Best OC Memory For The 1950X?

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Dec 3, 2006
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I am thinking of this set up but I am still struggling with my memory choice.

CPU: AMD Ryzen Threadripper 1950X
MOBO: Asus ROG Zenith Extreme
MEMORY: Corsair Vengeance LPX CMK32GX4M4B3200C14R (True latency 8,75ns)

Donnow where the 'R' stand for btw?

I am aware of these compatible memory lists:

AMD RYZEN Threadripper Compatible Memory -- CORSAIR
http://www.corsair.com/en-gb/memory/popular-memory/amd-ryzen-threadripper-compatible-memory

AMD RYZEN Threadripper Compatible Memory -- AMD
https://www.amd.com/system/files/2017-06/am4-motherboard-memory-support-list-en_0.pdf

But I also found this: CMK32GX4M4B3200C14 http://valid.x86.fr/r6mga6

This memory has the lowest CAS Latency I could find but does that really matter that much?

Corsair Vengeance LPX CMK32GX4M4B3200C14R --3,2GHz

Why not for instance?:

Corsair Vengeance LPX CMK32GX4M4B3600C16R --3,6GHz

Samsung B-Die RAM – AMD Ryzen Memory Support
http://techteamgb.co.uk/2017/05/06/samsung-b-die-memory-amd-ryzen-memory-support/

Asus ROG Zenith Extreme DDR4 Qualified Vendors List (QVL)
https://dlsvr04.asus.com/pub/ASUS/m...E/ROG_Zenith_Extreme_Memory_QVL_2133-3466.pdf

AMD Shares Details on Ryzen DDR4 Memory Support and Upcoming AM4 Updates
https://www.techpowerup.com/231518/...upport-and-upcoming-am4-updates?cp=2#comments

Mmmm ....

32GB G.Skill Flare X F4-3200C14Q-32GFX (True Latency 8,75ns)
 
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serbiaNem

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Stick with CL14 ram sticks for Threadripper. They're the Samsung B-Dies. You'll have a bad day with anything else really.
 
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Nice link TnX!

"... designed for AMD processors and platforms. Compatible with the new Ryzen™ Threadripper™ processors and AMD X399 chipset motherboards"

DDR4-3200MHz CL14 32GB (8GBx4)

DDR4-3466MHz CL16 32GB (8GBx4)

DDR4-3600MHz CL16-18-18-38 with 32GB (8GBx4)

DDR4-2933MHz CL14-14-14-34 128GB (16GBx8)

That changes a lot ...
____

Earlier I said ...

I certainly will but then I think CL14 will be more difficult to find if this is as important as serbiaNem just said. And that was exactly my question.

Of course I will have to look at the true latency numbers instead of the fabric latency numbers which can differ.

It's a trade off between memory speed and latency also In my choice for 16GB or 32GB and that is what makes it so difficult.

I know in the past we use to fill only two Dimm slots for better OC but I assume that filling four of them doesn't matter that much anymore today (X399 uses Quad Channel DDR4) but I could be wrong.

Of course if I think 16GB is enough that problem will be solved although I rather put in 32GB.
 
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Algrim

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For Ryzen and ThreadRipper, the motherboard QVL list is way more important than the memory manufacturer postulating that their memory will work. If the memory you want isn't on the QVL list, proceed with caution.
 
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I'd stick with G.skill Tridents and the newer Ryzen model, TZRX.



http://wccftech.com/gskill-amd-ryzen-optimized-trident-z-rgb-ddr4-memory/
Capacity: 32GB (8GBx4)
Tested Speed: 3200MHz
Tested Latency: 14-14-14-34
SPD Speed: 2133MHz
List***: https://gskill.com/en/finder?cat=31&prop_2=32GB+(8GBx4)&prop_6=0&series=0&prop_3=3200MHz&prop_4=14-14-14-34

*** Add (max 4) to compare list and compare

Series: Flare X (for AMD)
Capacity: 32GB (8GBx4)
Tested Speed: 3200MHz
Tested Latency: 14-14-14-34
SPD Speed: 2400MHz
List: https://gskill.com/en/finder?cat=31&prop_2=32GB+(8GBx4)&prop_6=0&series=2954&prop_3=3200MHz&prop_4=14-14-14-34

14 August 2016 - G.Skill Trident Z 32GB DDR4-3200 CL14 (F4-3200C14Q-32GTZ) recieved the 'Ultimate Awaed' in this hardware.info review https://uk.hardware.info/reviews/68...3200-cl14-memory-review-made-for-overclockers

