How to overclock ATI Radeon HD 4850

[quatroportte]

i have a 4850 pallit, did a benchmark STOCK, and it has 22,345.... overclocked it has 26,856

[xXbutters1234]

err does it work for vista? :P

[wiiwheel64]

if there are any, wots the risk with overclocking?

[ThaDK00]

im gettings my radeon 4850 in about.... 30min? :D

[keffje007]

i got mine to 750/1185 on 2.2 volts on air

[stuntrider88]

I've got an Asus EAH4850 512mb card, wit the stock cooler I could only overclock to 710gpu & 2008mem, so i ditched the stock cooler & bought a Zalman VF1000 pure copper cooler for it, along with the cooler it Zalman also supplies memory heatsinks, as soon as I installed to vga cooler & heatsinks I was able to overclock the card to 810gpu & 2400mem :) Didn't volt mod it or nothing, runs stable at full load & never goes above 56c gpu & 59cmem. All that overclocking gave me 12-15fps faster :)

[jamesdk09]

ii overclocked mine...700/2200 with stock heatsink...but used a case fan with speed-control max speed 2,100 rpm ...idle at 35o celsius -max load 45o celcius doesnt go over 50o celcius

[GENERAL1002]

And I know it can't be the temp cuz the reason I got the Arctic Accelero was because the stock fan kinda died after I ran it @ 100% for like 3 months. Saw this thing hit 117c @ some points (100% fan duty). All it did was freeze up for a sec, cool down, and keep gaming. Not a burn anywhere on the card or old heat sink. I was astonished (ATI FOR LIFE!!!!)

I'm using Win XP 32-bit SP3 btw.

[GENERAL1002]

How the hell do u guys get such stable clocks? I tried running Crysis @ 6:60/1050mhz and I got a VPU crash about 20mins in. First level. I wouldn't even dare go past 6:60 with those reactions. Temp was at about 62c. Just installed the Arctic Twin Turbo today too. Could it be a voltage problem? I'm kinda noob at voltage so do I have to make some sort of custom VDOC file to take the voltage past 1.158 or look elsewhere?

[eMeR90]

MY MSI R4850-2D512 RUNNING ON 770/1200Mhz WITH 27 200 POINTS IN ATT BENCH. SCREEN FROM BENCH YOU CAN SEE IN MY PROFILE.

[bigbad1000do7a]

running 700/1200 bone stock. 33 idle, 60-65 full load for 3 hours playing mw2

[somberlay]

so basically overclocking increases your performance now i know

[jasamkoca02]

yeah but OVERclocking increases ur chance of losing a device ._.

[IRTEHHAX]

I just recently found out you can software voltmod this card, but only to 1.2v, standard is, uhmm, 1.12? you could probably get it to 760 or higher stable with 1.2 volt, read up on google about "volt mod 4850 xml profile"

[LizzyAston]

how do you up the voltage? im not getting stable OCs with core clocks

[Drums3in3flames]

Hey, I have the Mobility Radeon HD 3450, and I just wanted to know; Is it safe to overclock? and will it make any diffrence (small or big?)

[PatVRulz]

laptop overclocking, i don't recommend it. You'll set on fire

[cazzimbrocchio]

I don't know you, but I hav the 4850!

All the users haven't any problem...

Try again and tell us...

[1littlelee]

ATO tool dos not run with 4850 so tll us what card you really have!

[creamsoda4025]

ATI tray tool DOES run with 4850 you dumbass..

I have 4850, and OC the hell out of my 4850 with ATI tray tool.

[IRTEHHAX]

You can only clock the radeon 4850 to about 700(730max unstable) core, and like 1140 memory.. you can go beyond, but it needs more voltage to run over those settings (and so far you cant software over volt the card) could be fun to rip off some of the volt controllers on the card and test it then? :O noooes...

[Jon3sySk8er]

nah i can OC mine to 750 can go a little higher but starts gettin abit unstable and memory i can get 1150 any higher unstable xD

[revorocks123]

I have mine at 700/1200 with no problems atall :) Reaches 70C under full load.

[undertoes]

where do u get those stats from?

[revorocks123]

Catalyst Control centre in the Overdrive tab. Tells you your frequencies, temps and GPU load :)

[Fran0neal]

But.., I can only run it 'til 690 / 1105

[cazzimbrocchio]

If you pc isn't very good, take down the overclock value. The Overclock is a process to increase the performance of your VGA, but remember that your pc's components (Feeder and MotherBoard) are affected!

[krururaras]

hey i have a problem when i try to set the clock even if i make it higher by 1 my pc just goes black and restarts any help ?

[cazzimbrocchio]

BluTrollPro is a oGame ship! xD

[BluTrollPro]

TYTYTY just what i needed :) btw what is that background looks like X3TC but dnt recognise the ship :)

[wikki11]

That was what I´m looking for! 1000x times thanks !

[cazzimbrocchio]

;) I want to post hot to overclock the speedfun too...I need only time!

[Cerpantoman]

great job !!