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  1. #46
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    Thumbs up Re: CPU burn in, myth or reality?

    What he said.
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  2. #47
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    Re: CPU burn in, myth or reality?

    Quote Originally Posted by benefit14snake
    I would imagine, if its a myth with CPU, it would hold true for othercomponents as well. Although... I might try to burn in my new mouse a bit later!!! Make sure to burn in that new monitor too, leaving it on for 6 months straight will result in BETTER performance!!
    I left mine on for a year straight, and now the picture is brighter, my dead pixels came back, and the ghosting completly went away!

    (hehe not trying to make fun of ya bud, I just think the whole burn in thing is kind of funny.)


    Anyways - Im going to go see if I can send to mythbusters. But on a side note, i was thinking of making a overclocking MYTH guide, since theres alot of overclocking guides that tell you HOW to do it, I want to make one that shows how NOT to do it. Obviously I couldnt do it alone, so id need some help - maybe Ill make a short list and let people add from there, and then we can see which ones we want to include on the first pages, which would be like the results page. Some of the things I wanted to do would include like: CPU burn in, running AMD "1:1" (skt 754 and above), memory timmings VS frequency (amd), amd and 1/2 multis and the big one: Overclocking will MELT your proccessor. That is one I personaly hate, when ever I mention overclocking at my school, i get some person (who barley knows how to browse the internet) say "overclocking is stupid, you will burn out your computer!"
    im just asking becuase i can't figure out what i did that made my overclock stable...after a couple weeks testing/gaming, it became stable. but then again, i probably changed something and dont remember it, i guess .

  3. #48
    Joined
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    Re: CPU burn in, myth or reality?

    Quote Originally Posted by Antonik
    You're not really burning in the CPU, but the adhesive, and only if its a paste/liquid, like the AS5 or Ceramique, since the "burn it" allows the adhesive to fill the voids and have a better connection between the heatsink and CPU.
    Yes, this part I understand, and completly aggree with. We all know AS5 does this, but ceramique does NOT burn in. Go look at Artcticsilver.com, it will explain why there is such a burn in period.


    The burn in I am refering to, is the burning in of the ACTUAL cpu itself. On such guides as the one prepared by Mr Sean Kon, he refers to the CPU being like a spring, you have to stretch it to permanitly deform it (sounds like something you want to do to that new $500 CPU eh?) and by deforming it, it allows it to run on lower voltage.

    Now theres 2 kind of burn in's I accept, and will not dispute that they are 100% real. These being: 1) CPU burn in done at the manufacture to ensure useability. 2) CPU burn in done by the end user (usualy through natrual useage of the machine) to fill in the voids in the heatsink as well as the IHS on the proccessor.

    Those 2 are real, and any one who uses arctic silver 5 does it. As for the manufacture one, im not sure if they still do that or not.
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  4. #49
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    Re: CPU burn in, myth or reality?

    Quote Originally Posted by chucko
    im just asking becuase i can't figure out what i did that made my overclock stable...after a couple weeks testing/gaming, it became stable. but then again, i probably changed something and dont remember it, i guess .
    As for you situation, there are alot of things that could be the cause. Did you use arctic silver 5? Was there a temperature fluxuation in your house, by more that like 1-2c? Did you add or remove any of your components? Did you plug your power cord into another outlet? I mean, I could go on for hours with the miniscule (sp) possibilities that could have changed your stability. Now if you said "My proccessor was stable at 2.4ghz @ 1.55V now after running for 2 weeks on prime 95, its stable at THREE GIGAHERTZ @ 1.55V!" It would make me think.. ok maybe there is some true to this whole CPU burn in thing.
    EVGA 790i Ultra
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  5. #50
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    Re: CPU burn in, myth or reality?

