F1A75-V PRO OC minireview with A8-3870K Llano

[FlanK3r]

How does the new AMD Llano, A8-3870K in terms of overclocking? And how is that supposedly the strongest [b] board F1A75-v [/ b] Also on this page? Will outline in detail the possibilities and achievements. If you would perhaps be interested to read the detailed description of the Llano and the motherboard in my view, the link takes you to this article:http://extrahardware.cnews.cz/forum/...p?f=38&t=20332


[b] 3870K-A8 processor [/ b] is trying to entice a buyer multiplier only open for part of the processor, but also for the graphics core. Anyway, it's easier debugging and a lot of work to be made when the clock locked siblings. Even though everything is fine-tuning as the Llano CPU and graphics at the same time perhaps the most difficult part of processors present. We have restrictions attached output when no signal we may fall out, there are a few links STRAP values ​​and memory clock running at graphics card via the BCLK, also increasing the NB-APU cycle. The speed can repeat that performance on the processor itself has an impact not only CPU frequency, but also its inner part (APUNB). The graphical part, of course, affects the frequency of the processor core and tact and timing of operating the processor can pamětí.Obecně nataktovat stable at 3500-3700 MHz and happiness according to GPU then it's around 800-900 MHz frequency stable. For the processor I've been holding voltages up to 1.55V (except validation) and 1.35V for APUNB, who is also the core voltage for the graphic. Aka Apu-PCIe voltage controller problems after I set "only" to 1.25V.

VALIDATION

The validation of popular software, I used the AI ​​Suite II, with whom I have excellent experience. Maximum boot into windows was possible while "only" at a frequency around 3750 MHz, high frequency idlení helped me the above-mentioned software. I shifted the voltage slightly above 1.55V and hope in the magic 4 GHz. And it really succeeded :-). The final stop on the frequency 4079 MHz.

http://valid.canardpc.com/show_oc.php?id=2251662

WPRIME

Wprime to 1024 was the most demanding benchmark, not different from the maximum boot. 3744 MHz was the final time-value of 314s that fit well. This corresponds to roughly calculate the speed of processor core i7-930 or slightly overclocked Core i5-2500K.


On the contrary, shorter wprime 32M managed to pass under 10s, which is already a nice value for the quad-core processors.


SUPERPÍ

Superpi to 1M decimal places with luck I somehow passed at 3900 MHz. I also tried other attempts, but they have not yet led to results. Time 19s, however, indicates that the processor trotlil maybe a little, not too effective. Superpí 32M I tried both the older Windows XP and the new Windows Seven.


The 32-bit Windows XP was the maximum for a longer calculation was 3770 MHz. So I have reached an outcome of the 3800 MHz clock, but the resulting time was worse.

[FlanK3r]

PIFAST BENCHMARK

Here I also used very high CPU clock-3876 MHz!


After the first part of today's 2D, we see that the board is doing with the APU processor really brilliantly and certainly one of the top motherboard socket FM1. Power circuits were only lukewarm, even after high overclocking. With this album, I think you can go boldly on some extreme games.

As I last lure you to the 3D tests, so now delivering on its commitment. And it was not easy for several simple reasons. The first reason is that my monitor is only output on the D-SUB or HDMI. This is partly a stumbling block. D-SUB leave BCLK frequency limit soon and you are literally in the dark-monitor will not display anything. The HDMI is the ceiling in my case 150 MHz bclk. Not bad, but can not get beyond the graphics at 900 MHz. Yes, it's a huge performance boost, but with more options, the BCLK graphics engine could stop somewhere up the 920-930 MHz for benchmarks. The second fatal end has become memory. Despite all efforts Hyper older chips I could not quite get over the 2000 MHz still acceptable timing. I replaced it and the other modules, but also those nehýřily efficiency even when I got them to the windows to almost 2400 MHz, the stability it had far. A lower divider I actually was there, as in the before case.

As the results can only take the best that were not always achieved with an integrated graphics core running at up to 900 MHz. Memory ran close to 2000 MHz CL9 timing.

Older benchmark 3DMark 05.




Even in newer APU 3DMarku06 pulled.




3DMark Vantage. Near to 6000p.




First slideshow in 3DMark11 :-)

[FlanK3r]

Power consumption
Upon request, a few fans, I also measured a total of four points of voltage and frequency of the total consumption of the PC without a monitor. Measurements were made using socket watmetru. Group contained the motherboard F1A75-V PRO, 2GB RAM 2x 2000 MHz at 1.75V, Corsair AX1200W (largely ineffective in this group), 1x HDD Samsung F1 500GB, 3870K-A8 CPU cooling Noctua NH-D14.
I first processor přetaktoval to nearly the maximum stable frequency to voltage 1.55V. It was 3728 MHz and 894 MHz processor, integrated graphics core. This would probably want to run the APU enthusiast or player who really does not have a dedicated card in prices around 3000 CZK. The second profile was reasonable overclock with a relatively low voltage (but not by tuning to the lowest limit), while maintaining decent performance even on iGPU. The CPU was at 3400 MHz, the graphical portion of 816 MHz. The third condition was the default (3000MHz and 600 MHz graphics core) with all energy saving features active. Interestingly, my piece was essential 1.392V voltage and the voltage is certainly quite exaggerated. The last condition was podvoltování CPU frequency. At 3000 MHz and just enough to 1.285V.


Graph.


As you can see, except the maximum OC is not very large savings in a state of calm. Even in the load is not a terrible number, only a little jumps maximum overclock. The default and reasonable overclocking is only 16W, and the difference if we take the other side, the default setting and podvoltováním is 18W. Anyway, these are measurable differences and a similar procedure can be done at home-saving PC. In addition, the Asus board is offset option and even that will help you shrink a little more consumption.


PS: I recorded the latest BIOS and now works for the divider bars iGPU better! It is possible to move the bars a little further.
PS2:sorry for english, I used today only translator, Im lazy rewrite all text from CZ to ENG :-D (Im tired from skiing)

[SUKARA@ASUS]

Good sharing!
Thanks~

[speed]

I have been wanting to build an APU machine to sell. Not really as a Gamer but office/internet machine I think if I put a gfx card with it it might make a mid level gamer too.

[hax0red]

I have about the same setup, this is my first full PC build and first attempt to overclock. My setup is:

Coolmaster 550 watt
Asus F1A75-V Pro
Corsair 1866 1.5v Vengeance Memory
Llano A8-3870k @ 3.6ghz GPU 900 overclock, same voltages as you with stock fan & cooler for now.
Samsung 830 64GB SSD
+ Few HDD's

Results: http://www.3dmark.com/3dm05/5458284

I have higher CPU scores but that's the best I can get the GPU to do. I just re installed windows to ahci so I'm going go test again. I have the memory @ 1.65v but cant get it to overclock much...any suggestions on the best ram? I'm not sure what the F1A75-V Pro can really handle...

[bikeman@ASUS]

Thank you very much~

[FlanK3r]

it is about chip at RAM, not about memory. Very good are mostof high clocks PSC chips. Example from GSkill or Geil. But todays is harder and harder to find perfect PSC...The changing at Hynix or Samsung chips. DOnw worry about voltage, PSC can have 1.75V without problems with air.

And btw Thanks for comments .