I bought 32gb 5600MHz cl46 ddr5 ram on Amazon 💀💀💀

Discussion

Will it be noticeably slow? Will I regret it?

67%

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Batyalas

Just please refund it and get faster RAM. It will last you the rest of the next few generations.

imaginary_num6er

Yeah but “sweet spot” for Zen 4 is 6400Mhz /s

Batyalas

I didn't realize 6400 CL32 was actually cheaper than 6000 CL30. Thank you for your sarcasm.

DryClothes2894

Actually 8000 is because it allows the FCLK and UCLK to synchronize at 2000, which offers the same latency reduction benefits that it did on Zen 3 when you'd run the FCLK and UCLK in sync at like 1800 or 1900

EventPractical9393

Getting 8000 to post would be a miracle on AM5

DryClothes2894

Actually its totally doable, many people run it that way already, and its easier on the memory controller than dumping SOC voltage into it to make gear 1 stable at 6200-6400.

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This Karhu run is a bit short since it was just me testing the temperature of the DIMMs under sustained load, but this already has passed plenty of other stress tests like Y-Cruncher VT3, of which it did about 6 hours.

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Pablo

I know I would regret it if I bought 5600c46 that would probably drop fps by 10-20%. I never got why people buy slow ram anyways. It's not like you're saving much compared to 6000c30

EventPractical9393

It's more like 5% in most scenarios

A 4070 is not so blazing fast that a 7800X3D is gonna be holding it back with slow ram

If you have a 4080/4090 you can afford fast ram from the get go

Even if you have a non V-Cache CPU performance gain isn't going to be night and day, same goes for intel CPUs

But the price difference between cheap slow ram and something half decent is low enough it's almost always better to spend on the good stuff

But that 10-20% performance figure is whack

Odd-Understanding-67

I would return it and get CL30.