7970M heatsink modification.

570m = 670m, same card, same heatsink.

 

If I have right 670m is a overclockt 570m? Lazy Nvidia

 

noise means?

 

It's an electrical engineering term, noise is outside interference by "decoupling" a power plane you remove some of it.

However too many will slow down your circuit to much so like all engineering there is a balance to strike.

 

do u mean it's something like part of impedance?or power lost?
starting to get it. still noob is thing kind of thing. but i am interested in electronics

 

A perfect dc power supply would give a square wave input, but in this imperfect world its a sine wave approximation with non 90 degree angles, also noise adds bumps to the signal. A clean supply will improve the switching performance of your chip and a well controlled one too (keeping it steady when going from idle to load, say 1v voltage, going from 3w to 100w power consumption means the current goes from 3 amps to 100 amps!). You have to balance speed, cost, efficientcy and supply quality.

Sent on my galaxy s2 on the desktop website as it laughs at your mobile site.

 

How can a power supply affect its own AC input signal? Are you talking about like, after it hits a certain input stage before it goes to DC?

 

In this case you have several stages of filtering in a laptop or desktop.

First you have your power brick. It's job is to give you a half decent DC output and stop all the big nasties coming in from the wall.

However it does not give you the best quality so you get another basic stage for your battery (notice the power circuitry near the pins to the battery) and since its not massively sensitive that's all it needs. It also goes off and gets filtered before even reaching the MXM slot (probably to standards in the spec) and then finally on the card itself.

Each time the power circuitry could also be stepping to a different voltage but in either case it will be ensuring the DC signal is as clean as possible. The more phases you have the less work each phase has to do and the better your signal. Past a certain point you get diminishing returns and a smaller number of well designed phases is always better than a large number of poorly designed ones.

That's why a motherboard with 5 well designed phases can do better than a 24 phase one.

 

desperately in need of 7970m

 

arent we all buddy, arent we all....

 

I have bad news dude... They cant sell a 7970m to you. Because they only can sell 1...

 

haha, yeah.. hope that the supplies meet the demands
living asia makes it hard to get the latest electronics stuff, except china though
anyway, i'll try to pm upgradeyourlaptop in ebay then. hope they'll give decent price. or should i wait for gtx 680m?:/

 

Does a ac adapter who come from a Gt680 or 780 fit to my gt663? Because a 180w adapter from a swedish company sell it for only 599SEK!

 

Yes it will fit.

 

thank you

Is it a good deal? A new msi charger, and it is in my own country = Fast shipping

 

jaybee83: Hi,
I've got DevilTech but Fragbook DTX. (CLEVO P170Hm). I have a GPU HD 6990M . It is possible to exchange for the HD 7970M? It will not be a problem? THX

 

yup, heatsinks are compatible/interchangeable between 6990m and 7970m. btw, good to see a fellow delviltecher!

Sent from my GT-I9001 using Tapatalk 2

 

Thanks a lot. And not problem from the BIOS? THX

 

make sure that wherever u buy ur 7970m it has the modded vbios preinstalled which makes it compatible to ur machine.

Sent from my GT-I9001 using Tapatalk 2

 

I have the BIOS original (Version 4.6.4). So the HD 7970M VBIOS should be modified? THX

 

im talking about the gpu bios not the system bios. make sure to ask the vendor u buy it from about it.

cheers

Sent from my GT-I9001 using Tapatalk 2

 

DevilTech answered me as follows on HD 7970M
das ist leider nicht moeglich. die neuen ati karten funktionieren nicht in den alten geraeten.
DevilTech just AMD cards do not.

 

thats BS,they just dont know about the modded vbios send them a link to the petition thread here. schenker actually told me the same and when i send them the nbr link they didnt answer me anymore. just goes to show how "competent" they are

Sent from my GT-I9001 using Tapatalk 2

 

I see. And to you HD 7970M will go okay... to DevilTech Devil 9800 DTX?
How many was HD 7970M? (price to Schenker)

 

This is not the thread to be asking questions about a Clevo system. Nor is it even in the right subforum.

 

thats correct! better send me a PM if u wanna know more

cheers

Sent from my GT-I9001 using Tapatalk 2

 

I'm hoping to get my hands on a Dell 7970 sometime around next week and try to install it in my GT683dx. Now where could I get a 5870/6990 heatsink to use?

 

hmmm, id say either try ebay or our very own NBR marketplace here?

