its been bugging me lately that i see my RAMs running in asymetric mode. what bugs me is first i dont know how to make it symetric as symetric is faster and better. but when i installed memset, it changed to symetric mode and reverted once i removed memset. can anyone help me correct this... rig in the sig...
sorry forgot to post the screenshot...
As far as I know asymmetrical dual channel is a result of using something like 1x1GB & 2x512MB.
This adds up to 2GB, but not all of it runs in dual channel mode.
But... you're using 2x1GB as far as I can tell...
Last edited by Rone; 12-17-2007 at 06:43 AM.
Looks like I've got the same thing going on. Of course, I'm with 4x1GB so maybe I can't change mine.
System: Core I7 920 @ 4200MHz 1.45vCORE 1.35VTT 1.2vIOH // EVGA x58 Classified E760 // 6GB Dominator GT 1866 @ 1688 6-7-6-18 1T 1.65V // Intel X25 80GB // PCP&C 750W Silencer
Cooling: Heatkiller 3.0 LT CPU block // 655 Pump // GTX360 Radiator
Sound: X-FI Titanium HD --> Marantz 2265 --> JBL 4311WXA's
Display: GTX480 // Sony GDM-FW900
rock&roll,
try installing memset and see if it changes to symetric...
r00n,
yes i am using 2x1gb RAMs and i reall am bothered with it that it shows asymetric.
still looking for answers... anyone???
If you have the ram installed in the proper slots on the board, then you are running dual Channel.
The asymetric/symetric was added due to the new Phenom CPU, IIRC. You would have to ask Franck (cpuz) since he wrote the program to be sure.
You have no control over assymetric/symmetric in most bios', I believe the default mode for all memory controllers prior to the one on the Phenom is Assymetric.
Stop worrying
i;m not really worried, its just bothersome as with symetric mode(when memtest is installed) the performance of my cpu is much improved compared to what it is now. we're all performance junkies thats why we upgrade so much that is why i'm upset why i cant get that extra performance boost. though thank you for the explanation it does help. BTW it also reflect in superprime besides CPUZ....Stop worrying
asymetric mode does not refer to dividers (1:1, 3:8, 5:4, 2:1, etc).
All along the watchtower the watchmen watch the eternal return.
I do not understand what you mean here. You are saying that you switch between symmetric and assymetric by installing or uninstalling a program?Originally Posted by timber715
As I said...I am almost 99% sure, you cannot change symmetric or assymetric unless you could re-write the bios or remanufacture your Memory controller/motherboard.
AFAIK that field is greyed out unless the chipset is one of the nForce Intel editions or Intel P/X-series, or the program detects a Phenom, in which case it shows either ganged or unganged. I don't think any of the screenshots show a Phenom, as there are no NB frequency readouts.
How can lockstep mode (which would now be called ganged mode) possibly be considered asymmetric? If anything, Phenom's unganged mode is much closer to fitting that definition, but even that seems like a reach.
Last edited by Quintero; 12-17-2007 at 02:33 PM.
If I am giving out the wrong info...please tell the OP the right info. You are quoting me, as if I know. I have stated that I am not sure about what I have posted.
I have not seen any Symmetric screenshots, only Assymetric. When I said this field was added...I believe Franck added it, when the Phenom showed up "in the wild" and the "ganged and unganged" mode became known among the masses.
Just because CPU-z didn't show this info before, doesn't mean that Symmetric and Assymetric didn't exist before, so now we need an Intel or Nvidia chipset engineer to tell us what that means on its memory controller...similar to the description that has been given to us in regards to Ganged and Unganged.
Is that a fairer description?
If you are running 2x1GB then it is a cpuz bug, should be symmetric mode.
I hope this clears things out (the following refers to X38 but other chipsets are similar):
Dual channel symmetric mode is used when both Channel-0 and Channel-1 DIMMs are
populated in any order with the total amount of memory in each channel being the
same, but the DRAM device technology and width may vary from one channel to the
other.
Stacked Asymmetric Mode
In this addressing mode addresses start in channel-0 and stay there until the end of
the highest rank in channel-0, and then addresses continue from the bottom of
channel-1 to the top.
