3% faster mining with phoenix+phatk for everyone

[Rob P.]

Just tossing my confirmations out there:

Sapphire 5830s:

Pair 1:  264 Mhash/sec -> 271 Mhash/sec (each) at 875 MHz GPU, 900 MHz RAM (2.58% increase)
Pair 2:  273 Mhash/sec -> 281 Mhash/sec (each) at 900 MHz GPU, 600 MHz RAM (2.84% increase)

I'm also tracking Rejected shares.

Before Patch:
Pair 1:  ~2.6% rejects (after 800+ shares)
Pair 2:  ~3.2% rejects (after 800+ shares)

After Patch:
Pair 1:  ~3.0% rejects (after 650+ shares)
Pair 2:  ~4.0% (after 750+ shares)

So, the increase appears to also cause additional rejects that should be discounted from total increase gain, cutting it down a full 1% in my case.

Bitless, sent my donation to you as well.  Thank you for sharing your findings, giving to the community is what this should be about.  There will be plenty of time for profits later, here's to hoping you'll be adequately rewarded for your finding and work.

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[bitless]

Bitless, sent my donation to you as well.  Thank you for sharing your findings, giving to the community is what this should be about.  There will be plenty of time for profits later, here's to hoping you'll be adequately rewarded for your finding and work.

Thanks a lot! I hope you'll figure out the issues that you've having with your mining after the patch. If I think of anything that can be of help, I'll post it too.

[MiningBuddy]

I got ~10mhs increase on my 5870's and surprisingly my stale rate actually is a LOT LOT lower then before the mod.

I will certainly be donating as soon as I have some cleared funds bitless, thank you so much for your hard work and I look forward to your next modification you speak of previously. (Do you have any more details on that atm?)

[bitless]

I got ~10mhs increase on my 5870's and surprisingly my stale rate actually is a LOT LOT lower then before the mod.

I will certainly be donating as soon as I have some cleared funds bitless, thank you so much for your hard work and I look forward to your next modification you speak of previously. (Do you have any more details on that atm?)

Everything that I've heard so far suggests that the stale rate is completely unrelated to the mod - it is somewhat random (esp. given that hdminer uses something that's equivalent to the mod as well). However, I'm glad that it is low for you at the moment.

No, I don't have any ETA on other modifications. They are complex and may never materialize into code... in which case I'll just post my thoughts on the subject.

Thanks for the donation!

[Gameover211]

Yup worked for me exactly as you said. My 6870 went from 300 to 308. Thanks!

[goxed]

Yup worked for me exactly as you said. My 6870 went from 300 to 308. Thanks!

It definitely worked for my 5830! Awesome thanks a bunch bitless

[phorensic]

This community is awesome.  Nice little speed boost.  I'm at the ragged edge on core voltage and clock speeds, so this boost was very cool!

[abyrnes81]

Thanks for sharing, it worked well for me.

AB

[X68N]

my GPU usage (and thus hashrate) has always fluctuated like a small sine wave from 99% - 90% , after this patch, they all stay a straight line 99% , so that's way more than a 3% increase in hashrate for me.

What's weird, mine went from 90%-96% to 96% straight but the added performance adds 1.5C to the temperature, I might have to clock down a bit to get tot he previous 90C stable line, which means I am forfeiting the benefits of the above optimization. At least I use less energy, the Earth will thank us all...

Same here, actually. I was ok with 6870 overclocked to 1000 MHz, but after the change it became unstable so I had to go down to 975, which is kinda sad. Yet, I blame it on poor ventilation in my case, so may be I'll get it running at 1000 again, eventually

Just run the card with open Case.
Also a good improvement is add 2x 120mm 10db-Silent Fans, that cool your card more Silent.

I run my 6870 @ 1005Mhz , 60 degrees Celsius , 60% Fanssped (card fan) @ 302Mhash/s.
(now with speedfix @ 311Mhash)

[zeezy]

Thanks for sharing, it worked great for me. About 2.5% it looks like!

[ahitman]

How does one get an accurate reading of their rates? My rates seem to jump randomly between 363 to 367 on one of my 5850 and 361 to 364 on my other 5850. Should they both be the same? Should they be jumping this much?

[sc8nt4u]

How does one get an accurate reading of their rates? My rates seem to jump randomly between 363 to 367 on one of my 5850 and 361 to 364 on my other 5850. Should they both be the same? Should they be jumping this much?

I run headless w/ aggression=19, so my hash rate is  pretty stable.

[Junglebrother]

Wow, have to try, thanks for sharing. 

[Bert]

How does one get an accurate reading of their rates? My rates seem to jump randomly between 363 to 367 on one of my 5850 and 361 to 364 on my other 5850. Should they both be the same? Should they be jumping this much?

It depends on the mining software you use.
I use phoenix and it by default averages every 10, so I increased this (-a 50). It takes longer to settle down, but once there it will not jump about as much.

[BombaUcigasa]

How does one get an accurate reading of their rates? My rates seem to jump randomly between 363 to 367 on one of my 5850 and 361 to 364 on my other 5850. Should they both be the same? Should they be jumping this much?

-r 3

[PcChip]

my GPU usage (and thus hashrate) has always fluctuated like a small sine wave from 99% - 90% , after this patch, they all stay a straight line 99% , so that's way more than a 3% increase in hashrate for me.

What's weird, mine went from 90%-96% to 96% straight but the added performance adds 1.5C to the temperature, I might have to clock down a bit to get tot he previous 90C stable line, which means I am forfeiting the benefits of the above optimization. At least I use less energy, the Earth will thank us all...

Same here, actually. I was ok with 6870 overclocked to 1000 MHz, but after the change it became unstable so I had to go down to 975, which is kinda sad. Yet, I blame it on poor ventilation in my case, so may be I'll get it running at 1000 again, eventually

That means your 1000 MHz core wasn't actually stable to begin with, but you were getting by because it wasn't being used fully.  After the patch it's getting fully loaded which puts more stress on it; Because of that, at 975 MHz with the new patch you might still be getting a higher overall hashrate than before the patch at 1000 MHz

[RedLine888]

5870

970\365

430,5 -> 439,4 ~2.07%

W7x64 SP1, Phoenix 1.5 + Phatk, APP 2.4, Catalyst 11.6

 

THANX A LOT

[jaebird]

Worked for me as well. Thanks.

[grid]

OC'd 6970 went from 400 to 417MHash/s. Sent some mBTC your way!

[jones]

awesome thank you!