M17x how to OC 4870 CrossfireX

Anyone have a clue ? all appz for Oc freeze my computer. Maybe we can flash them with a W90 vbios to unlock it ? Anyone that found a hint post it here please !!!

Thx

 

there are couple tools out there

ati overdrive
gputool
atitool

and many more but i think drivers are the problem and we need more info before we begin...

 

Those don't work at all. I'm also looking for a way to OC the cards.

 

try 9.5 9.4 and 8.10 drivers. they worked for me with my whitebook with 3870x2

 

I've tryed 9.2, 9.4 ,8.10, 9.6 and running 9.10 drivers right now. None let me OC at all. All the application you mention earlier Freeze the computer when i try to install them.

Seems likes they are factory locked or have a special Bios... It's not the same bios as the 4870 in W90 have.

Also there no way to dump the bios as all application say the hardware not recognize or something .. !?

 

well you don't want the w90 bios becuase it's lock at 8.6 and 9.4 drivers......

 

Ho i see... Well seem like the mobily 4870 is doomed ? I hope we find something soon.

 

Try out the mob mod from driverheaven. I'm using the mob mod Catalyst suite 9.10 for my 4850 and it worked. Also, I'm able to OC my card using GPUTool from techpowerup http://www.techpowerup.com/downloads/1383/GPUTool_Community_Technology_Preview_1.html

 

I will try that after work. Thanks !
ShinJ : can you tell me if you got problem with OC on your 4850 ? Like freeze or error... with regular driver ?

 

It is not possible for me to install the regular driver in Windows 7 due to the driver auto-installing feature of Windows 7 and it is very frustrating. I end up using mob mod which gave me better score in various benchmark and enable the overclocking of the card.My card currently runs at 550/900 without any problems.I still haven't figure out the maximum clock.Guess I will do it when I'm free.

 

Oc the gpu vs cpu. How many extra fps did you get in games by oc'ing the gpu? What is this number versus using setfsb to oc the cpu? If you are only getting 2 fps more by oc'ing the cards do you think it is a good trade off (gpu life vs 2 fps)? I am just curious. No disrespect intended. I get about 1000 to 1200 points in 3dmark06 by oc'ing my cpu by 300mhz. I always wonder what fps does this really add up to.

Also.. say for instance you are using 8.10 driver. The later the drivers you utilize the better the performance in games (usually.. not always). What if just by installing 9.8 or 9.10 you get 5 to 10 fps better in most games but you can't oc the gpu. vs using 8.10 driver, getting 2 fps more by oc? Does this make sense? What is the real benefit by using older drivers to oc vs newer ones that increase performance.

Just curious...

Thanks, stevenx

 

I can confirm, mob modding catalyst 9.10 don't give access to overclocking function. Still freezing

 

well, it's probably a Video BIOS thing. use Radeon BIOS editor to see if the VBIOS of the cards have an OC limit under Additional Features (when using RBE).

Also, have you had any luck overclocking just one card (crossfire disabled)?

 

I've tryed with only 1 card with no luck. Atitool or other application can't dump the bios saying "can't recognize the chipset" error or something. Can RBE dump bios or change the fact it can be locked ?

 

Have you tried techpowerup! gputool community preview?
This one:



I couldn't overclock with most applications on my 4850s either, but gputool worked, I've been recommending it since for this sort of scenario, even if it is a little basic (and I wish they'd update it).

http://www.techpowerup.com/downloads/1383/GPUTool_Community_Technology_Preview_1.html

Try it, it helped me to get a 10.6k vista GPU score with my M17 (4850m crossfire)

 

It's good to see that there are overclocking tools for ATi cards available.
What about Nvidia cards, though? Is there any tool besides Nvidia System Tools/nTune that works with GTX 280Ms? I can't use NST/Ntune since they crash my system for whatever reason.

 

use 6.05 and reinstall the chipset drivers.

 

I did that, it's still the same problem. I think the problem stems from Ntune trying to overclock the CPU as well instead of just overclocking the video cards when I load a previously saved profile (on startup, for example).
Is there any way to force Ntune to only remember the settings for the video cards, but not for the mainboard/cpu?

 

Hmm, so it can't recognize the chipset? And this is running on dedicated graphics mode, right?

 

dedicated graphics mode ??? onboard is desabled...

 

I'm not embarrassed to admit that I've never overclocked my GPU before. Is there a serious risk if I mess something up (as in, overclock too much?), or will my system simply shut down?

 

Here are something new, i was able to dump the bios. Look like the 2 card use the same bios. When i edit it with RBE it say Overdrive is not present or the card is not compatible.. well we can still change mhz and flash to see if it work.

 

What do the voltage tables read in RBE? (should be under clock settings)

 

voltage 1.100, after some testing on OC i was able to flash the 2 card at 650 gpu and 900 memory... it gave me 700pts in 3dmark2006
16476 pts
higher clock just crash game.

 

hmm, so 650 GPU at 1.1v? that's pretty good, though the memory should be higher (the samsung spec sheet suggests that the memory should be able to reach 1000mhz). I had to bump the voltages higher than that on the W90 (it can handle 1.2v, but not recommended IMO) to get up to 650mhz.

If you can, try entering 1.15 volts, which should allow for more stability at those numbers as well as higher clocks. In your case, maybe 1.13v would suffice.

 

i will try higher memory clock this afternoon. I can select 1.15 on RBE but not more !? over 650 windows give a with screen and freeze right now

 

So with 1.15 the card just start the fan and go into "too hot" mode after 3 min of bench. But here is the max i can do

cpu : 650 memory: 1000 cpu: 3.3ghz
Far cry 2
Average Framerate: 61,89
Max. Framerate: 92,08
Min. Framerate: 45,74

normal score for a 4870 x2 would be 120fps average... here you see were we lost the 50 % bandwigth

 

Run Ultra high everything No AA under farcry2 DX10 Ranch long and short with no OC on the GPUs and let me know what you come up with..

 

Here we go.
Far cry 2 ultra high

Average Framerate: 57,31
Max. Framerate: 87,43
Min. Framerate: 39,89

My other bench with the Oc was done on ultra high at 1920x1200 too

 

Seems about right.. Thats around what i got on my M17x with 280SLI .. Only difference is i had a [email protected].. I know farcry2 gets some decent help from quadcores but i cant remember how much...

 

Did the games that crashed under the previous setting (with lower voltage) crash with these new settings?

 

Also, I'd be interested about the same with 4XFSAA and 8X Anisotropic filtering enabled.

 

it dosn't crash, it just goes into a new mode that is really low clocked. Then the bench look like terrible. In Borderlands, with 1.15v the game just crash. Will test 4XFSAA and 8X Anisotropic filtering enabled after work.

Edit: i'm back at gpu 650 / memory 900 1.1v for stability.

 

Thanks guys, I'm running at 630/900 now (650 gives me a white screen after a little while, so does 640). CPU is at 3.3, any bothered with OCing RAM?

 

So what are the steps to OC the GPU?

I'm sitting here waiting for some instructions.

Thanks.

 

Dump the bios with Ati tool, edit it with RBE, flash with atiflash via usb booted in dos.

that's the way i make it

i overclock by 10mhz step at a time