Massman Posted February 8, 2012 Author Share Posted February 8, 2012 Yah, tried them on - R4E 1004 bios - R4E 1101 bios - Xpower2 1.2b1 bios This particular chip is rebooting all the way upto 57x, stops rebooting at 5843 or so. But no way in hell it'll load OS over 5250MHz. Other chips are behaving similarly (booting all over the place). Quote Link to comment Share on other sites More sharing options...
sember Posted February 8, 2012 Share Posted February 8, 2012 I suppose that it doesnt matter what multiplier it boots or tryes to boot, seems like only thing that matters is what multi it can go to windows and then hope that it will scale up lilbit with cold Quote Link to comment Share on other sites More sharing options...
Asmola Posted February 8, 2012 Share Posted February 8, 2012 Yah, tried them on - R4E 1004 bios - R4E 1101 bios - Xpower2 1.2b1 bios This particular chip is rebooting all the way upto 57x, stops rebooting at 5843 or so. But no way in hell it'll load OS over 5250MHz. Other chips are behaving similarly (booting all over the place). So it looks like those chips were worse than average. You should try to find cpu with highest temps. My 3930K is pretty hot one, so it might be high leakage chip. Quote Link to comment Share on other sites More sharing options...
Dancop Posted February 8, 2012 Share Posted February 8, 2012 Who is tones? How can I contact him? 1 Quote Link to comment Share on other sites More sharing options...
hokiealumnus Posted February 8, 2012 Share Posted February 8, 2012 Tones = computer shop. http://www.tones.be Quote Link to comment Share on other sites More sharing options...
sin0822 Posted February 8, 2012 Share Posted February 8, 2012 Who is tones? How can I contact him? lol@ that Quote Link to comment Share on other sites More sharing options...
Dancop Posted February 9, 2012 Share Posted February 9, 2012 Shame on me!! Quote Link to comment Share on other sites More sharing options...
Massman Posted February 10, 2012 Author Share Posted February 10, 2012 Alright, more cross-testing results. Seems like 3/5 57x chips were false positives: they rebooted to 57x in the office, but when re-testing at home they did ~53x. One chip is doing 5500 6x12t and 5610 2c, which is in line with Viss' findings that there seems to be a large variance between max frequency depending on the amount of cores you've enabled. Truth be told, this comes as a suprise to me as, just like Hiwa, I found most SBE chips to be quite balanced (similar to SB). I assume it comes down to particular chips as the 4 others are behaving quite consistent (hitting the same frequency on 2c or on 6c). One of the chips is a truely interesting chip. This one could reboot all the way upto 5843MHz in the office (tested multiple times) and seems to reboot at 57x here at home as well. When cooling down the chip, however, the reboot process gets a lot more complication. Here's what I found: - 5100MHz, 6c12t, +21°C => OS - 5300MHz, 6c12t, +8°C => OS - 5500MHz, 6c12t, +3°C => reboot, but no OS - 5500MHz, 6c12t, -7°C => no reboot! - 5500MHz, 2c2t, -15°C => reboot, but no OS It's the first Sandy Bridge(-E) I've seen behave like this. Really odd. Today's tests were on the XPower-II, which seemed to give more accurate results than the R4E I tested before. Not higher OC results, just more accurate following the method. This weekend, I'll re-try the method on the R4E to do another cross-check. Disappointing for sure ... but interesting nonetheless. 1 Quote Link to comment Share on other sites More sharing options...
sin0822 Posted February 10, 2012 Share Posted February 10, 2012 so it cannot do 5843 at all? Even when cooled lower to confirm binning method? Quote Link to comment Share on other sites More sharing options...
knopflerbruce Posted February 10, 2012 Share Posted February 10, 2012 So, it seems like these chips have cold issues worse than the worst K8 chips? Quote Link to comment Share on other sites More sharing options...
Hiwa Posted February 11, 2012 Share Posted February 11, 2012 Air boot into os 5550 pi 1m Restart method works at 5700 5820 restart method don't work and need shutdown Ss -5 5985 2c restart method 5740 2c boot into os 5590 6c boot into os Ln2 -50 can't even boot more than 5540 Quote Link to comment Share on other sites More sharing options...
Hiwa Posted February 14, 2012 Share Posted February 14, 2012 (edited) edit.. Edited February 14, 2012 by Hiwa Quote Link to comment Share on other sites More sharing options...
l0ud_sil3nc3 Posted February 16, 2012 Share Posted February 16, 2012 Air boot into os 5550 pi 1m Restart method works at 5700 5820 restart method don't work and need shutdown Ss -5 5985 2c restart method 5740 2c boot into os 5590 6c boot into os Ln2 -50 can't even boot more than 5540 so you found a good one? 1 Quote Link to comment Share on other sites More sharing options...
Hiwa Posted February 16, 2012 Share Posted February 16, 2012 (edited) 5540 6c chip -50 LN2 if u want call it good one, chip hates cold when SS it's good for 57XX but validation and 2 cores, when ln2 lower than -20 or so chip can't boot higher than 5540 (2c 6c same) PS better wait new batchs or IVY, don't waste money on C2 Edited February 16, 2012 by Hiwa Quote Link to comment Share on other sites More sharing options...
l0ud_sil3nc3 Posted February 16, 2012 Share Posted February 16, 2012 5540 6c chip -50 LN2 if u want call it good one, chip hates cold when SS it's good for 57XX but validation and 2 cores, when ln2 lower than -20 or so chip can't boot higher than 5540 (2c 6c same) PS better wait new batchs or IVY, don't waste money on C2 ahh I see, makes me glad I kept my C1, hopefully Ivy does not get delayed, here's hoping to an actual product launch on March 6. Quote Link to comment Share on other sites More sharing options...
thebanik Posted February 16, 2012 Share Posted February 16, 2012 ahh I see, makes me glad I kept my C1, hopefully Ivy does not get delayed, here's hoping to an actual product launch on March 6. I heard March 8th, Quote Link to comment Share on other sites More sharing options...
Hiwa Posted February 16, 2012 Share Posted February 16, 2012 march or april? Quote Link to comment Share on other sites More sharing options...
Massman Posted February 16, 2012 Author Share Posted February 16, 2012 I heard something else than March Quote Link to comment Share on other sites More sharing options...
thebanik Posted February 16, 2012 Share Posted February 16, 2012 march or april? March, ....Though yeah chinese sources quote April 8th......... Quote Link to comment Share on other sites More sharing options...
SoF Posted February 16, 2012 Share Posted February 16, 2012 March would surprise me - usually we get the distribution-sales-nda at work like 4-6 weeks before and I didn't saw that popping up in my company emails yet... Quote Link to comment Share on other sites More sharing options...
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