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 ATi Radeon HD 3850 & 3870 Single / CF / CFx, OC discussion thread~

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clayclws
post Dec 2 2007, 11:41 AM

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It's because of the motherboard. The P35T-DQ6 does not offer dual 16x PCI-Ex 2.0...Maybe should replace motherboard with X38 or X48, when there's enough resources for that.

Added on December 2, 2007, 11:43 amAnyone up for setting Dual HD3850 512MB CF-X? I surely want to see the results as HD3850 512MB seems to be the card that offers the best bang for the buck at the moment.

This post has been edited by clayclws: Dec 2 2007, 11:43 AM
clayclws
post Dec 6 2007, 10:54 AM

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QUOTE(rlhc17 @ Dec 4 2007, 11:54 AM)
my ati 3870 with fitted with TR-03 biggrin.gif
This is my 4th gfx card that been using this cooler from NV 7900GT - ATI 1950XTX - NV 8800GT - ATI 3870 &.................
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TR-03? Is it Thermalright HR-03?
clayclws
post Dec 6 2007, 02:09 PM

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Thermalright HR-03 and the newer HR-03 Plus is a 3rd party cooling solution...the brand is Thermalright. You can see it first hand at PC-Zone at Lowyat.
clayclws
post Dec 9 2007, 08:41 AM

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QUOTE(irenic @ Dec 9 2007, 07:27 AM)
i wonder why the score seems a bit low for crossfire.. neway what is his result with only single 3850?
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Maybe he forgot d Crossfire bridge? blink.gif Ok, just cracking a lame joke... tongue.gif
clayclws
post Dec 10 2007, 01:09 AM

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QUOTE(intothefantasy @ Dec 10 2007, 12:07 AM)
my fren single card get around 7.8k....we put the xfire bridge ma...need put 1 or 2? we put 1 only...i also just put at my maximus
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Only one bridge is required. I'm just being lame and silly.
clayclws
post Dec 13 2007, 05:24 PM

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Trying out the Spider platform? What mobo will you be using?
clayclws
post Dec 14 2007, 06:24 PM

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Not much progress in here. Guess few people got HD38x0 cards?
clayclws
post Jan 3 2008, 01:37 PM

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QUOTE(rlhc17 @ Jan 3 2008, 01:33 PM)
Highest benchable HD3870 with pencil mod to up to 1.45vgpu speed smile.gif
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Is it usable for games? Stressed it yet? You are still using the HR-03 right? Which mod did you use? New or old?

This post has been edited by clayclws: Jan 3 2008, 01:40 PM
clayclws
post Jan 9 2008, 10:04 PM

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QUOTE(AoiNatsume @ Jan 9 2008, 09:32 PM)
here's my 1k+ coreclock speed.

It takes abt 1.5vcore to achieve this speed bench-able, the temps never above 44c on load... but i dare not pump more. This is a 55nm core... anything more it might be dead lolz.

well... currently i have some issue with my motherboard memory timings and vcore, with proper tuning i am very sure im able to get at least 12-13k. You would notice my last timing on the rams damm cacat, this is an issue with my K9A2 Platinum, currently still discussing with MSI support team.

Will update soon once i am able to run my motherboard to its full potential icon_rolleyes.gif
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Great core timing. Can you play games with it?
clayclws
post Jan 11 2008, 09:58 PM

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QUOTE(LExus65 @ Jan 11 2008, 07:03 PM)
btw guys which bios is the best for sapphire card, thinking of flashing mine to see whether can get better performance
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Try your card out. Each and every card has its own limit, even though it is made by the same manufacturer. Then flash the BIOS yourself after you found the sweet spot for OC-ing.
clayclws
post Jan 12 2008, 01:48 PM

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QUOTE(noobianz @ Jan 12 2008, 09:25 AM)
durr..i tried out the new cat8.1beta... there is no difference between 8.1 and 7.12 in term of performance...

