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

[Zeus]

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.

[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.

[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