Alright guys, I'm getting a lot of conflicting info here. I'm going to be setting up a dual 5870 rig soon and I'd like to know for sure what SDK to use in order to get maximum hashing performance out of it. Which is truly best SDK 2.2, 2.3, 2.2 or does it even matter? I think the latest CCC drivers use 2.3 so will it be worth it to use 10.x CCC drivers to use SDK 2.1?
I'm going to be using Windows 7 Ultimate 64 bit as my OS.
Topic: 5870 not hashing in new computer - Stream 2.1 installed (Read 6246 times)
How does one get a "dummy plug" for a displays? I have 2 5870s in a windows XP machine, but sadly it won't probably enable the secondary card unless a monitor is attached on startup. I'd rather not have to attach a monitor when I turn it on, how can I get around this?
Putting resistors in the vga/dvi adapter or directly into the vga card in order to simulate a monitor. Google dummy plug and check the first link.
Necro thread!
So, I moved my 5870 to a new computer, and the poclbm GUI says that I don't have any OpenCL devices on my computer. GPU caps viewer detects the stream 2.1 install I have, and says that I have stream 2.1. I'm not sure what to do at this point, since it worked perfectly on the last computer.
Do you have SP3 installed if this is Windows XP ?So, I moved my 5870 to a new computer, and the poclbm GUI says that I don't have any OpenCL devices on my computer. GPU caps viewer detects the stream 2.1 install I have, and says that I have stream 2.1. I'm not sure what to do at this point, since it worked perfectly on the last computer.
Do you have at least one display or dummy plugged in each card ?
How does one get a "dummy plug" for a displays? I have 2 5870s in a windows XP machine, but sadly it won't probably enable the secondary card unless a monitor is attached on startup. I'd rather not have to attach a monitor when I turn it on, how can I get around this?
Is there a way for me to move this to the Technical support area, or should I just create a new thread there?
Bump, mainly because I can't figure anything out here, and I've missed out on a day of mining.
XP Pro SP3, fully updated.
Two monitors plugged into one card. Same setup as my previous computer, and even plugged into same locations on the card.
Two monitors plugged into one card. Same setup as my previous computer, and even plugged into same locations on the card.
Necro thread!
So, I moved my 5870 to a new computer, and the poclbm GUI says that I don't have any OpenCL devices on my computer. GPU caps viewer detects the stream 2.1 install I have, and says that I have stream 2.1. I'm not sure what to do at this point, since it worked perfectly on the last computer.
Do you have SP3 installed if this is Windows XP ?So, I moved my 5870 to a new computer, and the poclbm GUI says that I don't have any OpenCL devices on my computer. GPU caps viewer detects the stream 2.1 install I have, and says that I have stream 2.1. I'm not sure what to do at this point, since it worked perfectly on the last computer.
Do you have at least one display or dummy plugged in each card ?
Necro thread!
So, I moved my 5870 to a new computer, and the poclbm GUI says that I don't have any OpenCL devices on my computer. GPU caps viewer detects the stream 2.1 install I have, and says that I have stream 2.1. I'm not sure what to do at this point, since it worked perfectly on the last computer.
So, I moved my 5870 to a new computer, and the poclbm GUI says that I don't have any OpenCL devices on my computer. GPU caps viewer detects the stream 2.1 install I have, and says that I have stream 2.1. I'm not sure what to do at this point, since it worked perfectly on the last computer.
Changed to the Stream 2.2 release, and am seeing a 5-10Mhash/s average an increase in my average over using 2.3. Not hashing much faster, but the average is higher than it was before, and has less variation from one second to the next. Previously, it would bounce between 313-320, this is much more stable between 317-322. I'm looking for 2.1 though, and I'll update once I've done that as well.
Edit: Only able to find this page, is this ATI Stream? http://developer.amd.com/gpu/AMDAPPSDK/Pages/default.aspx#five The archive page on the download page for that link doesn't seem to be working, can anybody point me to a different place for 2.1?
Edit 2: My average was wrong, upon looking at previous data.