3870@Cat 8.1
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You do realize that not all drivers will enhance performance, right? Also, Cat 8.1 is supposed to feature the support for lower HD3xxx series and R680. And you tested on 3dmark06...tried gaming?


QUOTE(shaunk86 @ Jan 12 2008, 01:29 PM)
The best stable result so far on a spider platform.

I tried CF 2 3870 b4, but i only c a 2K points difference. Izzit normal? hmm.gif
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Flash your VGA BIOS. Refer first page. Then, try OC to 880/1333. It should be stable for most HD3870. And your Phenom...need more OC lah...

This post has been edited by clayclws: Jan 12 2008, 01:51 PM
clayclws
post Jan 13 2008, 10:24 PM

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QUOTE(Doom @ Jan 13 2008, 10:19 PM)
What are the benefit of flashing BIOS on 3870 .......

Does it boost performance increment on default setup ...
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You have to flash it coz it had a 860MHz core limit. Go even 1MHz beyond it and your card will fail.
clayclws
post Jan 14 2008, 03:45 PM

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QUOTE(dreaming @ Jan 14 2008, 02:03 PM)
@AoiNatsume
my card max out at 855Mhz/2700Mhz, i think i cant break > 860Mhz without flashing bios.
However until now i still dare not to flash the vga bios.
Btw, how many percent of the performance improvement you get from flashing bios to oc till > 900Mhz?
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900MHz is a possibility but not with stock cooler. I can get up to 900MHz stable on stock cooler with my HIS HD3870 but fan at 100% (damn noisy) and aircon room.


QUOTE(8tvt @ Jan 14 2008, 02:29 PM)
it's not about oc.. it's raise the fan speed so reduce the core temp..
90 to 60 is a big gap..
u need volt mode to oc >900
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You don't need volt mode if you have a good stable motherboard, PSU and cooler to achieve 900MHz.


QUOTE(silverbolt143 @ Jan 14 2008, 03:22 PM)
but bro if i just overclock the core and leave the ram untouch at 1126, i manage to run crysis and CMR without any problem at all....already tried all modded BIOS but the problem is still there cry.gif ....my default BIOS version is VER010.073.000.000.027243....

wonder if :
a) i didnt remove the last nvidia driver properly i.e. didnt use driver sweeper
b) my mobo is the culprit doh.gif  MSI K9N Ultra
c) my PSU is not enough to power-up my whole overclocked system...currently using 600watt silverstone strider, 40amp 12v rail...previously when i'm using an overclocked 8800gt and overclock my F3 to 3.2gig, the graphic terribly slow during 3Dmark06..only stable if downclock the proc to 2.9gig...i did the same thing while using 3870 (875/1250) but i need to downclock the proc further to 2.5g then it will be stable...
d) i need to reinstall the games since the problem arise only if i'm running game...i can run full 3Dmark06 at 860/1200 without any problem...the load temperature never goes beyond 70c...
e) i need to fresh install the windows rclxub.gif

appreciate any opinion  notworthy.gif  notworthy.gif
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a) is a possibility but quite unlikely.
b) is not a possibility.
c) means your overclocked CPU is not stable in the first place...nothing to do with your PSU. Run Orthos, SuperPI, MemTest, and Demo the entire 3dmark06 using the HIGHEST resolution your display monitor can support...if none of them crash, your CPU is stable.
d) is not a possibility.
e) is irrelevant unless you want to do a) the easy way.
clayclws
post Jan 14 2008, 04:42 PM

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QUOTE(AoiNatsume @ Jan 14 2008, 04:01 PM)
your solution E is not an option either, u can fresh install OS for a million times but whats the point of doing so when your system is not stable?

Anyways, 900Mhz is an easy job actually, but not likely on stock 1.33vgpu, @ 1.33v you may be able to run @ 900mhz but id guarantee that it would be unstable. The card itself isnt very hot to begin with, well.. just an assumption unless the stock HSF really sux. The first day i got the card, terus raped off the stock hsf sweat.gif

My card is currently running 999/1333 @ 1.4v rock stable continuous 7 hrs benching @ 45c full load.
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1. I did state that it is IRRELEVANT...read again.
2. You pencil vmod old or new way?


