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

[Pandora's Box]

Anyone know roughly what clocks a 5850 needs to perform at the same performance as an 5870?
I'd guess 950/1200, anyone got a good idea?

http://www.gpureview.com/show_cards....614&card2=613#

940 core, 2400 memory.

[flopper]

Anyone know roughly what clocks a 5850 needs to perform at the same performance as an 5870?
I'd guess 950/1200, anyone got a good idea?

dont tell the whole story, depends on game and resolution also.
Basically, a 5850 is 100mhz on core less than a 5870 to perform the same the 5850 needs 100more on the core.
In practice, games, the difference might not be that big due to game engine and resolutions.

[stingush]

i'd say 900/1200, according to reviews on 870/1200 the 5850 almost the same as 5870 stock..

[Unoid]

My XFX with MSi bios runs 940/1200 with small voltage bump to 1.13V Hits 72C at 29% fanspeed on auto.

Now if only I could Overclock without getting the 2d Idle causing flickering...

[Unoid]

Seems that with latest MSi afterburner theres a hidden option to enable OCing past STOCK BIOS's
Link: http://hwbot.org/article/news/msi_af...ass_ccc_limits

I may flash back my stock XFX and test this out.

[Blkout]

http://www.gpureview.com/show_cards....614&card2=613#

940 core, 2400 memory.

This is almost correct based on numbers alone. 945/1200 would be just slightly faster than a 5870. But as stated above, number alone don't paint the whole picture and the 5850 is very close to the 5870 in real gaming scenariors even at lower overclocks.

[Blkout]

My XFX with MSi bios runs 940/1200 with small voltage bump to 1.13V Hits 72C at 29% fanspeed on auto.

Now if only I could Overclock without getting the 2d Idle causing flickering...

That load voltage is incorrect or you're not fully stress testing the card. Try some Crysis Warhead Frost loops. Voltage for 940/1200 should be around the 1.2v.

[jaredpace]

Aren't voltage requirements different for every chip?

[Blkout]

Aren't voltage requirements different for every chip?

Slightly, but not that far off. That a BIG difference on a 5800 series card.

[jaredpace]

Anyone have a 5970 watercooled on a full-cover block? Would like to see your temperatures & voltages!

[Unoid]

That load voltage is incorrect or you're not fully stress testing the card. Try some Crysis Warhead Frost loops. Voltage for 940/1200 should be around the 1.2v.

Here's screen shot clocks are a lil less but its where I like it. I had time for just the 5 minutes or so but I had it going for 1 hour last night and it was fine. Been gaming and no crashes.

[jaredpace]

where do you get an Afterburner like this !?!?



http://kingpincooling.com/forum/show...&postcount=124

[nickless]

I have a question. I flashed my Sapphire 5850 with Asus bios, but Smart doctor 5.51 not work, it gives me an error: "can not find video cards information". Is there any way to fix this? AFAIK when the card is flashed with Asus bios, Smart doctor should work?!

[jaredpace]

maybe try an older version like 5.48? Does gpu-z read bios sub-vendor ID as ASUS?

[skugpezz]

where do you get an Afterburner like this !?!?



http://kingpincooling.com/forum/show...&postcount=124

just change the skin

[pinto]

No, jaredpace wants to know how to push voltage to 1.6v like me!

[nickless]

maybe try an older version like 5.48? Does gpu-z read bios sub-vendor ID as ASUS?

Yes, GPU-Z read bios sub-vendor ID as ASUS and I try with Smart doctor 5.46, 5.48 without success.
Someone who use Smart doctor with non Asus card???
Now I use MSI Afterburner, but I want to try asus utility, because AFAIK it allow to set 1.45v vGPU.

[Gaul]

No, jaredpace wants to know how to push voltage to 1.6v like me!

v1.6 ? cool, and the answer is ??

[nickless]

v1.6 ? cool, and the answer is ??

Hard vmod with soldering, but it's strange that no one have posted detailed pictures and description of this hard vmod until now. There is some pictures in ATI 5850/5870 voltmod thread, but they are not very clear. It's a big secret maybe ?!

[OC Nub]

i7-860 4.0ghz 5870cf. I normally don't run vantage so not sure what kind of score to expect from this rig.

[kpablo]

i7-860 4.0ghz 5870cf. I normally don't run vantage so not sure what kind of score to expect from this rig.

URL=http://img205.imageshack.us/i/vantage.png/]IMGhttp://img205.imageshack.us/img205/3203/vantage.png[/IMG][/URL

Almost same as what i got:


P27050

i7 920@ 4.2GHz
CF HD5870 @ 1000/1350

[jaredpace]

kpablo & OCnub - Those are some sweet rigs. WOW!~

[Toss3]

Would someone mind PM me the stock Sapphire 5850 bios; my HDD with my backup just died and I'd like to go back to stock now that afterburner works with other vendor's cards as well?

[nickless]

Would someone mind PM me the stock Sapphire 5850 bios; my HDD with my backup just died and I'd like to go back to stock now that afterburner works with other vendor's cards as well?

You can find it here: http://techpowerup.com/vgabios/57585...24.090916.html

[roller11]

Seems that with latest MSi afterburner theres a hidden option to enable OCing past STOCK BIOS's

I may flash back my stock XFX and test this out.

This is good to know as the MSI/ASUS overclock BIOS doesn't work on my XFX 5850, the prob is that with these BIOS, I get random crashes when I try to resume from S3 sleep mode. Crash happens about one time in ten (90% of the time sleep mode resumes normally). Any BIOS that trashes sleep mode is absolutely worthless, so I was forced to go back to the stock XFX BIOS. So far, no crashes with stock BIOS.
It's great that MSI AB now fixes the lame "can't overclock" restriction on the XFX boards, but there is still an important design defect with all 5850 boards: thermal downclocking. This "feature" doesn't do a damn thing except limit the OC and/or cause excessive irritating fan noise. It doesn't protect the card AT ALL. Maybe someone can find a fix for thermal downclocking, I figure I'm losing about 80 Mhz of GPU clock because of it.