My Llano Overclock

[ItsAlive]

Hey guys and gals I picked up a new Llano to play with and thought you might enjoy some good ole overclocking results.

SPECS:
Chip: A6-3650
Board: MSI A75MA-G55
Bios: v1.3 Official
Ram: Gskill 2133mhz Model F3-17000CL9D-4GBXL
Timings: 1750mhz 7-7-7-21-28-5-10-5-5-1T @ 1.64v
Cooling: AC Freezer Pro 64 <---yes I need an upgrade

First Attempt.



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Second Attempt.



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I think the ram wasn't liking the 26x multi so I dropped it down and got a few more mhz's out of it. It might go further with a little more tweaking, but so far I'm please with it. I wasn't sure how accurate HWMonitor was for the temps, so if you have any suggestions for something better I'm all ears.

Thanks for checking it out!

 

[Silverforce11]

good stuff. no settings for ram speeds?

i think my next rig will be Llano BE unlocked. seeing them go to 4.9ghz is pretty crazy good perf for how cheap they are.

 

[mosox]

Wow, it looks like that mobo can overclock the heck out of any Llano not just the ones with the GPU disabled.

Many reviewers (Anand, Techpowerup, didn't even bother to OC the Llano in their reviews. Those who did, got lower frequencies.

 

[cebalrai]

Hmm, I've been sitting on an A4 build. Guess I'll see what I can get out of it...

 

[Rifter]

now thats turning it up to 11. Good job.

 

[ItsAlive]

good stuff. no settings for ram speeds?

i think my next rig will be Llano BE unlocked. seeing them go to 4.9ghz is pretty crazy good perf for how cheap they are.

I had alot of slack in them so I was trying to tighten them up a bit. I ended up having a bit of instability when rebooting so I tweaked the OC some more.

Heres what it looks like now:

4264 mhz @ 1.46v bios, 1.456 in cpuz
26x multi
164 FSB
1750 mhz RAM
7-7-7-21-28-5-10-5-5 @ 1T

Have to check for stability, but I have rebooted several times and no hang ups yet.

It looks like the limit on the FSB for my board is 164, I might be able to squeeze a bit more out of it if I up the NB voltage some more, but shes sittin at 1.25 now and Im not sure what safe max is. I know its not the RAM and adding more CPU voltage doesnt seem to help. I also clocked the NB down and that didnt seem to help either, I think it must be FSB holes, I tried every tick all the way up to 185 and none of them held.

 

[blckgrffn]

Are we not seeing ~4Ghz Axxxx chips because AMD doesn't want to cannibalize the Bulldozer space?

Otherwise, given that they are still under the 100W envelope (right?) this would make some compelling CPUs at $100 and less (4Ghz stock speed.)

Are there BE editions of these chips now?

Did you have to disable AHCI, use IDE mode, to get the FSB up that high? It seemed like others were defeated by AHCI+FSB clocks causing poor stability.

In any case, great post

http://www.overclock.net/hardware-news/1070353-lr-llano-black-edition-coming-q4.html <-- Found info on Llanno BE. Q4, evidently. Hopefully they will release a version that is not an APU. If you are getting a chip to send to mid 4Ghz, you probably have a video card...

http://news.softpedia.com/news/AMD-...n-APU-Breaks-3DMark-World-Record-214395.shtml <-- More of the showy world record breaking (3Dmark score w/integrated graphics)

 

[Rvenger]

Wow, impressive. I need to update my bios and start overclocking my A6. Mine fsb can't go past 133 so hopefully AsRock will learn something from MSI.

 

[sm625]

Can you give us a super pi mod 1.5 time?

It should take about 16 seconds to do a 1M run. Also, can you verify with a stopwatch that it actually takes the time shown? There are some who are claiming that the real time clock itself might have gotten whacked.

 

[ItsAlive]

Can you give us a super pi mod 1.5 time?

It should take about 16 seconds to do a 1M run. Also, can you verify with a stopwatch that it actually takes the time shown? There are some who are claiming that the real time clock itself might have gotten whacked.

My Super Pi 1M time is 24s and wPrime just over 13s. It doesnt seem right since an A8 gets 20s at 3.6. Could my harddrive be causing the slow times?

Did you have to disable AHCI, use IDE mode, to get the FSB up that high? It seemed like others were defeated by AHCI+FSB clocks causing poor stability.

Im actually running a WD Caviar Black 500GB HDD on this system in IDE mode, it is my backup PC. My i5 is in transit as we speak, should be here on Monday. I dont happen to have an extra SSD laying around to test with so I couldnt say wether the FSB would conflict with it or not.

 

[Rvenger]

My Super Pi 1M time is 24s and wPrime just over 13s. It doesnt seem right since an A8 gets 20s at 3.6. Could my harddrive be causing the slow times?