Edit: Only able to find this page, is this ATI Stream? http://developer.amd.com/gpu/AMDAPPSDK/Pages/default.aspx#five The archive page on the download page for that link doesn't seem to be working, can anybody point me to a different place for 2.1?
Edit 2: My average was wrong, upon looking at previous data.
Get the download link of current and change the number to 2.1 =) Archive seems to be broken :\
That worked, thank you very much. I want to max out my hash rate today because I'm going to be away for awhile, and my computer can hash 100% of the time for 7 days, instead of me having to use it to do other things. Even a Mhash or two could make a difference over a long enough period of time.
Edit: Mhash/s has gone between 329-332 for the last 2 minutes, with occasional drops below that. Much faster.
Changed to the Stream 2.2 release, and am seeing a 5-10Mhash/s average an increase in my average over using 2.3. Not hashing much faster, but the average is higher than it was before, and has less variation from one second to the next. Previously, it would bounce between 313-320, this is much more stable between 317-322. I'm looking for 2.1 though, and I'll update once I've done that as well.
Edit: Only able to find this page, is this ATI Stream? http://developer.amd.com/gpu/AMDAPPSDK/Pages/default.aspx#five The archive page on the download page for that link doesn't seem to be working, can anybody point me to a different place for 2.1?
Edit 2: My average was wrong, upon looking at previous data.
Edit: Only able to find this page, is this ATI Stream? http://developer.amd.com/gpu/AMDAPPSDK/Pages/default.aspx#five The archive page on the download page for that link doesn't seem to be working, can anybody point me to a different place for 2.1?
Edit 2: My average was wrong, upon looking at previous data.
Started using the -v -w128 flags, and increased by 20-30Mhash/s. Current speed, 313-320Mhash/s. Still running 2.3, no overclocking, no optimization. I'm a fan of seeing my graph on slush's pool jump 10x. 
Haha yeah, I expected a big jump on the graph but not THAT big.I'm fooling around with core speeds now, trying to see how far I can push this thing. I'm at 1000 core 275 mem right now, ~375mhash/sec. Hopefully it's stable.
Edit: Okay, 1000mhz failed and crashed poclbm, but 990 seems to be fine!
Started using the -v -w128 flags, and increased by 20-30Mhash/s. Current speed, 313-320Mhash/s. Still running 2.3, no overclocking, no optimization. I'm a fan of seeing my graph on slush's pool jump 10x.
One awesome thing with these cards and mining is that you can downclock the memory REALLY far without it affecting your mining performance.
I'm running 900 core 275 mem right now. Temps and power consumption (I assume) went down. It's running much cooler and quieter now, from 77 at full load to around 70, and the fan is much much quieter. I'd set the mem clock lower, but if I reach 250 then it actually starts being unstable - Aero goes nuts and starts artifacting everywhere.
I used ATI Tray Tools to downclock, Afterburner or CCC wouldn't let me go lower than 600mhz. Even though the slider in Ati Tray Tools only goes to like 595mhz, what you can do is slide it to that 595mhz, click Apply, and for some reason the next few mhz will be "unlocked". You can keep going down until you reach the speed you want.
I'm running 900 core 275 mem right now. Temps and power consumption (I assume) went down. It's running much cooler and quieter now, from 77 at full load to around 70, and the fan is much much quieter. I'd set the mem clock lower, but if I reach 250 then it actually starts being unstable - Aero goes nuts and starts artifacting everywhere.
I used ATI Tray Tools to downclock, Afterburner or CCC wouldn't let me go lower than 600mhz. Even though the slider in Ati Tray Tools only goes to like 595mhz, what you can do is slide it to that 595mhz, click Apply, and for some reason the next few mhz will be "unlocked". You can keep going down until you reach the speed you want.
MSI Afterburner, look into enabling unofficial overclocking (google).
Though my card allows up to 1300mhz in CCC without doing this.
Though my card allows up to 1300mhz in CCC without doing this.
What tools are you using to overclock? The catalyst driver is limiting me to 900mhz core. I tried using the msi program but it seems like catalyst overrides the setting and puts me back at 900mhz.
I don't see any performance problems with ATI Stream SDK 2.3 on Win7 with m0mchil's python miner, I don't see why so many people instantly suggest to downgrade.
