Topic: Why low hash rate with HD 5830? (Read 7645 times)

Geeze, Sue me for skipping the bottom half about a GT 9800 inside a 5830 hashrate thread.. Gosh..

That's an Nvidia card which are not good for bitcoin mining.  The Mining Hardware Comparison chart may have some info for optimizing that card.

https://en.bitcoin.it/wiki/Mining_hardware_comparison

Sam

I managed to add a 1 gigabyte memory stick and it's still freezing up, just not as fast. It's annoying because before it freezes it gives me another 50Mhash/s. It would be nice if it ran stable but no such luck.

Using guiminer... yadda yadda yadda. My main machine with the 5830 is still reliably churning out the bitcoin... yay

I thought hey- maybe if I could figure out how to mine using Ubuntu maybe that would work, but it turns out mining in Ubuntu is a pain in the arse because there's no gui. I need gui. Command lines freak me out.

UPDATE: Hmmm... I tried rcpminer -cuda  and it hasn't frozen for like 15 minutes. But I can't find what flags to use to optimize the hash rate. On my main machine with the 5830 I use -v -w 128 and it helped. Maybe someone knows the proper flags for rcpminer?

What I did was I used afterburner on the 9800 and lowered the memory clock and also increased the fan speed and it seems to have helped.

Was that a shot at my bits for tits charity, BTC-donation-only, 48 hour stripping extravoganza to benefit Mitt Romney's extortion case legal handling fees?  Lol jk.

wow dude... thanks for your help. not.

The point here is that I'm wondering if anyone knows why the 9800 GT card is freezing up the system when I use it to mine.

I get it. You've come up with a new way to make bitcoins! Instead of someone tipping you when you're helpful, you're guessing people will give you bitcoins in exchange for not giving them s#%t. Seems as plausible as some of the other schemes around here.

Wow dude... Click the card in, Clickin the power pins, Screw it down, Done.

The 5830 is churning away at a steady 250Mhash/s. I had to upgrade the power supply to a 900 watter though. It ran on the old 500 watt power supply for a few days but then the system just refused to boot. Tried a 700 watter and still no boot, but the 900 watter is churning away nice and steady.

I was going to give myself a little hash bump-up by using an old card on another machine. This other card is an NVidia 9800 GT. For some reason mining with this card on another machine freezes the system almost immediately. It is running 64 bit Win7 on a 64 bit Athlon. The only thing I can think of is that I don't have enough memory in the 2nd machine, only 2 gigs of a possible 4. I was using a much weaker video card on the same machine to mine but it was such a weak card it wasn't really worth it. But the other weaker card at least didn't freeze up. Maybe someone has some ideas as to what would cause the freezing, but at this point I'm stumped.  

I needed to upgrade the video card on the main machine anyway so I don't care that I'm in the hole on mining. But the second machine is a backup and I don't want to spend a lot to get it to mine.

Cost to set up main machine to mine:
$100 for 5830 on Ebay
$40 to install 5830 (I was intimidated by the dual power hookups on the card and also by the sheer size of the thing so I took it to my local repair dude)
$130 for new 900 watt power supply ($100 for hardware and $30 to install)
Total: $270

Cost to setup second machine to mine:
$20 for a NVidia 9800 GT on Craigslist. I actually managed to install it myself! But using it to mine freezes the system, don't know why. Could get an additional 30MHash/s, hardly seems worth any further bother.

So far I've made about 1 bitcoin (includes various free bitcoin deals), and get around .08 bitcoin per day mining. I switched from Deepbit to 50btc and that gave me an extra .01 bitcoin per day.

Also interesting is that since I started bitcoin mining the value of a bitcoin has gone up around $2. I haven't converted any US$ to bitcoin but it is tempting.

This, it deserves +1

And also, there are 3 reasons that a card fries when you're overclocking.

