I heard ryzen is bit picky on ram, any recommendation for a good ddr4 for ryzen?
ddr4 for ryzen?
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Gskill Tridentz 3200 14-14-14-34 kits should all be great picks since the all b-die, I know mine works great at rated speeds on asus x370 pro and 1700.
They might be a bit more than other kits, but you get what ya pay for.
I only got the 2x8gb kit so I cant say if other kits work as good.
They might be a bit more than other kits, but you get what ya pay for.
I only got the 2x8gb kit so I cant say if other kits work as good.
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Yep. The G.Skill 3200C14 2x8GB kits, as well as the 3600C16 2x8GB kits (what I have) should work well and be usable at or near their top speeds on a Ryzen system.
My kit is running at 3219 (100.6MHz BCLK and DDR4-3200 setting) 14-14-14-14-34-2T at 1.351v on the Crosshair VI Hero board with 0902 BIOS. I haven't had a chance to use the new (given to us this morning in the Crosshair VI overclocking thread) 0038 or 1001 BIOSes yet. I'll be testing those tonight after work.
My kit is running at 3219 (100.6MHz BCLK and DDR4-3200 setting) 14-14-14-14-34-2T at 1.351v on the Crosshair VI Hero board with 0902 BIOS. I haven't had a chance to use the new (given to us this morning in the Crosshair VI overclocking thread) 0038 or 1001 BIOSes yet. I'll be testing those tonight after work.
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Quote:
DRAM Boot: 1.35v
SOC: 1.15v
If those don't work try increased DRAM Voltage and DRAM Boot, maybe up to 1.4v. I'm assuming the Prime has DRAM Boot -- it might not.
Note: You might not be able to get higher speeds at this time. You might have to wait for future BIOS versions. AMD is releasing a big update to board manufacturers for speed and stability/compatibility in May.
DRAM Voltage: 1.35vOriginally Posted by Voitto
I'm runing corsair dominator platinum on 1800x on asus prime x370 pro. I got it to 2666mhz at 1.250V with 16-16-16-16-38. Anyone know how I can get it to 2933mhz?
DRAM Boot: 1.35v
SOC: 1.15v
If those don't work try increased DRAM Voltage and DRAM Boot, maybe up to 1.4v. I'm assuming the Prime has DRAM Boot -- it might not.
Note: You might not be able to get higher speeds at this time. You might have to wait for future BIOS versions. AMD is releasing a big update to board manufacturers for speed and stability/compatibility in May.
Quote:
I am running into the same problem with the same ram. I have tried adjusting voltages and timings but 2666 at 3.5 volts is as good as it gets. XMP is useless on the Dominator Platinum at this time. I would suggest to anyone looking into a build to consult the QVL from the motherboard manufacturer before buying memory. I have the gskill 2 x 8 3600 coming in today as it IS on the QVL for my board. From what I have read the ryzen likes samsung single-sided memory. RGB memory seems to be an issue with some boards as well.Originally Posted by Voitto
I'm runing corsair dominator platinum on 1800x on asus prime x370 pro. I got it to 2666mhz at 1.250V with 16-16-16-16-38. Anyone know how I can get it to 2933mhz?
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Quote:
You'll probably gain more from bumping from 2666 CR1 to 3200 CR2 but I'm not sure. Speed generally trumps latency.Originally Posted by chew*
Well im testing a rather expensive set of pc 3400 16-16-16 b die now.
1T CR ?
pc3200 ?
So far can only boot 2666.
Quote:
![smile.gif]( "smile.gif")
but i don't.
Pretty sure this set can do CR 1 fine @ spec for $340 usd.
Preety sure Cpu, agesa or bios is my limiting factor with double sided 16g sticks. I have even tested single dimm. Same outcome.
That's if i had access to CROriginally Posted by superstition222
You'll probably gain more from bumping from 2666 CR1 to 3200 CR2 but I'm not sure. Speed generally trumps latency.
Pretty sure this set can do CR 1 fine @ spec for $340 usd.
Preety sure Cpu, agesa or bios is my limiting factor with double sided 16g sticks. I have even tested single dimm. Same outcome.
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A board doesn't have a CR adjustment? Wow.Originally Posted by chew*
Thats if i had access to CRbut i don't![smile.gif]( "smile.gif")
Quote:
![smile.gif]( "smile.gif")
I can do 3200 fine on the 2x8g b die.
So far no go on the 2x16g b die.
Gonna swap boards. This is a cheap b350. Try x370 next..
More like a cpu has us locked out from subtimingsOriginally Posted by superstition222
A board doesn't have a CR adjustment? Wow.
I can do 3200 fine on the 2x8g b die.
So far no go on the 2x16g b die.
