Retiring my old ATI HD 4850.

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Message 44968 - Posted: 11 Feb 2013, 17:10:02 UTC
Last modified: 11 Feb 2013, 17:21:56 UTC

Today I bought a new AMD/ATI Radeon HD R7870 2Gb Core Edition. When the weekend comes, I will retire my old HD 4850, and install this new toy in my Q8200 PC.

I do believe that the HD 7870 will be at least a little bit faster than my old HD 4850 :-)
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Message 44969 - Posted: 11 Feb 2013, 17:47:40 UTC - in response to Message 44968.  

Today I bought a new AMD/ATI Radeon HD R7870 2Gb Core Edition. When the weekend comes, I will retire my old HD 4850, and install this new toy in my Q8200 PC.

I do believe that the HD 7870 will be at least a little bit faster than my old HD 4850 :-)


Good choice!!!

I look forward to see the run times for that card.
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Message 44970 - Posted: 12 Feb 2013, 8:49:16 UTC

Very nice.
I`m sure you will like it.

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Message 45004 - Posted: 15 Feb 2013, 19:55:00 UTC

OK, first SETI@home v7 v6.99 (ati_opencl_sah) finished and validated with my new HD7870. resultid=12744254

I did have one problem though when trying to cram the card into my computer. I had to, (with some minor force) adjust the metal cover of the card (bend it out a little at one point) because there were some (unusually high) capacitors on the motherboard that was hitting the metal cover when I tried to put it in the PCI-E slot. I guess I can kiss goodbye to the warranty, but what the heck, no pain, no gain :-)

I also had to reinstall the drivers (still on 12.4) though, because the card had some issues at first. After the reinstallation of the drivers, it behaves fine. Of course I had made sure that Boinc did not start up before I was certain the card behaved. And I had set Boinc to not allow any network connection, before I was sure everything did run fine. Also of course, I had made a full backup of the whole Boinc folder.

I also noticed that the .bin files were recompiled automatically when the first v7 v6.99 (ati_opencl_sah) was started after card change. One example: now called: clFFTplan_Pitcairn_1024_r1643.bin, previously called clFFTplan_ATIRV770_1024_r1643.bin.

Only strange stuff now, is that GPU-Z (the latest one yes) does not have any sensor field for GPU load any longer, as well as a few other sensor fields that showed up with the HD4850. Catalyst Control Center though, shows the GPU load. I guess it's some strange stuff that will be fixed in due time. Also Boinc at startup only shows the GPU as "ATI GPU 0: ATI unknown (CAL version 1.4.1720, 2048MB, 3200 GFLOPS peak)"

Boinc's "Your computers" web page also shows the GPU as "AMD ATI unknown (2048MB) driver: 1.4.1720". Boinc doesn't seem to recognize my HD7870.

Ah well, it's fast though, very fast compared to the old HD4850. I'm happy so far.
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Message 45006 - Posted: 15 Feb 2013, 20:11:04 UTC - in response to Message 45004.  

Only strange stuff now, is that GPU-Z (the latest one yes) does not have any sensor field for GPU load any longer, as well as a few other sensor fields that showed up with the HD4850. Catalyst Control Center though, shows the GPU load. I guess it's some strange stuff that will be fixed in due time. Also Boinc at startup only shows the GPU as "ATI GPU 0: ATI unknown (CAL version 1.4.1720, 2048MB, 3200 GFLOPS peak)"

Boinc's "Your computers" web page also shows the GPU as "AMD ATI unknown (2048MB) driver: 1.4.1720". Boinc doesn't seem to recognize my HD7870.

Ah well, it's fast though, very fast compared to the old HD4850. I'm happy so far.

Yep, you need Boinc 7.0.29 or later to detect pitcarn GPUs, AMD doesn't have an api to detect GPU versions like Nvidia has, so it needs coding in Boinc:

client: Updates provided by Teamwork of Planet3Dnow.de to coproc_detect.cpp added CAL_TARGET_ID 21 as : AMD Radeon HD 78x0 series (Pitcairn) (from [P3D] Crashtest).


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Message 45010 - Posted: 16 Feb 2013, 10:01:01 UTC

Looks nice Sten.


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Message 45013 - Posted: 16 Feb 2013, 14:14:59 UTC - in response to Message 45010.  

Looks nice Sten.



And it runs like crazy, compared to the HD4850. It's been chewing through some MB 6.10 (ati13ati) on main now for some hours. In an hour or so, I will let it do some AP 6.04 (ati_opencl_100) here on Beta, and then some v6.99(ati_opencl_sah)

Unfortunately, it does also get v6 v6.05 (cal_ati) CAL Brook+ AP's, but even though they will take forever, I think I will crunch them anyhow, in case Raistmer needs the data.
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Message 45015 - Posted: 16 Feb 2013, 15:54:16 UTC

This is one crazy card :-)

First AstroPulse v6 v6.04 (ati_opencl_100) crunched. 0% blanked and finished in about 37 minutes. My old HD4850 would take about 3 hours and 45 minutes for a similar AP WU.

resultid=12762017
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Message 45016 - Posted: 16 Feb 2013, 17:51:54 UTC - in response to Message 45004.  

