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ROG Crosshair VI overclocking thread - Page 1303

post #13021 of 17677
I'll also note, some benchmarks are very difficult to get consistent results because of the predictive capabilities of Ryzen. To get the best result on Cinebench, I often have to run it 4 or more times.
post #13022 of 17677
So after watching the video on Ryzen OC on in thread earlier, this happen.



This is on the TridentZ 3200C16, 2x16 (DR Hynix). I don't think it's stable but it's a start for me rolleyes.gif

Edit: Add AIDA Memory Bench


Edited by huyee - 5/1/17 at 6:31pm
post #13023 of 17677
Quote:
Originally Posted by S1L3N7D3A7H View Post

I'll also note, some benchmarks are very difficult to get consistent results because of the predictive capabilities of Ryzen. To get the best result on Cinebench, I often have to run it 4 or more times.

Oh yea, AIDA cache tests are affected by so many variables it is tough. I disabled everything in the start menu to isolate things best I could and waited 1-2 minutes after each reboot for any odd activities that may launch before starting the tests to keep it as apples to apples as possible.
Edited by madweazl - 5/1/17 at 6:32pm
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post #13024 of 17677
Quote:
Originally Posted by madweazl View Post

Oh yea, AIDA cache tests are affected by so many variables it is tough. I disabled everything in the start menu to isolate things best I could and waited 1-2 minutes for after each reboot for any odd activities that may launch before starting the tests to keep it as apples to apples as possible.

Same here, I would use HWinfo to make sure the CPU went into its P2 state (then killing HWinfo) before running any tests and reduced my background processes as much as I could to keep things consistent.
post #13025 of 17677
@S1L3N7D3A7H

Any updates on whether or not you were able to cure the graphics startup bug by raising SOC to 1.0v? Also you don't use G-Sync right?
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post #13026 of 17677
Quote:
Originally Posted by finalheaven View Post

@S1L3N7D3A7H

Any updates on whether or not you were able to cure the graphics startup bug by raising SOC to 1.0v? Also you don't use G-Sync right?

None yet, I said I would report back about it after a week of testing. No, no G-Sync.

Edit. I would also have to go back to 0.95v to confirm the graphics corruption returned.

My guess would be, by the time I would have gathered enough information to make any conclusions, the May AGESA code would have been released, making any observations obsolete again.
Edited by S1L3N7D3A7H - 5/1/17 at 6:50pm
post #13027 of 17677
Quote:
Originally Posted by S1L3N7D3A7H View Post

None yet, I said I would report back about it after a week of testing. No, no G-Sync.

Edit. I would also have to go back to 0.95v to confirm the graphics corruption returned.

My guess would be, by the time I would have gathered enough information to make any conclusions, the May AGESA code would have been released, making any observations obsolete again.

It has definitely returned for me on 1107. I am at about 0.975v. I am increasing it one notch at a time to see if the graphics bug disappears.
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post #13028 of 17677

In regards to my black screen on cold boot - I might be having this, but with only 1 monitor. Will try swapping cards over the weekend and see if the issue goes away
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post #13029 of 17677
Quote:
Originally Posted by bluej511 View Post
 
Quote:
Originally Posted by gtbtk View Post

You should really be looking at tuning for the best latency and not worry so much about frequency once you get the memory above about 2666 as the bandwidth should be more than suffoicient. Obviously faster frequencies will help as long as you use the tightest timings to go with it. You may find that a 3600mhz c16 kit running at 3200c14-13-13-34 gives you the best compromise of frequency and timings to get the lowest latencies and best gaming performance

Doing that will get gaming performance closer to the realm of 6900K. Ryzen at 62ns, it is almost there if you look at Timespy CPU results. Latencies have improved from 100ns at launch down to about 62ns so far with the commensurate improvement in gaming performance but Ryzen will never match a 5Ghz 7700K in a pure IPC combined with frequency battle especially in light of how well tuned the intel memory subsystem is these days..

Eh. I forgot where i saw it but for Ryzen and gaming the latency made no where near the difference that going with a higher strap did. Getting 5fps across the board in one game just by going from 2933 to 3200 is pretty damn impressive, especially for an older game.

It needs both, the frequency increases bandwidth and the latency helps with the throughput ( the work done over a period of time) which is the root of the problem. For memory access, it gets to a point where there is already enough bandwidth to support requirements and the rest goes to waste. 2666Mhz at 45ns (like an intel platform) will perform better under a gaming load than 3600mhz at 70ns. If latency is the same at both frequencies, then the 3600 will perform better. 

 

What happened to the memory latency when you changed strap? In all the experimentation done so far, the latency has dropped down to as low as 62ns as the frequencies have increased when combined with tighter timings.  Remember it started out at 100ns on launch day. One post I saw shower Timespy CPU scores over 9000, up from 6500 at launch, using 3200mhzc14 memory, the latency also dropped down to 62ns.

 

Right now though, Ryzen is still in that transition period between slow and best performance, things are changing on an almost daily level. Until the last bit of memory performance has been eeked out of theses systems, any configuration that you choose today is going to have to be a compromise of some sort. The best approach if you are after useful gaming performance is to try different configurations within the available range that has been opened up and pick the one that provides the best balance of speed and latency you can get. Resist the temptation to only go for the highest frequency in isolation. That helps in some workloads but is not always the best if you want the best frame rates. Cinebench and it would seem Blender, are examples of workloads that is not that impacted by the higher latencies.

post #13030 of 17677

You guys may find this a useful read and it may help explain some of teh more obscure voltage settings in the bios. It is a DDR4 point to point design guide

 

Like or hate Micron memory, they do produce the best documents that explain the various memory technologies they manufacture. This and the doco on GDDR5 and GDDR5x as it relates to GPUs is also good. Much easier to follow than anything that I have seen from samsung.

 

https://www.micron.com/resource-details/297e5bfa-6f92-4471-9b84-22b1ee76482d

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