Author Topic: An article on Static and Dynamic RAM.  (Read 3111 times)

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Offline Peter TaylorTopic starter

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An article on Static and Dynamic RAM.
« on: June 17, 2022, 02:20:02 pm »
Static RAM is significantly faster than Dynamic RAM.
Dynamic RAM is significantly cheaper to manufacture than Static RAM.
I would rather pay significantly more for a fast computer with Static RAM, but as a consumer, I am not given that option.
Manufacturers would rather sell me an expensive slow computer with a large profit margin, than a useful fast computer with a low profit margin.
« Last Edit: June 17, 2022, 02:30:54 pm by Peter Taylor »
 

Offline rob77

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Re: An article on Static and Dynamic RAM.
« Reply #1 on: June 17, 2022, 02:35:48 pm »
you do have static RAM in your computer it's the registers in the CPU and also the cache :) and trust me you would definitely not want to pay for a 16GByte of static RAM ;)
 

Offline Ed.Kloonk

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Re: An article on Static and Dynamic RAM.
« Reply #2 on: June 17, 2022, 02:44:30 pm »
Another thing to appreciate is just how valuable the CPU's cache memory is, which speeds up tasks enormously.

Additionally, the memory speed limit depends on the memory bus speed. Unless you are running memory that is a slower speed than the max bus speed, what ever the technology the ram is, the speed is governed by the speed of the memory bus.

iratus parum formica
 

Offline Peter TaylorTopic starter

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Re: An article on Static and Dynamic RAM.
« Reply #3 on: June 17, 2022, 03:45:51 pm »
I would rather a computer that had no DRAM. Internal or external. Static RAM also uses significantly more space. I would rather use a fast computer that used more space, and I would happily pay the price for the speed (of course this is something that I should not pay extra for. This should be standard).
« Last Edit: June 17, 2022, 03:53:31 pm by Peter Taylor »
 

Online MK14

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Re: An article on Static and Dynamic RAM.
« Reply #4 on: June 17, 2022, 03:47:21 pm »
Is this a BOT?
 
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Online ataradov

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Re: An article on Static and Dynamic RAM.
« Reply #5 on: June 17, 2022, 03:50:13 pm »
If you scale SRAM to GB capacity, it will be slower than DRAM of the same capacity.

And yes, I suspect this is a bot.
Alex
 
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Offline Peter TaylorTopic starter

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Re: An article on Static and Dynamic RAM.
« Reply #6 on: June 17, 2022, 03:56:24 pm »
i am not a roooobooot
 

Offline Bassman59

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Re: An article on Static and Dynamic RAM.
« Reply #7 on: June 17, 2022, 03:57:50 pm »
I would rather a computer that had no DRAM. Internal or external. Static RAM also uses significantly more space. I would rather use a fast computer that used more space, and I would happily pay the price for the speed (of course this is something that I should not pay extra for. This should be standard).

Sounds like you have Elon Musk-level money.
 

Offline Peter TaylorTopic starter

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Re: An article on Static and Dynamic RAM.
« Reply #8 on: June 17, 2022, 04:01:03 pm »
Speaking of A Space Odyssey, 2001.
Quote: 'open the pod door HAL ... no Dave, I cannot do that'.  :-DD
« Last Edit: June 17, 2022, 04:02:49 pm by Peter Taylor »
 

Online MK14

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Re: An article on Static and Dynamic RAM.
« Reply #9 on: June 17, 2022, 04:04:02 pm »
Speaking of A Space Odyssey, 2001.
Quote: 'open the pod door HAL ... no Dave, I cannot do that'  :-DD

I suspect one of three things, as well as BOT,
or a returned, recently banned member,
here:  https://www.eevblog.com/forum/chat/i-have-found-the-answer-to-life-the-universe-and-everything/msg4191472/#msg4191472

Or multi-accounting, as they expect their main account is going to get banned, anytime soon.

All or most of their threads/posts, don't really seem right.
 