    One thing that I must say also is: I havent given any proof that this ISNT in fact true. But im working on that now, I just got my new proccessor (btw i need to update my sig ^-^) and my new motherboard / vid card / case.....so my computer isnt up and running yet, like always computers hate me and refuse to boot on the first try hehe. But once im up and running, i will do some testing of my own, and post the results promptly.
    EVGA 790i Ultra
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    ATI 4870x2
    OCZ 2x2gb @ DDR1600 7-6-6-21 @ 1.9v
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    Custom Waterloop on CPU and Video
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  6. #51
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    Re: CPU burn in, myth or reality?

    I havent given any proof that this ISNT in fact true. But im working on that now

    Well, if you can prove a negative, my hat's off to you.

    Benefit, relax, enjoy setting up your new system, and post back with the results.

    marty
    Gigabyte P55A-UD4P, Core i7-860 Lynnfield at 3.6GHz, ZALMAN CNPS10X QUIET 120mmCPU HSF, CORSAIR Vengeance (2 x 4GB) DDR3 at 1640, PowerColor HD5870, Earthworks 650W PSU, Samsung 840 EVO 120g SSD (W10 Pro 64-bit), 320G Blue Caviar storage, LiteOn DVD burner, Antec 902 case [B]
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  7. #52
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    Re: CPU burn in, myth or reality?

    Haha! only if I could marty.. but life hates me, and my system wont boot lol. I think my proc might be DOA but im not 100% sure yet. I know my ram works, I know the mother board and power supply works. Im not sure if the vidcard works - but I put in a PCI card which i know works, and it didnt display anything. So that leaves the proc, or possibility that the ram is configured wrong hehe. I gotta look into it a bit more. I sure hope its not DoA lol.
    EVGA 790i Ultra
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  8. #53
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    Re: CPU burn in, myth or reality?

    Quote Originally Posted by benefit14snake
    As for you situation, there are alot of things that could be the cause. Did you use arctic silver 5? Was there a temperature fluxuation in your house, by more that like 1-2c? Did you add or remove any of your components? Did you plug your power cord into another outlet? I mean, I could go on for hours with the miniscule (sp) possibilities that could have changed your stability. Now if you said "My proccessor was stable at 2.4ghz @ 1.55V now after running for 2 weeks on prime 95, its stable at THREE GIGAHERTZ @ 1.55V!" It would make me think.. ok maybe there is some true to this whole CPU burn in thing.

    well i wasn't going to take over the thread...

    but no, i never really changed anything. its a long story... i had a video card that was not compatible with my set up. i spent a lot of time benchmarking and both set ups, old and new video cards ((2 x800xls (ran like crap) and 1 7800gt (runs great), ug)) were all running with my system stable at 9 x 292 1.58v.

    at the VERY beginning (ALL new parts) temps never really changed with a xp-120 and sunon 120 (idle 31ish and 40ish load). crash out of prime with in a few minutes, now im stable 12+ hours, plus other BMs (edit*) are now stable, but i can't remember which were and which wern't sorry. not sure what i did. the only thing i could guess is the ram timings. thats why i say im not sure.

    we dont need to go into this, just wanted to know about other stuff like mobo and ram...and NO i didint' mean mouse the monitor haha, funny...

    thanks.
    Last edited by chucko; 12-26-2005 at 12:12 AM.

  9. #54
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    Re: CPU burn in, myth or reality?

    You are by no means taking over the thread bud, Im trying to get to the bottom of this. But one reason which I could see your overclock changing would be going from the 2x800XL's to one 7800GT. As you could imagine, 2x Any SLI compatible video card would most likley use a considerable ammount more power than 1x7800GT, especialy since the 7800 series takes LESS power than the 6800 series. So, one possibility is this: the 2 video cards were putting a considerable load on your PSU, and by eliminating one card, that puts less strain on the PSU allowing it to give cleaner power. Could this be why? I suppose there is a possibility, but this is kind of going out on a limb.

