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Old 01-20-2019, 02:57 PM
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It seems ram related because it only happens when the ram is stressed but happens regardless of where the ram is set. SmallFFT shouldn't run very long on an unstable core, usually it will crash in minutes if not, seconds.
I stress one thing at a time, ram 1333, cache x40 then I go for core, that's the absolute basics.
SmallFFT will run at x48 with 1.32v if the ram is set to 1333 or 2400.
Blend will crash at seemingly random times no matter where the ram is set. The only thing I can do to change it is to apply more vcore. I shouldn't need to do that to get only 4.7Ghz because this CPU ran 4.7 for years with only 1.22 with no delid...with a custom loop but still, that's a huge difference. I'm using the exact same ram too.



SmallFFT simply shouldn't be able to run for 2 hours if a core isn't stable and if SmallFFT won't crash the core then Blend definitely won't do it because it's easier on the core.
And if Blend is failing because of unstable ram then the speed of the ram should make some difference but it doesn't.


That's why this is all really confusing, when I started this I set cache and ram to stock speeds with manual voltage.
Then I plugged in 48x on the core and set 1.3 iirc and stressed the core using SmallFFT for a couple hours, no issues, no errors.
Then I enabled XMP and ran Blend to make sure it would work at 4.8ghz...crash.
Set ram back to 1333 and ran blend...crash. It just doesn't make sense.

Quote: Originally Posted by SpeedyVT
If you're not doing extreme things to parts for the sake of extreme things regardless of the part you're not a real overclocker.
Quote: Originally Posted by doyll View Post
The key is generally not which brands are good but which specific products are. Motherboards and GPUs are perfect examples of companies having everything from golden to garbage function/quality.
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Old 01-20-2019, 03:07 PM
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Hey all, I joined this club a super. long. time ago now.

My Haswell is still ticking and still seems more than sufficient to feed my 1080tis in nearly every game I play.

I run mine on a Maximus VI Hero with the last bios for it.

It's a SiliconLottery binned delid and tested stable up until 4.8GHz. It takes 1.33v for stability at 4.8GHz, though SL claimed it only needed 1.30v and no other changes. It also needs 1.9v input voltage. A lot of the time to save on heat, I run it at 4.5GHz w/ 1.175v. I recently cleaned my radiator and redid my thermal paste (still using Prolimatech PK-3 Nano- it's similar to MX-4) and under full load in x264 the cores settled at 35c and socket around 52c.

Anyone here tried Shadow of the Tomb Raider on Haswell under DX11? EVGA Precision X reports that my cards are only loaded around 75%. I can't use DX12 as I am a Win7 holdout. But so far, it is the only game I have encountered that my CPU can't seem to keep up with and run at a constant 60fps @ 5760x1080. It generally keeps good framerates in action areas but in the big Aztec style city I get big framerate drops, especially if looking down the side of the mountain because of the ridiculous draw distances.

It isn't a big deal because my wife plays it and I don't have much interest in it but I thought I'd ask other Haswell owners how that game runs on their setups. Thanks.

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Old 02-02-2019, 09:00 PM
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Hey everyone, sorry if there's another thread this should go. I'm planning a "best possible on DDR3" build with a 4790k. I need input on mobo/ram choice, it's hard to find info on what would be considered the best mobo for OCing the 4790k and pushing memory OC, and for the ram I want 16GB of the highest binned kit I can find, not sure how the chip's IMC handles 2x8GB vs 4x4GB but 4x4 kits seem to come rated with better freq/timings. CPU/RAM/mobo are likely going to be bought used.

https://pcpartpicker.com/list/Rh8CWD < What I've thought of so far. The only part I actually have right now is the GPU from an old build. Appreciate any help!
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Old 02-02-2019, 10:35 PM
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Quote: Originally Posted by Singularity48 View Post
Hey everyone, sorry if there's another thread this should go. I'm planning a "best possible on DDR3" build with a 4790k. I need input on mobo/ram choice, it's hard to find info on what would be considered the best mobo for OCing the 4790k and pushing memory OC, and for the ram I want 16GB of the highest binned kit I can find, not sure how the chip's IMC handles 2x8GB vs 4x4GB but 4x4 kits seem to come rated with better freq/timings. CPU/RAM/mobo are likely going to be bought used.

https://pcpartpicker.com/list/Rh8CWD < What I've thought of so far. The only part I actually have right now is the GPU from an old build. Appreciate any help! [IMG class=inlineimg]/forum/images/smilies/biggrin.gif[/IMG]
Looks good but the crucial SSD is not a great price for a low performing unit. You can find much better deals elsewhere.

