Overheating

Word of wisdom regarding the Kevari chip. The stock heat sink apparently is not sufficient if you overclock the chip. Big surprise right?

Nope, Llano, Trinity and Richland had the same. Those standard coolers ought to be replaced with those they send the 125 Watt tdp FX series away with.

http://www.goldfries.com/images/hwre...2x2-250_02.jpg
AMD stock 65Watt tdp cooler

http://imageshack.us/a/img43/7157/40681569.png
The more capable FX cooler

My A8-3870 sits under a Thermaltake Big Typhoon, my A8-3820 under a Cooler Master Hyper412S,
my A10-5700 under a -much bigger than the 65Watt tdp standard issue- former Athlon X2 5000 cooler, and is running stock speed.

The A6-3500 has been laid off, but has the cooler that came with the 100Watt tdp 3870K.

I had plans to give my son the A6-3500, but as I have to replace one of my present systems when I buy a Kaveri I think I give him the 3870K instead.
The Kaveri will either go under BIG Air or be water-cooled
http://www.vortez.net/index.php?ct=a...=file&id=10762
A BIG Air I had in mind: a triple 140mm fan Phantek

I'm finding the Kaveri uses far less power tha the old AMD 64 I replaced. I'll use the guestimated minutes of reserve power displayed by my battery backup for reference.

The battery backup powering the old system with one of the original AMD 64 chips always displayed 23 minutes as it's reserve. Sitting idle or fully loaded, 23 minutes.

The same battery backup now displays 84 or 85 minutes of reserve power running the kaveri at idle. 35 minutes with all 4 cores running at 4.3 ghz at 100% The Kaveri runs cooler than the old AMD64 but has less tolerance for heat.

I installed a coolermaster hyper T4 last night. At idle the reported CPU temp is around 34 to 38C depending on room temp, at idle. Full bore, 53 to 54c. With the stock cooler, it was never below 50C even at idle.

The system is generally running 24X7. Amongst other things, it's reporting weather data to weather underground and NOA.

Problem solved. Installed a larger heatsink and a second case exhaust fan and the system is stable at 4.3 ghz. This is what the motherboard automagically overclocked to.

Attachment 331

Not sure if this is going to work or not.

Nice screen shot! Kaveri@4.3GHz must be quite something performance wise
(500MHz overclock as compared to the stock Turbo speed, 900MHz higher than stock Standard)
Does the internal R7 hit the 1 TeraFlop in the Boinc Manager?

Well, I'm not sure what the R7 is to be able to answer that.

Attachment 332

I'm hoping this is what your referring to.

No, I was referring to the top lines of the event log of the Boinc Manager:
Attachment 333

Attachment 334

Is this it?

Quote:

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Originally Posted by rrcrain

Attachment 334

Is this it?

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Yes, that's it. I'd expect much higher values though...
Could you try to install the 13.11 Catalyst drivers?
And in the event that they do not work out, try the Catalyst 13.4 drivers and add the APP SDK kit (You might also want to add that to your existing driver)

The current driver does suppoer the Kaveri chip. A couple of weeks ago, I had to load the beta release of the Catalyst drivers. The current release is 13.12 I believe, quite a bit newer than the 13.4 release.

The 13.4 I mentioned especially as it is the last driver with CAL support!

My HD 7790 ran until yesterday under Windows 8.1 with that driver, that I had to re-install with every start of Windows 8.1 as it would replace it just as quick as I installed it, no matter what I tried to prevent it...
Windows 8.1 decided to crash yesterday and only the removal of the HD 7790 resolved my issues with Windows 8.1 &^%$#:5censored:MicroSoft:cussing:

Under 13.4 the reported GFLOP value for the HD 7790 was just over 2 TFlop, later versions report just over 1 TFlop and refused to run several BOINC projects. The by MicroSoft preferred driver couldn't even crunch...&^%$#:5censored:MicroSoft:cussing:

Microsoft is one of those companies I've learned to love and hate all in the same breath. I suspect an explanation is not needed.

I chose to avoid Windows 8 and went with Windwows 7 Pro instead. I've seen no compelling reason for Windows 8 on a desktop and will avoid it with a passion if at all possible.

The current Catalyst driver I have loaded is the first iteration that supports the Kaveri processor so I suspect there will be a few updates, tweaks and bug fixes before the dust settles. Since my motherboard automagically overclocked the Kevari 7700 by 900 mhz, I would not be surprised if AMD releases a new top end model in the future.

I am running two Win8.1 systems, one (English) with an Intel i3-2100 plus -until two days ago- two GPUs, a HD 7790 and a GTX 650; the other (Dutch) with a AMD A8-3820 plus a HD 6670 GPU.
When you're past the Metro screen it behaves pretty much like Win7 on the whole. As a -former- 2nd line engineer I'd like to stay in touch with as many current OS-es as possible.

I've found out in the meantime that both the GTX 650 and the HD 7790 are working correctly in the Win8.1 system when performing alone
(and I've also noticed again that the 13.4 driver gives me twice the computing power compared to later drivers for the HD 7790 plus that it has CAL support. For some reason Win8.1 seems to hate that driver though).

