9800m GT Overclocking

I know what I'm doing when it comes to overclocking. I only wish laptops shipped with unlocked motherboard BIOs.

As well, this is why you don't over**** the GPU and CPU at the same time.

 

so im guessing setfsb + bios flash overclock = a nono?

and why is it bad to overclock both the cpu and gpu?

 

I oc my 9800m gt, but i cant seem to figure out setfsb. Any have a link to a tutorail, or just some instructions to get me started?

 

For the Montevina and SetFSB:

Select Clock Generator RTM876-660.
Click 'Get FSB'. The frequencies will show as a match. Your current clock will appear in the lower-right corner
Move the slider below the freqs a bit to the left.
Hit 'Set FSB'.
The clock will go grey, then reappear either higher or lower. If it's higher, it worked; lower, you'll need to do it again.

Be careful with retrying it rapidly multiple times, because you can lock up your system. If your GPU is already overclock, do not do SetFSB, because it's already raising the frequencies on your GPU (not to the levels of your hard OC, but it'll add up to being too much) . You'll crash your card, risking damage.
.........

I've never overclocked via a flashed BIOS before, so I'm pretty scared of the process right now. I'll man up and do it soon though enough, but I still need to bum a thumb drive off of someone.

 

I have tried using the SetFSB tool on a NP-9262 could not get it to work, I guess it's not for Quads.

 

I used SetFSB to overclock my m860tu with p9500 to 2,7ghz but noticed that my cpu went to 80C temperatures so I decided to not keep it overclocked.

I thought that the FSB would revert back to default after reboot, but cpu-z and 3dmark06 shows that my FSB is still overclocked. So how can I revert it back?

 

shutdown first and boot again.

 

That helped, thanks!

 

so can anyone tell me why it would be bad to overclock both the GPU and CPU? if the temps are fine after the bios flash why would it be bad to OC the CPU?

 

In these systems, the cpu overclocking is done by fsb overclocking, which (because you can't lock the pci-e frequency) also overclocks the gfx card by the same percentage. This means that if you overclock the cpu and gpu separately, the gpu is getting a double overclock, thus generally rendering the system unstable

 

^ahh that makes sense.

how are your guys' benches comparing with the bios overclock versus setfsb?

i was at 9200 about before setFSB and after my score was 9876. how big of a jump are you guys getting with the bios flash?

 

I got 10494 after my bios flash.

 

I may not have an 860tu, but I get 11021 with vbios OC and slight fsb OC

 

I'd probably get a similar score with an FSB increase, but I don't feel like messing up my components with dual overclocks. If there was a way to lock the PCI-E frequency, I'd do it in a heartbeat.

 

Through fsbset, I'm OCing my CPU to 2.7ghz (and no more?!) as confirmed by cpuz. But there seems to be no change on the gpu as confirmed by gpuz.

 

1200 you say?

When I said that people laughed at me. lol

Buthtat's exactly how much I expect out of a decent OC on this card.

 

but what was your score before...

 

oh, my bad, forgot to mention it.

9563

So yeah, a 900 point jump.

 

So guys, i was trying to overclock my M860TU with Setfsb tool, from 2.8Ghz to 3Ghz(it can't go higher), and it gave me boost in 3dMark from 9600 to 10360, but in Crysis i've got only 1,5-2 fps increase! Can i have more performance with my video card overclocked?

 

At lower resolutions, 3dmark is cpu bound, so a small fsb OC will help a lot. In games, they are not cpu bound, so a cpu OC won't help much.

If you are OCing with setfsb, the gpu will not realise it is being overclocked, as you are overclocking the bus it is running on. This bus is the GPU's only frame of reference for its clocks, so it will still think it's running at stock speeds, but it isn't

 

I'm still a ''NEWBIE'' in such things as overclocking...i should start with BIOS flash, and then overclock GPU with something like Riva tuner, right?

 

If you are new to overclocking, I'd feel very hesitant about recommending you get anywhere near a GPU bios flash...maybe I'm just conservative, but Bios flashes, while relatively routine, can go horribly wrong - and you're talking about a relatively expensive piece of kit here... do you *really* need to overclock your GPU, or is it just for show?

Petrov.

 

I've noticed a lot of peaple doing overclock with their GPU without no problems and they say it's easy! i have my laptop as a desktop replacement and i need more fps in games, not for show, of course! if you can help me with it, i'll really appreciate it!!!

 

10 characters 10 characters 10 characters......

 

yeah i wish someone would post two step by step guides. one on flashing bios and one for doing a software overclock.

 

im pretty experienced with desktop overclocking, ati tool, memory/shaders, temps, working my way around in bios, etc but ive never had a reason to do a bios flash and im new to laptops in general. is there a hardware fix if you screw up the bios flash like resetting the cmos? ive made a bootable flash drive before but ive since forgotten how, can someone link me to a guide?

like someone else said, could anyone put up a step by step guide for a bios flash?

 

If you do a search, there are plenty of guides for what you want to do.

