Changing PCIE frequency gives an extra 30 KHash/s for free !!!!!!

mac-coin

member

Activity: 107

Merit: 10

Hi

I've just tried this on a asrock 970 Extreme3 R2.0 motherboard and after a 30min test, I got about 1-2 kh/s more. So without doing a 12 hour test I would say there was no change.

Mich^

newbie

Activity: 20

Merit: 0

Quote from: MACROMOLECULE on January 25, 2014, 06:59:06 PM

i tried it and couldnt get it to work. i too have the asrock z77 extreme 4

I have this motherboard as weel. Together with an Intel Core i5 3570K.

But its not so stable as I first thought, after a few hours the hash rate drops down to +-500.

I'm now testing with 97Mhz. This give me still a small 20khas/s more.

MACROMOLECULE

newbie

Activity: 42

Merit: 0

i tried it and couldnt get it to work. i too have the asrock z77 extreme 4

Wipeout2097

sr. member

Activity: 840

Merit: 255

SportsIcon - Connect With Your Sports Heroes

Very good find! Latency, latency, latency. Did you also disable everything not relevant for mining, including audio and firewire?

Is that an Asrock 970 or other model?

Burninj

legendary

Activity: 1148

Merit: 1000

if that's true this is really cool ^^

MadMatt

member

Activity: 63

Merit: 10

Anyone else try this? I think I'll give it a go

Edit: EasyTune for Gigabyte MB's doesn't let you change PCIe frequency, only cpu frequency :/

Mich^

newbie

Activity: 20

Merit: 0

Hi Guys,

I'm not sure if this works for everyone and if this is posted before but i found a way to get around 30 to 40 khas more for each gpu i have.

I have an ASRock extreme 4 motherboard and with the ASRock tool AXTU i changed the PCIE frequency from the motherboard to 95 MHz. And this gave 35 khash/s more!!!

Pic with the normal 100MHz: http://michielvanaalst.nl/tnet/100.png
Pic with the 95 MHz: http://michielvanaalst.nl/tnet/95.png

Topic: Changing PCIE frequency gives an extra 30 KHash/s for free !!!!!! (Read 1180 times)