Updated BIOS, new numbers.

Attachment 335

I am still a bit surprized by the low GFlop figure, compared to my A8-3870K with it's supporting HD 6670 duo:
za 01 mrt 2014 12:03:50 CET | | Starting BOINC client version 7.2.28 for x86_64-pc-linux-gnu
za 01 mrt 2014 12:03:50 CET | | log flags: file_xfer, sched_ops, task
za 01 mrt 2014 12:03:50 CET | | Libraries: libcurl/7.32.0 OpenSSL/1.0.1e zlib/1.2.8 libidn/1.28 librtmp/2.3
za 01 mrt 2014 12:03:50 CET | | Data directory: /var/lib/boinc-client
za 01 mrt 2014 12:03:50 CET | | CAL: ATI GPU 0: AMD Radeon HD 6520G/6530D/6550D/6620G (SuperSumo) (CAL version 1.4.1741, 2048MB, 1812MB available, 1096 GFLOPS peak)
za 01 mrt 2014 12:03:50 CET | | CAL: ATI GPU 1: AMD Radeon HD 6570/6670/7570/7670 series (Turks) (CAL version 1.4.1741, 2048MB, 2026MB available, 1315 GFLOPS peak)
za 01 mrt 2014 12:03:50 CET | | CAL: ATI GPU 2: AMD Radeon HD 6570/6670/7570/7670 series (Turks) (CAL version 1.4.1741, 1024MB, 1002MB available, 1315 GFLOPS peak)
za 01 mrt 2014 12:03:50 CET | | OpenCL: AMD/ATI GPU 0: AMD Radeon HD 6520G/6530D/6550D/6620G (SuperSumo) (driver version 1214.3, device version OpenCL 1.2 AMD-APP (1214.3), 2048MB, 1812MB available, 1096 GFLOPS peak)
za 01 mrt 2014 12:03:50 CET | | OpenCL: AMD/ATI GPU 1: AMD Radeon HD 6570/6670/7570/7670 series (Turks) (driver version 1214.3, device version OpenCL 1.2 AMD-APP (1214.3), 2048MB, 2026MB available, 1315 GFLOPS peak)
za 01 mrt 2014 12:03:50 CET | | OpenCL: AMD/ATI GPU 2: AMD Radeon HD 6570/6670/7570/7670 series (Turks) (driver version 1214.3, device version OpenCL 1.2 AMD-APP (1214.3), 1024MB, 1002MB available, 1315 GFLOPS peak)
za 01 mrt 2014 12:03:50 CET | | OpenCL CPU: AMD A8-3870 APU with Radeon(tm) HD Graphics (OpenCL driver vendor: Advanced Micro Devices, Inc., driver version 1214.3 (sse2), device version OpenCL 1.2 AMD-APP (1214.3))
za 01 mrt 2014 12:03:50 CET | | Host name: ASUS-F1A75V-EVO
za 01 mrt 2014 12:03:50 CET | | Processor: 4 AuthenticAMD AMD A8-3870 APU with Radeon(tm) HD Graphics [Family 18 Model 1 Stepping 0]
za 01 mrt 2014 12:03:50 CET | | Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid pni cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt arat hw_pstate npt lbrv svm_lock nrip_save pausefilter
za 01 mrt 2014 12:03:50 CET | | OS: Linux: 3.11.0-17-generic

But I think it's the OpenCL-only that's hampering you. When my HD 7790 uses a OpenCL-Only driver it's reported GFlop value is 1248 or so, with CAL support added -the 13.4 driver- it goes to 2408....

I do not have the exact numbers with me, I'll try and post them tonight. I've updated the system to the Catalyst 14.4 drivers and the numbers went from 346 Gflops to around 430 something.

Hi rrcrain,

Regardless of the actual number of GFlops, how does the Kaveri 'feel' in everyday use?
Which GPUs can be used alongside?

I built this machine to be an affordable, middle of the road machine without expectations the graphics would be good enough for gaming. To that end, I am more than satisfied and all of my expectations have been exceeded. The graphics are good enough to run many games at an impressive detail level, but absolutely not max levels. Video performance would be noticeably better if I'd installed memory faster than 1600.

The machine is stable overclocked to 4.2 Ghz, I did have to increase the volage limits in BIOS to 110%.

To be brutally honest, if I'd have had an inkling of what could be done. I'd dfinitely have gone with a heavier dury processor. Having said that, The Kaveri still works encredibly well with streaming applications like "Play On" and "Play Later" and has enough juice to stream HD video to the TV while the wife watches a youtube video.

AMD recommends the Kaveri be paired with the R7 240 or 250 card. From what I've read, the 250 can be had for around 90% and will typically give around a 35% increase in video performance.

The machine "feels" extremely responsive. For day to day use other than heavy duty gaming, it is very sufficient.

Both gaming and crunching wise nothing stands in the way of teaming your A10-7700 up with a R7 260X