I.nfraR.ed Posted September 14, 2013 Author Share Posted September 14, 2013 1.5Ω for 6800K and 0.7Ω for 5800K I didn't use the slow mode. I was booting at 1.55V for the cpu and 1.45V for the NB, then gradually increase cpu voltage in ET. It was the second session, benched several hours on the first one and about 2 hours for the second. It died at 1.55V when I tried to increase bclk from 117 to 118 in ET (no voltage change in settings, just the bclk). Then tried to power on the board, but it seemed to have a short, because psu protection was kicking in. Stopped benching and dried everything carefully checking the board, no visual burn on the mosfets. Then tried it with both cpus and guess that's what killed the 5800, stupid me The old board turned off immediately with 8-pin cpu power connector attached, the new one keeps running. Hopefully the new board is still alive, otherwise I will have a hard time with RMA'ing everything if it gets accepted at all. Do a working board show something on the debug display when powered on without a cpu? Quote Link to comment Share on other sites More sharing options...
The Stilt Posted September 14, 2013 Share Posted September 14, 2013 A working F2A85X-UP4 does not display anything in the segment display if there is no APU installed. Take a bare board (with nothing attached) an measure the resistance between one of the OS-CON capacitors located between the inductors (CPU loop, six inductors located on the left from the socket). The resistance should be around 1.6k (climbs for a while). The resistance for the NB loop (two inductors located above the socket) should be between 2.5 - 2.6k. Quote Link to comment Share on other sites More sharing options...
I.nfraR.ed Posted September 14, 2013 Author Share Posted September 14, 2013 Both seem about right. Thanks for the help and good luck in the competition! You have the tools and the knowledge Quote Link to comment Share on other sites More sharing options...
Wizerty Posted September 16, 2013 Share Posted September 16, 2013 (edited) I can't join the competition : http://hwbot.org/submission/2426428_wizerty_superpi___1m_a10_6800k_10sec_531ms?recalculate=true http://hwbot.org/submission/2426429_wizerty_superpi___32m_a10_6800k_10min_3sec_47ms?recalculate=true Edited September 16, 2013 by Wizerty Quote Link to comment Share on other sites More sharing options...
Remnant Posted September 16, 2013 Share Posted September 16, 2013 Bought a 8350 and 990fxa UD5 for this competition. UD5 had cb at -120 and cbb-80. Returned both for new 8350 & 990fxa-ud3 rev 2.0. It died from Condensation due to improper insulation around chokes and mosfet. Bought another 990fxa-ud3 rev 3.0 and it died during bios flash. Exchanged for 990fxa-ud3 Rev 4.0 and it wont work with 8350 or 1090t before or after bios flash. Works only with 965BE and its cb was -50 and cbb -30... Not sure why so low, or if the Hardware Gods hate me. Lot of time invested in this competition, nothing to show for it Quote Link to comment Share on other sites More sharing options...
dinos22 Posted September 16, 2013 Share Posted September 16, 2013 The Stilt cleaning up Quote Link to comment Share on other sites More sharing options...
BeepBeep2 Posted September 16, 2013 Share Posted September 16, 2013 Well, had efficiency issues then dropped a channel then wouldn't post...must have been doing it right. Still got 8 gig validation, fun stuff. Quote Link to comment Share on other sites More sharing options...
Xtreme Addict Posted September 16, 2013 Share Posted September 16, 2013 Congrats The Stilt Quote Link to comment Share on other sites More sharing options...
Massman Posted September 16, 2013 Share Posted September 16, 2013 The UD7 is a little tricky like that. I have tested 3 different boards, and they all behave the same. At least with the latest non-UEFI BIOS. Air: 275 max stable, sometimes doesn't boot, sometimes loses channel LN2: 335 max stable, after that freeze or no post To get to 300HTT+, you need to dial in the memory subtimings manually. Once you figured out a right problem, save it. Also, you will never be able to boot at the top HTT frequencies. My procedure usually is BOOT 240 -> 275 -> 295 -> 300 (-> 315 (if I want to get close to 330 HTT) This has worked on all three boards. Fyi, the UD3 can do 300HTT on air, and 350HTT on LN2. Less layer seems better for signaling ... Quote Link to comment Share on other sites More sharing options...
tiborrr Posted September 16, 2013 Share Posted September 16, 2013 I could run 990FXA-UD7 at 410 something on a Sempron 145. HTT wall also depends on the CPU, I have seen variances of about 40MHz from worst and best. Quote Link to comment Share on other sites More sharing options...
Massman Posted September 16, 2013 Share Posted September 16, 2013 Might be related to architecture or HTT spec. Sempron is still K10. I've tried multiple boards, multiple BIOSes, multiple CPUs, multiple memory kits, and they all have the exact same walls Quote Link to comment Share on other sites More sharing options...
