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post #2991 of 3233
I recall reading that the LPX 3200 was hit or miss, some versions were samsung b others were not but the price is definitely good.
post #2992 of 3233
Quote:
Originally Posted by ressonantia View Post

Quote:
Originally Posted by bl1tzk1213g View Post

What's the maximum bclk where it starts messing up with nvme drive?


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I think its roughly around 107MHz


What happens when I go over that? I was able to hit 107 bclk and my ram to 3146 roughly. Close enough to 3200 lol. I put it back to stock though


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post #2993 of 3233
Quote:
Originally Posted by microchidism View Post

I recall reading that the LPX 3200 was hit or miss, some versions were samsung b others were not but the price is definitely good.

Yeah I read that the 4.3 something version was Samsung B-die, where the 5.39 is Hynix. That being said unless you physically purchase from a store and look at the ram yourself you don't know what you're getting. I suspect that most of the newer corsair being sold is the later model, however for cheap 3200 ram that runs well at 2933 for Ryzen I think the Hynix version is still a great deal.
Edited by seanpatrick - 4/27/17 at 11:19pm
post #2994 of 3233
Quote:
Originally Posted by bl1tzk1213g View Post

What happens when I go over that? I was able to hit 107 bclk and my ram to 3146 roughly. Close enough to 3200 lol. I put it back to stock though


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For boards that don't have an external Bclk generator, it messes with the PCIe signals somehow and drops it back down to 2.0 or something. I can't remember where I read all of this so take with loads of grains of salt.

Found the source!
The Stilts Anandtech forum post
Quote:
The base-clock (BCLK)

Overclocking the base clock (BCLK) on AM4 platform is possible, however generally not recommended. This is due to its frequency relations with other interfaces, such as the PCIe. Unlike with Intel's more recent CPUs, there is no asynchronous mode (straps / gears) available, which would allow stepping down the PCIe frequency at certain intervals. The PCIe frequency relation is fixed and therefore it increases at the same rate with the BCLK. Gen. 3 operation can generally be sustained up to ~107MHz frequency and higher speeds will usually require forcing the links to either Gen. 2 or to Gen. 1 modes.

Unstable PCIe can cause various issues, such as system crashes, data corruption (M.2 SSDs), graphical artifacts and various kinds of other undefined behavior.

Edited by ressonantia - 4/28/17 at 12:05am
post #2995 of 3233
Quote:
Originally Posted by ressonantia View Post

For boards that don't have an external Bclk generator, it messes with the PCIe signals somehow and drops it back down to 2.0 or something. I can't remember where I read all of this so take with loads of grains of salt.
That was happening before too, overclocking with BLCK/FSB tends to get PCIe frequency over 100MHz and that may play havoc with GPUs. If possible, PCIe should always be locked manually to 100MHz to prevent it.
post #2996 of 3233
101-103 should be good. But honestly, even with an external BCLK Gen, you would really need to force PCIe 2.0 or 1.0.
post #2997 of 3233
Quote:
Originally Posted by mus1mus View Post

101-103 should be good. But honestly, even with an external BCLK Gen, you would really need to force PCIe 2.0 or 1.0.
That's (PCIe 2.0 ) not disastrous either and has very small impact am all but very top end GPUs anyway.
post #2998 of 3233
Quote:
Originally Posted by seanpatrick View Post

Yeah I read that the 4.3 something version was Samsung B-die, where the 5.39 is Hynix. That being said unless you physically purchase from a store and look at the ram yourself you don't know what you're getting. I suspect that most of the newer corsair being sold is the later model, however for cheap 3200 ram that runs well at 2933 for Ryzen I think the Hynix version is still a great deal.

Changing soc gets mine to 3200 though not reliably. Pressing the reset button once helps it train then its fine but needs to be done everytime.
    
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post #2999 of 3233
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Originally Posted by MishelLngelo View Post

That's (PCIe 2.0 ) not disastrous either and has very small impact am all but very top end GPUs anyway.

Very small. Unless you bench Catzilla, the difference is tiny.
post #3000 of 3233
Are memory issues improved at all? I have Trident Z 3200mhz 14 CL ram. I heard those have a good chance to run at 3200. Also heard I need a board with external clockgen. Only boards I know of with clkgen are GB K7 and Asrock Taichi/Fat Pro.

Do I still need a board with external clkgen? Will this ram run at 3200 on those boards?

Also -- Fatality Pro is same as Taichi right? Taichi sold out forever. I can get Fat Pro now for a +$50 premium which I will pay to spare myself more months of waiting. Better yet if 3200 ram will work on another board like GB 5.

Post 3000 on thread!!!!
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