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11-20-2007, 01:25 AM
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#1
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Xtreme Legend
Join Date: Nov 2003
Location: Helsinki, Finland
Posts: 1,101
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Unleash the Gladiator (RV670): 862MHz GPU Clock Limit Fixed
As some of you may have noticed there is a strange limit in GPU frequency on RV670 based card.
The maximum stable frequency seems to be around... exactly at 862MHz...
I have seen some wild speculation about a driver problem or a GPU limitation.
All wrong.
Lets put it this way:
There is a mean bouncer standing outside of your favorite bar (863MHz).
Bouncerīs name: is PLL VCO Divider
The frequency of GPU internal PLLs are changing with GPU frequency.
At certain points the PLL must change itīs divider to maintain the frequency at correct range.
If the divider is not changing for some reason the frequency of the PLL will raise too high and it will flip.
This is what happening at 862MHz.
It is pretty much the same thing on cars.
To reach higher speeds you need to put in a bigger gear.
The problem can be easily fixed by updating the new bios.
Unfortunately I donīt have a bios for HD 3850 cards, but it should also be available soon.
HD 3870 PLL VCO Fixed Bios v010.071
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11-20-2007, 01:30 AM
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#2
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OC Jedi
Join Date: Jan 2005
Location: Germany
Posts: 5,489
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Great find! You are a genius
I can send you a 3850 BIOS if that helps you.
__________________
オタク
"Perfection is a state you should always try to attain, yet one you can never reach." - me =)
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11-20-2007, 01:33 AM
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#3
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Xtreme Legend
Join Date: Nov 2003
Location: Helsinki, Finland
Posts: 1,101
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Quote:
Originally Posted by Fr3ak
Great find! You are a genius
I can send you a 3850 BIOS if that helps you. |
The problem was fixed by AMD graphics department, not by me
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11-20-2007, 01:41 AM
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#4
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HWbot Crew / X.I.P.
Join Date: Jan 2006
Location: Finland/Tampere
Posts: 1,516
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Great find and thanks for sharing this information.
P.S Missäs mahtaa olla minun XFX680i? 
__________________
AOCC2008 WW #5, MOA2008 EU #5, GOOC2008 WW #1, GOOC2009 WW #3, MOA2009 EU #4, MOA2009 WW #4, GB TweaKing #"5" (4,10), Ditech International OC #2 / #2, ASUS ROG OC Showdown # semifinals
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11-20-2007, 01:47 AM
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#5
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OC Jedi
Join Date: Jan 2005
Location: Germany
Posts: 5,489
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Thank you for posting anyway
I just didnt think AMD would fix something that helps us to overclock their cards better 
__________________
オタク
"Perfection is a state you should always try to attain, yet one you can never reach." - me =)
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11-20-2007, 01:49 AM
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#6
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Xtreme Legend
Join Date: Sep 2002
Location: Finland
Posts: 1,688
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Great! Now I just need my Radeon HD 3870s
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11-20-2007, 02:33 AM
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#7
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Xtreme Workhorse
Join Date: Apr 2005
Location: The Netherlands
Posts: 4,490
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Now we need to have proper BIOS flashing tool
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11-20-2007, 02:36 AM
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#8
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Xtreme Mentor
Join Date: Apr 2005
Location: Finland
Posts: 3,407
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OMG now I'm looking forward to O/C results. 
__________________
IntelŪ Core i7-860 @ 4.1 GHz | Gigabyte GA-P55-UD5 | G.Skill Ripjaws 2x2GB @ DDR3-2340 9-10-9-24 | EVGA GTX 280 1GB @ 729/1512/2592 MHz | Corsair HX 750W | ViewSonic VX2268wm 120Hz LCD | CoolerMaster Hyper 212 Plus | Creative SoundBlaster Audigy w/ kX Audio drivers | Logitech X-530 5.1 | Sennheiser HD 212 Pro | Logitech MX-518 | Everglide Titan MonsterMat | Windows XP Professional SP3 | Windows 7 x64 Professional | HDD: 4x300GB, 500GB, 640GB, 750GB & 1.5TB
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11-20-2007, 03:02 AM
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#9
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Champion
Join Date: Jul 2003
Posts: 4,636
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Great work Stilt
Now if they could just fix the 1143MHz memory limit (2900's) as well.