    Im not really sure, but once I get my system up and running, I will do some decently controlled tests to test this thereoy (I say decently, because I AM running this in my room hehe, so somethings still could change like temp and humidity and what not.)
    EVGA 790i Ultra
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    ATI 4870x2
    OCZ 2x2gb @ DDR1600 7-6-6-21 @ 1.9v
    OCZ Game Xstream 700w
    4x80gb WD Sata2 in Raid 0
    40" Samsung 4071 @ 1080p
    Custom Waterloop on CPU and Video
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  10. #55
    Joined
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    555

    Re: CPU burn in, myth or reality?

    Quote Originally Posted by benefit14snake
    You are by no means taking over the thread bud, Im trying to get to the bottom of this. But one reason which I could see your overclock changing would be going from the 2x800XL's to one 7800GT. As you could imagine, 2x Any SLI compatible video card would most likley use a considerable ammount more power than 1x7800GT, especialy since the 7800 series takes LESS power than the 6800 series. So, one possibility is this: the 2 video cards were putting a considerable load on your PSU, and by eliminating one card, that puts less strain on the PSU allowing it to give cleaner power. Could this be why? I suppose there is a possibility, but this is kind of going out on a limb.

    Im not really sure, but once I get my system up and running, I will do some decently controlled tests to test this thereoy (I say decently, because I AM running this in my room hehe, so somethings still could change like temp and humidity and what not.)

    ah! this is why didn't want to get into it! np, i already screwed that up. i had two different x800xls that were both faulty for some weird compatibility reason with my mobo (there was no SLI set up involved here at all, had a bad x800xl then RMA'd for another bad bad x800xl, see long story :P )...and to solve that i got a nvidia type card to solve my compatibility issue. sorry about that!
    Last edited by chucko; 12-26-2005 at 01:11 AM.

  11. #56
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    Re: CPU burn in, myth or reality?

    Ahh I see hehe.

    EDIT: lol what was I thinking anyways, you cant have 2x800XL's in SLI! DUH on me lol
    EVGA 790i Ultra
    Intel 9550 @ 3.922ghz 1.2125v
    ATI 4870x2
    OCZ 2x2gb @ DDR1600 7-6-6-21 @ 1.9v
    OCZ Game Xstream 700w
    4x80gb WD Sata2 in Raid 0
    40" Samsung 4071 @ 1080p
    Custom Waterloop on CPU and Video
    Thermaltake Tsunami case (Black)
    7 Ultimate 64-bit

  12. #57
    Joined
    May 2004
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    548

    Re: CPU burn in, myth or reality?

    what program to use and how ?
    DFI NFI4 ULTRA-D // OPTY 146 CABYE 0540
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  13. #58
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    Re: CPU burn in, myth or reality?

    RESULTS!

    Here are my results after one day of CPU Burning in.

    Testbed

    Motherboad: Asus A8N SLI-DELUXE
    BIOS version: 1016 Final

    Proccessor: AMD Opteron 165
    Rated Speed: 1.8ghz x 2 with 1MB cache per core
    Rated Voltage: 1.35V
    Stepping: CCBWE 0534 MPMW

    Display Adapter:BFG 7800GTX 256mb OC @ 550mhz core / 1350mhz memory PCI-E

    Powersupply: Thermaltake 420W PSU <EDIT: Recieved OCZ Powerstream 520W>

    Harddrives: Western Digital 160GB PATA 100mbit/s HD
    Samsung Spinpoint 120GB SATA 150mbit/s HD

    Optical Drives: Lite On DVD BURNER x16 PATA 66mbit/s

    Fans: 2x120MM fans + 3x80MM fan (2/3 in PSU)

    After about an hour of testing to find the lowest bootable voltage at 1.8ghz, I found 1.0625v to be 100% stable, and anything below 100% unstable. So I primed all night (9 hours 42 minutes each core). I tried to boot this morning at 1.050V, still no go.

    UPDATE: My OCZ powerstream 520W w/ adjustable rails came today. I put that in, and still no luck with booting at 1.050V.
    Last edited by benefit14snake; 12-30-2005 at 10:28 PM.
    EVGA 790i Ultra
    Intel 9550 @ 3.922ghz 1.2125v
    ATI 4870x2
    OCZ 2x2gb @ DDR1600 7-6-6-21 @ 1.9v
    OCZ Game Xstream 700w
    4x80gb WD Sata2 in Raid 0
    40" Samsung 4071 @ 1080p
    Custom Waterloop on CPU and Video
    Thermaltake Tsunami case (Black)
    7 Ultimate 64-bit

  14. #59
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    Re: CPU burn in, myth or reality?