Im actually running a WD Caviar Black 500GB HDD on this system in IDE mode, it is my backup PC. My i5 is in transit as we speak, should be here on Monday. I dont happen to have an extra SSD laying around to test with so I couldnt say wether the FSB would conflict with it or not.

Cool and quiet and cstates disabled? That really trashed my SuperPI results when I had them enabled.

 

[sm625]

My Super Pi 1M time is 24s and wPrime just over 13s. It doesnt seem right since an A8 gets 20s at 3.6. Could my harddrive be causing the slow times?

No not really. Windows can create and edit a file very quickly. It can be done working with a file before it even talks to the HDD. That is one of the things that makes windows so much faster than linux...

But anyway yeah 24s is awful. It looks like you're not really running at the speeds you say. 24s sounds like a stock superpi time. You should try various stock and underclock settings and record the superpi time for each setting. I would run it multiple times so it can capture the best time. Delete "pi_rec.dat2" every time you change clock speeds so it will reset the best time. You should be under 17 seconds at over 4GHz.

 

[ItsAlive]

Well I have benchmarked with fritz and it has increased from around 6500 to 7800 from the overclock. There is an option for Pstates in bios and Im not sure how to use them exactly. I have cool n quiet disabled.

 

[Idontcare]

Well I have benchmarked with fritz and it has increased from around 6500 to 7800 from the overclock. There is an option for Pstates in bios and Im not sure how to use them exactly. I have cool n quiet disabled.

Fritz chess is highly dependent on memory bandwidth:

^ on a stock 2.4GHz Q6600 I could get scores anywhere from 6300 to 7000 just by simply changing the memory speed.

For the CPU OC you are reporting, the Fritz scaling numbers are abysmal...or the OC itself is not actually taking hold (akin to all the false-start "zomg I can OC my llano to 4.9GHz, its multiplier unlocked! " threads we saw a few months ago).

 

[antisocialmunky]

Random question, someone on xtreme systems has said that the Lab Burst Mode operates as a RTC manipulator. Can you time your benchmarks independently (clock and see if the times match up?)

Can you increase memory frequency at all with stability? 800 seems really low. Even the Chinese guys were running at 1333.

 

[mosox]

My phenom II 955 (B55) stock Super Pi 1M = 21 -22s

Passmark

http://www.passmark.com/download/pt_download.htm

 

[ItsAlive]

Ok I reset cmos and reflashed the bios just to see if I had a bad flash and still same results. At stock speeds Im getting 28s Super Pi. It seems some kind of automatic voltage adjustments are occuring, even when all power managment features are disabled. I honestly have no idea whats going on with it, but I do agree the benchmarks are seriously sucking.

 

[antisocialmunky]

And its the manual reflash and not the live updater right?

 

[KingstonU]

Don't Llano cores have ~6&#37; IPC increase over Phenom II?

Bulldozer has like ~-15% IPC under Phenom II. So better to just by a Llano and OC to 4GHz+ no?

 

[cebalrai]

I'm running Prime on my A4-3400... 2.7 ghz testing at 4.0 ghz currently. 46 degrees, appearing stable... AsRock board.

Incidentally does anyone know why the CPU frequency doesn't throttle down when idle? Even when I reset the BIOS it stays at 2.7 ghz. Cool and Quiet is enabled...

 

[SickBeast]

You might want to enable C1E as well if you have the option.

 

[antisocialmunky]

Button managed to get weird throttling to (mostly) stop by setting p-state to 0

http://hardforum.com/showthread.php?t=1643127&page=5

 

[cebalrai]

I'm running Prime on my A4-3400... 2.7 ghz testing at 4.0 ghz currently. 46 degrees, appearing stable... AsRock board.

Incidentally does anyone know why the CPU frequency doesn't throttle down when idle? Even when I reset the BIOS it stays at 2.7 ghz. Cool and Quiet is enabled...

Well my little A4 is testing Prime stable at 4.7 ghz, which is as fast as my AsRock A55M-HVS will let it go. Stock voltage, stock cooler, 43 degrees.

So... why does AMD sell these things at 2.7???

 

[Silverforce11]

Well my little A4 is testing Prime stable at 4.7 ghz, which is as fast as my AsRock A55M-HVS will let it go. Stock voltage, stock cooler, 43 degrees.

So... why does AMD sell these things at 2.7???

Cos they are bloody stupid, if they had released Llano Black Edition at launch, i would have gone for it.

 

[cebalrai]

Cos they are bloody stupid, if they had released Llano Black Edition at launch, i would have gone for it.

Silly. Guess I'll try undervolting it now.

Overclocking a processor another 2 Ghz while undervolting? Huh?