I figured it out...all is well...

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Actually Glen, everything is pretty much stock at this point. I had to reset the MB BIOS just to get it to boot up with the new PSU and GPU. I have looked but cant find, a clock utility to slow down the GPUs. The Tahiti chip was originally released at 800mhz, my model in particular was released at 1030mhz, hence the 280X badge versus 280. I was hoping to slow them down a few ticks just to reduce the heat, They are running at about 77 to 81C. Anyhow, everything seems stable for now.

Sorry i was talking about the CPU on my MoBo it's called turbo and i can maualy set the clock speed

77 on the GPU is hot if the Fan is 100% if not at that turn it up afterburner i think will do that but others will correct me if it's wrong

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Afterburner! That is one I haven't tried. Thank you! Sapphire Trixx didn't work and Powercolors app is trash. I am also looking at replacing two fans with higher CFM fans if possible. I can't go larger, unfortunately. I have a HTPC case so I am limited as to my options. I may have to go back to a tower.

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I had a problem with temps. And with no more room to mount a fan inside the case. I got creative. The fan is a high velocity fan. I taped the duct to the inlet side. So air only went through the duct. Then using the fan on low. I placed the dryer duct over a unused case exhaust and dropped the temp 14°f.

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Nice! Too funny...

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AMD vs. Intel -- the war is lost, as Su's co. bleeds badly

AMD releases yet another set of dreadful numbers. It's doing really badly at its bread'n'butter -- selling CPUs and GPUs. Its custom SoC business is the only highlight in a dark, dark story.

Look, I want to root for the underdog, I really do. $DEITY knows, we need competition for Intel and nVidia. But OM$D, this is a disaster.

In IT Blogwatch, bloggers break out the last rites.

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Thank you Glen and Afterburner. I have my temps down to below 80C again. I'll wait and see what it does to my RAC. I did, however, lose my CPU...wtf!? Not going to fight with it tonight. I'll check my app_config tomorrow.

gnite all and happy crunching...

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O.k. Afterburner has done what I wanted it to do. I think I have found the sweet spot, 880mhz on the GPU and 1500mhz on the mem. 8 GPU tasks and 4 CPU tasks running stable. I tried the new CCC 15.5 drivers again (used amdcleanuputility1.4.0.0 first), I think they need work, back to 14.12 for me.

Both GPUs are well under 80C and my proc is at 46C. GPU-Z says I'm pulling about 83amps across my 12V buss. I can live with that. I still need to find some fans though.

Peace all and happy crunching...

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Good to here After burner works for you Louise

80 on the GPU's is still warm i don't use afterburner , i use the program that comes with the GPU , but i'm also using Nvida cards . I turn the GPU fan up in summer or you can try auto witch works ok for me too. My Gpu's doing 2 AP's at a time per GPU i have 2 and are currently at 40 and 39 C air temp 18 Fan at min 50% , in summer they will get to 60 with air temp of 32 and fan pushing 80%

and open the case if you haven't already done that . The program for my GPU is XtremeTuner Plus .

your doing 8 GPU tasks ? at the same time ? 4 per card , I'm thinking you may do better at 3 , more is not always good you also need to leave 1 cpu core per GPU to feed it

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Yea Glenn, kicked it back to three each. Had some stability issues that took some time to show up. Six total on the GPUs, six on my CPU. My PC is still responsive and I haven't any freezing or lock up issues.

I didn't think clocking back the GPUs would help but, it took a full 6 or 7C off of my temps. Cruising at 42C on the CPU (4000mhz) and 74C on the GPUs (950mhz GPU/1500mhz MEM). Still just South of 70amps on the 12V buss.

I really appreciate the information you guys have given me. I really am interested in this stuff, I just need to keep learning.

Peace! and happy crunching!

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No worry's louise your R9 cards will fly when you load up on AP's in the next few days (probably Wednesday after the outage) but remember with AP's it's 1 CPU core per unit not GPU so max of 2 per GPU card and 4 CPU units .

Because the FX chip has only 1 FPU i think it's called you only have 4 cores as they have to share the FPU when doing AP's units not so much with the MB's .

I do 2 AP's per GPU and 4 CPU one's . Just doing 4 GPU unit's will push the CPU to 50% utilisation on the task manger so you can only do 4 on the cpu to take the chip to 100 % it will start to hang badly if you try to do more , it will do more but you won't be able to do much

Happy crunching

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Hey Glenn! It's an old Reddit post, I found it interesting though. I certainly understand the differences and logic behind CPU design a bit better (AMD vs Intel). I understand your point about the FPU also. Thank you.

http://www.reddit.com/r/buildapc/comments/1e8226/

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To be more precise the FX CPU has 4 modules with 8 cores but just 4 FPU`s 1 per module.
So 2 cores have to share 1 FPU.
Since seti is using merely the FPU its better to keep CPU utilisation below 50%.