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11-20-2007, 03:04 AM
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#10
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Administrator
Join Date: Jun 2002
Location: Belgium
Posts: 4,832
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As Cooper asked, which flashing tool can be used for this card?
Might be usefull for current (and future) 3870 owners, so that they don't use the wrong tool and possibly destroy their cards.
__________________
Rig #1
Gigabyte UD3P Rev. 1.0 Bios F4
E8600 @ 4400Mhz, 1.296V
2x2Gb OCZ1066 LV Blade
BFG GTX280 OC
Coba Nitrox 750W
Watercooled with HK 3.0 CU, EK-FC280GTX, PA120.3, Laing Ultra with XSPC top
Rig #2
DFI UT P35-T2R (0317 bios)
E8200 @ 4000 (1.216V) / 4100 (1.248V) / 4200 (1.296V) / 4300 (1.344V) 
2x2Gb Chaintech Apogee GT PC2-8500
Powercolor 4870
Corsair 520HX
Watercooled with HK 3.0 CU, EK-FC4870, Feser tripple, Laing Ultra pump
Quote:
Originally Posted by Movieman
I've got Supermicro boards that lasted longer than one of my marriages!  |
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11-20-2007, 03:04 AM
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#11
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Xtreme Addict
Join Date: May 2004
Posts: 1,616
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This is very good news, thank you The Stilt
Can't wait to see some updated OC results.
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11-20-2007, 04:19 AM
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#12
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Xtreme Enthusiast
Join Date: May 2003
Location: Randolph, NJ
Posts: 959
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This is great news to wake up to.
When I get home from work today, I will flash my 3870 with this BIOS (which tool to use right now?). I got my card yesterday, and the first thing I did was replace the Stock Cooler with an Accelero S1, and strapped a 140mm Yate Loon to it. I've been running RTHDRIBL overnight at 857/1200 MHz, and my Load Temperatures are 40C with this cooler. Will post more pics and results after I get back from work today
__________________
AMD Rig
720BE @ 3.65GHz 1.43v / MSI GD70 / 4GB OCZ Animal DDR3 / vModded 4850 @ 800/1050
Coolermaster CM690 + Z600 Cooler / Corsair 620HX / Dell Perc 5i + 4x32GB JMicron MLC SSD / 1TB WD Black
Intel Rig
E8300 / DX38BT / 4GB DDR3 / HD3850 / 3x 7200.10 Matrix Raid / Sonata III / Earthwatts 500W
Audio / Video
Samsung 37" 1080p LN37A550
Source: HT Omega Claro, Coax out to Denon (multichannel), SPDIF to Zero DAC (stereo)
Receivers: Denon AVR-788, Sony STR-GX900ES
Speakers: KEF IQ3s + KEF Q8S(surround duty)
LFE: Energy S10.3, 2x Aura Pro Bass Shakers mounted on my office chair
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11-20-2007, 04:52 AM
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#13
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Xtreme Enthusiast
Join Date: Mar 2005
Location: Imladris
Posts: 958
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Now, let's see how high these things can clock.
__________________
The little air system that could.
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11-20-2007, 05:26 AM
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#14
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Registered User
Join Date: Jun 2007
Location: Hamburg
Posts: 25
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tried to flash with winflash from bartpe disk an atiflash in dos from bootdisk, winflash says "no ati gfx detected" and atiflash says "ERROR 0FL01 ADAPTER NOT FOUND"
So any ideo how to flash the damn bios? 
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11-20-2007, 05:27 AM
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#15
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Xtreme Addict
Join Date: Aug 2007
Posts: 1,308
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Like has already been mentioned; posting the BIOS is one thing but actually flashing the card is another.
