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Discussion Starter · #1 ·
OK now I have a question I ran X264 5.01 on my PC and it BSOD on the 2nd pass at about 10%. so what does this mean my sytem is NOT stable?? I passed Prime 95 with a 8 hour run??

I use an Ivy Bridge @ 4.5ghz at 1.25v under load.. I am not sure what to make of Aida 5.01 64??
 

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Which version of Prime95 do you have?

What test did you use in Prime95?

8 hours means that you only got through the first 8 hours worth of FFTs, however many that amounts to actually being. I know that it's 15 minutes per FFT, but it's not precisely that. So, 30 minutes doesn't mean 2 FFTs. It takes a little longer than 35 to finish two. So, 8 hours is maybe the first 20-25 FFTs, and there are a total of 82.
 

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Discussion Starter · #3 ·
Well I only mentioned P95 as an example of one of the more stressfult tests I passed.. I am trying to find out why X264 v5.01 BSOD after 10% complete on Aida64 5.01..

But Here is what I ran on P95:

1. Prime 95 v27.9 Build 1
2. MAX FFT Size (in K) 1792
3. Memory to use 8192mb
4. Titme to run each FFT Size 5 minutes..

I made a mistake the Program I am using is X264 v5.01 the Video Encoder Program NOT Aida 64..
 

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Quote:
Originally Posted by The_Nephilim View Post

Well I only mentioned P95 as an example of one of the more stressfult tests I passed.. I am trying to find out why X264 v5.01 BSOD after 10% complete on Aida64 5.01..

But Here is what I ran on P95:

1. Prime 95 v27.9 Build 1
2. MAX FFT Size (in K) 1792
3. Memory to use 8192mb
4. Titme to run each FFT Size 5 minutes..

I made a mistake the Program I am using is X264 v5.01 the Video Encoder Program NOT Aida 64..
#2 is the problem. You can't just run the 1792K FFT, or limit Prime95 to the 1792K FFT instead of the default of 4096. It's far better to run the default Blend test, or better yet, the Custom Blend test (select Custom while Blend is selected). Then, just enter about 80-85% of your installed memory instead of 50%. That would be precisely 13107 - 19275 MB. Or, 13000 - 19000 if you want to round it just for the heck of it. If you want to use 85% or higher, then, I recommend doing so on a fresh boot with the "Windows Classic" theme selected before rebooting and only 1 solid color wallpaper (no Desktop Slide Show) and with the least amount of programs running at startup (so, all unnecessary programs disabled or told to not start with Windows, or deleted from the Startup start menu folder, etc. etc. etc.). I would recommend doing this anyway because it's a superior way to do it, but it becomes especially important the more and more memory you tell Prime95 to use, especially above about 85%.

It's best to leave the setting alone that says "Time to run each FFT size" because 15 minutes is far better than just 5. There's no real good need to shorten this time. I mean, there really aren't any valid shortcuts in stress testing.

So, the goal is to try to get your system so stable that it can run this test for 24 hours. Why 24? Because there are 82 FFTs in total and it takes about 24 hours to get through all of them. I know, 82 x 15 is 1,230 minutes which is 20.5 hours, but you will notice that it takes longer than 15 minutes to do each FFT size and it adds up to being roughly 24 hours to get through all 82 of them one time each. I don't know why, but that's just the way it is.

So, some people reading this might ask me, "well, why the Blend test? Look at what it says about the Large FFTs or the Small FFTs" The answer is, for these CPUs like Sandy Bridge, Ivy Bridge, etc., we need something that will stress both the IMC and the CPU cores at the same time (the IMC is the Integrated Memory Controller). So, reader, if you have an older generation CPU like say a Core2, then use the Small FFTs test because that CPU generation doesn't have an IMC and therefore the Blend test is less stressful for your CPU. I'm not 100% sure, but I think that the first generation Core i Series has an IMC (that would be CPUs like the i7-920 and other 3-digit i3/i5/i7 models like it), but don't quote me on that. Ok? :)

Anyway The_Nephilim, let me know how this goes!
 
