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ASUS X99 Motherboard Series - Official Support Thread (North American users only) - Page 452

post #4511 of 15774
Quote:
Originally Posted by Silent Scone View Post

@Praz,

Sitting down this evening I had a cold shut down on boot. Not had one for awhile since stabilising cache (what I thought was indefinitely). Did HCI for 1000% only recently too to rule out the memory with an issue I was experiencing with my work suite. Is this normally cache related? Seems linked to it at least. It's been completely fine, so all I've done is put an additional 10mv on top of cache voltage. Cache overclocking is definitely a tad unpredictable, and I've had no previous Haswell setups before to experiment with in the past.

...hey Silent-Scone (Happy 2015 btw), just a side-note as you wait for Praz

...did you shut down the PSU completely (or had a power-outage) by any chance with the system that was 'off' before you booted ? Every time my PSU has been 'off'' completely, Asus R V Ex and Max VII Formula will both start to boot, then shut down completely on their own, then reboot normally
post #4512 of 15774
Hi bud, yeah this is normal for a cold boot. It had already done the first power cycle, I was faffing about with paperwork after this and it turned off on it's own accord. Honestly I'm asking a question to which I already know the answer, I was just wondering if Praz could offer an explanation as to why Haswell's IVR does this. Simply turning off is pretty unhelpful tongue.gif

I'm fairly certain it is cache instability. The thing that annoys me about cache overclocking is you can use the machine and even stress test for a number of hours, but weeks down the line something will show it's ugly head to tell you it's in fact not stable.
Edited by Silent Scone - 1/11/15 at 11:51am
post #4513 of 15774
Quote:
Originally Posted by Silent Scone View Post

@Praz,

Sitting down this evening I had a cold shut down on boot. Not had one for awhile since stabilising cache (what I thought was indefinitely). Did HCI for 1000% only recently too to rule out the memory with an issue I was experiencing with my work suite. Is this normally cache related? Seems linked to it at least. It's been completely fine, so all I've done is put an additional 10mv on top of cache voltage. Cache overclocking is definitely a tad unpredictable, and I've had no previous Haswell setups before to experiment with in the past.

I think it may be related to how much voltage we are pumping into the cache on these asus boards. Early haswell days, nobody would go over 1.2V on the cache. Now with Devil's canyon and Haswell-E, people are pushing 1.35V+ on the cache, and I think it's the high voltage in itself that's causing random wierd instabilities.
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post #4514 of 15774
Quote:
Originally Posted by Yuhfhrh View Post

I think it may be related to how much voltage we are pumping into the cache on these asus boards. Early haswell days, nobody would go over 1.2V on the cache. Now with Devil's canyon and Haswell-E, people are pushing 1.35V+ on the cache, and I think it's the high voltage in itself that's causing random wierd instabilities.

My cache wasn't stable lol. I've been testing out 4Ghz as a happy medium and it's been fine however a retest of cache in AIDA suggests otherwise, so have pumped it up from 1.2 to 1.23v. I'm not a fan of putting in excess of 1.3v into cache either. There are mixed views on high ring voltage still. It is in actual fact tempting to not overclock cache at all, but it has quite a drastic knock-on to memory bandwidth.
Edited by Silent Scone - 1/11/15 at 11:43am
post #4515 of 15774
So I finished up my build with the x99-Deluxe. I turn it on and... nothing. I see code 00 on the mother board. I reseat the CPU, try again, same thing. I flash the latest BIOS and once again code 00. This is very annoying. I was reluctant to go with ASUS this time around and it seems to be biting me on the butt. I am debating whether to RMA it with newegg or with ASUS. Too bad Newegg has no advanced RMA. Should have went with amazon that has no stupid replacement only policy.
Edited by greg1184 - 1/11/15 at 11:57am
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post #4516 of 15774
Quote:
Originally Posted by Silent Scone View Post

@Praz,

Sitting down this evening I had a cold shut down on boot. Not had one for awhile since stabilising cache (what I thought was indefinitely). Did HCI for 1000% only recently too to rule out the memory with an issue I was experiencing with my work suite. Is this normally cache related? Seems linked to it at least. It's been completely fine, so all I've done is put an additional 10mv on top of cache voltage. Cache overclocking is definitely a tad unpredictable, and I've had no previous Haswell setups before to experiment with in the past.

Hello

Could well be cache instability. At times it can be difficult to dial in especially with higher memory speeds. All may be well when testing for stability because the cache is not being accessed at point of failure. With 3000MHz memory speeds and default cache voltage and speed I can pass all stability testing however Luxmark errors out in the RealBench stability test. A 0.020V cache voltage increase stops the errors.
post #4517 of 15774
Quote:
Originally Posted by greg1184 View Post

So I finished up my build with the x99-Deluxe. I turn it on and... nothing. I see code 00 on the mother board. I reseat the CPU, try again, same thing. I flash the latest BIOS and once again code 00. This is very annoying. I was reluctant to go with ASUS this time around and it seems to be biting me on the butt. I am debating whether to RMA it with newegg or with ASUS. Too bad Newegg has no advanced RMA. Should have went with amazon that has no stupid replacement only policy.

I created a Newegg RMA label and will RMA the CPU and the motherboard. Hopefully this will not be a pain in the ass.
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CoolingOSMonitorKeyboard
Corsair SP120 x6 push/pull Windows 10 Acer Predator X34 Corsair K70 RGB 
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post #4518 of 15774
Quote:
Originally Posted by Praz View Post

Hello

Could well be cache instability. At times it can be difficult to dial in especially with higher memory speeds. All may be well when testing for stability because the cache is not being accessed at point of failure. With 3000MHz memory speeds and default cache voltage and speed I can pass all stability testing however Luxmark errors out in the RealBench stability test. A 0.020V cache voltage increase stops the errors.

That's interesting to know, I was attempting this very thing you were describing out of curiosity earlier on and receiving BF at post with 3000mhz DRAM frequency and default cache frequency and voltage.

It was in fact cache instability (flagged in AIDA64 cache test even though it hadn't previously) even though all appeared well. Have increased cache voltage for 4Ghz from 1.2 to 1.23v. I've been trying different frequencies over the Christmas period to see what works best, and 4ghz seems to be the one to aim for. To match my core frequency of 4.375 on 125 strap I need at least 1.35v and I'm not sure that's unconditional.

Cache is definitely the most tricky part of this platform
Edited by Silent Scone - 1/11/15 at 2:06pm
post #4519 of 15774
Quote:
Originally Posted by greg1184 View Post

So I finished up my build with the x99-Deluxe. I turn it on and... nothing. I see code 00 on the mother board. I reseat the CPU, try again, same thing. I flash the latest BIOS and once again code 00. This is very annoying. I was reluctant to go with ASUS this time around and it seems to be biting me on the butt. I am debating whether to RMA it with newegg or with ASUS. Too bad Newegg has no advanced RMA. Should have went with amazon that has no stupid replacement only policy.

Check you 8 pin connection on the mother board. 00 means that the CPU can't boot. thumb.gif
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post #4520 of 15774
What can a typical 5820k @ 4.4Ghz shoot for cache speed wise? should 4ghz be obtainable with 1.2V or less? My CPU is coming from silicon lottery does 4.4Ghz @ 1.275v and 1.87v VCCIN. I know on the 4790k i had 4.0GHz cache speed was SIMPLE to stabilze, I guess 2011-3 is a little more difficult???
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