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Author Topic: Record hashrate for a 5850? (me, showing off)  (Read 13820 times)
king_pin
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February 02, 2013, 04:39:01 PM
 #121

For 24/7 I can't go more than 1080 at 1174mV, and that was when it was -10'C here, now it is +10'C so I doubt that I can do it stably.
I am curious too, I might try 1.2V but I'm a bit scared, and I doubt I'll get more than 1100MHz, and my PSU GX750 is fucked up it gives 11.8V with just 1 card.
I should try it on the AX1200 but i run 5870s on it.

btw all of this is useless now, because of efficiency - I run my 5850 at 1V and around 900/300MHz depending on the card

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catfish
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February 03, 2013, 02:04:00 PM
 #122

Hmmmm... I posted 408 way back when I didn't know what an FPGA was and hadn't built any of my shelf-rig monsters. It's still on the hardware comparison wiki. That was with a Sapphire brand retail 5850 that must have been a 'lucky ${deity} touched card' - NO voltage tweaks, running 24/7 for months, no alternative cooling solutions, though in an open frame rig.

And that was with ancient software... hell the entry says **phoenix** FFS - this must have been 2011.

That card is still hashing away at 400 (clocked back from 999 to 900) now, and the fan hasn't yet failed (all other cards from that era have either had replacement HSFs or have been retired due to unprofitability).

It's still barely profitable and I've got a grid of FPGAs now, but I can't let the old trooper go as it must have been a truly lucky card from the factory.

Repeat - no voltage mods, no cooling mods - stock card with nothing but core and mem clock tweaks.

I pushed it past 420 but the VRMs got too hot. So if the record is 461.1 - and we've got people here with names like 'king_pin' (you're not k|ngp|n - the russian guy (or was that tin?) from the extreme overclocking scene are you?Huh)... I'm guessing liquid nitrogen pots and all that jazz are being used... I can't compete with that.

However my lucky card... given how cool the core stays even at 1000 MHz, and that the VRMs glitch first, I reckon a quick heatpipe heatsink for the power stages, plus putting the card in my test rig so it's the only GPU load on a 750W PSU (all previous tests were in a 4-GPU rig, even with 850W PSUs, the power draw was close to max safe load - and I never had money-no-object > 1kW PSUs), would get at least 430.

I've built a homebrew cooler for a broken-fan Asus 6950 DirectCUII (from the sister card to the 'deity' 5850 - Sapphire 5-heatpipe single fan) using the 5-heatpipe sink and a CPU fan from an AMD logic board, and a few simple tweaks (no voltage yet) has delivered 435 MH consistent 24/7 at an easy 75˚C with the fan running at 30%. Again, the VRMs get too hot before the core.

I'll try building a proper cooler for the power stage on this test card. The 5850s were awesome cards! Sadly not amazingly profitable at UK electricity prices these days, but with GBP/BTC at around 13, I'm turning some of them back on Smiley

Use known stable, overpowered PSUs for this sort of experimentation folks... though I'm sure I don't need to tell you all that Smiley

...so I give in to the rhythm, the click click clack
I'm too wasted to fight back...


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king_pin
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February 04, 2013, 02:18:43 AM
 #123

Nope dude I'm from Bulgaria, and next week here there will be temperatures of -7'C to -10'C so expect some more printscreens from me Smiley
No nitrogen just cold air. There are vids of my rigs on YouTube:

http://www.youtube.com/watch?v=OCTDN05LKao

http://www.youtube.com/watch?v=WX6uvrPuUYs

I'm using SDK 2.4 maybe SDK 2.1 may give me 1-2 more MH/s and I have a week CPU, so 1-2 MH/s lost there too.

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February 05, 2013, 04:15:07 PM
 #124

For the record.  My rate of 461.1 MH/s was also set with air cooling.  I went as far as replacing the standard fans with some decent custom ones but no liquid was involved.

king_pin:  Hash rate aside, 1080 MHz at only 1.174V is impressive! (damned impressive if I'm correctly gathering that this card is simultaneously driving the desktop).  How stable is that?  The big advantage I had over many other miners was having no GUI (my screenshots are just ssh sessions in terminals on another machine) and I bet my good card would have struggled to do that if at all.