    Results Part2!


    My harddrive corrupted somehow (or got a virus) but either way, it would BSOD when I entered windows (or sometimes it would give me 5-10secs then BSOD) and it wasnt caused by memory either. I ended up having to reformat the drive as just plain reinstalling windows failed to resolve the problem either. After I finaly got it working again, I had about 15 minutes untill work, so I downloaded prime95, set the affinity to each core then rebooted at 1.0625V. Since I didn't see any results last time from burning in the CPU, I decided to kick it up a notch. I got my proc stable at 1.9ghz @ 1.0625V, by stable, i mean it booted into windows and passed prime for about 4 minutes hehe. Well I come home 8 hours and 43 minutes later to find that one core had failed within 11 minutes and the other was still running prime - which I kind of figured would happen since I didnt get to test thoroughly.
    So im not even going to test weather it is stable at 1.8ghz @ 1.05v yet, as the second core didnt get a proper burn in today. I will continue to burn in again tonight when/if I sleep.


    Side Note: CPU-Z reads the CPU voltage as 1.04v then it fluctuates to 1.072v which you see in the picture. The bios reads the voltage as 1.064V which is still a bit off of what I selected in the bios, but I think the bios is a bit more accurate.
    Last edited by benefit14snake; 12-30-2005 at 10:29 PM.
    EVGA 790i Ultra
    Intel 9550 @ 3.922ghz 1.2125v
    ATI 4870x2
    OCZ 2x2gb @ DDR1600 7-6-6-21 @ 1.9v
    OCZ Game Xstream 700w
    4x80gb WD Sata2 in Raid 0
    40" Samsung 4071 @ 1080p
    Custom Waterloop on CPU and Video
    Thermaltake Tsunami case (Black)
    7 Ultimate 64-bit

  15. #60
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    Re: CPU burn in, myth or reality?

    Results Part 3


    Last night, erm this morning at 7:30ish AM I put prime on and went to sleep. It was priming at 1854mhz @ 1.0625v (according to bios). When I woke up, I found prime was still runnning both cores, which is a good thing So I began to test around with the clocks. With my motherboard I am limited to 1.536V, according to bios and CPU-Z, but I managed rock stable at like 2724mhz on one core, and over 2800mhz with the other core. Reason I dont give an exact number for the other core, is well.. it doesnt really matter; if the other core isnt stable, and I only tested stability over the 2724mhz mark with the strong core running prime, and the weak one idle, while I adjusted clock gen at the same time. It rebooted (but never stopped primming) at like a little over 2850mhz, but like I said its irrelavent. Well, i was rock stable at 2724mhz last night, so this is no surprise. What is cool though is, I can set the bios for 1.05V and im stable now! YAY! so do I chalk it up to burning in, or do I say its the arctic silver 5 burning in? Ill do some more testing!


    EDIT: HAH! I knew somethign smelled fishy here. It was priming fine at 1.05V, but then I reset the PC to change the voltage lower, and it wouldnt even boot at 1.05V, so maybe it was just a fluke that I was stable at 1.05V, will do some mroe testing to confirm.
    Last edited by benefit14snake; 12-31-2005 at 04:38 PM.
    EVGA 790i Ultra
    Intel 9550 @ 3.922ghz 1.2125v
    ATI 4870x2
    OCZ 2x2gb @ DDR1600 7-6-6-21 @ 1.9v
    OCZ Game Xstream 700w
    4x80gb WD Sata2 in Raid 0
    40" Samsung 4071 @ 1080p
    Custom Waterloop on CPU and Video
    Thermaltake Tsunami case (Black)
    7 Ultimate 64-bit

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