Overclocking 4850 beyond 700mhz

[gurusan]

Using stock cooler?

yes. And asus fan control. THe stock cooler isn't half bad if you can control the fan

[Battlestar]

yes. And asus fan control. THe stock cooler isn't half bad if you can control the fan

Cool, I assume you used this trick (you posted on previous thread):

disabled overdrive, pencil modded...edited the bios with a hex editor...and flashed

?

[gurusan]

yup. It sounds like a new version of RBE will be released very shortly though...allowing fan control as well as clock changes. That's much easier than editing the hex tables....staring at all those values gives me a headache.

[Battlestar]

staring at all those values gives me a headache

Hehehe but you have a nice table there buddy, let say you have successfully OC your card in hard mode RBE is the easiest way, but if the release won't up this evening, I'll try your trick

[HeX_00]

A VF700 is enough for this card?!?! time to canabalize my 7600GT. Will have to buy lots of ram sinks though I assume for all of the stuff.

VF900 certainly does work with this card, i'm running the ZV9 (the silver/red version) on mine.

With fan at lowest (silent) idle temps are ~50C, load temps ~85C (stock cooler was giving me 82C idle, 92C load).

If you crank the fan up to about half way on the VF900/FC-ZV9 then load temps come down to ~70C, maxed out fan (noisy as hell!) will give you high 50's/low 60C's.

The Accelero S1 will prolly give you better temps with a 120mm strapped to it, but I didn't have the space to squeeze one in.

[T2k]

4850 I would think.

Its in the title.

LOL

[T2k]

RBE doesn't display anything here, in Vista Business x86... what am I doing wrong?

[W1zzard]

RBE doesn't display anything here, in Vista Business x86... what am I doing wrong?

did you click file -> load bios ?

[gurusan]

^lol.

it works fine for me..I'm on Server 2008 64bit

[Battlestar]

^lol.

it works fine for me..I'm on Server 2008 64bit

Hi I have a problem regarding the RBE latest version. I set the fan into default settings and it shows on GPU-Z 50% fan speedand it drops my temps from 72deg to 61deg , my problem is it underclock my GPU Clock into 500Mhz but the Default Clock remains 625 Mhz with same Memory 993Mhz I think. Is this normal? Sorry I can't provide screenshot still here @ the office Anyways, I revert my default BIOS and still waitin' for your answers

-battlestar

[Jakalwarrior]

Does it stay at 500 when you give 3d work load?

[Battlestar]

Does it stay at 500 when you give 3d work load?

Hmm Im not sure buddy, But Im pretty sure when you check on GPU-Z under Graphics Card Tab at the botton you can see this following:

Using RBE with 50% FanSpeed (I used the Set all fan settings to recommended values that's why came up 50% FanSpeed)
GPU Clock: 500Mhz Memory:9XXMhz
Default Clock 625 Mhz Memory:9XXMhz

Also on GPU-Z Sensor Tab:
GPU Core Clock: 500Mhz
GPU Memory Clock: 9XXMhz

My Default BIOS
GPU Clock: 625Mhz Memory:9XXMhz
Default Clock 625 Mhz Memory:9XXMhz

Another thing, I don't see anything this kind of tables on my latest RBE
*See attached file with red box



Im using WinXP SP3
Sapphire 4850

[thriller99]

can u give our RBE software ? I can't download it from anysite !

THx !

best regard !

[gurusan]

can u give our RBE software ? I can't download it from anysite !

THx !

best regard !

How about checking the site where it always is? :p

http://www.techpowerup.com/downloads/Utilities/RBE/

[zbomb5610]

Hmm Im not sure buddy, But Im pretty sure when you check on GPU-Z under Graphics Card Tab at the botton you can see this following:

Using RBE with 50% FanSpeed (I used the Set all fan settings to recommended values that's why came up 50% FanSpeed)
GPU Clock: 500Mhz Memory:9XXMhz
Default Clock 625 Mhz Memory:9XXMhz

Also on GPU-Z Sensor Tab:
GPU Core Clock: 500Mhz
GPU Memory Clock: 9XXMhz

My Default BIOS
GPU Clock: 625Mhz Memory:9XXMhz
Default Clock 625 Mhz Memory:9XXMhz

Another thing, I don't see anything this kind of tables on my latest RBE
*See attached file with red box



Im using WinXP SP3
Sapphire 4850

i don't have that table on mine either.

[Battlestar]

Ok, Im downloading the MSI & Visiontek 4850 BIOS here and it looks like both Visiontek & Sapphire have no Uselook up table for the latest version of RBE. MSI have one and not sure on the other brands

[halo112358]

My Sapphire 4870 has lookup tables in the latest RBI, just FYI. I set everything to recommended and now the card sounds like a hair drier half the time, but runs a lot cooler

The cooler reminds me of my x1900xt...

[T2k]

did you click file -> load bios ?

Yes.

[painkilla]

so when can we expect the normal overclock utilities to support 4800 series? Way more easier and safe to overclock on driver level instead of bios flashing.

[danbfree]

so when can we expect the normal overclock utilities to support 4800 series? Way more easier and safe to overclock on driver level instead of bios flashing.

http://www.hardforum.com/showthread.php?t=1322701

Not a "normal" tool like RivaTuner but a simple software one at least...

[HamTard]

How does a 4850 @ 740/1050 compare to a 4870 @ stock in game performance?

[Furious]

Is it normal for the default memory to be stable at 1100mhz?

I flashed mine with 1.327v core and it didnt seem as stable on the core as when I used 1.158v.

Right now 1.158v 700/1100mhz flash seems to have worked really well. Updated the FAN profile so its idling around 55c now with 45% FAN and kicks up to about 70c under load with 55% FAN. Seems quite solid.

[SNiiPE_DoGG]

How does a 4850 @ 740/1050 compare to a 4870 @ stock in game performance?

IIRC 10%

[Mungri]

Powercolor use the following HSF on their overclocked 4850's:

http://www.zerotherm.net/eng/product/GX810.asp

It doesn't list the 3800 and 4800 series as being compatible, but they are used on both Powercolor and Club 3D cards.

Maybe send an E mail to Zerotherm if you need to ask about compatability, but the coolers are very good - 3850s run at 70 degrees under full load at 775 Mhz, I'll get my 4850's soon to play with.

I think the best solution is to just buy a card with one of these on it. No furthur modding required, just install it and start overclocking =D

[insurgent]

I wanted to put my Zerotherm cooler on my 4850 Sonic but Palit put the freaking warranty sticker on one of the screws. It's not a big deal because the Sonic's heatpipe cooler is already so much better than the stock one. The Sonic's stock clocks are 685/1000 iirc and I tried Auto-Tune in CCC just for the heck of it and it set the clocks at 720/1040.