Offline wraper

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Re: An article on Static and Dynamic RAM.
« Reply #10 on: June 17, 2022, 04:07:59 pm »
i am not a roooobooot
Yet you start multiple threads about nonsense. FYI static RAM sticks instead of DRAM makes no sense. It would be (very) extremely expensive and performance would be completely wasted due to slow interface. With current technology static RAM only makes sense within CPU as cache and which is how it is actually done.
« Last Edit: June 17, 2022, 04:11:05 pm by wraper »
 
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Offline Peter TaylorTopic starter

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Re: An article on Static and Dynamic RAM.
« Reply #11 on: June 17, 2022, 04:09:56 pm »
'Sounds like you have Elon Musk-level money'. I wish. ;)
 

Offline wraper

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Re: An article on Static and Dynamic RAM.
« Reply #12 on: June 17, 2022, 04:16:24 pm »
I would rather pay significantly more for a fast computer with Static RAM, but as a consumer, I am not given that option.
I have a real shocker for you. Big buck corporations have no such option either.
 
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Offline Peter TaylorTopic starter

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Re: An article on Static and Dynamic RAM.
« Reply #13 on: June 17, 2022, 04:18:49 pm »
In what possible conceivable way can SRAM be slower than DRAM, when it is about a thousand times faster ?
 

Offline wraper

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Re: An article on Static and Dynamic RAM.
« Reply #14 on: June 17, 2022, 04:22:12 pm »
The only thing I have to complain about consumer RAM, there is no ECC option as standard (but it sort of works on some consumer HW), and more often than not RAM sold with overclocked ratings.
 
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Online MK14

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Re: An article on Static and Dynamic RAM.
« Reply #15 on: June 17, 2022, 04:32:23 pm »
The only thing I have to complain about consumer RAM, there is no ECC option as standard (but it sort of works on some consumer HW), and more often than not RAM sold with overclocked ratings.

I think the real issue/problem, is that the vast bulk of PC (and other devices) users, probably don't know what data corruption/rot is, have never heard of ECC, or have any idea, that DRAM does (in theory and usually in practice), occasionally bit-flip (and worse), the memory contents.

Hence there is no real demand or market for it, in the consumer space.

Whereas, because (in at least some cases), the head of IT (and similar), orders computers for businesses, and they tend to be at least business class.  It is much more common for them to go for ECC, and know/understand what it is, and why it is important/needed, in many (if not all) cases.
 

Online ataradov

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Re: An article on Static and Dynamic RAM.
« Reply #16 on: June 17, 2022, 04:37:34 pm »
In what possible conceivable way can SRAM be slower than DRAM, when it is about a thousand times faster ?
Because SRAM cell has ~6 times the area compared to the DRAM cell. For a large capacity memory signal propagation delays would start hitting hard.

Look at how much effort ges into caches in modern CPUs.  L1 cache size is basically limited by the propagation delays. It will not grow any more in size.
Alex
 
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Offline wraper

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Re: An article on Static and Dynamic RAM.
« Reply #17 on: June 17, 2022, 04:40:34 pm »
I think the real issue/problem, is that the vast bulk of PC (and other devices) users, probably don't know what data corruption/rot is, have never heard of ECC, or have any idea, that DRAM does (in theory and usually in practice), occasionally bit-flip (and worse), the memory contents.

Hence there is no real demand or market for it, in the consumer space.

Whereas, because (in at least some cases), the head of IT (and similar), orders computers for businesses, and they tend to be at least business class.  It is much more common for them to go for ECC, and know/understand what it is, and why it is important/needed, in many (if not all) cases.
IMHO the only major reason is that manufacturers don't want to blur the line between consumer and server/workstation HW since in latter much higher price can be set. For example Intel allows ECC on some of their consumer desktop CPUs... which are on the bottom end, so cannot cannibalize market of high priced systems.
 

Offline Siwastaja

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Re: An article on Static and Dynamic RAM.
« Reply #18 on: June 17, 2022, 04:41:39 pm »
In what possible conceivable way can SRAM be slower than DRAM, when it is about a thousand times faster ?

You are missing the fact that technology is COMPLEX and DIFFICULT!

There is no such simple concept as "DRAM is slow" and "SRAM is fast", that's a huge simplification.

But in real world, bicycle wins over a Ferrari if you need to drive in a tunnel 1 meter (3 feet) wide.

