*** Official Radeon HD5800 Series Overclocking Thread ***

[sentlon]

anyone can help me where can i download the Asus 5850 bios ?
thanks

[flopper]

That min fps got a huge bump. To much increase for only 125 MHz that cant be right. If i'm not mistaking COH had the same engine as DOW II. I use DOW II for benshes i have seen the fps variate a lot. What i do is do 3-5 runs and add all min fps numbers and divide it by the number of runs. + if i see that the min fps is lower then normal i will redo that run.

yea, it will vary, not doing science here.
same conditions apply, same hardware, same settings, one run.
Wasnt interested in nitpicking exactly as this I just do for fun.
Dont like to benchmark

[Lightman]

Really nice HD5850 OC Flopper!

This is a card to buy if you want to save over $100! I must admit that I'm not even OCing my HD5870 for gaming at 1920x1200! I only oced my card for fun and few quick benches!
The only game which might need OC is Crysis, but I will play it again after finishing Heroes of Might and Magic V I'm playing now ...

[Oese]

I'm not sure if you can say undervolted, because my card has 1.125V stock as well! This might be only a feature for Sapphire cards or newer batches are already better yelding and they lowered vGPU.

If you want lower power consumption try my BIOS from TPU and see for yourself

EDIT: This also can be a reason why some of the reviews are claiming that HD5870 is louder than HD4870 and others are saying opposite.

maybe^^

[Robin BP]

From Beyond3d.

Quote:
Originally Posted by Lightman View Post
Going back to card loudness I've noticed that some models are using 1.125V for GPU under load (like mine Shappire) and other are using 1.165V under load. This might explain quite big variations between different reviews in power consumption tests under load ...
Actually, it does the opposite! We scale the voltage based on leakage, so the higher leakage parts use lower voltage and the lower leakage parts use a higher voltage - what this is does narrow the entire TDP range of the product.

Dave Baumann
Actually, it does the opposite! We scale the voltage based on leakage, so the higher leakage parts use lower voltage and the lower leakage parts use a higher voltage - what this is does narrow the entire TDP range of the product.

Everything is qualified at worst case anyway; all the TDP calcs and the fan settings are completed on the wors case for the product range.

[jaredpace]

I think 5870 Cypress XT's can require different 3D voltages to keep stability at 850mhz, and that this is why we're seeing stock volts anywhere from 1.1v to 1.17v for 5870s.

[Lightman]

From Dave Baumann response I've got at Beyond3d it looks like overclockers should look for cards with 1.125V stock 3D because they will clock better albeit using more power, just like AMD Phenom II TWKR edition!

[Gaul]

i can change fan ? always 1000 rpm/25 % ??

[Chickenfeed]

I think 5870 Cypress XT's can require different 3D voltages to keep stability at 850mhz, and that this is why we're seeing stock volts anywhere from 1.1v to 1.17v for 5870s.

That would explain a lot.

I've actually had issues at 900 at stock volts in GTA ( hard lock ; funny thing is Crysis doesn't lol ) I am not sure how high I can get without upping the voltage but I am content with the card as is now all around so I won't press the matter anytime soon.

My XFX has a bios with 3d voltage of 1.1625 by the way. I might try manually lowering to see how low it scales at stock core clock out of curiosity.

[Gaul]

900 / 1300

[jaredpace]

Yes, it's basically being confirmed by Dave, "We scale the voltage". Aka, "we bin the chips and assign 3D voltages accordingly". It's similar to VIDs - not like every Q6600 clocks the same on the same Vcore. Really, you want a 5870 that runs VERY cool while clocking upwards of 950-1000mhz on a stock 3D voltage of ~1.12-1.13v. You might have to sample 20 or 30 different boards until you find one like that! :p Heres to the guys that have a 3D volt of 1.125 in bios and can go above 950mhz with it.

900 / 1300

Dual core cpu without gpu Physx.. don't expect much from 3DV.
Nice GPU score though. :p

Got my 5850.
His brand.
...

