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Phenom Ii Memory Problems

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OK, im building a phenom II system and i read about some type of memory problem.
So my question's are:
What is the problem with the memory controller?
Is like the same problem i had with the 9950 where you have to up the mem v and nb v to get ddr2 1066 to work right?
Does it affect both AM2+ amd AM3?
Any answer's would be great
 
No problem with the IMC on Phenom II if you run 4gb of ddr2/ddr3. However according to the AMD tech docs when running 8gb of ddr2/ddr3 the ram will default to ddr2 800 and ddr3 1333 respectively.
Note that is not always the case as some people have been able to run 8gb at full speed.
 
Yeah makes me wonder i had mushkin and ocz dr2 1066 not work out right(timings were to sloppy and the pc would lock up) with a 9950 and yet G.skill cheap G.skill works just fine i hope that hold's true for the 945 as well
I wonder if it does the same thing...when you have 4 gigs it reads as 1066 when you have 8 gigs it reads as 800 and you just have to go into the bios and raise voltages just a bit, really odd i never heard anything before the phenom II's came out im not sure if it's the same thing but if it is it's an easy fix.I guess i'm gonna find out either way though If i have to 4 gigs aint that bad
 
Don't know if anyone is looking at this but here it goes i got the new cpu (945) and this is how it works, 4 gigs your fine at 1066mhz with 8 gigs your down to 800mhz GRRRRR!!!!! ok so you have to adjust your trfc from 105ns to a nice sloppy 127.5ns and raise some voltages not a problem right?
so i went from 5-5-5-15-25 2t trfc 105ns to 5-6-6-18-32 2t trfc 127.5ns and raised NB+.1 and cpu+.02 mem at 2.1v and it seems to be stable gonna torture it really soon here to see if it holds
ANY suggestions what i could do to get the timings a little tighter with 8 gigs
GIGABYTE MA78GM-SH2P v2.1
8 GIGS G.skill PC-8500
PHENOM 945
4830 512MB
WD BLACK 500GB 32MB
 
Rintrah said:
No problem with the IMC on Phenom II if you run 4gb of ddr2/ddr3. However according to the AMD tech docs when running 8gb of ddr2/ddr3 the ram will default to ddr2 800 and ddr3 1333 respectively.
Note that is not always the case as some people have been able to run 8gb at full speed.
Click to expand...

i ran 8GB up to DDR3 1800 no issues, on a phenom II 955BE
 
I'm Not Sure Are Those With The 790 Even Having This Issue,i Remember Something About Better Memory Connections Nb-cpu
Anyways It Still Smokes My Old Setup I Am Happy With This Cpu!!!!!!!!!!
This Is The Chip I Thought The Original Phenom Was Going To Be,finally Have An Amd Chip That Beats A Good Intel Setup Well At Least The Q9450
One Thing That Still Kinda Bothers Me Though.....
Phenom 955be $245 790 $150+ =at Least $395....dual Channel Ddr3
I7 920 $260 X58 $200= At Least $460....triple Channel Ddr3
$65 Difference In Price Does Not= Performance..... I Mean For $65 Why Not Go For The I7,i Got The 945 For $200 With A Promo Coupon And That's Worth The Price I Hope Amd Understands That!! The 955be Should Be $220 At The Most!!!!
Anywho Amd Was About 2 Years Behind Intel Now I Say They Are About 9 Months I Hope Intel Gets Hung Up So We Can See Even Better Prices Yay Competition Rocks
 
jmcslob said:
I'm Not Sure Are Those With The 790 Even Having This Issue,i Remember Something About Better Memory Connections Nb-cpu
Anyways It Still Smokes My Old Setup I Am Happy With This Cpu!!!!!!!!!!
This Is The Chip I Thought The Original Phenom Was Going To Be,finally Have An Amd Chip That Beats A Good Intel Setup Well At Least The Q9450
One Thing That Still Kinda Bothers Me Though.....
Phenom 955be $245 790 $150+ =at Least $395....dual Channel Ddr3
I7 920 $260 X58 $200= At Least $460....triple Channel Ddr3
$65 Difference In Price Does Not= Performance..... I Mean For $65 Why Not Go For The I7,i Got The 945 For $200 With A Promo Coupon And That's Worth The Price I Hope Amd Understands That!! The 955be Should Be $220 At The Most!!!!
Anywho Amd Was About 2 Years Behind Intel Now I Say They Are About 9 Months I Hope Intel Gets Hung Up So We Can See Even Better Prices Yay Competition Rocks
Click to expand...

this post makes no sense
 
cdawall, like I mentioned it is possible to run 8gb at full speed but not guaranteed.
I also managed to run 8gb DDR2 with my X2 5600 @ 800mhz and @ 1066 with my phenom 720 although AMD documents state otherwise. I guess you need the right combination of Mobo, Ram, and Mobo BIOS to be succesful, but you will see that most people are not able to run 8gb at the rated speed.
 
