Unleash the Gladiator (RV670): 862MHz GPU Clock Limit Fixed

[tiger8312]

I did the bios mod using atiflash
to be specific (x:\atiflash -p 0 -f hd3870.bin)
Used the RivaTuner v.2.06 to overclock...
Without the mod I was able to use it up to some what 850/1200
but now that I've done the mod I can use around 860~865
if I set it to 870 and run the 3DMark demo (return to proxycon)
then the system shows artifacts and the video stops...
using the autotune it configures the core clock up to 872 and the memspeed to 1376 which turned out to be useless...
overclocking the memory seems to be the hard part and gives little performance boost.

My system:
M/B: AW9D-MAX (with beta bios 1.6)
RAM: Super Talent
Power: 450Watt (not a brand)

Oh! the cooling! using the stock cooler... T.T

Does the type of mainboard matter in overclocking graphic cards???

Can't seem to boost further...

What kind of tools do you test with to check if the overclocked settings are stable or not?

and another question...
Does ATI Tool 0.26 work right on 3870???
coz mine doesn't

and another question...
installing multiple overclocking utilities like RivaTuner and ATITool cause a problem?

I can't seem to sort out what the problem is?

Maybe could be the power or the heat...

Why don't we connect the fan power supply to a location other than on the Video Card?
If I run a test that uses the GPU aggresively I can sense the difference in the RPM with my ear...
I think the fan is consuming a portion of the watt that is needed by the GPU...

[tiger8312]

Ok, catalyst auto tune just set it to:

CLocked HD3870.jpg


It shows 872 / 1376 in catalyst which is pretty much max u can do on it, i reckon another program could get it quite a bit higher tho

Just wanna confirm that I've got the same result using the autotune.
On the specific clock 3DMark and games hang up...

[tiger8312]

You seem to be using the core clock @891 and the mem @1332...
Does that actually work???

sorry about the mem fixed it... -_-;;

[GAR]

mem is at 1332, look closer.

[Spuggi]

Right
And yes, it works

[Sampsa]

835/1321 MHz seems to be the limit for my Radeon HD 3870 sample from AMD (Non-qualification sample).

Cleaned original "thermal paste" and added my own, also adjusted fan speed to 100% from Rivatuner and now running 3DMark06 @ 857/1323 MHz. I'll update the bios tomorrow and see if I can push it even more.

[BeardyMan]

Cleaned original "thermal paste" and added my own, also adjusted fan speed to 100% from Rivatuner and now running 3DMark06 @ 857/1323 MHz. I'll update the bios tomorrow and see if I can push it even more.

coudl you perhaps, when having the time, check on subzero work as well?

need an replacement for my coldbugging X1800XT

[Helmore]

Cleaned original "thermal paste" and added my own, also adjusted fan speed to 100% from Rivatuner and now running 3DMark06 @ 857/1323 MHz. I'll update the bios tomorrow and see if I can push it even more.

Would it be possible to push your memory to 1337 MHz., just because it looks sweet

[ColonelCain]

Wow, this problem has been fixed quickly! Can't wait to see results on water.
Keep it up!

[fhpchris]

03 -54K+, 05 -25K+, 06 -16K+ with a E6850 @ 4Ghz, cards at 860/1301, hotfix drivers.

Eew

MY 8800GTX SLI with a 4ghz PENTIUM 4 631 runs 54k 03 :[

[PhilDoc]

Couple of quick questions.

Is Riva Tuner the only utility supporting the 3870 atm? Tried latest Ati Tool beta I could find but no luck.

Is there anyway to change the increment Riva Tuner increases the Core? Right now it seems to be at 13.5. I can bench 891 on the core, but 904.5 is a no go. Would be nice to set it some where in the middle. Thanks

[tiger8312]

Couple of quick questions.

Is Riva Tuner the only utility supporting the 3870 atm? Tried latest Ati Tool beta I could find but no luck.

Is there anyway to change the increment Riva Tuner increases the Core? Right now it seems to be at 13.5. I can bench 891 on the core, but 904.5 is a no go. Would be nice to set it some where in the middle. Thanks

I've tried ATITool 0.27 beta2, ATI Tray Tools 1.3.6.1042 but didn't work properly...

The only tool that works is RivaTuner 2.06 which in fact is not programmed to support rv670(HD 3870) but does work fine overclocking....

[PhilDoc]

I've tried ATITool 0.27 beta2, ATI Tray Tools 1.3.6.1042 but didn't work properly...

The only tool that works is RivaTuner 2.06 which in fact is not programmed to support rv670(HD 3870) but does work fine overclocking....

Yep, same here tried the other two also. Tray Tools just locked my system when trying to set the clocks. Either way not too bad with the bios change and a ThermalRight V2. Benched 891/1400. Should be interesting when there's full support and some voltage control. Thanks for replying.

[HousERaT]

Eew

MY 8800GTX SLI with a 4ghz PENTIUM 4 631 runs 54k 03 :[

I'm not sure what the problem is. All I can tell you is with the current drivers 03 benches terrible if you're not using a Quad Core.

