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So whats the latest kernel? 8-27? Or is there a secret newer version that I'm not seeing? Because according to main page, there is an unreleased kernel thats faster than 8-27 which is also called current. Where can I get the current kernel?
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I bought a PCI slot to PCI-E slot adapter about a week back from ebay (some guys in china), looked up the chip it uses and it uses this. http://www.plxtech.com/8112 and here is what I bought http://www.ebay.com/itm/150619756121?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649 the bridge chip sits on the reverse side. It accepts up to 16x width cards, but operates at 1x speed under pci-e 1.1 specs. In reality, its about 0.5x speed 1 way since PCI bus is limited to 133MB/sec total bandwidth, no seperate lanes for upload and download. PCI-E 1x 1.1 is 250MB/sec for download and 250MB/sec for upload. |
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I'll confirm from past experience that anything past 10 aggression causes high CPU, but only on single card setups. Multicard setups have cpu bug no matter what for me. People say cpu bug is gone on the very newest AMD APP 2.6 + OpenCL 1.2 + Catalyst 11.12/12.1, but I can't justify the huge hash speed loss over maybe 10-15 watts since I'm already hugely underclocking my cpu from 2.4ghz to 800mhz.
Gaming PC - Sapphire 5830 Xtreme - 950/1125 24/7 - Mine off and on depending on gaming activities, about 295 mhash when not using PC @ aggression 5. No CPU bug
Spare PC - Sapphire 5830 xtreme - 980/330 - Sits outside in the winter cold, 316 mhash @ aggression 10. No CPU bug
Living room - Sapphire 5830 xtreme - 925/330 - Limited airflow/dusty. 298 mhash @ aggression 10. No CPU bug
Dedicated - Sap. 5830 @ 975/330 + Asus 5870 @ 975-1085/330 (depending on severe cold weather, heatpipes freezing) + MSI (?) 5870 @ 1085/330 - Sits outside in the winter cold. Currently ~315/~480/501mhash @ aggression 14. CPU bug persist across all aggressions. Using 11.11 on all except gaming PC which uses 12.1 but AMD APP + OpenCL has been reverted to the version that comes with 11.11.
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My mhash dropped on all my boxes with 11.12/12.1. Also high aggression/intensity cpu bug still there.
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Yup, CPU bug is finally gone, i'll take the small drop in hashing power for that  I play BF3 and I haven't noticed any drop in performance in that game. However the previous driver version gave me horrible dissapearing of objects/terrain in skyrim that was fixable by minimizing the game then maximizing it- got very very annoying.... that has since been fixed with my update yesterday I should mention that I am using the 11.12 drivers that were recently released How many cards? Also are you using really high intensity/aggression, or somewhere in the middle/low end? |
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oh my god I have tried like 4 times now to revert to 2.5 sdk and i cant revert! I've tried uninstalling -everything- amd related and used driver sweeper every time too, but i simply cant revert it! its like it just decides to keep the most recent sdk "just in case".
\ Same here... and it didnt solve the cpu bug for me. I already figured out how to revert back to the faster SDK. Just scroll down. I even posted a compressed archive of the files you'll need to revert back to 2.5 (2.6 is the new, slower, sdk) Maybe for mining coins, But perhaps the new OpenCL runs games better There are extremely few, if any, modern games that utilize opencl. OpenCL is aimed more towards scientific applications like WPA cracking. If a game needs numbers calculated for something like physics, it'll either be offloaded to the CPU in order to keep game framerate high, or if you have an nvidia card and the game specificly uses physx, it'll be offloaded to that instead. You're probably thinking of Open GL, which coincidentally got a version bump to 4.2 in 11.12 and 12.1 preview. |
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oh my god I have tried like 4 times now to revert to 2.5 sdk and i cant revert! I've tried uninstalling -everything- amd related and used driver sweeper every time too, but i simply cant revert it! its like it just decides to keep the most recent sdk "just in case".
\ Same here... and it didnt solve the cpu bug for me. I already figured out how to revert back to the faster SDK. Just scroll down. I even posted a compressed archive of the files you'll need to revert back to 2.5 (2.6 is the new, slower, sdk) |
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it is slower with phoenix but it has small boost with cgminer with flag -I 9(to remove cpu bug)
w7 x64 5870@950/300 gives 434,4Mhash/s, with catalyst 11.11/b/c/ was 433,3
One mega hash from One user... Anyone else got something on the positive side for these drivers? It's very likely that nobody will see improvements until kernels get rewritten to better accommodate the new version of opencl and AMD APP. |
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The last one is thermal tape, not thermal pads.
Used chewing gum is the cheapest thermal pad. Use it.
