Bitcoin Forum

5870 GPU
Using MSi Afterburner to Overclock.
Core Clock: 990 MHz
Mem. Clock: 185MHz
Default voltage: 1.162

~418 Mhash/s

Anyone getting better with this particular GPU?


/edit: I should also mention for the sake of completeness that with the fan profile I use I run at 69 degrees C with a fan speed of 62%.
Driver Version 7.14.10.0833, Catalyst 11.5
Windows 7 64-bit
GUIminer -v2011-05-21
with flags: -v -w128 -f1

on https://en.bitcoin.it/wiki/Mining_Hardware_Comparison it looks like someone is getting 445 with 1005, 335 at 1.072 V.  let me know if you can get similar results because i am poised to get one of these cards. thanks

Pretty good hashrate.
I have not tried yet to overclock my card that high.
I am currently running 390 MHash/s at core = 900 MHz and Mem = 300 MHz and default voltage.

XFX 5870 stock voltage
960/320 core/ram
430 MH/s

phoenix poclbm on Linux with 2.1 SDK

I would suggest experimenting with the ram speed, I found ram = 1/3 core working best for me, ymmv.

i have 2 5850s, a 5850 is almost an underclocked 5870.

OC'ed to 900mhz/300mhz

NOT using crossfire. Using a dummy dvi adapter to use second card.

666.66Mhash/s avg between them.

I tried that and it wasn't stable with my gpu so I think I will stick with what I have now.

Thanks for all the replies.

930/350  core/mem, default voltage, 421MH/s
Win 7 x64, Catalyst 11.6, Phoenix miner, aggression 13, work size 256

950/300 MHz, default voltage, 420 MH/s, using phatk with VECTORS BFI_INT FASTLOOP=false AGGRESSION=14 WORKSIZE=256

950/310, default voltage, 429MH/s with phatk and VECTORS BFI_INT AGGRESSION=14 WORKSIZE=256
Using SDK2.4 on Linux Mint 11.

Tried 960 and it was mostly stable at 432MH/s, but it hanged after few hours. At 980 it did 441MH/s but hanged after few minutes.
You guys know how to modify bios using RadeonBiosEditor to increase voltage over the 1.163V stock?

Almost. 2 OC'ed 5870 do 850Mh/s.

I use MSI Afterburner to adjust everything including the voltage. You just have to go into the Settings and put a check mark in the Unlock voltage control box.

You can also edit the cfg file for Afterburner and set  UnlockVoltageControl = 1
In that cfg file ( located here in Windows 7: C:\Program Files (x86)\MSI Afterburner\MSIAfterburner.cfg )
you will need to set these following entries like this as well for being able to move beyond default values.

UnofficialOverclockingEULA   = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode   = 2

And to get down to 185 for the Memory Clock I needed to move it to its lowest value of 600 first and then hit apply and then close and restart and then move it to the next lowest value of 300 and then hit apply and close and restart and then it is possible to set it to a low value like 185 and then hit apply one last time.

I don't think MSI afterburner will ever work in wine. The RBM does, since it doesn't access hardware.