4850 clocks

[bilston]

Now I know you lot will be able to get 700 out of the core, but what is the highest you guys have gotten the memory at?

Also what is a good test of memory stability, because I stuck mine at 1100 and all was well for about 20 mins, then tf2 crapped out on me Heat possibly, as I have no airflow and just ramsinks on it but still...

 

[Pulse]

I've got 690/1150, doesn't seem to like 700 on the core. Using VF900 cooler though, not stock. Works flawlessly.

 

[gurusan]

mine will do 700/1150 on stock voltage. Does 750/1150 on 1.23v...waiting for some wc bits to arrive so that I can put it under water and see what it can really do.

Over at XS jamesbong already has done almost 950mhz on air...I am going to try to go for 1ghz as I did on my 3850.


And for memory stability, the Crysis GPU bench always seems to detect errors the fastest for me.

 

[m@rty]

I'm trying to test my 4850 on crysis too, but it wont let me change the settings to ultra high, i only have an e6400 at stock speeds, could this be the problem?

 

[gurusan]

you need vista to run the very high settings

 

[m@rty]

you need vista to run the very high settings

ok cheers mate, that explains it then

 

[gurusan]

yup very high uses dx10 features which are unique to vista

 

[m@rty]

Also, the CCC seems to be reducing my GPU clock speed from 625 to 500? Why is that?

 

[willhub]

Also, the CCC seems to be reducing my GPU clock speed from 625 to 500? Why is that?

2d clocks.

 

[m@rty]

2d clocks.

Ok im still learning all of this, but im guessing that means it reduces the clock speed when no games are running?

 

[willhub]

Ok im still learning all of this, but im guessing that means it reduces the clock speed when no games are running?

yep

 

[Alpherah]

Cant keep mine stable past 640 core and 1030 Mem =/ The heat this thing kicks up is just immense.

 

[bilston]

950 is absolutely NUTS! How can we volt mod this baby? I got mine sitting at 28C on boot up at idle on water. It's screaming at me to stick some more volts through it oh wait ccc doesnt go above 700 does it?

How did that other guy manage 950? bios editing?

 

[KaneStatton]

Also, the CCC seems to be reducing my GPU clock speed from 625 to 500? Why is that?

this is off topic but...
When i try to overclock my 3870 if won't do it on CCC?
i'll move the sliders up click test and it won't test them just put them back to normal??
any help would be very appreciated

 

[bilston]

maybe it cant handle the over clocks youre setting