28 March 2017 - For the overclockers the G.Skill Trident Z 32GB 3200 MHz CL14 (F4-3200C14Q-32GTZKW) is the best choice https://uk.hardware.info/reviews/71...-to-32-gb-review-ddr4-for-everyone-conclusion

For the overclockers the G.Skill Trident Z 32GB 3200 MHz CL14 is the best choice. The overclocking potential is excellent: the chips used in these modules can handle a very high voltage and they also perform very well indeed. The 4000 MHz at CL12 it achieved in our max. OC-test is impressive to say the least. Due to those low timings its performance is even higher compared to a HyperX-kit overclocked to 4133 MHz.

Confirmed:

August 19, 2016 - G.Skill Trident Z DDR4-3200, C14, 32GB, Quad-Channel Kit Review http://www.tomshardware.co.uk/g.ski...-32gtzkw-quad-channel-kit,review-33638-2.html

Verdict: The best performing quad-channel kit we’ve tested, G.Skill’s Trident Z F4-3200C14Q-32GTZKW appears a reasonable value when compared to other premium DDR4.


But G.Skill says Flare X is Compatible with AMD Threadripper and has a SPD speed of 2400MHz instead of 2133MHz for the Tridents.

Frankly I like to see some new tests now also because of the fresh link you posted from September:

G.Skill Unveils AMD Ryzen and Threadripper Optimized DDR4 Trident Z RGB Memory Kits – Available in Up To 128 GB Capacities For X399 http://wccftech.com/gskill-amd-ryzen-optimized-trident-z-rgb-ddr4-memory/

GSkill Announces New AMD Compatible Trident Z RGB Kits https://www.anandtech.com/show/11866/gskill-announces-new-amd-compatible-trident-z-rgb-kits

G.Skill Releases AMD-Compatible Trident Z RGB Kits http://www.tomshardware.com/news/gskill-trident-z-rgb-ram-amd-threadripper,35528.html
 
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tangoseal

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Stick with CL14 ram sticks for Threadripper. They're the Samsung B-Dies. You'll have a bad day with anything else really.
Im using gskill rgb 3000 on mine. Worked from day 1 out of the box. I just dont know if 3600 really helps anymore. I get over 80GB/sec bandwidth at 3000 speed. Im usong CL16 but 14 would probably givw me 2 or 3 fps in a game or shave a second off of video transcode. Not sure if its worth the premium really.
 
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What RAM Should You Buy for Intel & AMD Ryzen CPUs?
May 15, 2017 Tech Deals

Sep 2017 -- G.Skill Unveils AMD Ryzen and Threadripper Optimized DDR4 Trident Z RGB Memory Kits – Available in Up To 128 GB Capacities For X399 http://wccftech.com/gskill-amd-ryzen-optimized-trident-z-rgb-ddr4-memory/

Sep 2017 -- GSkill Announces New AMD Compatible Trident Z RGB Kits https://www.anandtech.com/show/11866/gskill-announces-new-amd-compatible-trident-z-rgb-kits

Sep 2017 -- G.Skill Releases AMD-Compatible Trident Z RGB Kits http://www.tomshardware.com/news/gskill-trident-z-rgb-ram-amd-threadripper,35528.html

Aug 2017 -- G.SKILL Announces New DDR4 Specifications for AMD Ryzen™ Threadripper™ Processors (Also DDR4-3600MHz 32GB (8GBx4)) https://www.gskill.com/en/press/view/g-skill-announces-new-ddr4-specifications-for-amd-ryzen™-threadripper™-processors
 
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JustReason

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For Ryzen and ThreadRipper, the motherboard QVL list is way more important than the memory manufacturer postulating that their memory will work. If the memory you want isn't on the QVL list, proceed with caution.
Not necessarily. At the time when I bought my FlareX, they were not on the QVL but Gskill did show them working at rated speeds on my Taichi board. So sometimes the Ram Manufacturers have their own tested list, as was the case with my Ryzen.
 

tangoseal

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While not the best it works 100% out of box.

I am using G.Skill RGB 32(4x8) kit of 3000 speed. Of course the new G.Skill dedicated to Threadripper kits should give a better OC. I am thinking that anything past 3200 is diminishing in return but I am not qualified to make such a claim short of my own opinion based on here and there observations.