1. too hot (so keep it cool with under-mounted fans or side blowing or an open case or whatever you have to do.  Mine ran stable at 62C constantly at a 800 -> 1040 overclock)

2. overvoltage breaking resistors and stuff -> don't go too nuts on the voltage increases.  The overclock settings are so so sensitive to slight voltage dips and surges at that point that it's not great for BTC anyway.  I initially got to like 950MHz on that same card without having to up the voltage then I popped it up like 0.1V or something for stability since it was on the edge.

3. slow whatever-something-or-other-drift.  I forgot the name.  It happens inside the GPU itself but only after like 2-3 years in most cases.  I get a new card every 3-4 years anyway lol.

So control temps, don't try and go up to some ungodly voltage, don't buy a cheap crappy card like a Zotac (MSI has THE best voltage controls) and anticipate your card dying a couple years from now and you're all set.

I KNOW I KNOW.. Your too clueless to search, that is why your rates blow...
WHY OH WHY is there constant drivel about years old already know and posted a 100+ times.

Know why I dont ask a million questions?   I know how to use search...

Undervolt= Card lasts longer, Costs less to operate, Costs less to cool.
Anyone undervolting is going for "MH/Joules" to beat thier power costs.
Rather than the common "CRANK IT HIGHER, MAKE MORE" that gamers use (cause we usually have free power)

You shouldn't be worried up until about 80 celsius if I'm not mistaken It's mostly heat that fries cards, though significant voltage raises can damage them at any temperature. Apparently miners are now setting voltages under what they're rated for which makes no sense to me whatsoever, as overclocking requires higher voltages, but I keep hearing it so there must be some sort of point to that, lol.

For 5XXX cards using ATI Stream SDK 2.1 will get you better performance over the newer AMD APP SDK

It can be tricky getting an older sdk to install especially 2.5 and after. Something to do with the ATI Stream becoming APP SDK. Each SDK variant using different folders in which certain files are located makes uninstall and reinstalling a headache.

A few programs that help to get the older SDK installed Driver Sweeper and GPU Caps Viewer or also GPU-z. Just using the uninstaller or add/remove program leaves behind files and programs like GPU Caps viewer and GPU-z still come back showing the unwanted SDK's still being installed instead of the 2.1.

If mixing cards from 5XXX with 6XXX or 7XXX you either can have multiple SDK's installed or use the later AMD APP SDK. If using multiple SDK versions you then must specify which to use by using the "gpu-platform". The SDK's will use a number order just as having multiple GPU's does

Also for me using cgminer a single thread at 256 worksize gave better Mh/s as well as U value which specifies shares per minute.

Cool.. I will give it a try... When I first started I played around with all sorts of settings on my two original 5850's and 128 always seemed to work best....

I believe it's a difference in the kernel's... I have been using the diablo kernel lately instead of phatk..... had stability issues on one rig got annoyed and gave up on using the older sdk...

I ran my Spapphire extreme 5830 with CGMiner at "--gpu-engine 960 --gpu-memclock 300 -k phatk -w 256 -I 8" and I got 310MH/s. This was on Win7x64, always using the newest drivers but keeping SDK 2.5.

In fact, for all my 5xxx cards: SDK 2.5, 300mem, and worksize of 256 seemed to be a very successful combination.

running external programs for overclocks caused me nothing but problems...


Shit works best for me when I use cgminer only.... nothing else running on the rigs...

I thinks ist'I Think it's XP / Drivers related ... don't want to upgrade to 7 yet ...it's easy corrected by starting trixx before cgminer ...

just cosmetic for me at the moment ...

I was about to scream LIAR!, Because i own a shappire extreme running at 930core (MSIa) (XFX card) then read "under xp"

I don't know  It works best for me, worksize 128 is a bit slower. Maybe it is because I use older driver/sdk combo and phatk kernel.
Might very well possible that with diablo kernel worksize 128 is a better choice.

epends ...

under XP , CGMiner cannot cross 870 mhz overclock on a saphirre extreme card ... card report 870 gpu speed max ...

only overclocking with Trixx (saphirre software) allow cgminer use more clock speed ...