Also I'll add in that I found the MSI Z87-G55 mobo to be quite good for OC'ing haswell/devil's canyon. Had a G3258 running @ 4.9 for 2 years and a 4970K @ 4.8 for another 18 months. Not a single hiccup or issue in over 3 years of demanding daily usage.

I'm sure others will chime in and give you a clearer picture as well.


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Old 02-02-2019, 10:45 PM
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2133 isn't the highest bin unless it's really tight timings. I just bought a used set of 2400mhz cas 11 16gb G.Skill for $100 iirc.
Similar kits are fairly common here on the marketplace.
Look at the higher end boards QVL and find the one that runs a wider range of fast ram. The CPU's IMC plays a role as well.


I think everyone made a good z97 board TBH, just look at the high end. The difference between high end boards isn't going to be very large on air or water cooling.


EDIT:
https://www.overclock.net/forum/1468...gb-2400-a.html

Quote: Originally Posted by SpeedyVT
If you're not doing extreme things to parts for the sake of extreme things regardless of the part you're not a real overclocker.
Quote: Originally Posted by doyll View Post
The key is generally not which brands are good but which specific products are. Motherboards and GPUs are perfect examples of companies having everything from golden to garbage function/quality.
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Last edited by white owl; 02-02-2019 at 10:52 PM.
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Old 02-02-2019, 11:34 PM
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Seems these are my choices for well binned ram:

2133 8-10-10-27
2400 9-11-11-31
2666 10-12-12-31
all at 1.65v

Timings seem to loosen quite a bit at 2800+, lowest timings I could find at 2800 were 11-14-14-35.
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Old 02-03-2019, 12:52 AM
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The actual performance difference between all of them would be small, I'd check the QVL of a motherboard you like before picking a kit.
Crucial seems to think that high CAS is ok since the speed is climbing so as long as the timings aren't super loose I'd think faster is still the way to go.
https://www.crucial.com/usa/en/memor...-speed-latency

Without a benchmark of each kit on the same platform it's hard to say.

Quote: Originally Posted by SpeedyVT
If you're not doing extreme things to parts for the sake of extreme things regardless of the part you're not a real overclocker.
Quote: Originally Posted by doyll View Post
The key is generally not which brands are good but which specific products are. Motherboards and GPUs are perfect examples of companies having everything from golden to garbage function/quality.
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Old 02-03-2019, 01:50 AM
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Found this article from derbauer https://overclocking.guide/ddr3-ram-myths-enlightened/

Ranks play a bigger role than I thought they would, so I guess 2x8GB 2400c10 is the best specs overall, easier on the IMC and performs better clock for clock compared to single rank dimms in CPU bottlenecked programs. I'll likely end up getting some Asus z97 or maybe the Maximus VI, those boards seem to dominate the top 10 on userbenchmarks for the 4790k.
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Old 02-07-2019, 02:09 PM
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So it's been a few years since DC has been out, has anyone ever compiled the max. long term safe voltages for it yet? I've started toying around with watercooling, running the CPU bare die and the temps don't seem to be a limiting factor anymore. Curious as to what's the upper end of safeish voltage to run a 24/7 overclock.

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Old 02-07-2019, 04:31 PM
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Quote: Originally Posted by Loladinas View Post
So it's been a few years since DC has been out, has anyone ever compiled the max. long term safe voltages for it yet? I've started toying around with watercooling, running the CPU bare die and the temps don't seem to be a limiting factor anymore. Curious as to what's the upper end of safeish voltage to run a 24/7 overclock.
If temps aren’t a concern I see no harm in giving it 1.4-1.45v under water + bare die.

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