I am going to pick up an 8700K this weekend if available from Microcenter and will probably get a 16GB 3600 kit for it. However, I will try and see if I can get the ram to run @ 3600 in the Threadripper and see how it scales. If I am able to do this I will of course share my amateur findings with the community here.
 
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While not the best it works 100% out of box.

I am using G.Skill RGB 32(4x8) kit of 3000 speed. Of course the new G.Skill dedicated to Threadripper kits should give a better OC. I am thinking that anything past 3200 is diminishing in return but I am not qualified to make such a claim short of my own opinion based on here and there observations.

I am going to pick up an 8700K this weekend if available from Microcenter and will probably get a 16GB 3600 kit for it. However, I will try and see if I can get the ram to run @ 3600 in the Threadripper and see how it scales. If I am able to do this I will of course share my amateur findings with the community here.
That would be very interesting.

29 July 2016 - G.Skill Trident Z 16GB DDR4-3000 CL15 kit: Among the best Skylake memory for overclocking! https://uk.hardware.info/reviews/6705/skylake-ddr3lddr4-review-20-memory-kits-tested


I am not sure which brand you're looking at but the G.Skill F4-3600C15D-16GTZ has the lowest True latency of 8,33ns while the other G.Skill's have a True latency of 8,89ns. But according to the review below other options maybe more attractive.

May 13, 2016 - G.SKILL TridentZ DDR4-3600 16GB Dual-Channel Memory Kit Review https://www.tweaktown.com/reviews/7...6gb-dual-channel-memory-kit-review/index.html

Excerpt:

Does raw speed always mean more performance? Let's find out.

Again, using the sticks as they are intended, we find the overall performance to be good, but it again is bested by six other kits this time. Even with our best run with the timings lowered, five of those six kits still offer higher performance.

The same holds true when it came to testing with RealBench. We found performance increases when adjusting the kit away from the XMP profile, but there are slower kits on the chart that overpower what this set of TridentZ memory has to offer.


24 March 2017 - G.Skill Trident Z 16GB DDR4-3866 CL18 kit memory review -- Conclusion: https://uk.hardware.info/reviews/71...b-ddr4-3866-cl18-kit-memory-review-conclusion

Conclusion

The maximum clock speeds available on DDR4 memory that you can buy keeps increasing. Faster memory can make some difference for gamers, however you shouldn't spend more than ten pounds extra, since the performance gains you get by spending more aren't worth the extra money. Above 3000 MHz faster memory doesn't increase performance as much compared to lower speeds, while the price difference becomes larger and larger.

As you might've noticed on the last page, memory kits like this are mainly a nice toy for overclockers. With a bit of luck and a lot of tinkering you might be able to lower the cas-latency or you might be able to increase the clock speed a bit higher, which will lead to top scores in specific benchmarks.

In the scene G.Skill has more or less developed themselves to the ultimate choice, since they're one of the few manufacturers that offer memory with speeds like this. Even though this doesn't necessarily mean that you'll also get the best performance, we once again broke clock frequency records in this review. Therefore this kit from G.Skill gets a well-deserved Ultimate Product Award, which luckily disregards the price-performance ratio.
 
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Hagrid

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I guess if I decide to get a TR my memory is on the list of the MSI MB.
G.Skill F4-3200C16D-32GTZKW

Hopefully the memory compatibility gets better.
 

tangoseal

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I guess if I decide to get a TR my memory is on the list of the MSI MB.
G.Skill F4-3200C16D-32GTZKW

Hopefully the memory compatibility gets better.
I had an MSI pop on me. Ymmv though. It was a very nice board for the money. I now have a Zenith and its nice too but the MSI felt like right in the sweet spot for price to features.
 

serbiaNem

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I had an MSI pop on me. Ymmv though. It was a very nice board for the money. I now have a Zenith and its nice too but the MSI felt like right in the sweet spot for price to features.
I had had an unusually slow boot with my old MSI TR board. The socket fitting for the CPU was better than my Gigabyte, but not worth the trade-off IMO.
 

sirmonkey1985

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I guess if I decide to get a TR my memory is on the list of the MSI MB.
G.Skill F4-3200C16D-32GTZKW

Hopefully the memory compatibility gets better.
it may but the odds of it ever showing up on there are slim.. most of the manufactures stop updating their QVL list after the first month.
 

tangoseal

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You can get cas 14 3600 now and if it runs it supposedly closes the vs. INTEL IPC gap substantially.

Apparently has to do with feeding that beast of infinity fabric
 
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