Memory speed question

ChungKingCanSuckIt

ChungKingCanSuckIt

ChungKingCanSuckIt

Associate
Joined
26 Sep 2022
Posts
87
Location
Usa
Bought parts for a new build.. Core Ultra 7 265k. I heard 2 sticks of memory are better to run instead of 4. My current system has 64GB, and I kind of wanted my new system to have more memory. I game (but nothing that intense mostly Counter Strike 2), occasionally I edit videos in Adobe Premiere and photos in Photoshop/Illustrator, so I wanted more memory.

I got all the parts as a Christmas gift, so I got the cheaper memory. I am wondering if I need to get better memory? Anything faster I'll have to pay out of my pocket if it costs more.

I purchased Corsair Vengeance 2x48GB DDR-5600 CL40.

I could return it and get Corsair 2x48GB DDR5-6800 CL40 or G.Skill 6800 at CL34. Looking the G.Skill I'll have to chip in like $80 or so and then wait longer.

I have no plans to overclock my system. I just want it to run stable and be decent. I'm not interested that I have the absolute fastest thing possible.
 
Last edited:
The cl number is the latency, so lower cl should be faster. I.e a cl36 should be faster than a cl40, but whether you would notice that in real world terms I don't know.

Same with the mega transfers , a 6000 memory should be faster than a 5600, again, how much difference you see in real world I couldn't say
 
Erm, its very difficult to say. intel does benefit from faster memory, but "by how much" depends very much on the applications you are running.

If you want "trouble free" then I would go for DDR5-6400 CL32.

Probably the best thing to do is to aim for that and go with whatever you can find that is close, available in a 2x kit, and the cost is within reason.

At OCUK that would be

Corsair Vengeance 96GB (2X48GB) DDR5 PC5-44800C32 6400MHz Dual Channel Kit - Black​

​

or £50 less for..

Corsair Vengeance EXPO/XMP 96GB (2X48GB) DDR5 PC5-48000C30 6000MHz Dual Channel Kit​

 
ChungKingCanSuckIt said:
I purchased Corsair Vengeance 2x48GB DDR-5600 CL40.

I could return it and get Corsair 2x48GB DDR5-6800 CL40 or G.Skill 6800 at CL34. Looking the G.Skill I'll have to chip in like $80 or so and then wait longer.

I have no plans to overclock my system. I just want it to run stable and be decent. I'm not interested that I have the absolute fastest thing possible.
Click to expand...
I'd just keep what you have. You said you're fine with stability and don't mind a bit of performance loss, so that's fine.
 
ChungKingCanSuckIt said:
Decided to get 6600 that runs at CL32. Someone here said it and I found it elsewhere where they say you should be using 6400 or better for the new processor.
Click to expand...

Isn't that the recommended base for CUDIMMs NOT ordinary DIMMs?

Anyway, the 6600 should work. I read somewhere that they "should" work up to 8000 without CUDIMMs. It's just a question of buying something safe at a reasonable price.
 
Last edited:
ChungKingCanSuckIt said:
Decided to get 6600 that runs at CL32. Someone here said it and I found it elsewhere where they say you should be using 6400 or better for the new processor.
Click to expand...
Your call, but Puget did an article on the previous gen CPUs (DDR5 & content creation) and the difference was like 3% between 5600 C46 and 6400 C32 in Photography and 4.5% in video editing. I'd at least wait until the Core Ultra CPUs are more settled with BIOS and software updates and we know what the optimum memory is for them. Replacing a kit of equal capacity with a kit of equal capacity is hardly ever worth it unless the kit is mega slow.
 
Last edited:
SpellowHouse said:
Isn't that the recommended base for CUDIMMs NOT ordinary DIMMs?

Anyway, the 6600 should work. I read somewhere that they "should" work up to 8000 without CUDIMMs. It's just a question of buying something safe at a reasonable price.
Click to expand...

Not sure. I found it hard to locate CUDIMM's. Anyway, the order didn't ship yet I was able to cancel it and get 6600 CL32. I'll be happier knowing I didn't buy bottom of the barrel memory this time.
 
Tetras said:
Your call, but Puget did an article on the previous gen CPUs (DDR5 & content creation) and the difference was like 3% between 5600 C46 and 6400 C32 in Photography and 4.5% in video editing. I'd at least wait until the Core Ultra CPUs are more settled with BIOS and software updates and we know what the optimum memory is for them. Replacing a kit of equal capacity with a kit of equal capacity is hardly ever worth it unless the kit is mega slow.
Click to expand...
Thanks. I ended up cancelling the memory I had since it's almost bottom of the speed tier.. 4800, 5200, then 5600.. at least I'll feel slightly better I purchased something slightly better as normally I just go for the cheapest memory that'll fit my build.
 
No worries, as long as you are happy.

Intel CPUs do prefer faster RAM in general but RAM is complicated since there are a few factors that influence real world performance.

Throughput is a factor of timings and speed so faster isn't always better (it usually is) since a bad combination of timings and speed can hamper performance. e.g., 5600 MT/s RAM with tight timings might give very low latency and improve performance overall.

I would happily go with 6600 MT/s RAM for Intel but just be mindful that the lower the latency, the harder the RAM is to run as it puts more stress on the CPU's memory controller (IMC).

Update your BIOS as a first action with your new build.
 
You must log in or register to reply here.
Back
Top Bottom