This mode is used when both Channel-0 and Channel-1 DIMMs are populated in any
order with the total amount of memory in each channel being different
L-shaped Asymmetric Mode
In this addressing mode the lowest DRAM memory is mapped to dual channel
operation and the top most DRAM memory is mapped to single channel operation. In
this mode the system can run at one zone of dual channel mode and one zone of
single channel mode simultaneously across the whole memory array.
This mode is used when both Channel-0 and Channel-1 DIMMs are populated in any
order with the total amount of memory in each channel being different
ftp://download.intel.com/design/chip...s/31846901.pdf
...
I'm not saying that I have all the answers, but I should still be free to make inquiries about claims that I don't fully understand. Go to any forum and you'll find lots and lots of posts that aren't specifically designed to solve the OP's issue. XS is no exception, and most people seem to be okay with that. I think I somewhat helped to clarify this matter in ruling out Phenom's ganged/unganged mode, and in stating that the (a)symmetric feature is not solely a Phenom feature. But I also think that kiwi provided info that was far more illuminating and relevant to the topic
I never said that they didn't, but you OTOH seemed to suggest just that when you assumed that asymmetric mode was the default for all controllers prior to K10. That assumption was clearly wrong, and just because you didn't claim to know it for positively sure, doesn't mean I was wrong to address that issue. Right?
My understanding is that any dualchannel mode which requires each channel to see the same amount of memory can only support symmetric mode, which is certainly the older and less complicated method of the two. Asymmetric mode seems to allow for physical addresses that are represented on both channels to be accessed simultaneously, whereas the addresses that don't have a "twin" on the other channel are naturally accessed in single channel. That would be the case if one were using for example 512 + 1024 MB, but just like kiwi I think CPU-Z is probably bugged. Why would two identical modules run in asymmetric mode?
Last edited by Quintero; 12-17-2007 at 05:44 PM.
I have not seen any Symmetric screenshots, only Assymetric.here are the screenshots... this one running without memset installed...Why would two identical modules run in asymmetric mode?
this one WITH memset installed...
these are identical RAMs from one 2 x 1gb kit of crucial ballistix PC2-8500...
i dont thing that its a CPUZ bug as it also shows in superprime, aslo the performance difference between the two can be seen on the screenshots....
information on the matter still not found/confirmed...
this is mine cpu-z showing symmetric mode
Intel DX58SO
Core i7 920 DO
Kingston HyperX DDR3 1600
ATI HD4890
Silverstone 850W
Swiftech WC
thats nice, but do you have any answers to the question?this is mine cpu-z showing symmetric mode
Mine is always on symmetric with or without memset.
so does almost everyone, the question is do you know why it turns asymetric even with the conditions stated above... would be nice if you could readMine is always on symmetric with or without memset.
...strange; I see that you use the memset save function: first delete save,
reboot and open cpu-z, open memset (don't apply any setting)
and re-open cpu-z.
FELIX, when i do that it reverts back to asymetric......strange; I see that you use the memset save function: first delete save,
reboot and open cpu-z, open memset (don't apply any setting)
and re-open cpu-z.
its your program thats making my rams work properly... thanks btw...
hope you can help, got to go for now... will catch up later... cheers
Your superprime screenshots show you are changing between 2T and 1T.
All along the watchtower the watchmen watch the eternal return.
stevil,
funny but when i removed the automatic setting for the command rate and set it to 2T, cpuz still doesnt reflect it. but it is still in asymetric mode even with CR set at 2T in bios...
ryderOCZ,I do not understand what you mean here. You are saying that you switch between symmetric and assymetric by installing or uninstalling a program?
As I said...I am almost 99% sure, you cannot change symmetric or assymetric unless you could re-write the bios or remanufacture your Memory controller/motherboard.
as you can see the screenshots in earlier post, they do change with the installation of memset and no remanufacturing is needed...
FELIX,
as soon as i turn off memset, the dual channel mode returns to asymetric...
could this be due to the ACHI controller? sounds weird but its the only thing i havent checked yet in the bios settings.
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