QUOTE(silverbolt143 @ Jan 14 2008, 04:04 PM)
thanks for the feedback

i did run and finished the followings:

1) Full 3dMark06 Pro 1.1.0 benchies and score 10200
    - Proc 3.2gig 1.3vcore
    - HD3870 at 860/1200

2) SuperPI 1M done at 28 seconds
    - Proc 3.2gig 1.3vcore
    - HD3870 at 860/1200

3) Crysis and CMR no problem at all
    - Proc 3.2gig 1.3vcore
    - HD3870 at 860/1126

all the above application and test running without any problems....HOWEVER:

4) Crysis - stuck at very first nvidia and intel ads
    CMR - crash either at menu screen or at the early stage of the race.
    - Proc 3.2gig 1.3vcore
    - HD3870 at 860/>1126
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Read my reply again. Run the DEMO and NOT the benchmark at HIGHEST RESOLUTION possible. Not at default 1280 x 1024. Unless that is your monitor's highest resolution.


QUOTE(silverbolt143 @ Jan 14 2008, 04:23 PM)
could be the reason i guess..currently running XP and using the latest CCC 7.12...
but dont really know bout the gamefix and window related hotfixes...

what's make me going mad is the symptom really weird one mad.gif just increase the VRAM then it's crash in game rclxub.gif
even myself at first felt so ashame to ask u guys  blush.gif laugh.gif
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I hope you are not using SP3...are you?
clayclws
post Jan 14 2008, 05:02 PM

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QUOTE(silverbolt143 @ Jan 14 2008, 04:57 PM)
My 19' LCD only can max 1280x1024...3dmark06 demo? have to search it first la coz currently dont have...
For XP just using SP2....

besides that, just for info....if i run 3Dmark06 at 777/1126 the score is 99++...but if i overclock the card to 860/1200, only get extra 300 score rclxub.gif ...
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[attachmentid=379161]
See the circled button? That's the demo...
clayclws
post Jan 14 2008, 05:25 PM

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Somehow the Demo stress the card more than its benchmark or running a game. I tried 900/1333 on Bioshock (max at 1920 x 1200), 3dmark06 (optimal at 1920 x 1200) and GoW (max at 1920 x 1200)...they all ran fine, except that the GPU was at 80+°C with fan at 75%. But when I start the Demo (optimal at 1920 x 1200), it fails somewhere in the middle of the firefly test. So I lowered it till 880/1333...baru it is fine.

Added on January 14, 2008, 5:26 pmPlus, I suggest everyone who runs at more than 900MHz to do the same...run the 3dmark06 demo at highest resolution...and not just the benchmark at default resolution.

This post has been edited by clayclws: Jan 14 2008, 08:53 PM
clayclws
post Jan 15 2008, 09:40 AM

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Remember the key words: DEMO and HIGHEST RESOLUTION.

Added on January 15, 2008, 9:42 amBenchmarking means nothing if you can't use the card properly. No need to compare with others. You have your own criteria to playability of games, optimal usage of resources, efficiency of processes...and of course, budget...

This post has been edited by clayclws: Jan 15 2008, 09:42 AM
clayclws
post Jan 15 2008, 09:19 PM

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QUOTE(sukhoi37 @ Jan 15 2008, 08:26 PM)
modded the HR03 Plus and fit into my 3870 biggrin.gif
i'm using 120mm yateloon fan on it.

idle: 44C load: 48C

stock idle : 58C load : 65C
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Great results. Looking forward to HR03GT~! wink.gif
clayclws
post Jan 15 2008, 09:49 PM

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Wow...I wanna do pencil mod as well, once I get a 3rd party cooler...
clayclws
post Jan 16 2008, 09:18 AM

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Hmm...I'll wait and see if R680 works on non-CF boards. If it does, I won't bother with HD3870 mod...if it doesn't, I'll go get a multimeter.
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