My HD 5870 gets about 355-360 mhash/s at 940mhz with -v -f 5 -w 128, and my HD 6850 gets about 230-235 mhash/s at 1ghz with the same switches.
On my 5870 @ 940mhz I run the fan at about 50% (~2350rpm), the temp flatlines at a constant 81-82'c at this speed. Another thing is that the stability of the core overclock is a bit misleading with mining, my card at stock voltage only runs stable at 910mhz with games + mining at the same time (915mhz = crash), but has mined for a week at 940mhz without a single hickup. My HD 6850 gets a similar result and is stable running at a ~20-30mhz higher core speed for mining than games. I just created seperate profiles in MSI Afterburner to quickly switch the core between 910 and 940mhz depending on what I'm doing, as that little 30mhz boost increases the speed by about 10m hash/s.
You could probably overvolt and get into the 380-400 range with a single HD 5870 if you had one with a nice cooler, but the reference coolers are hot/loud enough on stock voltage as-is even with great case cooling and room temps.
My HD 5870 gets about 355-360 mhash/s at 940mhz with -v -f 5 -w 128, and my HD 6850 gets about 230-235 mhash/s at 1ghz with the same switches.
On my 5870 @ 940mhz I run the fan at about 50% (~2350rpm), the temp flatlines at a constant 81-82'c at this speed. Another thing is that the stability of the core overclock is a bit misleading with mining, my card at stock voltage only runs stable at 910mhz with games + mining at the same time (915mhz = crash), but has mined for a week at 940mhz without a single hickup. My HD 6850 gets a similar result and is stable running at a ~20-30mhz higher core speed for mining than games. I just created seperate profiles in MSI Afterburner to quickly switch the core between 910 and 940mhz depending on what I'm doing, as that little 30mhz boost increases the speed by about 10m hash/s.
You could probably overvolt and get into the 380-400 range with a single HD 5870 if you had one with a nice cooler, but the reference coolers are hot/loud enough on stock voltage as-is even with great case cooling and room temps.
Thanks for the tips given here; I downgraded to stream SDK 2.2 and my hash rate jumped ~30 mhash/s to ~340mhash/s average.
A note to anyone else trying this; from SDK 2.3 to 2.2, your device numbers may change. I ended up with my CPU as device 0, which was previously my 5870.
It's possible that the solder on some components came loose when you were overclocking, but the solder has now reflowed.
If it happens again (and if you've got some guts), you can attempt to reflow the board using a toaster oven.
A note to anyone else trying this; from SDK 2.3 to 2.2, your device numbers may change. I ended up with my CPU as device 0, which was previously my 5870.
Looks like I damaged the card. 
Now this is weird. Looks like the card has "healed itself" today while I was at work, there's no trace of the problems any more. Bizarre, but I'm not complaining. It's possible that the solder on some components came loose when you were overclocking, but the solder has now reflowed.
If it happens again (and if you've got some guts), you can attempt to reflow the board using a toaster oven.
Looks like I damaged the card.
Now this is weird. Looks like the card has "healed itself" today while I was at work, there's no trace of the problems any more. Bizarre, but I'm not complaining.
Happy to say I've gotten everything up and running, and I added a second 5870, which is also running smoothly. Chugging along at 660Mhash/s at stock. Thanks to everyone in this thread for their help.
Tip: be careful with overclocking. I ran my 5770 at 975 MHz for a week (up from 850) and everything seemed to be fine. The GPU temperature never went above 90 degrees C, which I think is OK. (I'm a GPU n00b since I'm not a gamer.)
However, after shutting down my computer for a few hours yesterday, I'm now getting garbage pixels on the screen, and random "verification failed" errors when mining, at all clock speeds. Looks like I damaged the card.
However, after shutting down my computer for a few hours yesterday, I'm now getting garbage pixels on the screen, and random "verification failed" errors when mining, at all clock speeds. Looks like I damaged the card.
Yeah that is a high overclock, you kind have to expect your card to burn up without additional cooling. Im running my 5870 at 900 up from 850. I manually set the fan to 40% and the card hasn't went about 67 degrees. Now that is a good overclock.
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