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Old 16-10-20, 10:11 AM
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AMD's Ryzen 5000 processors have a higher memory "sweet spot", claims leaked slide

4,000 MHz is the new 3,800MHz.



Read more about AMD's Ryzen 5000 series and its 4000MHz memory sweet spot.

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Old 16-10-20, 12:26 PM
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This is interesting news as the I/O die was seemingly unchanged if you read by the official presentation and that handles the Infinity Fabric? So its speculated that the upper tier is now 2000Mhz instead of 1800Mhz for Fclk and 4000 for Mclk - all helps I suppose. Samsung B-Dies go to 4000?
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Old 16-10-20, 12:42 PM
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This is misleading. Getting 3800mhz was if you were the golden boy. I couldn't even get my RAM to 3700, and most can't either and that was on a 3950x.

Which is probably why it has "good luck" written at the bottom. Yeah, you'll friggin need it ffs.
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Old 16-10-20, 03:03 PM
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Yeah, 1800 for IF and 3600 for Dram is the sweetspot for Zen2, an extra 200Mhz for IF might seem plausible if they refreshed the 3rd chiplet. Dunno, my 8Pack b-dies should do 4000/C19, might be putting 1.5V through them though 😜
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Old 16-10-20, 09:29 PM
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Does low latency 3200Mhz still offer comparable performance with 3600 or 3800Mhz higher latency memory on Zen 2?
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Old 16-10-20, 11:01 PM
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Quote:
Originally Posted by AngryGoldfish View Post
Does low latency 3200Mhz still offer comparable performance with 3600 or 3800Mhz higher latency memory on Zen 2?
Yes. Though obviously faster RAM with low latency is good also.
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Old 17-10-20, 10:13 AM
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Originally Posted by AngryGoldfish View Post
Does low latency 3200Mhz still offer comparable performance with 3600 or 3800Mhz higher latency memory on Zen 2?
I looked at GamersNexus video on this matter the other day, and the difference between 3200MHz and 3600MHz, with different timings, was an average 3 fps. Not a whole lot to even considering paying the premium for faster memory in my opinion atleast, hence why I canceled my 3600 order and ordered 3200 instead for more than $100 cheaper.
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Old 17-10-20, 11:21 AM
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Quote:
Originally Posted by Dawelio View Post
I looked at GamersNexus video on this matter the other day, and the difference between 3200MHz and 3600MHz, with different timings, was an average 3 fps. Not a whole lot to even considering paying the premium for faster memory in my opinion atleast, hence why I canceled my 3600 order and ordered 3200 instead for more than $100 cheaper.
Yeah, that's what I thought. From what I remember seeing, faster memory isn't worth it given the looser timings that come along with it. I bought Samsung B-die 3200 CL14 memory back when Zen 1 first came out, and while I've had boot loop issues due to a poor motherboard BIOS and Zen bugs, that memory configuration still seems to perform on par with 3600 CL16 or 3800 CL18. And I imagine it should perform around the same as 4000 CL19/20. Maybe if you had a really good stick of 3600Mhz memory and could tighten the timings yourself to close to CL14 or lower, that would be ideal. But it terms of stock performance, high speed kits aren't the be-all and end-all.
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Old 17-10-20, 11:52 AM
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Quote:
Originally Posted by AngryGoldfish View Post
Yeah, that's what I thought. From what I remember seeing, faster memory isn't worth it given the looser timings that come along with it. I bought Samsung B-die 3200 CL14 memory back when Zen 1 first came out, and while I've had boot loop issues due to a poor motherboard BIOS and Zen bugs, that memory configuration still seems to perform on par with 3600 CL16 or 3800 CL18. And I imagine it should perform around the same as 4000 CL19/20. Maybe if you had a really good stick of 3600Mhz memory and could tighten the timings yourself to close to CL14 or lower, that would be ideal. But it terms of stock performance, high speed kits aren't the be-all and end-all.
Don’t forget about the money aspect as well, faster memory is more expensive and when talking faster timings, that is the real one that takes the expensive part way further.
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Old 17-10-20, 11:57 AM
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Originally Posted by Dawelio View Post
Don’t forget about the money aspect as well, faster memory is more expensive and when talking faster timings, that is the real one that takes the expensive part way further.
That depends, and sometimes can be a myth.

Faster RAM is not always more expensive. Sometimes older RAM (notably 3200) becomes more expensive when stock is lower. When I got my 4133 RAM it was cheaper than 3600. I guess they hike the prices on whatever is popular, and do sales on what isn't selling.

Now obviously at the time I had no idea Ryzen would not run 4133 RAM. However, it was £120 for 16gb and a decent 3600 kit at that time was £140.

However, with lots of manual tweaking I was able to get it to 3633 or so, with CL14 timings.

Now in gaming? yes, 3200 RAM with low timings works almost as well. However, it's not always all about gaming. If you, for example, run the memory bandwidth test in AIDA 64 each time you tweak you can see the difference. It would make much more of a difference to something that is heavily memory bandwidth limited, for example. But for raw gaming? yeah, 3200 low timings is great.

Like the other day for example I was going to buy some 3000 RAM for my new TR build, but it cost more than 3200.
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