Cant tell if serious... No really. Is chewing gum a viable alternative? |
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Dual boot linux ... ok how many bitcoins?  /nope. not touching linux. Anyways it felt like forever, but I was able to revert to 2.5 SDK. Bitcoin offer is no longer valid. If you're using windows, simply replace these files with those of 2.5 SDK and you should have your faster mhash back C:\Windows\System32\amdocl64.dll C:\Windows\System32\amdoclcl64.dll C:\Windows\System32\OpenCL.dll C:\Windows\SysWOW64\amdocl.dll C:\Windows\SysWOW64\amdoclcl.dll C:\Windows\SysWOW64\OpenCL.dll I also uploaded a rar file with these dlls if anyone needs them to revert. http://dl.dropbox.com/u/9768004/AMD-APP-SDK-v2.5.rarjust extract it to the drive you have your OS installed on and it'll extract each file to the correct path. edit: forgot link. |
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oh my god I have tried like 4 times now to revert to 2.5 sdk and i cant revert! I've tried uninstalling -everything- amd related and used driver sweeper every time too, but i simply cant revert it! its like it just decides to keep the most recent sdk "just in case".
i'll pay bitcoins to someone who can help revert without needing a complete system format.
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When I installed 11.12, I noticed the opencl version was hugely different. it went from 2.5.793.1 to 10.0.831.4. opencl is probably a completely different beast now.
edit: huge mhash drop. asus 5870 / sapphire 5870 / sapphire 5830 xtreme went from 475/501.8/317.1 to 440.1/454.5/286. DO NOT INSTALL!!!!!!!!!
edit2: maybe you can update to 11.12 driver but stay on "old" opencl. i'll post back with results.
another: I didnt even check to see if cpu bug was still there with 3 vid cards. sorry guys
zzz: after uninstalling, rebooting, driver sweeper all amd products, rebooting again, installing 11.11, I still have the "new" opencl somehow. my good miner has been tainted!
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Ok, I guess I'll bite. I'd prefer to keep as much communication as possible within this thread though, because these forums are infested with scammers, and more often than not if communication isn't public, nobody will help you should things go wrong.
Please tell me if you're still interrested. I'll send you the code first. Yeah I'm interested. I just got back on the site right now. You can send code to arexdramon at hotmail {dot} com . If you want a bitcoin address to verify that I actually have coins, you can check out http://blockchain.info/address/15kZZVh28AA6Ya3232bCXC9FLMtYFnmHZd as well as my eligius mining stats page http://eligius.st/~artefact2/5/15kZZVh28AA6Ya3232bCXC9FLMtYFnmHZdI'll need your bitcoin address too after I recieve the code. I'll screenshot the e-mail with some of the gamecard code to verify I actually got the code. Lastly, if the code happens to be genuine and it redeems successfully on battle.net, i'll send an additional couple of bitcoins because I was slow to respond (even though I was first in requesting though) |
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Ok, I guess I'll bite. I'd prefer to keep as much communication as possible within this thread though, because these forums are infested with scammers, and more often than not if communication isn't public, nobody will help you should things go wrong.
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Eagerly waiting for results
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Hmm. perhaps you are right. Kinda ironic its too cold to cool your card. I guess the obvious solution is move them inside and actually use the heat produced by it or at least inside a shelter of some kind that can warm up a bit. Alternatively, Id consider making something even more ghetto based on cooler that has no heatpipes. Something like an old Zalman copper flower or VF700. If you have the room for it, even an old massive copper CPU heatsink. It might be inadequate at room temperature but I suppose most things would work at -15C . Only thing is it needs a small enough footprint to not be obstructed by any nearby components. Not even sure that I have any stock heatsinks floating around. 6:30am and way too tired to tear apart my room looking for heatsinks. I know I have a thermaltake big typhoon, but that uses heatpipes solely to transfer heat energy to the metallic fins to dissipate the heat too. I also believe I have a waterblock and an extra radiator, but no extra pump. z_z I'll mess around with stuff this weekend. |
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I would be surprised if your analysis is correct. For the water in the heatpipe to freeze, it must be below 0. If your GPU is between 60 and 90C, I just dont see that happening. Have you pointed an IR thermometer to the end of the heatpipes? Are they seriously near or below 0C?
BTW, I thought most heatpipes didnt use water, but ethanol or alcohol.
They don't use water. It doesn't mean they are immune to state changes. They are under a different pressure inside the heatpipe and have different freezing and boiling points. |
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So we're starting to see single digit temperatures (to euro people thats -15c roughly) and have 2 mining PCs sitting outside. Of the video cards mining, 2 are 5870s, both have had their stock fans fail long ago. One got a shiny Zalmna VF-3000A, the other is using a "naked" reference heatsink with a 4500 RPM 80mm fan duct taped and sealed onto the exhaust end, blowing the air in reverse. The ghetto heatsink is working just fine, seeing 31C core with 1080/330 and 1.212 vcore. The shiny VF-3000A is succumbing to the cold though; the liquid inside can't stay liquid in the extreme cold is is freezing up by the aluminum fins, leaving only the copper pipes able to transfer heat. This picture can clearly show whats happening.  Trying to think of the optimum solution here. I could try to dig out the other reference heatsink and find another fan (though 80mm's are hard to find in my house). I also have one of these http://www.thermalright.com/new_a_page/product_page/archives/nb1.html but it's made of aluminum and I lost the fan for it. Any input fellow miners? |
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