 

ok using this guide http://forum.notebookreview.com/showthread.php?t=246530&page=1 i have a bootable flash drive. im confused about what to do next though...

i dumped my original bios using gpu-z so i can have a backup, but it saved as a .bin. doesnt it need to be a .rom? how do i get it to be the filetype i need?

i got NVflash but im not sure which directory im supposed to put the files in. the guide above have a C: folder and a C:/clevo> folder. which does it go into?

i have Clyzm's OC.rom file which folder does it go into?

the guide also says that once in bios and at the C:/clevo folder you just type refresh, but i thought you need to type -5 -6 and then the filename of the bios to want to execute... which is it?

 

anyone have an nibitor version working with the 9800m gt for vista 64 bit?

 

actually more for an nvflash i could use in a cmd window for 64 bit

 

you can't flash bioses in a command window as it is not real dos. You need to boot into real dos with a usb flash drive/boot cd/floppy

 

actually that's not true cause i've done it before with a 7950gtx on my old system...

 

ok, it's unusual to find a program that does it and it's alot more risky

 

should i assume that 88C after a couple hours of crysis is too hot?

it seemed stable...

 

Seriously the guy that will make those 2 step-by step guides or an o/c step by step guide will get a ton of rep (me including) and should go as sticky because every week we have the same conversation about this,and not only this but in the end theres so many diferrent opinions in those threads that someone is afraid to do it.

Edit: I miss Dexgo

 

You have to use a vbios flash to get the card OC'ed because software OC's do not work or result in really UNSTABLE oc. Nbiitor does not have native support the 9800M GT. You have to change the device id from b - c apply oc's then change it back to b. When i did this it seemed a bit unstable even with the low oc's but it might just be me.

 

Ok i just installed nibitor:In device nibitor->Adv Info->Dev id no card is listed,i cant even rescan bios i dont understand why cant see my cards.
Edit: im using Vista 32bit as O/S seems is not supported and i need to use nvflash?

 

nibitor doesn't automatically read your bios into it, you either have to load a bios file or scan your bios.

Try:
open nibitor
tools -> read bios -> select device
select your video card
click read

This should read your vbios, then save a copy of that bios without any modifications (as a safety backup) then do whatever you want with nibitor and save the modded one with a different name.

Then you need to make a bootable usb stick, put nvflash on it along with the modified bios and the unmodified safety backup bios and boot into it then type 'nvflash yourbios.rom' without the quotes and replacing yourbios with whatever you called your oc'ed vbios

 

Nibitor doesn't read when I tried that, so used GPU-Z. Just click the little hand that's on the right side of bios version, and it will dump your bios as a bin file. Then go to Nibitor and choose File -> Open BIOS. Change Nvidia Bios Files from rom to bin, select the bin file, and you're loaded into Nibitor.

Just be sure to save a copy of the original bios. Once you save your changes, it will turn it into a rom.

 

Oh, I though the nibitor vbios read was only broken in v64...

If it doesn't work, then do as Kevin_Jack said and read it out by running gpuz and clicking on the little chip icon next to the vbios version number.

 

Ok just did that its loaded in nibitor,made a copy of the bin file in an ext hard disk ,now what is the next step?

Edit :I just changed the id /changed the cores,voltage and renamed back the id,saved the sec o/c bios on desktop,now how i can make this work?

 

As you have sli, you need to flash both gfx cards separately, I don't know the commands for this, so try pm'ing someone with an oc'ed sli rig

 

OK, looks like the commands you need are, first to show the two card id's:

nvflash -a

then to flash each card:

nvflash -i=1 yourbios.rom
nvflash -i=2 yourbios.rom

assuming the id's the first command gives are 1 and 2

 

Dexgo Would be your man I remember on his D901 he had a single 8800gtx card and made it hit 12k 3dmark score. I dunno if he went SLI yet but i remember his posts being really nuts on how to OC the system yet achieve maximum performance and stabability, also the other i think is Magnus72? (SP) he owns a Dell 1730 and does OCing in sli i think.

 

Dexgo disappeared months ago...most people have their oc's in their sigs, so should be easy to track down someone with oc'ed sli

 

I have no idea how to make a bootable usb disk in vista and im searching through google,i guess after i create the bootable disk ill need to copy paste the 2 rom files(the original and the o/c one) and nvflash.exe,then use the command therico wrote for flashing the o/c bios on both cards?

 

I found something good: http://forum.notebookreview.com/showthread.php?t=160237&highlight=gpu+bios+flash

Just skip the step about 3dmark.

 

That should go sticky or used as a referend in near future,i dont know how i missed that guide,thanks to all that helped +rep Theriko/Kevin,ill give it a try tomm. bec even my usb's dont want to help and they seem to give errors,ill buy one tomorrow and finish this.Thank you.

 

Whats the highest clock anybody here as been able to get out of their 9800m gt???

 

Ye, I would also like to know what are the best safe and stable clocks for 9800M GT.
(I have NP5796 with P8400 CPU)