Gonna swap boards. This is a cheap b350. Try x370 next..
Quote:
With the data fabric being both locked to the memory clock and a bottleneck in many situations, I'd likely be willing to make extreme sacrifices in timings to get those higher clocks. However, I cannot sacrifice memory capacity. So, I'm mostly interested in then maximum memory clocks that are likely to be 24/7 stable, with two doubled-sided DIMMs...even if I have to use very slack timings and even if memory benchmarks get worse performance.
In Ryzen's case, clock speed is likely to trump any and all timing concerns, even if the memory itself gets slower.Originally Posted by superstition222
You'll probably gain more from bumping from 2666 CR1 to 3200 CR2 but I'm not sure. Speed generally trumps latency.
With the data fabric being both locked to the memory clock and a bottleneck in many situations, I'd likely be willing to make extreme sacrifices in timings to get those higher clocks. However, I cannot sacrifice memory capacity. So, I'm mostly interested in then maximum memory clocks that are likely to be 24/7 stable, with two doubled-sided DIMMs...even if I have to use very slack timings and even if memory benchmarks get worse performance.
Quote:
I realized that I have it wwaaayy undervolted. Corsair suggests 15-17-17-35 at 1.35V. Also my timings are not far off but I managed to stablize it at 16-16-16-16-38 2666mhz at 1.23V. I will try the corsair suggested timings and clock and voltage and post here and on my "self-update" thread. Also, if it matters, my cpu (1800x) is running at 3.9Ghz at 1.2850~ Volts. [the .2850 is an estimate but it's only a few .00xx away from the .2850]Originally Posted by Danomanok
I am running into the same problem with the same ram. I have tried adjusting voltages and timings but 2666 at 3.5 volts is as good as it gets. XMP is useless on the Dominator Platinum at this time. I would suggest to anyone looking into a build to consult the QVL from the motherboard manufacturer before buying memory. I have the gskill 2 x 8 3600 coming in today as it IS on the QVL for my board. From what I have read the ryzen likes samsung single-sided memory. RGB memory seems to be an issue with some boards as well.
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With Ryzen speed definitely trumps latency . The reason is the whole infinity fabric thing has other internal clocks (south bridge ht link and cache speeds) running at a direct percentage of the ddr4 speed. While lower latency may be good for sheer memory throughput it can't compete with the fact that faster memory essentially OCs other things. This is also why going from 2400 to 3200 on Ryzen gives you a huge bump like 10-25%. Sad that most reviewers just stuck with 2133 or 2400.
Quote:
I do and i bought memory till i found what worked best pre launch.
Going to dual sided however changes things drastically.
Its easy to say run 3200. Much harder to actually do it.
When the system will not post above 2666 regardless of timings that is when you try to suck in timings instead.
Feel free to try DS 16g sticks yourself.
Im testing pc3400 16-16-16-36 16g x2 samsung b die.
Its the best bin in this speed. I highly doubt its the memory
![smile.gif]( "smile.gif")
Best so far is 2666 14-14-14-34 @ rated voltage. Far exceeding AMD recently stated "spec" ( pc2400 with DS horrible timings )
Same board. Same CPU. Same Bios. Same Ic's under heat spreader. Same vendor.
DS testing
![32g%20new%20bios_zpspja85qx0.jpg]( "32g%20new%20bios_zpspja85qx0.jpg")
SS testing
![x370%2032m%20w10_zpspmeutkgn.jpg]( "x370%2032m%20w10_zpspmeutkgn.jpg")
Its more the inability to get it to post. Most reviewers do not bench.Originally Posted by AcesAndDueces
With Ryzen speed definitely trumps latency . The reason is the whole infinity fabric thing has other internal clocks (south bridge ht link and cache speeds) running at a direct percentage of the ddr4 speed. While lower latency may be good for sheer memory throughput it can't compete with the fact that faster memory essentially OCs other things. This is also why going from 2400 to 3200 on Ryzen gives you a huge bump like 10-25%. Sad that most reviewers just stuck with 2133 or 2400.
I do and i bought memory till i found what worked best pre launch.
Going to dual sided however changes things drastically.
Its easy to say run 3200. Much harder to actually do it.
When the system will not post above 2666 regardless of timings that is when you try to suck in timings instead.
Feel free to try DS 16g sticks yourself.
Im testing pc3400 16-16-16-36 16g x2 samsung b die.
Its the best bin in this speed. I highly doubt its the memory
Best so far is 2666 14-14-14-34 @ rated voltage. Far exceeding AMD recently stated "spec" ( pc2400 with DS horrible timings )
Same board. Same CPU. Same Bios. Same Ic's under heat spreader. Same vendor.
DS testing
SS testing
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