Similarly, each SRAM memory cell is physically large, and consumes power. You can put a million together, but if you try to put billion together, they will spread out over large area, and getting data in/out of it will slow down.

Besides, DRAM is not 1000 times slower at all. DRAM has pretty decent burst read speed - you can read consecutive bytes in order very fast.

Computer scientists and engineers have worked out pretty decently optimized compromise, which utilizes the good features of SRAM and DRAM, by combining them together. DRAM provides bulk of the memory - because a lot of memory is needed - and SRAM cache helps increase performance.
 
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Online ebastler

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Re: An article on Static and Dynamic RAM.
« Reply #19 on: June 17, 2022, 04:49:18 pm »
i am not a roooobooot

Alright, I believe you. Most likely you are for real, posting under your real name, and you have recently established "Pete's Electronic Workshop" in Queensland, as you stated in some other post. Based on your posting activity here, the business is not keeping you fully occupied yet -- which is fine, of course.

But what do you expect to gain by posting these lecturing "articles" here? We have seen nonsensical ones, technically wrong ones, and now a blindingly obvious one. I have no idea what you hope to achieve by these, but they are not going to get you any "streed cred" on this forum.

If your intent should be to establish yourself as a valued member of the forum, I recommend that you look for posts from others where you can provide meaningful answers. That's where you can add value. The declamatory "articles" don't help anyone, and certainly don't help yourself.
 
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Online MK14

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Re: An article on Static and Dynamic RAM.
« Reply #20 on: June 17, 2022, 05:03:48 pm »
IMHO the only major reason is that manufacturers don't want to blur the line between consumer and server/workstation HW since in latter much higher price can be set. For example Intel allows ECC on some of their consumer desktop CPUs... which are on the bottom end, so cannot cannibalize market of high priced systems.

I agree, that is a significant factor.  But is still only part of the story.

If I understand things correctly.  The original IBM PCs (at some point), did actually have some kind of parity memory as standard, because of perceived bit-flip issues, with ancient technology DRAM chips of the time, where a theory of Alpha-radiation in the chip packaging (possibly cosmic-rays, as well), were/would cause a number of bit-flips.
 

Offline Zoli

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Re: An article on Static and Dynamic RAM.
« Reply #21 on: June 17, 2022, 05:10:58 pm »
"There is always a well-known solution to every human problem—neat, plausible, and wrong" - Murphy.
In this case: random access vs sustained transfer - and all the working tricks to hide the difference. Make a bank of SRAM in the same way as is done with DRAM - now you have 9-12-12-23(access) instead of 16-20-20-38(access) at the 1000Xtimes of the price(all of the numbers are fictional, but in the proper ballpark) to start - is worth?
Of course, if you manage to overtake the whole DRAM market, you can supply those 9-12-12-23 SRAM sticks @6Xcurrent price :-DD :-DD :-DD
 

Online Benta

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Re: An article on Static and Dynamic RAM.
« Reply #22 on: June 17, 2022, 07:33:34 pm »
"There is always a well-known solution to every human problem—neat, plausible, and wrong" - Murphy.

Wrong: H. L. Mencken, 1920. Later paraphrased by others (not Murphy, though).

 

Offline Zoli

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Re: An article on Static and Dynamic RAM.
« Reply #23 on: June 17, 2022, 07:53:09 pm »
"There is always a well-known solution to every human problem—neat, plausible, and wrong" - Murphy.
Wrong: H. L. Mencken, 1920. Later paraphrased by others (not Murphy, though).
You've caught me; I was lazy.
Now, do you have anything to add to the SRAM vs. DRAM discussion?
 

Offline SiliconWizard

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Re: An article on Static and Dynamic RAM.
« Reply #24 on: June 17, 2022, 08:05:34 pm »
If you scale SRAM to GB capacity, it will be slower than DRAM of the same capacity.

Yup. And:
* The cost (area) of several GB of SRAM, the OP probably doesn't want to know. Completely unpractical.
* With modern multi-level caching schemes, this would make almost no difference whatsoever, at least for general-purpose computing.

And yes, I suspect this is a bot.

I dunno. :-DD
 


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