ATI HD4850 Overclockers' United

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ATI HD4850 Overclockers' United, welcome to the Darkside overclocking!!

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ben3003

Jul 4 2008, 08:14 AM

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Seem like alot of ppl is having HD4850, i just make a thread to see how we OC the card. For me, i oc'ed the card to 690/1050 rock stable. Later we can see any sifu out there can teach how to Vmod or do better overclocking

ATI HD4850 user:
1. ben3003- Sapphire HD4850 512MB DDR3@ 690/1050

HD4850 Bios Database:
http://www.techpowerup.com/vgabios/index.p...face=&memSize=0

What i've heard from them is MSI bios is better at overclocking due to the increased voltage. Grab 2008-06-05 16:52:00 one.

This post has been edited by ben3003: Jul 5 2008, 09:04 AM

cyloh

Jul 4 2008, 08:29 AM

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Whoa... the radeon 4800 series oc'ing

this should get things going -> 4850 volt mod

Just yesterday I saw one happy dude with his gainward 4850 walking at lowyat. Then see him again buying
xigmatek battle axe for his gc....

AMDAthlon

Jul 4 2008, 08:31 AM

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It should be 4000 Series.If 4850 only,later other user will create HD4870,HD4650 and so on.

ben3003

Jul 4 2008, 08:38 AM

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This is solely for 4850 only, just like 8800gt got their own, 9600gt also. Becos different thing ma, later ppl confused. Anyway,

khaidani

Jul 4 2008, 08:41 AM

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Casual

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i'm getting gecube 4850 tonite, what cooler r u using?

ben3003

Jul 4 2008, 08:55 AM

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I am using accelero s1+xigmatek 120mm fan. Very nice combination, full load wont exceed 55c.

Added on July 4, 2008, 8:56 am@700/1100

This post has been edited by ben3003: Jul 4 2008, 08:57 AM

coolice

Jul 4 2008, 09:06 AM

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@ben3003
bro,do u mind to do a 3Dmark06 run at 700/1100 for me?

ben3003

Jul 4 2008, 09:20 AM

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oh, wait i need to install the software. Btw, is my score pretty good? I tried 690/1100 the GPU mark is 100 lower.

coolice

Jul 4 2008, 09:21 AM

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breakthelimit.net

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QUOTE(ben3003 @ Jul 4 2008, 09:20 AM)

oh, wait i need to install the software. Btw, is my score pretty good? I tried 690/1100 the GPU mark is 100 lower.

yeah..my score really odd..same clock speed as urs but gpu score 1k lower..zzz
got to try again next week and with cf..hopefully good

ben3003

Jul 4 2008, 09:23 AM

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Lolz, yalo, i saw ur gainward review, quite low. But i compare my score with guru3d, theirs also around 1k lower than me at stock.

Added on July 4, 2008, 9:23 amAnother thing is, 3dmark06 is quite low for 4850, becos the SM2.0 score super low.

This post has been edited by ben3003: Jul 4 2008, 09:23 AM

coolice

Jul 4 2008, 09:30 AM

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breakthelimit.net

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QUOTE(ben3003 @ Jul 4 2008, 09:23 AM)

Lolz, yalo, i saw ur gainward review, quite low. But i compare my score with guru3d, theirs also around 1k lower than me at stock.

Added on July 4, 2008, 9:23 amAnother thing is, 3dmark06 is quite low for 4850, becos the SM2.0 score super low.

vista 64 and driver?
wat do u get for sm2 and sm3?

ben3003

Jul 4 2008, 09:36 AM

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I am on vista 32bit, ati 8.7 beta driver. The AMD tweaking tools not really good, it screw up with the clock speed becos ati powerplay will switch the whole card into 500/750, but u tweak it, u are tweaking the idle clock to that desired one.

Added on July 4, 2008, 9:53 amI am getting wat driver prob when i ran 3dmark06, but i dont have that prob with 3dmark vantage T.T, is it becos of 8.7beta?

Added on July 4, 2008, 10:04 amI cant run 3dmark06 at 700/1100, keep on say wat ati driver got error, so i ran it at 690/1100.
3dmark score: 11540
SM2.0: 5044
Sm3.0/HDR: 6113
CPU score: 2334

This post has been edited by ben3003: Jul 4 2008, 10:04 AM

Sanko

Jul 4 2008, 03:49 PM

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ben, care to run everything stock just to compare. my score with coolice gap is too big. no idea what i'm doing wrongly. 3DMark06 only.

This post has been edited by Sanko: Jul 4 2008, 03:50 PM

ben3003

Jul 4 2008, 03:57 PM

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Kk, i try.

Added on July 4, 2008, 3:57 pmNow my card 700/1100 scan artifact got artifact one, wah so unstable one this card.

Added on July 4, 2008, 4:10 pmi got 10914 mark only, sm2.0 4739, sm3.0/hdr 5717, CPU 2256. 3dmark depend on CPU one, ur CPU good, ur sm2.0 and sm3.0/hdr mark sure shoot up one. U wan see see 3dmark vantage.

Added on July 4, 2008, 4:32 pmStock vantage score:

P5821, GPU 6415, CPU 4556

This post has been edited by ben3003: Jul 4 2008, 04:32 PM

ah_khoo

Jul 4 2008, 04:53 PM

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QUOTE(ben3003 @ Jul 4 2008, 03:57 PM)

Kk, i try.

Added on July 4, 2008, 3:57 pmNow my card 700/1100 scan artifact got artifact one, wah so unstable one this card.

Added on July 4, 2008, 4:10 pmi got 10914 mark only, sm2.0 4739, sm3.0/hdr 5717, CPU 2256. 3dmark depend on CPU one, ur CPU good, ur sm2.0 and sm3.0/hdr mark sure shoot up one. U wan see see 3dmark vantage.

ati never guarantee that 4850 can run 700/1100 for all 4850 rite? i think heat is d main problem for 4850, if u wanna oc, make sure u do ya homework 1st, in this case, cool d heat monster...

most stock cooler are known for slow fan speed, u gotta change it even ur not doin any overclocking as d default speed is not sufficient enough to cool d core.

This post has been edited by ah_khoo: Jul 4 2008, 04:57 PM

ben3003

Jul 4 2008, 05:10 PM

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Lol'ed at ur statement, i am running with accelero s1, the max i can reach when LOAD 3dmark vantage is 48c.

Silverfire

Jul 4 2008, 05:18 PM

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How many stream processors does HD4850 have?

ah_khoo

Jul 4 2008, 05:24 PM

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QUOTE(ben3003 @ Jul 4 2008, 05:10 PM)

Lol'ed at ur statement, i am running with accelero s1, the max i can reach when LOAD 3dmark vantage is 48c.

my bad, didn't see that earlier.

if that's d case it's volt mod time for u if ur aimin for higher clock.

This post has been edited by ah_khoo: Jul 4 2008, 05:26 PM

ben3003

Jul 4 2008, 05:56 PM

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it's ok

, Artifact problem can be solved by tune up the voltage?

Added on July 4, 2008, 6:02 pm@Silverfire,

It has 800sp AFAIK while 3870 has only 320sp.

This post has been edited by ben3003: Jul 4 2008, 06:02 PM

pikacu

Jul 4 2008, 06:03 PM

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QUOTE(Silverfire @ Jul 4 2008, 05:18 PM)

How many stream processors does HD4850 have?

800SP

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