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Intel Broadwell-C Ownership Club - Page 108

post #1071 of 1330
Quote:
Originally Posted by adversary View Post

I'm owner of this chip but I still don't understand what makes it so fast and smooth for gaming biggrin.gif

That can be only L4 cache, I see no other logical reason, but... but L4 speed and latency doesn't look so great really. Just read speed is great, write and copy are fast as fast RAM, and latency is even worse than very fast RAM.

I understand that cache is different than RAM and do not communicate same way but L4 is still 40+ns latency, and I had seen people get less than 40ns latency with very fast RAM. I wonder, for example if you have 6700K and very fast RAM which match L4 speed and have better latency, would it perform same in games (or even better, because L4 is just 128mb compared to 8GB or 16GB or 32GB of RAM) ?
read the last couple pages. there has been some really great posts on that lately. Basically needs a 7700k w/ at least 3733 c-15 ram to match the L4's latency. Being on die is why it is better # for #.
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post #1072 of 1330
take a look :

https://www.techpowerup.com/forums/threads/share-your-aida-64-cache-and-memory-benchmark-here.186338/page-26

there is many Skylake owners with very fast DDR4. and some of them have way better latency (38.1ns, 38.5ns, 36.9ns, 40.9ns). there is even 4790K with DDR3 2400Mhz but with 8-11-8-28 CR1, and RAM latency in Aida64 test is 38.2ns.

there is 6700K with DDR4 3728Mhz (15-15-15-36-CR2) - Read 53997mb/s, Write 56717, Copy 50359, latency 38.5ns. That Read speed is in range with L4. Would such PC outperform 5775C in games?
post #1073 of 1330
we think so, yes. But it may not be as smooth with as smooth framepacing, but it is being tested currently. We should have some results soon. The imc is holding it back, but in theory, a 7700k with >40gb/s should actually beat a 5775-c. But it takes that hella fast ram and a good overclock on a chip that is 2 platforms newer lol.
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post #1074 of 1330
Quote:
Originally Posted by adversary View Post

take a look :

https://www.techpowerup.com/forums/threads/share-your-aida-64-cache-and-memory-benchmark-here.186338/page-26

there is many Skylake owners with very fast DDR4. and some of them have way better latency (38.1ns, 38.5ns, 36.9ns, 40.9ns). there is even 4790K with DDR3 2400Mhz but with 8-11-8-28 CR1, and RAM latency in Aida64 test is 38.2ns.

there is 6700K with DDR4 3728Mhz (15-15-15-36-CR2) - Read 53997mb/s, Write 56717, Copy 50359, latency 38.5ns. That Read speed is in range with L4. Would such PC outperform 5775C in games?

My theory is yes, but it's actually extremely difficult to sustain those ram speeds 24/7 and definitely not guaranteed. I'm already having a hell of a time getting to the 3733mhz that my ram is actually rated for because of potato IMC.
post #1075 of 1330
Quote:
Originally Posted by KraxKill View Post

So....I've done some preliminary testing but this thing is miles ahead of my 4790k @ 5.2ghz. @ 1.390v.

With the settings I'm running, Arma 3 Altis benchmark hits 103 fps @ 4.2ghz @ 1.35v vs just 93fps on my 4790k on what could be considered a one of a kind chip.

I need more time to test the behavior of this chip elsewhere to properly select a keeper but to my surprise Slackaveli was not kidding. This thing really does fly. It's 10% faster than my 4790k at 5.2ghz while running just 4.2 ghz and I'm sure there is more room in there.

I feel these things are going to be sold out tomorrow....

dayuum and i was thinking that my 5g 4790k couldn't be the problem,but 10% over a 4790k 5.2g.that's very good.
try the bin and post ovc results,and remember the stock voltages bios without turbo and cpu'z and the batch number,and ye do test games,not cinebench or whatever biggrin.gif
i'm still worried to get a really dud,i have a weird feeling.
well looking that way is faster than a skylake/kabylake @4.2ghz,since you'll have to run very fast ram,but not all can do it (imc limits).
    
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post #1076 of 1330
,
Edited by CoreyL4 - 5/19/17 at 10:07pm
post #1077 of 1330
Quote:
Originally Posted by KraxKill View Post

So....I've done some preliminary testing but this thing is miles ahead of my 4790k @ 5.2ghz. @ 1.390v.

With the settings I'm running, Arma 3 Altis benchmark hits 103 fps @ 4.2ghz @ 1.35v vs just 93fps on my 4790k on what could be considered a one of a kind chip.

I need more time to test the behavior of this chip elsewhere to properly select a keeper but to my surprise Slackaveli was not kidding. This thing really does fly. It's 10% faster than my 4790k at 5.2ghz while running just 4.2 ghz and I'm sure there is more room in there.

I feel these things are going to be sold out tomorrow....

Not bad for a drop in upgrade eh?
The GTX 1080ti thread guys are too narrow minded.

