when that rubber coating on your laptop phase shifts to fly paper...
Here is what I did,
Well documented by debaucher:
The palm rest section was the biggest offender for me;
>I used a plastic spoon and nail polish remover to remove the rubber coating:
>Obviously remove as many of the various utility boards as possible.
>I left the touch pad in place because this model used thermally fused plastic rivet like pieces to hold the light pipes in place and I found it easier to mask it off.
>"FrogTape Delicate Surface" worked very well for masking off various surfaces
>I used Krylon Plastic Paint as a base coat and 'Jet Black metal flake Automotive Paint;
>With the paint still setting up I dusted various glow powders over the substrate and dusted some additional black paint to achieve some depth to the effect .
>I after the automotive paint set up I use mate clear coat the overcoat the entire surface. I personally believe glossy clear coat would not look as good.
>Adjust as needed and re-assemble.
>I Used a USB LED clamp light available ebay/amazon $10 to illuminate
Hope you enjoyed the first post...
I'm going to be upgrading my Alienware M18x R1 with a GTX770m I purchased from ebay; 770m has a Dell P/N: HW6C9 for reference. I have a couple questions about performing this upgrade:
-Is the /unlocked/ version A05 bios necessary? I am receiving 8 beeps on startup with the dell factory A05 bios installed w/ the 770m
-Is a vBIOS flash required for basic functionality and driver installs?
-If so, is there a link to a compatible vBIOS for this card, finally, a guide for installing the new vbios?
Any help is vastly appreciated, I've done some homework but I am new to upgrading MXM modules on laptops.
First I want to thank the community, who have inspired me to do this project.
I will give you guys the chance to follow me on this journey.
I hope you will all help me come up with ideas, techniques and parts that could become handy.
This modding may be possible to convert to allot of laptops.
Here is the measurement of the went hole.
77mm X 16mm
I have 2 ideas for what can be done.