C4 emmc speed vs size

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powerful owl
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C4 emmc speed vs size

Post by powerful owl »

Hi, what size emmc are the measurements taken with? 32GB?

https://www.hardkernel.com/shop/odroid-c4/

I'm wondering how much difference there is 16 vs 32GB.

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Re: C4 emmc speed vs size

Post by rooted »

There is a measurable difference the larger the eMMC, I'm sure @odroid can provide more specifics.

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Re: C4 emmc speed vs size

Post by hominoid »

Read/write speeds for different emmc sizes are listed in the wiki.
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powerful owl (Mon Jul 20, 2020 1:22 pm)

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Re: C4 emmc speed vs size

Post by rooted »

hominoid wrote:Read/write speeds for different emmc sizes are listed in the wiki.
Image thanks

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Re: C4 emmc speed vs size

Post by odroid »

We used a 64GB module for measuring the speed on C4.
I think 32GB and 64GB are having a similar read/write performance. But 16GB is slower and 8GB is the slowest one as described in the Wiki page pointed by hominoid.

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Re: C4 emmc speed vs size

Post by powerful owl »

Hi, thanks! The numbers in the wiki for 4k random read/write are half those for the C4, and all about the same regardless of eMMC size. So that suggests that they (the wiki 4k random numbers) are limited by the C2 itself?

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Re: C4 emmc speed vs size

Post by odroid »

Right. C2 eMMC IO throughput must be much slower than C4.
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