im not sure i think its based on the imc on the chip. amd has alrdy stated in the past its not possible. and at one point i was mentioning to an amd employee i was thinking about getting another 2 sticks of 1066 ram so i could have 4gb and he said that the memory controller can't handle all 4 sticks.Quote:
Originally Posted by crazydiamond
Yea No problems here also with 4 sticks @ 1066. have OC them to 1227
http://img90.imageshack.us/img90/765/everest33qv9.png
i know it says thats what it is running at but im not sure if it is actually true. amd has said it can't be done and there have been other people like mainboard manufactures that say it cant be done. its just there hasn't been any proof of it either way. its not that im trying to argue im just trying to get to the bottom of something that has had me confused for awhile. i can't find any good links on the topic but heres one from amd's website: http://www.amd.com/us-en/Processors/...E15334,00.htmlQuote:
Originally Posted by HondaGuy
this leads me to believe that maybe possibly the sticks could run at faster speeds but you will not see a performance boost because it can't handle it. 8500 x2 = 17000 which fits within the 17.1 GB/s specification. now i don't know too much about overclocking but it appears at stock settings all it can handle is 2 sticks at 1066 each. im just not very sure about this topic since the only people that have stated that you can run 4 sticks at 1066 are people like forum users but not official reps from amd.Quote:
Up to 17.1GB/s memory bandwidth
im pretty sure someone else is running 4 sticks in 1066 mode on the asus m3a79-t
maybe asus has better bios? i dont know how everest, cpuz, bios, etc woudl all show 1200mhz but its really running at 800
HondaGuy whats wrong with your write score?
6000mb/s seems like what 800mhz 5-5-5-15 is capable of.
well im not 100% sure what would be going on. all i know is that based on the specifications and what amd has said its not possible. and it all makes sense as well. im sure people could look into it and see what performance benefit you get by messing around with the speeds. ill try to look for the thread but tony has said in the past that he could get 4gb to work but had to loosen the timings.Quote:
Originally Posted by crazydiamond
edit: http://www.xtremesystems.org/forums/...light=4gb+1066 theres a lot of info in this thread about stuff like this but its hard to find as it became so huge.
Look at goTVoltage's He's running 1066 also his score was about 6700's. Whats yours running at?Quote:
Originally Posted by Caveman787
http://img352.imageshack.us/img352/1...3604mhzgo9.jpg
Here is mine Again UNganged:
http://img183.imageshack.us/img183/2...everestga9.jpg
Here is Ganged. same settings
http://img183.imageshack.us/img183/6...ngedramtk3.png
Not mine but you get the idea.
http://i308.photobucket.com/albums/k...cachemem-1.png
what do you typically run unganged or ganged? i have always had the idea that unganged is better because its better for multithreaded which most programs are becoming today.
i generally keep mine unganged
Hey there Crazy, would you mind doing a everest test? just wanna see what you getQuote:
Originally Posted by crazydiamond
any more thoughts on this whole 4 sticks of 1066 idea? i don't know how to prove it since idk wtf would be going on. 2 sticks at 800 and 2 at 1066? idk its just weird.
i have to keep my ram on 800 divider honda guy, mobo or cpu is too picky with these g.skills, even w/ only 2 sticks i cant find much stability @ 1066... what settings did you want me to run them at? i can do anything lower than around 960mhz 4.4.4.12 :D
Just flashing BIOS back to 1102 and trying the ram again, since roofsniper pointed out the 1202 bios is suppose to fix the 1066 issue down to 800
Dont worry about it Crazy I'll just downgrade BIOS......Fingers are crossed
EDIT: OPS now it wont even post, just black screen.........Clear CMOS nuttn....
i think the reason why they did that bios update was for stability. i doubt it changed performance in any way because i bet the ram is running at a faster speed than the controller can handle it but it doesn't harvest this power it just wastes it.Quote:
Originally Posted by HondaGuy
yeah true no idea how to tell....i guess with testing to compare results would prove if its faster ...whats a good memory benchmark?
Looks like I have some bad ram ATM....just running mem test now, so far I have 2 bad sticks......What are others running for ram? I was looking that some OCZ Flex.......
i was guessing the same but i really don't know what is going on. some sticks could be running at 1066 while others aren't, they could be running at 1066 but the cpu can't use all that power, idk its too hard to tell. i would try running them all at 1066 and then at 800 and see if there are any differences. then maybe even try them all at 1066 and then trying 2 at 1066. but this would require a benchmark that uses a very small amount of ram so the change from 4gb to 2gb doesn't affect it.Quote:
Originally Posted by tbone8ty
this is 4 x 1066 test.... DRAM volts at 2.2V
ganged
http://farm4.static.flickr.com/3080/...492f46d9_o.png
unganged
http://farm4.static.flickr.com/3090/...2f258f5a_o.png
just compare'n those number with mine,,,I was on BIOS 1406 also,,,, I see your running older version of everest....you should download a newer version....
because unganged splits the memory controller in half so it can improve multithreaded fuctions running a single threaded application will have decreased performance.Quote:
Originally Posted by tbone8ty
Quote:
Originally Posted by HondaGuy
The flexs are pretty good.. Also the New Balistic 8500's are suppose to clock nice.
