Lowering mem clock to idle speeds SPEEDS UP Mh/s - page 6.

rezin777

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Activity: 154

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Quote from: allinvain on April 07, 2011, 07:10:00 PM

Quote from: nster on April 07, 2011, 06:30:00 PM

bump so that every can benefit from this! at worst your temps and power consumption go WAY down!

Yeah if you're using Windows - reason being if I'm not mistaken in Linux performance also suffers if you lower the mem clock, no?

But yeah, lowering the mem clock works for me in Windows and it does lower power consumption and temps. Not sure about "WAY" down though. I does cut quite a bit of "amps" off the VRMs powering the memory especially for me with my 4 GB of VRAM. I'd say it probably lowers power usage by 30 watts easily.

If you are feeling really frisky, the VTT voltages can be lowered via BIOS on a 5970.

nster

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Activity: 126

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Quote from: allinvain on April 07, 2011, 07:10:00 PM

Quote from: nster on April 07, 2011, 06:30:00 PM

bump so that every can benefit from this! at worst your temps and power consumption go WAY down!

Yeah if you're using Windows - reason being if I'm not mistaken in Linux performance also suffers if you lower the mem clock, no?

But yeah, lowering the mem clock works for me in Windows and it does lower power consumption and temps. Not sure about "WAY" down though. I does cut quite a bit of "amps" off the VRMs powering the memory especially for me with my 4 GB of VRAM. I'd say it probably lowers power usage by 30 watts easily.

Well MSIa doesn't work for linux... but it would be weird if mem clock reduction makes performance suffer in linux.

30W is WAY down in my book Cheesy

what card are you using?

allinvain

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Activity: 3080

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Quote from: nster on April 07, 2011, 06:30:00 PM

bump so that every can benefit from this! at worst your temps and power consumption go WAY down!

Yeah if you're using Windows - reason being if I'm not mistaken in Linux performance also suffers if you lower the mem clock, no?

But yeah, lowering the mem clock works for me in Windows and it does lower power consumption and temps. Not sure about "WAY" down though. I does cut quite a bit of "amps" off the VRMs powering the memory especially for me with my 4 GB of VRAM. I'd say it probably lowers power usage by 30 watts easily.

nster

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Activity: 126

Merit: 100

bump so that every can benefit from this! at worst your temps and power consumption go WAY down!

nster

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Activity: 126

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I'll bump this for whomever missed it before

gjs278

newbie

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the hash rate on poclbm in linux on a 5870 lowers drastically (a good 10mhs) when the memclock is at 300 compared to 900. you can do it with radeon bios editor though, since MSI afterburner isn't available in linux.

bbulker

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Activity: 124

Merit: 100

Sent a donation, thanks for the tip. Lowered my temps from 72C to 67C on my 6850. The hashrate did not lower either.

nster

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Quote from: qed on March 10, 2011, 01:17:02 AM

Lowering the memory clock is lowering your hash/s by a very small %. From me, from 1250 MHz to 625 MHz is decreasing my performance by something smaller than 1%.

My 3 HD 6950 are on underclock (725 MHz core, 625 MHz ram) and undevoltage since the beginning. The overall system consumption is around 350W insted of 650 W for a 10% higher has rate.

Interesting... with my 6870, my hashrate went up ~5Mh/s AT LEAST... so somewhere around 2~3%, and my temps by 5~10C I'm not too sure (my fan speed varies)

qed

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Lowering the memory clock is lowering your hash/s by a very small %. From me, from 1250 MHz to 625 MHz is decreasing my performance by something smaller than 1%.

My 3 HD 6950 are on underclock (725 MHz core, 625 MHz ram) and undevoltage since the beginning. The overall system consumption is around 350W insted of 650 W for a 10% higher has rate.

nster

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Activity: 126

Merit: 100

Anyone else wants to share their experience? be it if it just lowered your temp by 10C or if it actually gave you an Mh/s increase?

Thanks person who donated 0.5 btc

the 1st donation I ever received Cheesy

nster

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So many people have benefitted frpom this yet noone feels the urge to donate? Roll Eyes

nster

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Quote from: niooron on March 09, 2011, 10:31:59 AM

Isn't this just a buggy overclocking tool? You can just use AMDs GPU clock tool if you want to overclock beyond the Overdrive limit.

So far MSI's Afterburner is the best OC tool I've used

niooron

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Isn't this just a buggy overclocking tool? You can just use AMDs GPU clock tool if you want to overclock beyond the Overdrive limit.

JWU42

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Quote from: nster on March 08, 2011, 03:53:49 PM

Quote from: ?? on ??

@nster , you need to start hanging out on IRC.

Download http://xchat.org/ and join us at Freenode network. Channels: #bitcoin-discussion , #bitcoin-dev , #bitcoin-otc , #bitcoin-monitor and many more.

