this post was submitted on 22 May 2025
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[–] [email protected] 4 points 1 hour ago

8gb of system ram is enough for a low end system (especially with Linux) and 8gb of vram is enough for 1080p gaming.

[–] [email protected] 1 points 1 hour ago

RAM on phones is ok, though.

[–] [email protected] 3 points 2 hours ago (2 children)

What does 1GB of cache look like?

[–] [email protected] 3 points 1 hour ago (1 children)
[–] [email protected] 2 points 1 hour ago

That’s a lot of cache! For a new battery :P

[–] [email protected] 1 points 1 hour ago (1 children)
[–] [email protected] 6 points 3 hours ago (2 children)

I always thought it would be funny running an os from an usb stick.

Never would I have thought that there would be storage in the size of a stick exceeding the default configuration of a desktop pc.

2 TB in one small nvme drive?! Wtf. Amazing but also crazy.

[–] [email protected] 4 points 1 hour ago

You should check out Linux live USBs from nearly 2 decades ago then.

[–] [email protected] 4 points 2 hours ago

When my dad first saw an nvme drive he had to triple check what he was looking at BC in his old 70s computer brain there's no fucking way something so small and unmoving can hold so much data, read/write it so fast, and all for a relatively cheap price.

[–] [email protected] 3 points 3 hours ago

8GB of Atari 2600 games

[–] [email protected] 2 points 4 hours ago (1 children)

Generally there’s a reverse relationship between size and speed. A 8gb cache would also be super slow thus defeating the purpose of the cache. If it were so easy every cpu would have a huge cache

[–] [email protected] 1 points 2 hours ago

Not really, if you're putting that size on the physical chip it will be fast because it's close by. It's just that we can't fit that much on a chip now.

[–] [email protected] 10 points 4 hours ago (3 children)

The first hard drive I got had 20MB and it was glorious.

[–] [email protected] 1 points 2 hours ago

I had a conspiracy theory that it's trying to communicate with me using morse code, but I was too lazy to learn it

[–] [email protected] 3 points 2 hours ago (1 children)

The first one I used was 5MB. The OS on the machine (a CP/M version) didn't know how to handle it, so it was partitioned as lots and lots of floppies. Not very useful.

[–] [email protected] 1 points 1 hour ago* (last edited 1 hour ago)

How about the other way around?

[–] [email protected] 4 points 3 hours ago

So I can boot up without a disk now?

[–] [email protected] 4 points 5 hours ago* (last edited 5 hours ago) (1 children)

8GB of (internet) bandwidth.

[–] [email protected] 1 points 2 hours ago

8GB/s, or 8GB per month.

[–] [email protected] 7 points 8 hours ago (1 children)
[–] [email protected] 2 points 4 hours ago

I'm on 2 lol

[–] [email protected] 8 points 9 hours ago

I remember when this applied to 8kB.

[–] [email protected] 3 points 10 hours ago

I have an 8gb ATA storage drive on my desk… wonder if it stills works

[–] [email protected] 18 points 10 hours ago (1 children)

Still remember my first 500MB drive, thought I would never manage to fill it up

[–] [email protected] 7 points 9 hours ago (1 children)

I remember being thrilled to move from floppies to a 16mb flash drive for my school assignments, even if I did have to constantly download and reinstall the USB Mass Storage drivers for the Windows 1998 sp2 computers in the library which reset every night. And the transfer speed was SLOW.

The fact that you can get a terabyte flash drive now, which can hold 62,500 of my school assignment drives, is mind blowing to me.

[–] [email protected] 1 points 1 hour ago

I always wanted the zip drives with 250mb capacity.

[–] [email protected] 3 points 12 hours ago

dying in 8gb unified ram intensifies

[–] [email protected] 20 points 13 hours ago (1 children)

Noone will ever need more than 640k of RAM

[–] [email protected] 7 points 12 hours ago (1 children)
[–] [email protected] 1 points 17 minutes ago

Achshully, you're right

[–] [email protected] 21 points 13 hours ago (1 children)
[–] [email protected] 9 points 12 hours ago

What it feels like moving from x86 to ARM

[–] [email protected] 14 points 14 hours ago (2 children)

The first computer I bought had eight megs of RAM.

[–] [email protected] 4 points 11 hours ago

I remember being thrilled with a 20 meg scsi hard drive I got as a kid.

[–] [email protected] 10 points 13 hours ago

Mine got upgraded to a full meg.

[–] [email protected] 13 points 15 hours ago (1 children)

The meme don't make sense. An SRAM cache of that size would be so slow that you would most likely save clock cycles reading directly from RAM an not having a cache at all...

[–] [email protected] 25 points 14 hours ago (1 children)

Slow? Not necessarily.

The main issue with that much memory is the data routing and the physical locality of the memory. Assuming you (somehow) could shrink down the distance from the cache to the registers and could have a wide enough data line/request lines you can have data from such a cache in ~4 cycles (assuming L1 and a hit).

What slows down memory for L2 is the wider address space and slower residence checks. L3 gets a bit slower because of even wider address spaces but also it has to deal with concurrency issues since it's shared among cores. It also ends up being slower because it physically has to be further away from the cores due to it's size.

If you ever look at a CPU die, you'll see that L1 caches are generally tiny and embedded right into the center of the processor. L2 tends to be bolted onto the sides of the physical cores. And L3 tends to be the largest amount of silicon real estate on a CPU package. This is all what contributes to the increasing fetch performance for each layer along with the fact that you have to check the closest layers first (An L3 hit, for example, means that the CPU checked L1 and L2 and failed at both which takes time. So L3 access will always be at least the L1 + L2 times).

[–] [email protected] 4 points 13 hours ago

I agree. When evaluating cache access latency, it is important to consider the entire read path rather than just the intrinsic access time of a single SRAM cell. Much of the latency arises from all the supporting operations required for a functioning cache, such as tag lookups, address decoding, and bitline traversal. As you pointed out, implementing an 8 GB SRAM cache on-die using current manufacturing technology would be extremely impractical. The physical size would lead to substantial wire delays and increased complexity in the indexing and associativity circuits. As a result, the access latency of such a large on-chip cache could actually exceed that of off-chip DRAM, which would defeat the main purpose of having on-die caches in the first place.

[–] [email protected] 11 points 15 hours ago

that much cache could be detrimental to the speed of your CPU

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