[Gautam]

I'm not sure what the problem is. All I can tell you is with the current drivers 03 benches terrible if you're not using a Quad Core.

Maybe its your 4x PCI-E lane limiting things.

[Lightman]

Eew

MY 8800GTX SLI with a 4ghz PENTIUM 4 631 runs 54k 03 :[

Wired! My X2 6000+@3500MHz runs 61100

Here is detailed info:

3DMark Score 61108 3DMarks
GT1 - Wings of Fury 628.3 FPS
GT2 - Battle of Proxycon 513.4 FPS
GT3 - Troll's Lair 413.4 FPS
GT4 - Mother Nature 466.6 FPS
CPU Score 0 CPUMarks
CPU Test 1 0.0 FPS
CPU Test 2 0.0 FPS
Fill Rate (Single-Texturing) 12738.9 MTexels/s
Fill Rate (Multi-Texturing) 25752.1 MTexels/s
Vertex Shader 222.1 FPS
Pixel Shader 2.0 563.2 FPS
Ragtroll 233.7 FPS

PS. That run was @860/2250 both cards ....

[tvdang7]

think these cards will allow software voltage controls in the future.

[HousERaT]

Maybe its your 4x PCI-E lane limiting things.

no, I don't think so...... if you look at the HWbot 2005 I'm within 300 marks of the guy ahead of me but in 03 I'm down by 15,000. Somethings not right and I'm thinking it must be the drivers.

[Gautam]

05 is nothing like 03. The only test in 05 that even significantly changes between dual card and single is GT3. 03 is completely GPU bound. 05 is a system test and 03 is a GPU test. If it were drivers, your score would be low in everything, but the only difference is the nature of the bench.

[fhpchris]

I didn't see that you had a 4x card, that will clearly limit things...

[tbone8ty]

i apoligize if im asking a question thats been already answerd but does this bios fix work on the 3850?


so whats the average OC u guys are getting for the 3850's core/memory?

[Cylus]

Anyone have a good way of controlling the fans for both cards in crossfire? Setting up a fan control scheme with RivaTuner was easy enough but it only covers the card that you're currently monitoring. The bios auto fan settings seem a bit loose to me (60C->30%, 65C->40%, 70C->50%, 75C->060%, 80C->70%, 85C->80%, 90C->89%, 98C->100%). Since the fans are fairly unnoticable 50/55% and under (in my case, at least), it'd be nice to kick em in earlier than 60C.

On a side note, my 3870 crossfire 3dMark '06 scores were virtually the same between Vista Home Premium x64 and XP x64 with the 7.11 drivers when tested at the same core speeds; Crysis hotfix drivers were hard resetting my machine so no idea on them. XP does seem to allow me to bump my cores up higher.

[STEvil]

same horrible fan speeds as what the x1950xtx had...

tiger 8312 - what CPU do you have? Sounds like you've got that 450w power supply running pretty hard.

[Miwo]

has anyone tried the voltage modded bios that Pitya posted?
I am thinking it may work, but can't test it until I get back from Thanksgiving

Basically at address ADC0 - AE50, he changed "2F 05" to "61 05"
If you invert the bytes, the original read 052F, or 52F. If you punch this in calculator and do HEX->DEC, this reads 1.327, or the readout for stock 3D Voltage. Changing this value from "2F 05" to "61 05" reads 0561... or 1.377v.

Even though the checksum is going to be wrong, it might still work because this bios voltmod technique was successful on the 2900cards by simply modifying these values.



In the event that you do brick your card, I am fairly sure that you can still "blind flash" it back. Video cards have always been like that, right? I remember doing that to reflash my old 9700Pro way back that I thought I killed through a bad flash

[tiger8312]

same horrible fan speeds as what the x1950xtx had...

tiger 8312 - what CPU do you have? Sounds like you've got that 450w power supply running pretty hard.

It is said on the manual to use a 500W or higher PSU though I speculated that the spec they are giving is way too high for standard purpose... just a way to avoid the blame when the graphic card gets burned with the PSU...

My CPU is E6300 @ 2.7GHz and the RAM is running at 482MHz...
couldn't get my RAM to run at different ratio so used FSB : DRAM spec = 3:4
CPU = 386*7 = 2.7GHz
Sucks...

I roughly calculated the total energy consumption used by my system and it should be around 270Watts even with the graphic card.

Do you think PSU is holding me from further overclocking the video?

What about the temperature?

Spuggi says that he/she is using the stock cooler and with the help of the BIOS overclocked it up to GPU@891Mhz and MEM@1332Mhz...

I could do that too but system either crashes or give out a VPU recovery session.

I have stabilized it the GPU@840
further going causes VPU recovery or crashes after exhaustive use...

besides that how do yo know the clock is stable or not?
I used ATITool 0.27 B2 and turned on the 3D renderer (Cubic Fur) and scanned for artifacts
Is there a better way to see if your clock is stabilized aside fromt the above mentioned method?