At 0xAA overclocked 850 on core added the following increases fps (58 to 71 min fps) (115 to 127fps average) 231 to 254 max fps)

Flopper, what volts for 850mhz on your HIS 5850?

[Dami3n]

My asus has 1,125v in 3D mode

[Oese]

so i have bad card 1.164v stock

[Chickenfeed]

I wouldn't say bad, it just needs more overvolting for higher clocks thus higher fan speed / better cooling. I can get 1ghz core but the voltage increase isn't worth the heat or noise ( performance doesn't justify it ) so I'm sticking with 900 tops. I still haven't tried reducing vcore for 850 to see if mine really does need 1.162 or not. XFX may have done them in batches or merely just decided to set all units this high for the sake of stability. Anyone with an XFX 5870 have a lower default 3D voltage than 1.162?

If anything between the 5850 having disabled shader clusters and them binning voltages, my guess is yields aren't that great. I'm really getting the feeling now that the X2 will more likely run slightly north of 5850 clocks due to both power and yield reasons( although still 1600sp)

And that is a nice score Gaul, you still got 100gpu score than me at same gpu clocks so that E8400 is holding up very nicely. Screw vantages cpu score, its a biased piece of crap.

[Oese]

yeah think so too, it seems that some cards vendors just got all cards out at 1.162v, others maybe binned or idk...

dunno if 1.3v is too much overvoltage?

950@1.2v is my sweetspot, probably 900@1.125v i could try.. but 1ghz core is an achievement so i test it for long term stability now i decided

[flopper]

Flopper, what volts for 850mhz on your HIS 5850?

running set 1.187
havent tested if I could go lower, just set it, and run benches, played bf2 all evening, but the game dont tax the card much heh



well game time is over, lets see what the card can do then.

[GLENBOY]

well game time is over, lets see what the card can do then.

now thats more like it you're lucky to have one so soon there are none anywhere and no results on hwbot, get a score up you'll be no.1 in the world with a 5850 on hwbot
http://hwbot.org/hardware/videocard/radeon_hd_5850

also you want ht enabled for vantage thats why you cpu score is low, the cpu score should be well over 20000 if you are on an i7, with ht on i reckon thats about a 16.5k score

[jaredpace]

just saw this post from zbogorgon. he's using an Ek full cover waterblock at 1120mhz / 1.36v. Is card is also default 850 / 1.125v. :O

[Chickenfeed]

Pretty impressive but man that is some voltage. Water only territory indeed. 1.36 idle for 200x20 scares me though hehe. I'm assuming cpu is on water as well.

Looks like the EKs will do a fine job.

[Crow-]

just saw this post from zbogorgon. he's using an Ek full cover waterblock at 1120mhz / 1.36v. Is card is also default 850 / 1.125v. :O

Great score

[B-Shot]

Here is a run on a AMD platform w/XFX5870@900/1300@1.16v.

Havent had any heat issues or lock-up's during gaming.
Wish I got the ASUS instead, didnt feel like waiting lol.

[Mech0z]

Is there any point in going asus if you can just flash any card afterwards? Do they have nicer 3d voltage? They are like 30$ more expensive in my country just wonder if those 30$ are well spent

[B-Shot]

I guess not really MechOz, all the 5870's were the same price when i bought my XFX. I kept getting errors with Atiflash 3.75, but i try again later.

[jaredpace]

I guess not really MechOz, all the 5870's were the same price when i bought my XFX. I kept getting errors with Atiflash 3.75, but i try again later.

try -fs as oese recommended

[Gaul]

@ ALL = ANYONE has same trouble with me ?.....i can't use manual FAN SETTING , no matter on WIN 7 64 bit ( 8.66 RC6 ), even XP 32 bit ( cd installer )....

with 2 OS, i can push more than 20%, even i push to 100%, its still 20 %, cek THE RPM........THANX ALL

SEE cat say 100% but GPUZ shows only 950 rpm and STILL 20 % FAN SPEED...



WELL IT IS DEFACT ???? 5870 ? or flash to ASUS BIOS will HELP ??

anyone plzzzz need advice here....