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Discussion Starter · #5 ·
Hi TwoCables,

While I very much appreciate your Input and help but you have missed my OP completely.. I am NOT having any problems running Prime 95..

I am trying to use x264 v5.01 the Video encoder software.. It has a built in stress test that has real world stress levels.. I run the first test fine it is when it gets to the 2nd test after 10% complete I BSOD..

So Please FORGET about Prime 95 that is Fine.. I need help with why x264 is BSOD on me??
 

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Because your system is not stable. That's why I'm recommending that you go back to Prime95. Trust me. ;)
 

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Which CPU is this? i5 3570K? i7 3770K? Prime 95 for 5 minutes is not enough at all. 1 Hour / 6 hours + would be better. I would keep temperatures under 85°C if I was you.
 

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Discussion Starter · #8 ·
he it is the i5 3570K and I ran Prome 95 for 8 hours.. if 6 is good then 8 is better.. but I will try and run it for 24 hours tonight..
 

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I sincerely recommend referring to my post on Prime95 above and doing as much of what I said as you can.
 

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Discussion Starter · #11 ·
OK I think I narrowed down my troubles.. It seems when I run 4 sticks of RAM I get a lot of Freezes.. I just took out 2 sticks and ran IBT on High and it passed when before it would freeze..

I think the system is unstable because of the 4 sticks of ram?? I am going to try and run memtest again which I did the other week and it passed fine.. I am unsure what is going on here..

But perhaps the system is unstable with 4 sticks of RAM??
 

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Quote:
Originally Posted by The_Nephilim View Post

But perhaps the system is unstable with 4 sticks of RAM??
All the sticks are the same?
 

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Quote:
Originally Posted by The_Nephilim View Post

OK I think I narrowed down my troubles.. It seems when I run 4 sticks of RAM I get a lot of Freezes.. I just took out 2 sticks and ran IBT on High and it passed when before it would freeze..

I think the system is unstable because of the 4 sticks of ram?? I am going to try and run memtest again which I did the other week and it passed fine.. I am unsure what is going on here..

But perhaps the system is unstable with 4 sticks of RAM??
It could be that some voltage needs to be adjusted, but what voltage, I don't know.
 

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Discussion Starter · #14 ·
yes the memory is identical..

I tried bumping up the CPU volts that didn't seem to help.. I don't think I would want to up the voltage on the ram??
 

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Quote:
Originally Posted by The_Nephilim View Post

yes the memory is identical..

I tried bumping up the CPU volts that didn't seem to help.. I don't think I would want to up the voltage on the ram??
For example: I had to increase the VCCIO voltage. You don't have that in your BIOS, but it's the voltage for the IMC. It could be in your BIOS under a completely different name for all I know. I'm not saying that this is it, but the CPU core voltage is definitely not one that you would have to increase. Now, I guess that you can try to increase the memory voltage or maybe some others, but what if you could just wait for some good suggestions and do a lot less work? :)
 

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Discussion Starter · #16 ·
Well I tuned it down and took out the other 2 sticks of ram and now I ran IBT at Very High for 15mins and passed..

I am clocked to 4.3ghz @ 1.210vcore under load.. seems I can go look at the Ivy Bridge guide again and see what else I can adjust..
 

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This is because 4 ram sticks put more strain on the CPU. Having two ram stocks will put less strain on the CPU (IMC, INTEGRATED MEMORY CONTROLLER). That's why you'll find it more stable with dual team sticks on dual channel.

I'm glad I changed 4x4 16 gb to 8x2 16gb, I may attempt 4.7 GHz again.
 

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Discussion Starter · #18 ·
Yes I have read that before looks like I will need to sell these sticks and get 2 8gb sticks for a total of 2 ram sticks @ 16gb..

I also got it stale at 4.3ghz currently.. I was able to complete a run on the x264 program.. I will have to tinker with this tomorrow off to a gaming session know..
 

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Man..... I would say, just ask in a new thread if there is a voltage or something that can be adjusted to make 4 sticks work. It could save you some money.
 

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Discussion Starter · #20 ·
Yes I am in the process of looking into it and I will make a new thread perhaps in the motherboard or memory section thnx
wink.gif
 
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