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

[Dark-Energy]

E8.4k will bottleneck 5xxx series cards - ive got a set up like that.

Like ppls say no point going for iX CPU's - better buy something like Q9XXX - im planing buy one and OC it.

My ASUS 5850 runs at 1050/5000 1.3V so there still planty room.

Yeah, an E8400 at stock will.

But mine is clocked up all the way to 4400 mhz, I don't think it will bottleneck. But I asked anyways to see what other people think.

[Musho]

Just played Crysis Warhead for 20 minutes @ 950/1300 with the stock cooler at the stock fan speed at stock volts. Seems to clock quite nicely, way better than my other POS 5870 which needs 1.2v to be stable at stock clocks (LOL!). I didn't want to be without a working computer, so I ordered another one :p Once the faulty 5870 comes back from RMA I'll run them in crossfire Will see if I can get it 1000/1300 game stable tomorrow. Wish me luck!

[Gaul]

Try Q9550 @ 4.5 GH

[RoadconeTuning]

i thought that the 5850 and 5870 chips were rated for 1250MHz, i just immediately set mine to 1250 since i was told that was their rating and assumed it was right... looks like i'll back it down to 1200 or 1150 to see...

[IN7OX]

Strange stuff. I can't seem to adjust vcore anymore now that I'm on 10.1. The option is grayed out in Afterburner.

Anyhow, if I don't touch the voltage I'm apparently stable to at least 800/1150 on this 5850. My previous results of crashing instantly at 850 using even 1.25V seem odd now. Any ideas what might be going wacky? I'm also miffed why I can't get to at least 1250 memory at default voltage when that's the stock rating for these memory chips. Are they fed less voltage than whatever they're rated at by default?

i also have this problem flashed with the asus bios and cant adjust voltage its greyed out also

[IN7OX]

had to use asus smartdoctor to change me voltage
got it running at 1010mhz gpu 1300mhz mem at 1.25volts on stock cooling
got ek full block coming so will test higher clocks when thats fitted

one strange problem im getting i have an onkyo nr906 connected via hdmi for my sound but when i turn it on as extended desktop with any clock over stock i get graphic glitches on me desktop and games when i turn the amp back off it stops
must be a driver issue

[purecain]

i also have this problem flashed with the asus bios and cant adjust voltage its greyed out also

just edit the voltages in rbe... no reason to mess around with 3rd party apps then...

[IN7OX]

is there a guide for using rbe looks a bit complicated

[Particle]

just edit the voltages in rbe... no reason to mess around with 3rd party apps then...

Does that actually work? As in, if I set the voltage higher in RBE than 1.0875V it'll actually work at that higher voltage? I wasn't sure where the limiter lies.

[w4tch0]

From what I know, for 5850's the voltage editing does work, but you absolutelly should not edit the voltages in "Clock info XX" columns. Use the "GPU registers" button and only edit voltages there. And I am not sure if 5700's are supported at all.

[purecain]

iirc you can set any voltage, theres a thread about it on here in this section...i'm still abroad and havnt used the latest version yet, i expect its just the same procedure as in previous versions. save your bios, open it in rbe, edit voltage registers and set clocks and overdrive limits+fan control... save and flash....

good luck particle...

[Frogeye]

@frogeye: just use atiflash and save your original bios, mod it with RBE v1.24, save new one, flash card(s).
edit: i have 5850.

is RBE done in Windows7 or do I load that on my USB boot drive? OK I see this is done in WIN7 now.

Also, will RBE let me make a copy of my original bios?

I've got a copy of the bios file that Zalbard posted for me http://www.xtremesystems.org/forums/...5&d=1257556756

I tried to create a USB bootable stick using and put the Atiflash program along with the above mentioned bios file that Zalbard pointed me to.

I want to get a copy of the bios that is on my card but I'm clueless as to how to go about that.

I have not tried anything yet... Not sure what I'm doing. TY

[zalbard]

I want to get a copy of the bios that is on my card but I'm clueless as to how to go about that.

I have not tried anything yet... Not sure what I'm doing. TY

Try this. Use it for saving only, though, not for flashing.

[Frogeye]

Ahh screw this! I'm such a noob I can't even make a usb dos boot. I've tried. Thanks for the suggestions.

The one I made says "no dpmi memory" when I try to run ATIFLASH from dos. It's a win98 dos boot. Epic fail

[Gaul]

q 9550 @ 4.5 GH + 5870 @ 1025/1350

[zalbard]

Ahh screw this! I'm such a noob I can't even make a usb dos boot. I've tried. Thanks for the suggestions.

The one I made says "no dpmi memory" when I try to run ATIFLASH from dos. It's a win98 dos boot. Epic fail

You can make a CD or DVD image much easier if your optical disk drive is NOT SATA.

[Frogeye]

You can make a CD or DVD image much easier if your optical disk drive is NOT SATA.

I'll look into the DVD sollution

[zalbard]

I'll look into the DVD sollution

http://www.bootdisk.com/bootdisk.htm
Grab a DOS 6.22 image, add your flashing stuff to it and you're set.

[Intratech]

http://service.futuremark.com/compare?3dmv=1815358

[Particle]

There don't appear to be any clear instructions on how to do it. I tried changing the main voltage register to 1.2V and then changed all the XX registers to 1.2V as well. It crashes instantly when it goes into 3D mode. How are you guys getting overvoltage to register correctly?

[Frogeye]

http://www.bootdisk.com/bootdisk.htm
Grab a DOS 6.22 image, add your flashing stuff to it and you're set.

Ok zalbard I somehow figured out how to do the usb boot and have everthing on the stick. I was even able to save the stock bin file to the stick.

When I tried to flash I got the ssid mismatch error when I typed:

atiflash -p 0 newbios.bin

I googled the error and I guess I need to try to use -p 1 ? Baby steps!

[purecain]

you need to add -f to force the flash.... atiflash -f -p 0 newbios.bin

[Frogeye]

you need to add -f to force the flash.... atiflash -f -p 0 newbios.bin

I'll try that thanks.

Yeah! I did it. Kind of freaked me out when it booted up after the flash for the first time. I didn't realize I'd have to reinstall the vid drivers again.

I used atiflash -f -p 0

Ty you guys.

[Gaul]

Update score !!

[MetalRacer]

I just got two Asus 5850’s a couple of weeks ago from Newegg, the default settings are 850/1200 and the BIOS appears to be the same version as the 5870 according to GPU-Z. Also Asus Smart doctor doesn’t recognize the cards which may indicate they have the 5870 BIOS. Has anyone else seen this with new out of the box cards?