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[revised by svl7, 01/22/12] Here are some unlocked versions of the M18x BIOS, this means all the hidden BIOS menus are now available. This allows you to further tweak and overclock your machine, but some settings are very advanced and not meant to be touched by the average user, so use it with care and common sense. Unfortunately quite some of the links which were previously posted here are now invalid due to what happened with megaupload. I will try to recollect all the files and get fresh links, so I can provide the complete collection. Here's what's available for now: [unlocked] M18x BIOS A03 [unlocked] M18x BIOS A04 both modified and provided by Ahmed from BIOS-Mods, a big thanks to his amazing work! Consider buying him a drink for all the effort! [unlocked] M18x BIOS A05 modified by @svl7 After flashing, go to the BIOS menu and load the default settings to prevent possible issues. As always with such mods, you are responsible for what you do to your system, use at your own risk. M18x - A05 unlocked.zip

Also look into the E6430 heatsinks. They may be identical but for half the price off of ebay.

How is this cheaper than the EXP GDC? This costs 113 USD vs. EXP GDC which was 89 USD both with PSU and shipping to Finland.

Do not go dGPUless just for heat reasons if you get a quad core. For the E6520 Dell would put in thicker heatpipes and faster fans if you got a dGPU and quad core. They probably do the same thing on the later series. For E6520: no dgpu + dual core = 6mm heatpipe + 3.1cfm fan. no dgpu + quad core = 8mm heatpipe + 3.1cfm fan. dgpu + dual core = 6mm heatpipe + 3.1cfm fan. dgpu + quad core = 8mm heatpipe + 5.0cfm fan. The top end quad + dgpu config had the best cooling hands down. If still concerned over heat, just don't use the dgpu and you'll have very good cpu cooling.

I found the direct culprit that was preventing my 880m from down clocking when under 0% load. Disable Nvidia Capture Server Proxy in your startup. This is Nvidia's shadow play and for whatever reason it pushes the clock to 100% under 0% load. It still takes 20 seconds after boot up to downclock but works everytime. If this worked for you then I would be happy if you let me know.

Looks like a power issue to me. But try to set the link to Gen1, first. If that doesn't solve the issue, I'd try to redo the wiring of the Xbox PSU.

Let's see how it goes in the well-known grass scene!

Well after looking through the forum, it seems GTX 660M or 680M is the probably have no compatibility issue... i will go to for that two choice but finding it at a affordable price is really hard i'll try to update as soon as possible if i already get the GPU card

For the driver installation see the post of @J95 above. About the white screen issue - that's just a matter of drivers. Nvidia still didn't fix that, I recommend you send them a bug report. The issue can be resolved by installing the drivers in the proper order, I got it working on my M15x with the 780m.