Honestly, I was uncomfortable taking my card beyond 1.15 V but decided to try it briefly for the purposes of setting records and learning more about my cards.  I eventually set my card to 0.9875V, 890 MHz core, 300 MHz RAM, which was giving me 373.1 MH/s, and got more involved with pools (about a month before Namecoin merged mining came out).  I preferred this as it was much kinder to my cards and was more profitable (with my second card set a little slower my rig drew 300W at the wall, so 2.43 MH/J).  I never had a crash with these settings.
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February 05, 2013, 08:03:13 PM
 #125

...damned impressive if I'm correctly gathering that this card is simultaneously driving the desktop...
No no she isn't the desktop one Smiley
But I have one 5850 which is the desktop card and is running happily at 985/300/1049mV so I think she is my most impressive card. Smiley

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February 06, 2013, 08:38:35 AM
 #126

...damned impressive if I'm correctly gathering that this card is simultaneously driving the desktop...
No no she isn't the desktop one Smiley
But I have one 5850 which is the desktop card and is running happily at 985/300/1049mV so I think she is my most impressive card. Smiley

Ah good.  I was prepared to grill you for details on the 1080 MHz setup, but with no desktop generating noise and distraction like a 3-year-old on holiday, it's a plausible rate for a good card given the overvolt.

As for the desktop card: running two differently demanding tasks stably, 24/7, with a serious overclock is already a considerable achievement.  Doing this with a mild undervolt?... Cheesy.  She's a gem; long may she live.
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February 13, 2013, 05:11:59 PM
 #127

hmm, i've never owned a 5850..

i messed around with that 5870 some more since it actually got cold again here for a bit...  i started running into problems not w/ stability but with "hardware errors",   maybe 2 or 3%?   this around 1120 clock

Dacentec, best deals for US dedicated servers. They regularly restock $20-$25 Opterons with 8-16GB RAM & 2x1-2TB HDD's (ofc, usually lots of other good stuff to choose from).  I did a Serverbear benchmark of one of my $20/mo Opteron (June last year), it's here.  Have had about a half dozen different servers with Dacentec, & none have failed to sustain at least 40MB/s (burst higher). My favorite is a 12-month rent-to-own ZT Systems 2XL5520 16GB 2x2TB SATA for $40/month (got lucky with the 'off-brand', haven't seen a RTO 2xL5520 for under $50/mo since -- at least for monthly contracts).  wholesaleinternet.com has some ancient 2-core intel CPUs @ $10/mo sometimes (I got an Intel Core 2 6300 @ 1.86GHz, with a 250GB HDD with 46000 hours on it, LOL. $20 @ Dacentec is much better, if you can grab one). joesdatacenter.com (same location as Wholesale Internet) also occasionally has specials (or if you don't want to wait, it has an AMD Opteron 170 @ $16/mo).
kimihiro
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May 27, 2013, 02:09:30 AM
 #128

have anyone here ever use this http://www.biostar.com.tw/app/en/vga/introduction.php?S_ID=103#spec
what d'ya think about this card?
computerparts
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May 27, 2013, 04:20:16 AM
 #129

ReCat
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May 27, 2013, 11:14:22 PM
 #130

Rumor has it all started when he resurrected a thread that dates back to the big bang, that then sucked him in ripped his entropy into pieces, spreading clones of him all over time and space. All of them doing the same exact thing, resurrecting old threads, and all without him knowing why or even where he even came from nor who he is.

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crashoveride54902
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May 28, 2013, 02:15:37 AM
 #131

Rumor has it all started when he resurrected a thread that dates back to the big bang, that then sucked him in ripped his entropy into pieces, spreading clones of him all over time and space. All of them doing the same exact thing, resurrecting old threads, and all without him knowing why or even where he even came from nor who he is.

wtf did i just read Huh

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May 28, 2013, 02:33:58 AM
 #132

A mix of the script of a doctor who episode, portal 2, and my imagination. Tongue

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