Question Clock speed or latency - which to prioritize?

[true_messiyah]

Hi,

In a post where I asked for a gaming/video editing system I got a wide range of recommendations for RAM:

G.Skill Ripjaws S5 64 GB (2 x 32 GB) DDR5-5600 CL28 Memory
220.89

Patriot Viper Venom 32 GB (2 x 16 GB) DDR5-6400 CL32 Memory
112.38 (*2)

32GB Patriot VIPER VENOM DDR5-7200 DIMM CL34 Dual Kit
109,00 (*2)

Now I'm asking myself a couple of questions.

With pricing roughly the same what's the best compromise between latency and speed?

Does it matter if I use 2 or 4 modules to reach my 64 GB if I never upgrade RAM size in the future, and if so, what's better and why?

I vaguely remember having heard about the possibility to dynamically throttle RAM speed to achieve lower latency when needed. Would that be a chipset feature, RAM dependant or both/else? I'm on B650(E).
Would that be an argument to go for higher clock?

Grateful for any insights.

​

 

[jeremyj_83]

Hi,

In a post where I asked for a gaming/video editing system I got a wide range of recommendations for RAM:

G.Skill Ripjaws S5 64 GB (2 x 32 GB) DDR5-5600 CL28 Memory
220.89

Patriot Viper Venom 32 GB (2 x 16 GB) DDR5-6400 CL32 Memory
112.38 (*2)

32GB Patriot VIPER VENOM DDR5-7200 DIMM CL34 Dual Kit
109,00 (*2)

Now I'm asking myself a couple of questions.

With pricing roughly the same what's the best compromise between latency and speed?

Does it matter if I use 2 or 4 modules to reach my 64 GB if I never upgrade RAM size in the future, and if so, what's better and why?

I vaguely remember having heard about the possibility to dynamically throttle RAM speed to achieve lower latency when needed. Would that be a chipset feature, RAM dependant or both/else? I'm on B650(E).
Would that be an argument to go for higher clock?

Grateful for any insights.

​

You are always better off only doing 2 DIMMs if possible for the desired capacity. Once you go to 4 DIMMs the RAM will have to run at a lower speed.

In terms of speed vs latency they actually go hand in hand. You can have a higher CAS Latency number but the RAM is faster so the overall latency is lower. The problem is there is a point of diminishing returns in the latency department where you spend A LOT more and get little to no return. Current Ryzen 7000 series has the sweet spot for RAM around 6000 - 6400MHz. For the 9000 series it will probably be close to the same.

Here are some suggestions:
PCPartPicker Part List

Memory: Corsair Vengeance 64 GB (2 x 32 GB) DDR5-6400 CL32 Memory (€239.99 @ Corsair DE)
Memory: Kingston FURY Beast 64 GB (2 x 32 GB) DDR5-6000 CL36 Memory (€197.90 @ Alza)
Memory: G.Skill Ripjaws S5 64 GB (2 x 32 GB) DDR5-6400 CL32 Memory (€237.89 @ Alternate)
Memory: Patriot Viper Venom 64 GB (2 x 32 GB) DDR5-6400 CL32 Memory (€226.40 @ Mindfactory)
Memory: Kingston FURY Beast 64 GB (2 x 32 GB) DDR5-6000 CL30 Memory (€211.90 @ Amazon Deutschland)
Total: €1114.08
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2024-07-16 21:30 CEST+0200