So many responses and a BIOS flash tool has not been posted.
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11-20-2007, 05:29 AM
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#16
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Registered User
Join Date: Jun 2007
Location: Hamburg
Posts: 25
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It was worth a try, so we know it won't work with atiflash and winatiflash :P
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11-20-2007, 05:36 AM
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#17
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Xtreme Mentor
Join Date: Nov 2006
Location: Spain, EU
Posts: 2,529
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Yeah, where is that utility 
__________________
Friends shouldn't let friends use Windows 7 until Microsoft fixes Windows Explorer (link)
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11-20-2007, 05:47 AM
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#18
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Xtreme Enthusiast
Join Date: May 2003
Location: Randolph, NJ
Posts: 959
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Quote:
Originally Posted by Spuggi
tried to flash with winflash from bartpe disk an atiflash in dos from bootdisk, winflash says "no ati gfx detected" and atiflash says "ERROR 0FL01 ADAPTER NOT FOUND"
So any ideo how to flash the damn bios? |
Just curious, but what version of ATI Winflash / ATIFlash did you try to use? http://www.techpowerup.com/downloads..._Flashing/ATI/ has versions dated 9/10/2007, Winflash 1.26.1 and ATIFlash 3.43.
The versions linked to in the bios flashing thread in the mods section here seem to be a lot older
__________________
AMD Rig
720BE @ 3.65GHz 1.43v / MSI GD70 / 4GB OCZ Animal DDR3 / vModded 4850 @ 800/1050
Coolermaster CM690 + Z600 Cooler / Corsair 620HX / Dell Perc 5i + 4x32GB JMicron MLC SSD / 1TB WD Black
Intel Rig
E8300 / DX38BT / 4GB DDR3 / HD3850 / 3x 7200.10 Matrix Raid / Sonata III / Earthwatts 500W
Audio / Video
Samsung 37" 1080p LN37A550
Source: HT Omega Claro, Coax out to Denon (multichannel), SPDIF to Zero DAC (stereo)
Receivers: Denon AVR-788, Sony STR-GX900ES
Speakers: KEF IQ3s + KEF Q8S(surround duty)
LFE: Energy S10.3, 2x Aura Pro Bass Shakers mounted on my office chair
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11-20-2007, 05:49 AM
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#19
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Xtreme Addict
Join Date: Aug 2007
Posts: 1,308
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I don't think the Techpowerup version is set up to detect the RV670-based cards.
The best thing to do is to go through DOS IMO....
Last edited by SKYMTL; 11-20-2007 at 05:51 AM.
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11-20-2007, 05:53 AM
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#20
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Registered User
Join Date: Jun 2007
Location: Hamburg
Posts: 25
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hiho,
i tried atiflash 3.43 from dos boot cd, getting the error, now i'll try the newer winflash version, but i don't think it'll work
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11-20-2007, 05:56 AM
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#21
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Xtreme Addict
Join Date: Aug 2007
Posts: 1,308
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Funny....BIOS posted....no way to get it to work. So close, yet so far away. :P
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11-20-2007, 05:57 AM
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#22
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Registered User
Join Date: Jun 2007
Location: Hamburg
Posts: 25
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Ok, newest Winflash also not working ^^
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11-20-2007, 05:59 AM
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#23
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Xtreme Legend
Join Date: Nov 2003
Location: Helsinki, Finland
Posts: 1,101
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I will upload the flasher as soon as I have the green light...
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11-20-2007, 05:59 AM
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#24
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Xtreme Addict
Join Date: Aug 2007
Posts: 1,308
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Looks like we will need updated software then. Are you under XP or Vista?
Maybe you should have waited to post the BIOS then too? You got all our hopes up. 
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11-20-2007, 06:00 AM
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#25
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Registered User
Join Date: Jun 2007
Location: Hamburg
Posts: 25
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look above your post
i use xp
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