So far ive had good results with Viper9600 microns),,Flex 9600 micron?,, Kinston Hyper X(micron ) and the Baliistics 8500,s(Qimonda?).
Ive let my brother use a bunch of Ram last week,, im down to Dominator 8500's(Micron)1140mhz max Phenom and Patriot Viper9600 1220mhz..and patriot 6400LLK 7200's(1040max) all 2x1gig kits. Dominators run decent to 1100 and need to be very loose to 1140. The Vipers and FlexII have run 1200+ stock timing depending on the Multi im using. Ive had//tried the Flexs9600's and Ballistic8500's as i have ordered them for friends ,,but have none for myself. They too run like a bat outa hell too. Im eying the new Gskills Black heatsink,, but waiting for price to drop.
Note:
The Dominators have been the buggiest of all ram ive ever tested on Phenom Bioses. They wont Run Jdec 1.8v or be detected after a clear cmoos like all the Others. You mus thave Bios set to correct volts and if you clear Cmos youll have to install a nother brand to set the Voltage again . i ve tried numerouse sets to have the same thing happen. the ones that are the most stable are Micron based and still will not be detected unless Bios is 2.2v
Besides all that ... If you Bench Everst with 1066 and then swap the Ram for 800 while using Same Multi's and such you should see a Drop in performance. Especially if you are overclocking the NB..
1066mhz with lower latency or the same latency as 800mhz will perform much better than 800mhz . Every time ive ran 800 @ 5-5-5-15 then went to 1066 5-5-5-15 ive gained ,,speed ,, latency and bandwidth at same timing.
1066 mode or freqency is definatly working on this Mobo and CPU..What ive Noticed is that depending how you set the latency or timing depends on how you take advantage of this.
Same Clocks CPU/NB/HT and Ram MHZ,,onlything i changed is Unganged and Latency.
Ganged was the fastest to run ram with High Nb for me ,, Untill now. Once you can lower the Latency( Cas from 5 to 4 Unganged comes alive. This also means your Multi apps can run at thier Optimal. Bench marks will improve too.
SuperPi and Everest Ganged Stock latency VS Unganged LOW Latency @Same System clocks and settings,
http://i168.photobucket.com/albums/u...30_3550mhz.jpg
http://i168.photobucket.com/albums/u...cyUnganged.jpg
Note:
I know if i use Ganged @ the same 4-4-4-15 it be even faster but may be unstable @ high NB Time wise. Im showing what you can do by upping the performance of Unganged which many times you can USE lower latency more than Ganged . Why is this ? You can now use the two IMC's,,see having the the Dual IMC instead of the single is a hidden bonus if you know how to tweak it. This actually helps to keep things stable too. Its nice that Phenom actually has two IMC's using 64bit and or Both Conbined (locked) as a single using 128bit. You mise well use both IMC's . Ganged just locks them to use two lanes instead of 4. 4lanes will allways be better you just need to know how to get on the freeway:D
Think of it this way .
128 dual channel 1xIMC = Two,,128bit lanes.
64bit dual channel 2xIMC =Four ,,64bit lanes.
If this was a freeway ,,id rather have four lanes vs two. More efficient,, thus four lanes are more than two lanes despite the bits. Both hadle the same amount of bits and four lanes will handle more apps running at the same time vs two lanes . Two lanes which will have to work twice as hard for the same info as four.
Thats the best i can descibe Gnaged vs unganged and why lowering latency in Unganged can improve the system more and while actually keeping the load down on the IMC's.
Hope this was helpfull..
P.s. 1066 is running full speed on this Mobo and with Phenom.. Just swap the ram for 800 and rerun benches @ same timing and Clocks ,,youll see that:yepp:
yea i am running the 2.1v dominators but they require 2.2v to run 1066 at stock timings. and they are the 2.1v version because it says it on the sticker. plus they are impossible to overclock. im gonna get some ocz platinum once i feel the price is right. newegg just jacked the price up another $11 today when i already felt it was too much.Quote:
Originally Posted by gOtVoltage
and wow i never knew that when you run unganged you can actually get better timings. even in super pi you get better results. thats very insightful and will have to be something i try out. :up:
is this when you are running all 4 sticks at 1066? if so do you have errors at 800? and what happens if you swap sticks around? do the same sticks keep getting errors?Quote:
Originally Posted by HondaGuy
I have tracers BL 12864AL 1065. 16FD3 2x1GB kit... Two kits...Surprise the 2 sticks that failed were the ones in the Yellow channel and they were also in the Mem pipe.. the other two are fine, Looks like Im going to RMA those.Quote:
Originally Posted by roofsniper
I have tested both of them at the same time, both running in the yellow slots,once I put in the bad ram, I can not even boot up,I've tested the ram @1066, and also @800 and I dont get any errors on the good sticks..Do you think I should just test them one at a time?
i would test them as much as you can before rmaing them. but thats just me because i hate to rma stuff.Quote:
Originally Posted by HondaGuy