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DDR5-6000 Memory is the Sweet Spot For AMD Ryzen 7000 Zen 4 CPUs (update)
AMD's Ryzen 7000 Zen 4 CPUs appear to have DDR5-6000 as their sweet spot, allowing for a 1:1 IFC ratio. A 1:1 ratio indicates that the memory operates at the same frequency as the memory controller on the CPU, which should provide the best-case situation.
Intel has divided the memory ranks with Alder into two categories: a 2:1 mode known as Gear 2 that is the default for DDR5, and a 4:1 variant known as Gear 4. A 1:1 ratio has the advantage of allowing for reduced latencies and a balanced speed. In contrast, a greater ratio allows for better overclocking and quicker data transfer rates but also results in worse latencies.
- AMD Ryzen 3000 "Zen 2" Sweet Spot - DDR4-3800
- AMD Ryzen 5000 "Zen 3" Sweet Spot - DDR4-4000
- AMD Ryzen 7000 "Zen 4" Sweet Spot - DDR5-6000
DDR5-6000 for AMD Ryzen 7000 "Zen 4" CPUs already sounds amazing for AM5, with a default to DDR5-5600. Higher frequency DIMMs are supported, however, if you exceed the DDR5-6000 limit, you will be forced to use a 1:2 IFC. DDR5-6400 operating at 1:2 is said to offer poor results and is not advised if you want better gaming performance.
Update:
AMD announced DDR5-6000 as the "sweetspot" memory overclock for their next Ryzen 7000 "Zen 4" processors in its Discord AMA. In AMD language, a sweet spot frequency is an inflection of performance, stability, cost, and ease. AMD's Robert Hallock, who led the Discord AMA, suggested that FClk be left undisturbed at "Auto" for the best results. Memory overclocking yields lesser results with dual-rank DIMMs, or two DIMMs per memory channel, as with both AMD and Intel currently. Some of the AMD EXPO-certified DIMMs launched in recent days use memory clocks higher than DDR5-6000.
Team Group Adds T-Force Delta RGB in DDR5-6600 and DDR5-6000 CL30 to lineup - 05/25/2022 07:55 AM
TEAMGROUP is proud to announce the release of two new specification upgrades of T-FORCE DELTA RGB DDR5 Gaming Memory. The overclocking RAM comes in a high-speed variant clocking in at 6,600 MHz and a ...
DDR5-6000 memory with EPIC-X RGB heatsink from PNY - 05/09/2022 06:30 PM
PNY Technologies introduced the DDR5-6000 memory XLR8 DDR5 6000MHz MAKO RGB with an aluminum heat sink....
G.Skill Launches 2x32GB DDR5-6000 CL30 64GB Memory Kit - 03/30/2022 09:10 AM
SKILL is delighted to announce the launch of a high-capacity, ultra-low-latency DDR5-6000 CL30 64 GB (32 GB x2) overclocked performance memory kit under the Trident Z5 family, designed for the latest ...
Joao Pott
Junior Member
Posts: 6
Joined: 2022-08-10
Junior Member
Posts: 6
Joined: 2022-08-10
#6040937 Posted on: 08/10/2022 04:50 PM
Sure. My current DDR4 kit is 3600 CL14. The best DDR5 I can buy is either 6000 CL30 or 5600 CL28. The "total latency" is almost 30% worse.
This will be a horrible "upgrade", especially in Unreal Engine games that spend lots of time chasing pointers.
Maybe I need to wait another year for good DDR5 to appear...
I think you may have a point... I'll wait for trusted reviews comparing the latencies of available DDR5 kits to see in the real world what the impact is, especially in games, which is when I need hardware the most these days... for my productivity (streaming production) - Vmix, video editing - Premiere, AF, etc - and Office apps) it doesn't affect me to have high latency memory kit (like cl36) ...
Sure. My current DDR4 kit is 3600 CL14. The best DDR5 I can buy is either 6000 CL30 or 5600 CL28. The "total latency" is almost 30% worse.
This will be a horrible "upgrade", especially in Unreal Engine games that spend lots of time chasing pointers.
Maybe I need to wait another year for good DDR5 to appear...
I think you may have a point... I'll wait for trusted reviews comparing the latencies of available DDR5 kits to see in the real world what the impact is, especially in games, which is when I need hardware the most these days... for my productivity (streaming production) - Vmix, video editing - Premiere, AF, etc - and Office apps) it doesn't affect me to have high latency memory kit (like cl36) ...
JamesSneed
Senior Member
Posts: 1677
Joined: 2017-02-14
Senior Member
Posts: 1677
Joined: 2017-02-14
#6040943 Posted on: 08/10/2022 05:08 PM
but the bandwidth is a lot higher
what is preferred depends on the game really
for example asetto runs great on 5800x3d and likes low latency
https://www.purepc.pl/test-pamieci-ram-ddr5-g-skill-trident-z5-rgb-6000-mhz-cl36-z-procesorem-intel-core-i9-12900k-najszybsza-kombinacja-na-swiecie?page=0,24
cyberpunk prefers more cores and higher bandwidth
https://www.purepc.pl/test-pamieci-ram-ddr5-g-skill-trident-z5-rgb-6000-mhz-cl36-z-procesorem-intel-core-i9-12900k-najszybsza-kombinacja-na-swiecie?page=0,27
mind you 12900k runs even 5200 in 1:2 mode while 3800 ddr4 runs 1:1
6000 or even 5400 in 1:1 will be a game changer let's hope it's true
You will get both with the 7800x3d.