Anyway whats that benchmark? I might try to duplicate your settings on my setup.
post #1078 of 1330
Quote:
Originally Posted by Dasboogieman View Post

Not bad for a drop in upgrade eh?
The GTX 1080ti thread guys are too narrow minded.

Anyway whats that benchmark? I might try to duplicate your settings on my setup.
that's the part they just couldnt grasp. it's a $50-$100 upgrade for those on a z97. that's where the real butthurt began. It wasnt until later I broke it to them that it beat ALL of their cpu's in games lol.
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post #1079 of 1330
Quote:
Originally Posted by Slackaveli View Post

that's the part they just couldnt grasp. it's a $50-$100 upgrade for those on a z97. that's where the real butthurt began. It wasnt until later I broke it to them that it beat ALL of their cpu's in games lol.

You got my thanks for that, having 2 1080ti and not being able to unleash there full power was a shame.
I love that cpu, more power less temp, I intended to go full waterloop with my 4790k but I dont need to anymore (saved 700$cad biggrin.gifbiggrin.gifbiggrin.gif)

Even though it was a 550$CAD drop in for me... , I still haven't found a buyer for my 4790k, (but 700 -550 still save 150 loll)

here in Quebec, I only had 2 offer at 300$CAD... at that price I will keep it as a spare part until I get a good offer or if a friend need it.


Quote:
Originally Posted by KraxKill View Post

This board has had my 4790k at 5.2ghz so I doubt it's board quality. I'm going to try 2401 and flash it using their fancy bios flash utility vs doing it throug ezflash or the bios like I have been. Will see.

I have a Asus Z97A too and I must admit that the special bios update tool was hidden in the middle of other update...

I don't know if your still at the 2401 but me I use the latest Bios with that tool and it work fine. I presume latest bios would be better for stability.

The only problem I had was when changing memory speed to a higher speed result in no being able to go past post.(board try to boot a lots of time had to shut down manualy) then it say overclock fail and put you back to bios but even after putting back the memory speed to the same number as before it did not work.(I keep asking myself : why was it working yesterday and not now... its the same setting.) I had to restore setting to defaut and put back the same number everywhere and it work. it was weird, it did not happen every time but It happen to me 3 time on around 50 fail boot test lol I did play A LOT with memory setting until sweet spot.

It was long but after I found out that, after finding good cpu setting, if you save the overclock setting (in the last page of the bios you can manage different overclock profile) just loading the profile also fix it if it happen. its like the speed get lock even though it tell its lower, it may save some time and problem.
Edited by illypso - 5/19/17 at 10:48pm
post #1080 of 1330
Quote:
Originally Posted by illypso View Post

You got my thanks for that, having 2 1080ti and not being able to unleash there full power was a shame.
I love that cpu, more power less temp, I intended to go full waterloop with my 4790k but I dont need to anymore (saved 700$cad biggrin.gifbiggrin.gifbiggrin.gif)

Even though it was a 550$CAD drop in for me... , I still haven't found a buyer for my 4790k, (but 700 -550 still save 150 loll)

here in Quebec, I only had 2 offer at 300$CAD... at that price I will keep it as a spare part until I get a good offer or if a friend need it.
I have a Asus Z97A too and I must admit that the special bios update tool was hidden in the middle of other update...

I don't know if your still at the 2401 but me I use the latest Bios with that tool and it work fine. I presume latest bios would be better for stability.

The only problem I had was when changing memory speed to a higher speed result in no being able to go past post.(board try to boot a lots of time had to shut down manualy) then it say overclock fail and put you back to bios but even after putting back the memory speed to the same number as before it did not work.(I keep asking myself : why was it working yesterday and not now... its the same setting.) I had to restore setting to defaut and put back the same number everywhere and it work. it was weird, it did not happen every time but It happen to me 3 time on around 50 fail boot test lol I did play A LOT with memory setting until sweet spot.

It was long but after I found out that, after finding good cpu setting, if you save the overclock setting (in the last page of the bios you can manage different overclock profile) just loading the profile also fix it if it happen. its like the speed get lock even though it tell its lower, it may save some time and problem.

Yeah, thanks dude. I did wind up flashing the latest BIOS once i got it figured out. The 2401, was actually throttling the chip at 65W. Must have been before Asus figured out how to control the TDP and reworked the BIOS Now I'm on the latest and no more throttling.

Thanks for the profile tip. I do use that. It took some work getting my 4790K all dialed in so I learned to use it.

The memory thing you're experiencing. Had the exact same issue during post where it would just light the RAM LED and do nothing. I wound up having to press that button on the motherboard, next to the xmp LED, and it would shut off, and load on the next boot with, "mem system check OK" or something like that and I was good to go from there. Hasn't happened again, once I got the XMP profile all loaded in, but initially I was pulling the CMOS battery, resetting it, thinking ***... but It's all gravy now.

I'm running Prime95 on the chips right now to sort em out.
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