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With each crime and every kindness we birth our future.

Yes Glenn, agreed. I was wondering what you meant, that is why I tracked down the article. Learn something new every day.



My little puter; AMD FX-8350, 16gigs of G-Skill Ripjaws PC12800, 2 - R9 280Xs on a Gigabyte MOBO in a HTPC case. It is running very well right now...

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Very nice machine mate i see you have the Liquid cooling witch i also had to get Being in Australia :)

I also have a Gigabyte MoBo 970a-D3p 16 gig of ram at 1600 mhz slightly faster then yours not that it will make any diff running dual channel but your R9 cards are faster than my GTX 650's :)

Your rac should be faster than mine once you get a few weeks loaded up with AP's so you should be well over 25,000 mine just peeked at 24500 but i'm running out of AP's till tomorrow so back to MB's and a lower Rac booo hooo well for a few days anyway .

Happy crunching

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Sorry i can't post a picture of my system up but there is a picture somewhere on the boards i've try'd to find it but can't remember what thread it was posted in

Bit dogy thou having the radiator outside the case . I noticed you have 2 case fans do you realy need them with the liquid cooling ?

I have my radiator where you have the case fans on the inside . I have a case fan in the front panel that sucks air out of the case and over the H/D's and i have the side panel off . But even with the side on it doesn't get that hot anymore with the Liquid cooling only the GPU's get a bit warm with the side panel on .

With the radiator sucking air out off the case the PSU sucking air out and the fan in the front panel sucking air out i find that it does not get that hot inside the case anymore .

Maybe move the 2 fans you have to the front panel . or is that a desktop case and not a tower can't tell but does look like it . They are notorusly bad for holding heat in

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I just remembered how to upload photos myself, I'm using Photobucket.

Anyhow, the radiator outside of the case is mounted on an adaptor, the existing mounting point was a 90mm, had to adapt it to a 120mm fan on the radiator. The case fans are stuck there, no more mounting points and they pressurize the case they don't evacuate it. I am pumping in air for the problem children, those two R9s. They are the hot spot.

And yes, it is a glorified desktop, a HTPC (Home Theater PC) case. It is tight! However, in a 23C ambient I am still holding 45C on the processor and still well under 80C on the GPUs. I found some high volume fans on Newegg though, 40CFM vs. the 27CFM I have now. I may purchase them next week.

Anyhow, bedtime for me. I could talk about builds all night long.

Peace Glenn!

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Been a while since I posted to this thread. To get back to main focus of improving AMD performance versus the status quo of Intel processors, I hope everyone running an AMD FX processor has installed the required Microsoft AMD Scheduler KB's. They are not automatically installed by Windows Update. It is up to the AMD user to install them manually. KB2645594 corrects Windows 7 process scheduler to allow the AMD core module architecture to work properly. If you hadn't installed this patch you wouldn't have been using all your cores. Along with KB2645594 you also need to install KB2646060 which disables core parking which again could make Windows not use all your FX cores. Just wanted to make that fact known since it hadn't come up in the thread before.

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Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)

Users with high end GPU`s from AMD using 15.x beta drivers should update to Cat 15.7 ASAP.
Its faster with less CPU usage.

APP runtime version 1800.5.

I'm on 15.7 and I find the HD5 apps are throwing errors. r2889 for sure and r2489 maybe. Apart from that it's working well.

No CPU apps and Cool n Quiet + the other energy saving things enabled. The GPU utilization is pinned at 100% running 2-up. That's great.

I removed omega, ran DDU before the install.

Been a while since I posted to this thread. To get back to main focus of improving AMD performance versus the status quo of Intel processors, I hope everyone running an AMD FX processor has installed the required Microsoft AMD Scheduler KB's. They are not automatically installed by Windows Update. It is up to the AMD user to install them manually. KB2645594 corrects Windows 7 process scheduler to allow the AMD core module architecture to work properly. If you hadn't installed this patch you wouldn't have been using all your cores. Along with KB2645594 you also need to install KB2646060 which disables core parking which again could make Windows not use all your FX cores. Just wanted to make that fact known since it hadn't come up in the thread before.

An update is available for computers that have an AMD FX, AMD Opteron 4200, AMD Opteron 6200, or AMD Bulldozer series processor installed and that are running Windows 7 or Windows Server 2008 R2

I have some question regarding this topic: can A-10 and C-60 APUs be considered as "AMD Bulldozer series processor" regarding this issue ?