Robbo

Haha, I think you mean 1.05V rather than 1.5V!? 1.5V is not safe, but I imagine 1.05V is quite safe, as long as temperatures are good.

Hi, look here at post #80 where I've explained this process: http://forum.techinferno.com/alienware-m17x-aw-17/3702-m17x-r3-gpu-upgrade-gtx-780m-8.html#post57849 The modified inf that I attached to that post is an old one, so you might want to download a newer one from laptopvideo2go, like I explained in that post I linked above. EDIT: for some reason the modified inf file at laptopvideo2go is unavailable right now, maybe temporarily. You can use the modified inf that I attached at that link, should work. - - - Updated - - - Mine's working fine with latest NVidia driver, and NVInspector.

Am I right in thinking that it was working fine with the 326 beta drivers? I wouldn't upgrade drivers through device manager, I'd use the normal NVidia setup program along with a modified inf. Assuming that your card was working fine before, and you don't have hardware issues, then I'd recommend uninstalling all NVidia drivers, running CCleaner registry cleaner to remove any remaining entries, then installing the latest NVidia drivers using the normal method with modified inf (not device manager).

Just the same as how you'd overclock any other GPU. Try NVInspector. I'm surprised you're considering flashing a new vBIOS when you haven't had any experience with overclocking before. I think you could benefit by googling around the subject to learn a bit more about it.

I think you've chosen the right one, that's the one that will allow you to change voltages & clock speeds using NVInspector.

That 3840QM should be good for gaming for years; the GPU will be obsolete before you need to upgrade the CPU.

Hi Rambo, you've got the same GPU as me; yep, they're awesome for overclocking. Did you flash a modded vBIOS to it? How far did you manage to overclock it?

Hi Klem, I'm curious, are you working with svl7 on these new modded vBIOS files, or are you doing it independently? Do you mod them in the same way that svl7 does?

You can use GPUz to save the vBIOS, and then you can post in up here.

Excellent :-)

Haha, yes, I can see how that's happening! :-) Don't get too desperate & ruin them though, sell them instead!

Gees Man, I really don't think that would work, it's a whole different chip & piece of silicon, with different number of transistors & shaders, I really don't see how that could work! EDIT: or do you mean GTX 680 rather than GTX 680M, in which case I think the 780M is based on the GTX 680, but with lower clocks & different voltages. Still don't know what you'd gain by flashing it, why not just overclock & overvolt as you see fit. Confused. I think you're getting confused between the GTX 680M and GTX 680.

I calculated that my overclocked 670MX uses about 85W of power when gaming, and my entire system uses 145W when gaming. If I was to imagine that I'm adding another 670MX to simulate sli, then that would mean 230W power consumption for my fictional laptop. So it looks like a 330W power brick would be enough, and a 240W brick would be pushing it a bit fine.

Yep, those 670mx GPU's overclock like nobodies business! I've had similar success with mine, albeit I don't have an sli enabled notebook.

Yep, that sounds like a good idea. They may well just replace the entire heat sink rather than just do a re-paste, but not sure about that. If you call them up and explain to them the problems you're having, then they should be able to sort it out for you.

Your temperatues are going to be based on a number of factors: 1) What model of laptop do you have? Different cooling systems have different efficiencies. 2) Have you blown the dust out of the heat sink using a can of compressed air? 3) Was the thermal paste applied properly to the GPU core? Is it the heatsink padded up correctly & installed correctly? 4) What is the ambient temperature in your room? Hotter = hotter GPU. 5) Are you using a notebook cooler? Can drop temperatures by 5degC or so. 6) Are you using the laptop on a flat surface, so that the fan inlets & outlets aren't obstructed. Those are all the factors that will effect your GPU temperature that I can think of.

Right, thanks for the info. I'll create some different profiles of those multiples. 72Hz for film watching if it's on a DVD or something (I'll use FRAPS to check what the actual framerate is first), 75Hz for watching BBC iplayer, and I may up it to the limit of 78Hz that I can get for games. Thanks. Does video content sync it's output to a complete frame then, like Vsync in games (if the multiple of Hz fits)? Because if it didn't sync it's output anyway, then would it not matter what your Hz setting was anyway?

It shouldn't disappear, mine's still there. Maybe it goes too quickly for you to notice!

Yep, seems pretty good to me :-)

My system is setup as RAID (even though I don't have the drives in a RAID configuation), and it's not an issue. I still get the splash screen for the OROM (think that's the term) for the RAID, the svl7 Tech Inferno splash screen is the first one, then the RAID splash screen, then BIOS post. Does that answer your question, not sure if that's what you were asking?

96 or 72 right? Just multiples of 24 I guess? Setting it at some other 'random' value isn't any worse than the 60Hz most screens offer right? - - - Updated - - - Well that's good to know, gives me some piece of mind, thanks. :-)

That's pretty cool that you guys are pushing 100Hz on those screens, I managed 78Hz on mine, but backed it down to 75Hz because I didn't want to be right on the edge & maybe damage the monitor. Yep, I do have a different laptop to you guys, but wanted to post my results anyway. I sure would like 100Hz! Are you concerned that it will damage your screens over time? Or do you know it won't do any harm, I'm just not sure about that, but decided to run mine overclocked 24/7 anyway! :-) EDIT: Don't seem to be getting any skipped frames with the tests I've done.

Good advice I think, but I wouldn't recommend the 580M - it's last generation tech, runs hot with high current consumption, has a fairly high hardware failure rate, and is nowhere near as fast as the 770M. The 770M is excellent though.

I think svl7 has created that Tech Inferno splash screen so that the vBIOS cannot just be copied by anybody & masqueraded as someone elses work, I think it's just a stamp of authentication. (Apparently Chinese websites were copying his vBIOS files & masquerading them as their own). It's normal for the actual Mhz to differ slightly from the set OC Mhz. This is because there are distinct 'steps' of Mhz that the GPU can operate at. Whenever you set you OC Mhz value to a value that is not one of these exact 'steps', then it will default to the next lowest 'step'.