Using a mix of pc3 12800 and pc3 10666

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tirasong

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Mar 15, 2012
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Can I use a mix of pc3 12800 (G.SKILL 2x4G 9-9-9-24-2N) and pc3 10666 (OCZ 2x1G 9-9-9-26) on the same motherboard? My motherboard: Gigabyte GA-880GA-UD3H. CPU: AMD Phenom II 560 unlocked to B60. OS: Windows 7 x64 Ultimate.

Please advise.

Willie
 
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HostileDonut
You "can", but it may cause major instability. It is good to have the same manufacturer and revision, but if you set them both down to the lowest settings, for example, 1333, 9-9-9-24, 1.5v or whatever the slowest is specced for, they should run fine. I wouldn't run a pair with 1600 and another iwth 1333 though.
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Okay, sounds good if the RAM is stable and the CPU seems to be stable with it. :)

The NB should not be raised to much higher than what it is. So maybe x1 more to give you a 200Mhz speed increase. I would leave it at that.

Well, your CPU has to be hotter than 55C if your ambient temp is higher than that. Your CPU's lowest temp can only be as low as the ambient temp if that makes sense.

Where do you live? 10:00AM over there may be different from 10:00AM where I live.

With a Vcore of 1.3v and still going strong without any crashes is a pretty good sign. Have you disabled those 2 cores or are you achieving this with all 4 cores? If all four, you have a pretty decent performance boost out of a dual core CPU.
 
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I will try the NB at x1 when I got a chance. I see what you are saying but AIDA64 Extreme Edition shows CPU max temp of 55c, what can I said! In warmer weather the CPU temp should be hotter, hope it'll still be below 60c?
I live in Southern California; where do you live? What's your nick name? Can I call you sometime? I know that you are just a kid but know a lot more about computer than I do and hope I can call you for helps. Care to share phone number or Skype ID?
I run Prime95 with all 4 cores at 3.6Ghz for about 4 hours now; probably let it run for another 4 hours till about 6:00pm.
If no crashes with Prime95. I still can get crashes during normal heavy multi-tasking videos conversions, surfing, playing movies, word processings, etc. Right? :sweat: :lol:
 
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Sorry to misled you...I am not thinking clearly. The room temperature I gave should be about 58F to 60F.
58 degree Fahrenheit = 14.4444444 degree Celsius
So, the CPU temp being 55c to 56c is way hotter than 15c room temp.
 
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Here's the Prime95 Stress Test result:

[Mar 18 18:00] Self-test 576K passed!
[Mar 18 18:00] Test 1, 560000 Lucas-Lehmer iterations of M212991 using AMD K10 type-0 FFT length 10K, Pass1=40, Pass2=256.
[Mar 18 18:01] Test 2, 560000 Lucas-Lehmer iterations of M210415 using AMD K10 type-0 FFT length 10K, Pass1=40, Pass2=256.
[Mar 18 18:02] Torture Test completed 365 tests in 8 hours, 8 minutes - 0 errors, 0 warnings.
[Mar 18 18:02] Worker stopped.
 
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No problem, I still can ask you for helps here. 😉

Interestingly enough, there's quite a few versions of Prime95 out there; v25's for 32bits/64bits (older versions) and v27.4.1.0 (p64v274 - always crashes when I ran this one) (p95v274 - always ran over 8+ hrs successfully when I ran this one). Any comments on these? :sweat:

Again, my OS is Windows 7 x64 Ultimate and I ran successfully with the newer version: v27.4.1.0 p95v274.

Should I assume that 4 cores at x18 3.6Ghz and Vcore 1.3v and NB +x1 and auto ram speed at 1333Mhz with peak temperature around 55c to 57c is stable enough and keep this Bios settings? :sweat: :lol:

Or should I try running with manual ram speed of 1600Mhz to see if p95v274 holds? :??:

Any other suggestions? :wahoo:
 
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If you have got it stable with one version, there might just be a bug in the other, causing it to fail. They have 32-bit and 64-bit versions just for the different OS you might have, but you have a 64-bit, so that is why you have the 64-bit version.

If you ran the test with 1333Mhz, it will still most likely run with 1600Mhz, so just change it to 1600Mhz and don't run the test. If you get a crash, then it is most likely RAM related, so just change the RAM speed back to 1333Mhz.

The reason I say just make your RAM speed 1600Mhz and don't run the test is because running your CPU @ 100% for 8 hours with an OC isn't "good" for the CPU, so if the RAM seems to be stable @ 1600Mhz for everything you do, there is not reason to run the test again. I am guessing that 1600Mhz will be perfectly stable for your system, just 1333Mhz is a good testing point just to see what your CPU can do instead of the RAM interfering.

Get what I mean?
 
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Yes! That is pretty good! :) Just try running 1600Mhz RAM WITHOUT A TEST and see if it is stable.
 
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Running at 1600Mhz RAM with idle temp of 30c-35c and stable... :wahoo:
Full load temp will probably be around mid 50c's.
In summer the full load temp will probably be around mid 60c's.
Would these temperatures be acceptable for keep's sake? Not too high?
Would you please explain the functions and tuneups for the NB or should I just leave it alone? :pt1cable: :lol:
Thanks again for your helps. :)
 
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Your CPU should not go past 70C, so if you are under 70C, you should be fine. Most of the time, you won't be running your CPU 100% I am guessing, meaning temps will be even lower. :)

I believe the North Bridge has something to do with how the motherboard transfers data, but I am not sure. I would leave it alone.
 