Just went there Wink

I just restarted my comp and my Mh/s are back to normal, before, my Mh/s were 5% lower than usual for no apparent reason. Also, my CPU mining doesn't really affect my GPU mining anymore (before it would lower it by 10Mh/s, not it lowers it by 1 if not less

Use the freeware version of xchat -- http://code.google.com/p/xchat-wdk/

dishwara

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Activity: 1855

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mem clk 300 don't do much. but for me mem clk 375 gives 271-273 Mhash/s & any other mem clk gives less, 265-270 only.

nster

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Activity: 126

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Quote from: dishwara on March 08, 2011, 05:11:08 PM

Quote

I think he meant just to talk because he likes my posts so far...

As for the 2nd part could you rephrase? I did not get it. For some people the =1 is fine, for others you gotta write the whole thing, so I just gave you the long version

u may be right. before i tried with 1 & it didnt help MSI to OC. Now after that long sentence, i can able to go to 300Mhz from 1050Mhz of mem clk & i have to thank u for creating this post.
By decreasing mem clk, i dont see much difference in Mhash/s , may be i didnt look carefully.
But it helped me to lower temp.
I have 6870 & running at 1038 core clk, 1050 mem clk, 100% fan & getting 265-268 Mhash/s with temp 74-75C.
Now with 1038 core clk, 325 mem clk, 100% fan, i am getting 267-269 Mhash/s with temp 65-66C.
around 10C reduction in temp by lowering mem clk, which i never expected.

Try 300 mem clock exactly...

Yea temp reduction helps... though you temps are high for 100%... I get those temps with 57% fan and with 1045 core

dishwara

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Activity: 1855

Merit: 1016

Quote

I think he meant just to talk because he likes my posts so far...

As for the 2nd part could you rephrase? I did not get it. For some people the =1 is fine, for others you gotta write the whole thing, so I just gave you the long version

u may be right. before i tried with 1 & it didnt help MSI to OC. Now after that long sentence, i can able to go to 300Mhz from 1050Mhz of mem clk & i have to thank u for creating this post.
By decreasing mem clk, i dont see much difference in Mhash/s , may be i didnt look carefully.
But it helped me to lower temp.
I have 6870 & running at 1038 core clk, 1050 mem clk, 100% fan & getting 265-268 Mhash/s with temp 74-75C.
Now with 1038 core clk, 325 mem clk, 100% fan, i am getting 267-269 Mhash/s with temp 65-66C.
around 10C reduction in temp by lowering mem clk, which i never expected.

nster

full member

Activity: 126

Merit: 100

Quote from: dishwara on March 08, 2011, 04:02:14 PM

Quote from: ?? on ??

@nster , you need to start hanging out on IRC.

Download http://xchat.org/ and join us at Freenode network. Channels: #bitcoin-discussion , #bitcoin-dev , #bitcoin-otc , #bitcoin-monitor and many more.

If it is said here in bitcoin forum, instead on IRC, it stays forever, (until mods deletes), so not only advanced, but also new , no voice user found it useful.

Quote from: nster on March 08, 2011, 10:53:18 AM

[ATIADLHAL]
EnableUnofficialOverclocking = 1
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
AccessibilityCheckingPeriod = 0

UnofficialOverclockingEULA =1 ,i put & cant make it to work MSI. thanks for saying that i have to write a long sentence & promise MSI.

I think he meant just to talk because he likes my posts so far...

As for the 2nd part could you rephrase? I did not get it. For some people the =1 is fine, for others you gotta write the whole thing, so I just gave you the long version

dishwara

legendary

Activity: 1855

Merit: 1016

Quote from: ?? on ??

@nster , you need to start hanging out on IRC.

Download http://xchat.org/ and join us at Freenode network. Channels: #bitcoin-discussion , #bitcoin-dev , #bitcoin-otc , #bitcoin-monitor and many more.

If it is said here in bitcoin forum, instead on IRC, it stays forever, (until mods deletes), so not only advanced, but also new , no voice user found it useful.

Quote from: nster on March 08, 2011, 10:53:18 AM

[ATIADLHAL]
EnableUnofficialOverclocking = 1
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
AccessibilityCheckingPeriod = 0

UnofficialOverclockingEULA =1 ,i put & cant make it to work MSI. thanks for saying that i have to write a long sentence & promise MSI.

nster

full member

Activity: 126

Merit: 100

Quote from: ?? on ??

@nster , you need to start hanging out on IRC.

Download http://xchat.org/ and join us at Freenode network. Channels: #bitcoin-discussion , #bitcoin-dev , #bitcoin-otc , #bitcoin-monitor and many more.

Just went there Wink

I just restarted my comp and my Mh/s are back to normal, before, my Mh/s were 5% lower than usual for no apparent reason. Also, my CPU mining doesn't really affect my GPU mining anymore (before it would lower it by 10Mh/s, not it lowers it by 1 if not less

Topic: Lowering mem clock to idle speeds SPEEDS UP Mh/s - page 6. (Read 39026 times)