All In All I Think The Difference In Performance With 8 Gigs Is Still Better For Me At 1066 With Sloppy Timings,over 4gigs And Tight Timings,but I Think Most Would Do Fine With 4 Gigs, The Only Real Difference So Far Is In The Benchmarks And It's Not That Big A Difference,though After Im Sure Im Stable At These Settings I'll Try A Few Voltage Increase's To See If I Can't Get It A Little Tighter Really Just The Trfc Settings I Just Dont See Why I Have To Go From 105ns With 4 Gigs To 127.5 With 8 Gigs,i Just Think I Got To Find The Right Voltage Combination Between The Memory And The Cpu,or I Could Just Give Up Video Editing And Other Large Memory Apps And Be Happy With 4 Gigs Lol!!!
 
jmcslob said:
All In All I Think The Difference In Performance With 8 Gigs Is Still Better For Me At 1066 With Sloppy Timings,over 4gigs And Tight Timings,but I Think Most Would Do Fine With 4 Gigs, The Only Real Difference So Far Is In The Benchmarks And It's Not That Big A Difference,though After Im Sure Im Stable At These Settings I'll Try A Few Voltage Increase's To See If I Can't Get It A Little Tighter Really Just The Trfc Settings I Just Dont See Why I Have To Go From 105ns With 4 Gigs To 127.5 With 8 Gigs,i Just Think I Got To Find The Right Voltage Combination Between The Memory And The Cpu,or I Could Just Give Up Video Editing And Other Large Memory Apps And Be Happy With 4 Gigs Lol!!!
Click to expand...

No offense..., but is something wrong with your fingers? What's with using capital letters on beginning of every word ? And structure of sentences are ... well, let's leave it at that.

Anyway, I've had some troubles with DDR3 RAM with AM3 720BE. I had to slow my ram down to 1033 to stop Windows going BSOD.
 
Rintrah said:
cdawall, like I mentioned it is possible to run 8gb at full speed but not guaranteed.
I also managed to run 8gb DDR2 with my X2 5600 @ 800mhz and @ 1066 with my phenom 720 although AMD documents state otherwise. I guess you need the right combination of Mobo, Ram, and Mobo BIOS to be succesful, but you will see that most people are not able to run 8gb at the rated speed.
Click to expand...

did it on 3 mobos 4 chips and 5 sets of ram.

MSI K9A2 platinum rev1 with a phenom 9500 and 4 sticks of XMS2

Asus Crosshair II, 720BE, 945ES, 955BE and alot of kits of ram

Asus M4A78T-E, 720BE, 955BE and alot of DDR3
 
Wow I Didn't Even Realize I Was Doing That. OMG IM Still Doing It lol!!!
Yeah i was really Hi when i wrote that comment Cdawal
I was trying to say dollar for dollar Intel has AMD spanked,If i was going to buy a cpu and mobo at the same time i would absolutely go for the I7 920 over the 955 for a $65 difference, I think AMD needs to look over their prices a bit, I get that it's a new release price and it will fall. The only reason AMD is getting $245 for the 955 is because of fan base and backwards compatibility. I've heard several people claiming to get better numbers with a 955 overclocked than the I7 920,maybe if the 955 is well overclocked and the I7 920's not. For it's performance level as compared to the I7 920 the 955 should be no more than $220 now! and not in two months when Intel release's the next greatest cpu the I7 32nm with even more l3 cache and such.Also I thought the 790 chipset allowed for greater memory range with a better NB to CPU
 
Plug your new i7 into a 775 board.
 
alucasa said:
No offense..., but is something wrong with your fingers? What's with using capital letters on beginning of every word ? And structure of sentences are ... well, let's leave it at that.