 

From what I read in this thread, there is no way of making the 570m heatsink compatible, right? Not even with thicker thermal pads?

 

if all else fails, u could use a dremel and make it fit

 

make it fit, as in dremel all the "bumps" and put pads where they are needed?

 

yup,pretty much its several hours work to make it perfect,but it works

edit: of course i dont mean dremel ALL the bumps, just the ones that are in the way

Sent from my Galaxy Nexus using Tapatalk 2

 

Myx message Paulow, last I heard, he had 2x of the 5870m 3 pipe heatsinks. These are the ones you will need to properly fit to the 6990/7970m (with a small mod with dremel) and they will also help dissipate heat better than the 2 pipe version.

Has the GT683DX been tested and worked with different graphics cards yet? Might want to look into that as well.

 

The gt683dx is just the OEM version of the 16F2 that pau1ow used to test the 7970 so my logical guess was that it should work.

 

I am interested in taking the plunge with one of these cards. Will this card be compatable with a MSI 1761? AMD Radeon HD 7970M 2GB FOR CLEVO | eBay

 

I think it should as long as you flash it (before installing) with the Dell vbios.

The initial test has been done with a Dell 7970m and it worked out of the box.

 

Please forgive my ignorance, but how would I flash it with the Dell bios, or is this something the vendor would have to do?

 

It would be best if the vendor could ship with the Dell bios already installed. Otherwise you would have to find a compatible computer that boots with the clevo card and flash it with the dell vbios.
A blind flash is too risky as it seems you are new to this.

 

Thanks Myx.

I have done some research and even found a guide on blind flashing in one of the Asus forums on this site... http://forum.notebookreview.com/asu...0-ati-hd-7970m-asus-g73jh-23.html#post8795096

I am game and will give it a go.

Interestingly, I note that, for the MSI GX740 at least, there has been some success with the Clevo cards using a Clevo bios. GX740 succesfully upgraded to AMD7970M

If it doesn't work straight up I am happy to tinker until I get it right

 

The thing is about blind flashing and this particular situation, I am not sure that the laptop will even boot with the clevo card, let alone allow you to tinker with it.

You should pm pau1ow and ask him specific details about this. It has something to do with enduro (the AMD equivalent of Optimus) built into the clevo 7970 cards.

Good luck.

 

The clevo cards look for a hardware handshake required for enduro and can not start without this, therefore for non enduro systems it needs either a different vendor bios that is not necessarily in enduro mode (dell, though i dont know if its compatible) or with the HM (which don't have enduro) customised bios they created.

 

Thanks Meaker,

I am lining up the purchase of my heatsink and am in discussion with a couple of Dell owners regarding the purchase of a 7970M. Hopefully it will all come together in the next few days, then I can unpack the dremmel...

 

Is it just me or this dremmel tool (that I cannot find a word to translate in my mother tongue) is an expensive tool?

Closest I could find ni the market is around 250 euros. I wonder how in the world I can modify the HS without having to buy that :/

I got an electric screwdriver. Maybe I can find the right head to attach to it to use it? Any info, maybe a picture of the actual tool, would be highly apreciated

 

There is a photo of the Dremel 300 on this page. Dremel 3000-1/24 300 Series Tool Kit | eBay

It is not cheap, but versatile.

 

I was thinking I could just buy the dremmel heads and try to fit them to my electric screwdriver.


Either way, I'm waiting for pau1ow to ship the HS.

 

Hi there

I have bought a 7970M and i want to upgrade my GT780DX which is 'born' with a GTX570M.

Do i really need the 5870M heatsink? Can't find it anywhere - do you know where i can buy it?
And secondly, could i use the nVidia heatsink, if i used some more thermal pads? It's was mentionend earlier in this thread ..

But very nice mod job!

 

You do need the 5870m heatsink - unless you can dremel the whole heatsink flat and then put correct layers of pad to compensate the lack of height of the different parts.

 

Okay, thank you. The search must go on ....

 

They are quite tough to find unfortunately...

 

So I got the card today , now waiting for the Heatsink.

In preparation for this, I found a place where I can get a cheap dremel like tool (used, but I dont really care as I will use it onyl for this job). But which accessory head should I use? The cone head, disk, or whatever other stuff I saw is available for the tool.

Maybe Meaker or pau1ow can post a pic of the head they used with the dremel

Thx.