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I have found this article: Northbridge Overclocking with the Phenom II
Link: http://www.overclockers.com/the-importance-of-northbridge-overclocking-with-the-phenom-ii/
Tell me what you think of this article...should I try it? :)
Now, what about Southbridge? That's another story to research unless you can tell something. :)
 
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Well, you already have your CPU stable and I don't think that you will really notice a difference with a higher NB. Also, your motherboard isn't meant for OCing really, so I wouldn't push it too far unless you want to risk breaking it.

I don't know much at all about the south bridge. Really, I know nothing except I have heard just not to ever touch it. :lol:
 
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At 3.6Ghz I set NB to 2600Mhz and it crashed. So, I set NB to 2400Mhz at Manual/Normal voltage and was stable so far. :sweat: I will keep this settings for normal usage to see if it will crash again! :sweat:
Until next time, my young friend...actually, you are younger than my youngest son; his is 16 1/2 years old; he like to play CombatArms, Call of Duty, ect. but not interested in how computers work, how to tweak them, and how to install OS's. :lol:
On the plus side...he is a straight A's student...he is in 10th grade going to 11 grade this year. :)
Sure hope he's more interested in computer. I cannot teach him something if he's not into it. :pt1cable:
Appreciates your helps. :)
 
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So far so good with 4 cores at 3.6Ghz at 1.3v Vcore and NB at 2400Mhz...CPU temp at 57c-58c under Prime95 torture stress test. :sweat:
CPU temp should get hotter in Summer; in Summer, maybe I should run at stock of 3.3Ghz or at 3.4Ghz for safety? :sweat:

Now, back to my original question about mixing Rams...
If I want to use a mix of pc3 12800 (G.SKILL 2x2G 9-9-9-24-2N 1.5v) and pc3 10666 (OCZ 2x1G 9-9-9-26 1.7v) on the same motherboard...You suggested that I can run them both @ 1333Mhz 9-9-9-26 timings.
Which Ram Voltage should I set for both Rams? 1.5v or 1.7v or other voltage? Please clarify. :)
 
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You can go to 70C on that CPU, and most things won't do what Prime 95 does, so 3.6Ghz should be fine all the time. Just monitor the temps at first on a hot day to make sure it is okay, but I bet it will be!

That's why i don't like mixing RAM! See, each should be fine at the timings, but 1.7v is high for one set, and good for the other! I would try them both @ 1333Mhz, 9-9-9-26, 1.5v. If that doesn't work, try it up to 1.62v. If that doesn't work, loosen the timings. Maybe 10-10-10-30.
 
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Thanks for your suggestions...I think 4Gb (2x2Gb) of G.SKILL 9-9-9-24-2N 1.5v is good enough for whatever I am doing. Thus, I am not going to mess around with the RAMs on my motherboard any further. It will be a real bitch to unhook the massive Gemini II heatsink (with 2x120mm fans) from the CPU and motherboard to get to the Ram's slots anyway. It will be like rebuilding the PC from scratch again...Too much work for little old me...LOL555 :lol:
Just have to keep the 2Gb (2x1Gb) of OCZ 1.7v RAMs for another build if it ever happened. :)
 
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Sounds like a plan!

Glad I could help! :)
 
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With my current OC'ed 3.6Ghz unlocked 4 cores settings. It is still not a good idea to run 2 cpu-intensive video conversion jobs simultaneously; namely, Divx Video conversion and AVS Video conversion. Since it will bring the processing to a crawl. Maybe more cores will work better? More cores uses more power and produces more heat?

Any comments or suggestions, my young friend! :sweat: :lol:
 
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With my current OC'ed 3.6Ghz unlocked 4 cores settings. It is still not a good idea to run 2 cpu-intensive video conversion jobs simultaneously; namely, Divx Video conversion and AVS Video conversion. Since it will bring the processing to a crawl. Maybe more cores will work better? More cores uses more power and produces more heat?

Any comments or suggestions, my young friend!
 
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Hi, this is little old me again...I use the wrong User ID: oldthaiguy...for these messages:

"With my current OC'ed 3.6Ghz unlocked 4 cores settings. It is still not a good idea to run 2 cpu-intensive video conversion jobs simultaneously; namely, Divx Video conversion and AVS Video conversion. Since it will bring the processing to a crawl. Maybe more cores will work better? More cores uses more power and produces more heat?
Any comments or suggestions, my young friend!"

My point is normally a single core CPU will handle Video conversion job but only taking a little longer.
How come when running multiple Video conversion jobs with multiple cores CPU it brings the processing to a crawl?
Seem like it does not allocate a job to each core to make it run each job independently...maybe each core just don't have enough horse power to do serious conversion on its own? Granted, some Video conversion software uses more CPU than the other and Divx Video conversion and AVS Video conversion uses a lot of horse power.

So, the question is which is better? Faster CPUs with HT or multiple cores CPUs with HT?
 
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Well, you have an AMD CPU, so you have no hyper-threading. It may just be too much for two cores to handle. That would be my guess. I would just turn on all four cores and then you should have enough. :)
 
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