but the bandwidth is a lot higher
what is preferred depends on the game really
for example asetto runs great on 5800x3d and likes low latency
https://www.purepc.pl/test-pamieci-ram-ddr5-g-skill-trident-z5-rgb-6000-mhz-cl36-z-procesorem-intel-core-i9-12900k-najszybsza-kombinacja-na-swiecie?page=0,24
cyberpunk prefers more cores and higher bandwidth
https://www.purepc.pl/test-pamieci-ram-ddr5-g-skill-trident-z5-rgb-6000-mhz-cl36-z-procesorem-intel-core-i9-12900k-najszybsza-kombinacja-na-swiecie?page=0,27
mind you 12900k runs even 5200 in 1:2 mode while 3800 ddr4 runs 1:1
6000 or even 5400 in 1:1 will be a game changer let's hope it's true
You will get both with the 7800x3d.
southamptonfc
Senior Member
Posts: 2577
Joined: 2006-04-10
Senior Member
Posts: 2577
Joined: 2006-04-10
#6040967 Posted on: 08/10/2022 06:19 PM
Sure. My current DDR4 kit is 3600 CL14. The best DDR5 I can buy is either 6000 CL30 or 5600 CL28. The "total latency" is almost 30% worse.
This will be a horrible "upgrade", especially in Unreal Engine games that spend lots of time chasing pointers.
Maybe I need to wait another year for good DDR5 to appear...
"Total latency", has increased in every generation of DDR. It hasn't in any way made PCs slower. The greatly increased bandwidth makes up for the worse latency.
Memory speed is less important than GPU or CPU performance. Benchmarks show that if you're running 4K, very fast RAM makes no difference.
Sure. My current DDR4 kit is 3600 CL14. The best DDR5 I can buy is either 6000 CL30 or 5600 CL28. The "total latency" is almost 30% worse.
This will be a horrible "upgrade", especially in Unreal Engine games that spend lots of time chasing pointers.
Maybe I need to wait another year for good DDR5 to appear...
"Total latency", has increased in every generation of DDR. It hasn't in any way made PCs slower. The greatly increased bandwidth makes up for the worse latency.
Memory speed is less important than GPU or CPU performance. Benchmarks show that if you're running 4K, very fast RAM makes no difference.
Fediuld
Senior Member
Posts: 769
Joined: 2016-10-04
Senior Member
Posts: 769
Joined: 2016-10-04
#6040981 Posted on: 08/10/2022 06:48 PM
Zen3 can do 2000Mhz if you have 4000Mhz ram and you don't try to overclock any lesser ram.(5900X with 4000Mhz ram using atm)
Zen3 found in APUs can do 2500Mhz Infinity Fabric (DDR4-5000 RAM is possible on a 5700G).
Zen3+ (Ryzen 6000) does 2400Mhz Infinity Fabric (DDR5-4800, when we get faster SODDIMs we should know if can be pushed). We don't know the Infinity Fabric speed when LPDDR5-6400Mhz is been used. (is supported).
Zen2 could do 1900-1933Mhz Infinity Fabric (my 3900X used the old 3600C16 kit at 3800C14)
Zen1 could do 1800mhz Infinity Fabric. (my 1800X run with 3600C16 ram on 1:1 since April 2017)
zen3 could not even reach 2000mhz IF.
Zen3 can do 2000Mhz if you have 4000Mhz ram and you don't try to overclock any lesser ram.(5900X with 4000Mhz ram using atm)
Zen3 found in APUs can do 2500Mhz Infinity Fabric (DDR4-5000 RAM is possible on a 5700G).
Zen3+ (Ryzen 6000) does 2400Mhz Infinity Fabric (DDR5-4800, when we get faster SODDIMs we should know if can be pushed). We don't know the Infinity Fabric speed when LPDDR5-6400Mhz is been used. (is supported).
Zen2 could do 1900-1933Mhz Infinity Fabric (my 3900X used the old 3600C16 kit at 3800C14)
Zen1 could do 1800mhz Infinity Fabric. (my 1800X run with 3600C16 ram on 1:1 since April 2017)
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Senior Member
Posts: 8164
Joined: 2020-08-03
Sure. My current DDR4 kit is 3600 CL14. The best DDR5 I can buy is either 6000 CL30 or 5600 CL28. The "total latency" is almost 30% worse.
This will be a horrible "upgrade", especially in Unreal Engine games that spend lots of time chasing pointers.
Maybe I need to wait another year for good DDR5 to appear...
but the bandwidth is a lot higher
what is preferred depends on the game really
for example asetto runs great on 5800x3d and likes low latency
https://www.purepc.pl/test-pamieci-ram-ddr5-g-skill-trident-z5-rgb-6000-mhz-cl36-z-procesorem-intel-core-i9-12900k-najszybsza-kombinacja-na-swiecie?page=0,24
cyberpunk prefers more cores and higher bandwidth
https://www.purepc.pl/test-pamieci-ram-ddr5-g-skill-trident-z5-rgb-6000-mhz-cl36-z-procesorem-intel-core-i9-12900k-najszybsza-kombinacja-na-swiecie?page=0,27
mind you 12900k runs even 5200 in 1:2 mode while 3800 ddr4 runs 1:1
6000 or even 5400 in 1:1 will be a game changer let's hope it's true