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

[madriddistas]

1) 1100 is far too ambitious, shoot for 1000 core.

2) It's easy, just google for a flashing guide.

3) Not possible to flash a dead card, period. Cooling is everything in overclocking/overvolting, just use common sense and watch temps.

4) None that i could think of.

Now, that's fast. Thanks Zeus. Anyway, I have the budget to buy 5850 or 5870, but I read a lot of reviews that 5850 is not very far behind from 5870, but there's no decent reviews in term of Oc headroom.

1) So, I wonder can HD5850 do 1000/1200, currently trying to read the thread from 1st page to the end but I've yet to meet anybody done my preferable clock on HD5850. (If it's possible might as well go for HD5850)

2)So I guess investing on Artic cooler Twin Turbo for this card is not bad idea after all~ Hope I can achieve 1000/1250 on Hd5870+artic cooler twin turbo with minimal voltage increment.

[yourtoilet]

Do anyone get any flashing artifacts sparkles in the beginning in Crysis, where you land the water without the airsuit? Near the beach, I see flashing artifacts only on the trees, they are little above your ground level.



Anyone with overclocked 5xxx, please try and see if you see any artifacts because I had the same problem with 4870x2 and 4890.

If anyone wan to detect if they have artifact, please crank up all your setting( 8x AA ect), go to the beach I described and gloom over the trees for a minute.

Edit: Same problem with stock clock.
Edit2: Same problem with stock clock, 100% fan.

[RacingTurtle]

Heres my offering on 1.225v :
1ghz core
1300 mhz mem

[IMG][/IMG]

[IMG][/IMG]

[Dahaka]

Great clocks and voltage .

some quick vantage run?

[kemo]

Now, that's fast. Thanks Zeus. Anyway, I have the budget to buy 5850 or 5870, but I read a lot of reviews that 5850 is not very far behind from 5870, but there's no decent reviews in term of Oc headroom.

1) So, I wonder can HD5850 do 1000/1200, currently trying to read the thread from 1st page to the end but I've yet to meet anybody done my preferable clock on HD5850. (If it's possible might as well go for HD5850)

2)So I guess investing on Artic cooler Twin Turbo for this card is not bad idea after all~ Hope I can achieve 1000/1250 on Hd5870+artic cooler twin turbo with minimal voltage increment.

I have tested both the HD5850 and HD5870 at 1000/1250 and i could barley notice any difference in performance , Stalker had like 10% advantage with the HD5870 , otherwise there is like 5% difference across the board for 30-40% more $$$$

[Penryn]

This cooling by Arctic Cooling S1.No mod,no voltage.Default voltage 900-1250 testing Furmark.

[madriddistas]

I have tested both the HD5850 and HD5870 at 1000/1250 and i could barley notice any difference in performance , Stalker had like 10% advantage with the HD5870 , otherwise there is like 5% difference across the board for 30-40% more $$$$

What's the voltage for both HD5850 and 5870 probably the former should be pumped a bit higher, yes?

If both done in stock HSF I might go for HD5850 but need to know the voltage 1st since have to worry bout the electricity bill :P

[kemo]

What's the voltage for both HD5850 and 5870 probably the former should be pumped a bit higher, yes?

If both done in stock HSF I might go for HD5850 but need to know the voltage 1st since have to worry bout the electricity bill :P

Both are done on stock HSF with fan at 60%
Amount of Voltage will vary from card to another , my 5870 sucks and needs 1.32V to be 24/7 stable for games but it fails at Furmark with that Voltage , the HD5850 only needed 1.27V but your milestone may vary

How much $$ per KW you are paying coz they use lots of power when overclocked
http://www.xbitlabs.com/articles/vid...0_4.html#sect0

[jcool]

I noticed my 5870 does love the cold. I recently hooked my rig up to a custom waterchiller, and with around 8C water I got this:

http://hwbot.org/community/submissio...70_26123_marks

Using around 1,4V VGPU it's Vantage stable at 1150/1350... around 1130 is the max I can get through FURmark. Pretty impressive considering I couldn't go past 1070 on straight water.
I would have loved to see 1200, but I fear that's out of reach without the use of DICE or LN2.

Also, a question:

What bios do people use on ref. design HD5870 cards these days?
I am still on the first unlocked Asus bios, but for some reason setting VGPU in bios never worked for me.. even more, my card was re-set to 1,12V VGPU (so lower than stock) and I couldn't for the life of me fix it. I even flashed some modded bioses from other users to make sure it wasn't my fault, all to no avail.
So I gave up and just used Afterburner to set my clocks and Voltage..