Wizerty Posted September 16, 2013 Share Posted September 16, 2013 Can you please fix it... FM2 submition fail every time http://hwbot.org/submission/2426592_ http://hwbot.org/submission/2426602_wizerty_superpi___32m_a10_6800k_9min_54sec_812ms?recalculate=true thanks Quote Link to comment Share on other sites More sharing options...
Massman Posted September 16, 2013 Share Posted September 16, 2013 Fixed. You don't submit straight on the competition page? I don't understand why this is failing for you, but working for other people. Quote Link to comment Share on other sites More sharing options...
Wizerty Posted September 16, 2013 Share Posted September 16, 2013 yes from "normal" sublit request... but it works for AM3+... anyway, thanks Quote Link to comment Share on other sites More sharing options...
ivanov Posted September 16, 2013 Share Posted September 16, 2013 Fine competition Too bad I'm fourth in both AM3 categories ;P Quote Link to comment Share on other sites More sharing options...
Wizerty Posted September 16, 2013 Share Posted September 16, 2013 Thanks A LOT to The Stilt, you really deserve to win. Congratz to every body, nice competition, AMD FTW. Quote Link to comment Share on other sites More sharing options...
Calathea Posted September 16, 2013 Share Posted September 16, 2013 Congrats to all winners, well deserved and overall sick results in this competition. Just thinking of how fragile 6800k seems to be, how many was killed this comp? 1 Here, 1 for infrared, 2 for dfordog.. maybe more? Never killed a cpu before, this is kind of shocking. Quote Link to comment Share on other sites More sharing options...
BeepBeep2 Posted September 16, 2013 Share Posted September 16, 2013 (edited) The UD7 is a little tricky like that. I have tested 3 different boards, and they all behave the same. At least with the latest non-UEFI BIOS. Air: 275 max stable, sometimes doesn't boot, sometimes loses channel LN2: 335 max stable, after that freeze or no post To get to 300HTT+, you need to dial in the memory subtimings manually. Once you figured out a right problem, save it. Also, you will never be able to boot at the top HTT frequencies. My procedure usually is BOOT 240 -> 275 -> 295 -> 300 (-> 315 (if I want to get close to 330 HTT) This has worked on all three boards. Fyi, the UD3 can do 300HTT on air, and 350HTT on LN2. Less layer seems better for signaling ... I think this should just be called "Gigabyte syndrome", this issue goes back to 790FX. I'm running Rev 1.1 UD5, it would not POST over 272 HT Ref on LN2, around 270+ it kept looping "Updating backup BIOS to latest version..............." Easytune locked up the machine when I tried to change HT Ref in windows, luckily PSCheck worked to achieve higher frequencies, but I threw any possibility of running SuperPi out the window. Edited September 16, 2013 by BeepBeep2 Quote Link to comment Share on other sites More sharing options...
kirbster Posted September 16, 2013 Share Posted September 16, 2013 blew away the old records! Nice work! I will have to settle for fastest water cooled 5800K... No money! ;-) Quote Link to comment Share on other sites More sharing options...
The Stilt Posted September 16, 2013 Share Posted September 16, 2013 ust thinking of how fragile 6800k seems to be, how many was killed this comp? 1 Here, 1 for infrared, 2 for dfordog.. maybe more? Never killed a cpu before, this is kind of shocking. The APUs are really not that fragile. It is usually the voltage spike (e.g. a PState change with a large voltage offset) or a motherboard VRM failing or shorting due excess load or condensation. It is naturally possible to kill the APUs with voltage. They are more fragile than the FXs for example. About half of the die is reserved for the GPU so the power density on APUs is massive when they are pushed to the limits. I would guess it is rather the substrate-die interconnects which might be failing rather than the die itself. The CPU can usually take up to 1.95V on LN2 (depending on leakage) when only one of the CUs is being loaded. The GPU can take up to 1.7V, after that it dies. Quote Link to comment Share on other sites More sharing options...
Hero Posted September 17, 2013 Share Posted September 17, 2013 6800K stronger than 5800k,so I love 6800k so much,but nb voltage more than 1.65v,CPU pwm mosfet will be burned!CPU will also be implicated. Quote Link to comment Share on other sites More sharing options...
I.nfraR.ed Posted September 17, 2013 Author Share Posted September 17, 2013 I never went above 1.5V for NB, but it still died and afterwards the board killed 5800K from the last country cup, because I was stupid enough to try it. Quote Link to comment Share on other sites More sharing options...
Calathea Posted September 17, 2013 Share Posted September 17, 2013 Same here, it died with nb 1.55 volt, vcore 1.96 during POST. Probably shouldn't try to boot that high vcore Anyway really fun competition. Quote Link to comment Share on other sites More sharing options...
ATMINSIDE Posted September 18, 2013 Share Posted September 18, 2013 The man himself came in and put out a hurting! Some great scores out there guys! Quote Link to comment Share on other sites More sharing options...
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