OK, first SETI@home v7 v6.99 (ati_opencl_sah) finished and validated with my new HD7870. resultid=12744254

I did have one problem though when trying to cram the card into my computer. I had to, (with some minor force) adjust the metal cover of the card (bend it out a little at one point) because there were some (unusually high) capacitors on the motherboard that was hitting the metal cover when I tried to put it in the PCI-E slot. I guess I can kiss goodbye to the warranty, but what the heck, no pain, no gain :-)

I also had to reinstall the drivers (still on 12.4) though, because the card had some issues at first. After the reinstallation of the drivers, it behaves fine. Of course I had made sure that Boinc did not start up before I was certain the card behaved. And I had set Boinc to not allow any network connection, before I was sure everything did run fine. Also of course, I had made a full backup of the whole Boinc folder.

I also noticed that the .bin files were recompiled automatically when the first v7 v6.99 (ati_opencl_sah) was started after card change. One example: now called: clFFTplan_Pitcairn_1024_r1643.bin, previously called clFFTplan_ATIRV770_1024_r1643.bin.

Only strange stuff now, is that GPU-Z (the latest one yes) does not have any sensor field for GPU load any longer, as well as a few other sensor fields that showed up with the HD4850. Catalyst Control Center though, shows the GPU load. I guess it's some strange stuff that will be fixed in due time. Also Boinc at startup only shows the GPU as "ATI GPU 0: ATI unknown (CAL version 1.4.1720, 2048MB, 3200 GFLOPS peak)"

Boinc's "Your computers" web page also shows the GPU as "AMD ATI unknown (2048MB) driver: 1.4.1720". Boinc doesn't seem to recognize my HD7870.

Ah well, it's fast though, very fast compared to the old HD4850. I'm happy so far.


I use a program called SIV that is very good. I use Gpu-z as well.
http://rh-software.com/
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Message 45017 - Posted: 16 Feb 2013, 17:53:34 UTC - in response to Message 45015.  

This is one crazy card :-)

First AstroPulse v6 v6.04 (ati_opencl_100) crunched. 0% blanked and finished in about 37 minutes. My old HD4850 would take about 3 hours and 45 minutes for a similar AP WU.

resultid=12762017


And you couldn't seew hat GPU load is had? I guess below 75% at 37minutes, maybe lower.
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Message 45018 - Posted: 16 Feb 2013, 18:12:47 UTC - in response to Message 45016.  


I use a program called SIV that is very good. I use Gpu-z as well.
http://rh-software.com/


Thanks for that idea. I downloaded SIV, and it is indeed very good. It shows the GPU load of the HD7870. So I guess they have to update GPU-Z to fully support the HD7870.
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Message 45024 - Posted: 17 Feb 2013, 9:06:30 UTC

Sten, on MB set -sbs 256 in MB_cmdline.txt.
It will speed up the app.

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Message 45029 - Posted: 17 Feb 2013, 11:03:24 UTC - in response to Message 45024.  

Sten, on MB set -sbs 256 in MB_cmdline.txt.
It will speed up the app.


One can wonder why app isn't self calibrating....
Or is that not possible?
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Message 45030 - Posted: 17 Feb 2013, 12:47:09 UTC - in response to Message 45024.  

Sten, on MB set -sbs 256 in MB_cmdline.txt.
It will speed up the app.


Done, will see what difference it makes.
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Message 45032 - Posted: 17 Feb 2013, 13:46:19 UTC

-sbs 256 was certainly not faster on the AR's I run now (0.43). On the contrary much slower. The completion times went from around 22 minutes, and up to over 25 minutes. I'll revert to the default.

-sbs 256 may be faster than default on other AR's, but for sure not on 0.43 AR WU's. At least not for me.
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Message 45033 - Posted: 17 Feb 2013, 16:46:07 UTC

Ok, some results.

No upping of -sbs made any postitive difference whatsoever. Tried 128, 256, and 512. Adding -hp when also having added -sbs values made no positive difference.

The thing though, that took the crunching times down was adding the following, and only having this in the MB_cmdline.txt file:

-period_iterations_num 10 -hp

Case closed for now.
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Message 45039 - Posted: 20 Feb 2013, 13:10:18 UTC

Its curious, on a 5850 it gives 25% speedup and on a 7850 and 7970 its 30% speed up running with -sbs 256.

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Message 45042 - Posted: 20 Feb 2013, 16:17:54 UTC - in response to Message 45039.  

Its curious, on a 5850 it gives 25% speedup and on a 7850 and 7970 its 30% speed up running with -sbs 256.


Well, I could if I wanted probably fine tune the card to produce 30% more than now, but I see no reason to do that. Even at this level and almost silent (max 60 C temp), it's extremely faster than my old HD4850 when it was working like h***, and having a higher temp.

I'm satisfied as it is, very satisified really. This card is hardly breaking a sweat, producing much more than the overworked hd4850. At this level, it will last forever :-)
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