Anyway, I've had some troubles with DDR3 RAM with AM3 720BE. I had to slow my ram down to 1033 to stop Windows going BSOD.
Click to expand...

might have something to do with running a 3x2GB tri channel kit on a dual channel phenom II
 
First sorry brain fart, 790 with sb750 for better memory transfers, and i don't disagree with you I have this AMD system because of Intel's socket change,Because i already knew AMD would be backwards compatible with the AM3,and because it was cheap after all if it's not cheap there is no point in building an AMD system<It's not like AMD is better, just better for performance to dollar.I switch back and forth AMD to Intel and vice versa,However at $245 AMD looses because it's not cheap enough,or good enough at that price when you can get a I7 920 and mobo for $65 more,now Intel wins. And don't think for one minute AMD isn't about to do a socket revision,if they don't they will not be able to stay competitive in a very harsh market,read AMD's plans AM3 into 2010 That's not far away and they are getting close to intel and im sure after the new I7's come out,i think in june(32nm) AMD will have to do something drastic,like a socket revision just to keep up,and that's when the 1366 mobo's will be cheap and so will the I7's and AMD will either have to be better by then,or really cheap,where is where they should be now
 
cdawall said:
might have something to do with running a 3x2GB tri channel kit on a dual channel phenom II
Click to expand...

It was a very weird problem for me. BSOD would occur very occasionally, perhaps once / twice a day. BSOD errors were always RAM related, so at first I assumed that my memory sticks were at fault.

So, I swapped the RAM with RAMs from my i7 rig which were proven to be stable after a month of high usage. Of course, I ran memtest before swapping. All was clear and I swapped the RAMs.

I would still get BSOD, so I tinkered with RAM speed. By default, it was running at 1333. I reduced it to 1066 and haven't had a BSOD for over a week now.

Yes, I do believe it has something to do with using only 3 RAM slots.
 
alucasa said:
It was a very weird problem for me. BSOD would occur very occasionally, perhaps once / twice a day. BSOD errors were always RAM related, so at first I assumed that my memory sticks were at fault.

So, I swapped the RAM with RAMs from my i7 rig which were proven to be stable after a month of high usage. Of course, I ran memtest before swapping. All was clear and I swapped the RAMs.

I would still get BSOD, so I tinkered with RAM speed. By default, it was running at 1333. I reduced it to 1066 and haven't had a BSOD for over a week now.

Yes, I do believe it has something to do with using only 3 RAM slots.
Click to expand...

you missed my sarcasm. phenom II uses dual channel hence 3 sticks of ram can really monkey things up pull out one of the sticks and watch the problem disappear
 
I wasn't going to use two sticks since I needed more than 4gb due to my works, but 8gb was overkill for me, so I went with 3 sticks.

I know that ganged mode requires dual-channel though.
 
alucasa said:
I wasn't going to use two sticks since I needed more than 4gb due to my works, but 8gb was overkill for me, so I went with 3 sticks.

I know that ganged mode requires dual-channel though.
Click to expand...

3 sticks will not work right on a phenom II
 
I can get 8 gigs to work it's just sloppy,I still think this is a great cpu, I just don't get why it's a problem, with AMD's IMC right? why doesn't just a little extra voltage take care of it? Or is it a architecture flaw? why does it not happen with 2 sticks?
 
jmcslob said:
First sorry brain fart, 790 with sb750 for better memory transfers, and i don't disagree with you I have this AMD system because of Intel's socket change,Because i already knew AMD would be backwards compatible with the AM3,and because it was cheap after all if it's not cheap there is no point in building an AMD system<It's not like AMD is better, just better for performance to dollar.I switch back and forth AMD to Intel and vice versa,However at $245 AMD looses because it's not cheap enough,or good enough at that price when you can get a I7 920 and mobo for $65 more,now Intel wins. And don't think for one minute AMD isn't about to do a socket revision,if they don't they will not be able to stay competitive in a very harsh market,read AMD's plans AM3 into 2010 That's not far away and they are getting close to intel and im sure after the new I7's come out,i think in june(32nm) AMD will have to do something drastic,like a socket revision just to keep up,and that's when the 1366 mobo's will be cheap and so will the I7's and AMD will either have to be better by then,or really cheap,where is where they should be now
Click to expand...

I skimmed through. It's a little hard to read.

Anyway, yes, AMD's top of line processor is not that cheap and AMD's top of line motherboard isn't that cheap, either, but you will save some, as in over a hundred dollars, in overall cost if you go for AMD setup now.

I also have a core i7 920 running, and I know from experience that it is currently overkill for average joes, but I must say the processing power of i7 is amazing - if you can make a good use of it. -

cdawall said:
not correctly you just said you had to downclock it for it to be stable.
Click to expand...

I don't consider requiring a little taming running incorrectly, but I suppose I agree with your point.
 
alucasa said:
I don't consider requiring a little taming running incorrectly, but I suppose I agree with your point.
Click to expand...

the stuff is rated for 1333 so it had better run 1333 for me
 
Just don't try feeding them with like 3 volts like cdawall. :D
 
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