DDR5

Cheeep!

 

Will 6400mhz be the base normal for DDR5?
Seems like CPU seems to only officially support max 6400mhz 1:1 clock ratio at the moment

Like the DDR4 - 3200mhz was the normal for a long time.

 

For AMD yes.

 

Looks like Intel's next gen will support to around 10ghz DDR5 (I'm not sure about the 1:1 CPU/RAM clock ratios!).

"Intel Arrow Lake "Core Ultra 200" CPUs to support 8000-10,000 MT/s DDR5 Memory Speed with CUDIMM"

Only problem is with such high frequencies, something most wouldn't consider is the higher chance of signal interference causing RAM errors! Der8auer explains it much better than I ever could..

 

His new video is also very interesting on DDR5 on Intel:

 

I just re-watched that cheers OJR, first time watched I missed the bit about gear ratios on 13th gen. Interesting indeed!

 

Slightly OT, I disagree with him about the colour scheme on the Apex, I think silver looks beautiful.

 

maybe they are better now but they had so many problems that took a lot of BIOS updates to fix

But Expo memory has worked first up so have used that.....

Now am after 64 gb for a 870e Carbon.......not sure what speed to get...6400 0r 6800

Corsair Vengeance 64GB (2x32GB) 6400MHz CL32 DDR5

 

in depth reviews are showing 6400mhz 1:1:1 ratios to be the sweetspot.

it takes 8200mhz and higher to consistently beat it across the board, but at that price point, unless you have a golden sample cpu/motherboard/ram combo, you may as well stick to the lowest latency 6400mhz kit for 99.999% of the performance of a 8200mhz+ kit.

 

But then you're relying on your memory controller being able to run at 3200Mhz, which not all can do.

 

That's what I found out when I had my 9700X. But couple weeks later with an AGESA update, 6400MTs 1:1 was easy & stable to run. So its not all about silicon lottery.

 

while your technically correct, I was responding to will's post, and his on AMD. So if we do some research; read the reviews, watch some youtube videos, examine some graphs, check popular benchmark database sets, or play with some hardware, and you will soon notice;

for the 7*00 series, the vast majority (75%~ish) could do 3000mhz on the controller for 6000mhz 1:1:1
for the 9*00 series, the vast majority (at least 70% found during validation by MB vendors, probably will climb higher over time as more samples are benched and uploaded online) based on current sample data trends)) its looking like, can do 3200mhz memory for 6400mhz 1:1:1

now, if we look at the prices for 6400mhz kits, from relaxed to aggressive timings and compare to 8000mhz +++ whats a fair bit cheaper? 6400mhz kits.

Now, what do we know about getting 7200mhz+ kits stable on AM5? very highly dependent on the motherboard DIMM/traces to the cpu; first and foremost, then IC's on the ram itself. Intel has the same problem but it better at masking it via gear2/3 and smarter caches/branch predictors.

So at the end of the day, common sense would indicate your better off saving the money on the 6400mhz kit, because even if you luck out, and cant do 3200mhz on the controller for 1:1:1, you will be able to do 1:1:2 and enjoy the lower latency, as nothing but benchmarks really benefit the average user from the increased memory bandwidth of the extreme speed kits.

Now if Will.S had the intel platform, the recommendation would change to favor the higher speed kit, as its been shown in reviews/benchmarks, intels platform scales very well with memory bandwidth compared to AMD's.

 

Ummm I have a 7800X3D and Asus X670E Hero. Thanks, I have played.

 

I am sure 6400mhz will be the next standard for DD5 for years to come.
I remember how 3200mhz was DDR4 for donkey years... It was like solid recommendation, then 3600mhz came out and it became gold standard till the end.

 

Which has better memory bandwidth right now for Consumer PC's? AMD or Intel top chips?

 

Whichever platform can run the fastest cudimm's with the lowest latency. So probably Intel atm.

Strix Halo early next year from AMD will probably take the crown though, if you want to include laptops. Its an APU with double membw over standard DDR5 apparently. Should appear in sff's pc's at some point.

But otherwise Apple pwns anything in PC land atm. 4 times faster I think they get up to. On package ram 4tw.