But now, I'm willing to try again
So what's the latest Bios with at least 1200/1400 clock limits? Thanks

[madriddistas]

Wow Kemo, I read that article and that was Hell of a Power Consumption. Hurm.. I think it depends on luck whether to choose a better overclocking card but it's safer to choose HD5870 since a lot of that card can clock 1000/1250 with lower vcore and I got it from a few pages back from this same thread~

@jcool, 1.4 dude, that's impressive clocking but I'm not a fan of high Voltage clocking for GPU but good luck trying 1200/1400. Do post the result here. Thanks~

[jcool]

Thanks, I figured 1,4V was safe since the GPU temps stayed below 20C at all times (VRMs topped out at ~45 during Vantage runs).

I now flashed some MSI OC bios dated March 2010, this one.
Flash was successful, it reads 2000/2000 as CCC limits and powerplay still works fine with OC.
However, my old problem persists - stock VGPU at bootup is still 1.125V instead of 1.1625V
Also, when running a GPU DC app like Milkyway OR running Furmark in windowed mode, the mem voltage stays at 0.95V. Only when entering fullscreen 3D does it raise to the proper 1.15V - memory clocks do rise, however.
This behaviour is strange, and does not occur with the old Asus OC bios.

Guess I'm going back to the old one then

The mystery revolving around my stock VGPU remains unsolved

[jcool]

..and back to the old Asus OC bios. This time, I edited it using RBE 1.25 - I changed the VGPU register to 1,175V (obviously that didn't work, still 1.125V load ) and the VTT register to 1.25V (that one worked - maybe it'll help me get to 1200 core?).
I also changed the default Core speed to 900 (check). I didn't change overdrive limits. Note how this bios ramps up the VDDCI when running Milkyway@Home (BOINC) - so it's obviously more intelligent than the MSI bios

Anyone who can solve my VGPU mystery - I'm putting up 10 bucks as a reward if you can figure it out, cause I'm all out of ideas here.

[roki977]

same 1.25v problem with Asus bios on second card.it is stable on stock but..

[RacingTurtle]

Vantage run:

[IMG][/IMG]

[jaredpace]

Jcool, you might find an answer to setting bios volts at tpu rbe forum. The registers don't respond consistently to changes, but theres a lot of discussion about problems just like yours.

[ban916]

1 5850

[Spare-Flair]

What is the danger threshold for VRM temperatures?

[dejanh]

After whole weekend testing mounting with the reduced standoffs on Komodo blocks I decided to call it an end and move on to benching. Following is with WHQL 10.3 drivers, CPU at 4.65GHz with HT on and 2 MSI R5850 GPU(s) in CrossFireX at 1050/1300 using 1.325V.



And the compare link http://service.futuremark.com/compare?3dmv=2064759

[Church]

dejanh: as in reduced standoffs worked fine and you are now using that block with TIM paste? any measurements for those wishing to dremel off their standof set?

[dejanh]

dejanh: as in reduced standoffs worked fine and you are now using that block with TIM paste? any measurements for those wishing to dremel off their standof set?

No my friend, I'm afraid not. This is back on pads. Reduced standoffs did not pan out. I will update Gabe's Swiftech Releases Komodo HD5800 F/C Waterblock For ATI with details very soon.

Edit: That thread is now updated.

[Blademaster]

My Scores, friends.

- CPU: Core Q9550
- Clock used to CPU: 2833
- OC used to CPU: 3825
- VGA: XFX HD5850
- Clocks stock: 725/1000
- OC used to VGA: 850/1200 / ATI Overdrive On
- Version Driver: 10.3 WHQL
- Modo Quality, AA e AF Off e Vsync Off

[jcool]

I managed to raise my clocks to 1180/1380. Pushing 1,475V GPU, this gives me #25 global single card on HWbot.

http://hwbot.org/community/submissio...70_26801_marks

And by a mile the only one on water up there

[Linuxfan]

My 5870 arived and I'm pleased with the Crysis result

http://img263.imageshack.us/img263/3720/25694193.jpg

Roughly 5-8fps faster than 4870x2

Is it nomral that the card starts to artifact around at 80c in furmark?

Good result... I think the 10.3 drivers must give it a boost, just finally downloaded Crysis and installed it... Got 41FPS average with those settings but without the 2x AF with a lower min FPS but 52 highest...

[zalbard]

I managed to raise my clocks to 1180/1380. Pushing 1,475V GPU, this gives me #25 global single card on HWbot.

http://hwbot.org/community/submissio...70_26801_marks

And by a mile the only one on water up there

Haha, that's cool! Very well done!
Are you sure your RAM is fine with 1380MHz clock?

[jcool]

Thanks
Yeah, since I raised VTT a little, it works. Not sure whether 1380 or 1360 ram is faster, kinda depends on the App I'm benching too.