celeron performance

[radman3d2]

what is the most ram that can be cashed by a celeron, for the best performance?

[Szech]

Celerons have 128K of full speed on-die level 2 cache.

[Szech]

I've honestly never heard of a computer having -too much- RAM. Of course, I wasn't this deep into computing a couple years ago either. I'm going to assume that it was the chipset that was the limiting factor. Now, it's probably the motherboard that's the limiting factor.

2nd question: What are you doing that needs so much RAM?

[radman3d2]

The computer I have is a laptop, 300MHz w/64Meg of ram and I'd like to upgrade it to 128Meg to get more performance. I have an open slot for this. It is a Dell Inspiron and Dell couldn't answer this question! But I think it well reduce performance because it only has 128k of cashe. I got out 2 years of PCWorld magazines and only found one new Celeron computer (in their charts) listed that had 128Meg of ram. This really made me wonder if there is a reason for this?

[Szech]

Probably the cost. Do you have to use special RAM modules? Because those laptop components generally cost quite a bit, since they have to be miniturized.

I'm also assuming it's need. Most people drag their laptops around to use business apps. Unless you have every business app open at once, anything more than 128MB is excessive. If there's no market for it, there's no profit to be had.

Of course, if you do need more than that, then I'd say go for it.

[radman3d2]

Well, I'm also trying to answer this cashing question for a friend of mine who just got a new celeron 700MHz w/64Meg of ram. He would also like to know if adding another 64Meg of ram would help or hinder performance. I may be way out in left field with this topic but, I have always wondered about the cashablity of the celerons ram because of this being an issue with AMD processors.

[radman3d2]

But, how much ram can I install before it is too much? I have an AMD w/128Meg of cashablity and this is because I have 512K of offboard cashe. With the Intel Celeron what is the cashability of the CPU? I know this also may have something to do with the chipset but I'm not sure what.

[RLT65]

I think that was a limitation only older intel chipsets. I know that the HX SKT 7 chipset supported up to 512MB, but the sorry TX only cached up to 64MB. I don't think some of the other people that replied to this know what we are talking about. If you went over 64MB on a TX board, nothing above that amount would be RAM cached. I have a BH6 BX chipset with 128MB ram. I would also like to know what the cache limits are with the BX chipset.

RT

[embalmerd]

It all boils down to how RAM hungry the programs you run are. And how often you reboot to reclaim it. You should also take into consideration your setting for virtual memory. The on die cache of a cpu is a speed processing thing, whereas MOBO on board cache and RAM will be more or less storage area for speedy access to certain program peculularities.

That's layman BS for, "I'm not sure what I'm talking about..."

http://sysopt.earthweb.com/forum/wink.gif Dead Man Walking

[krusty the klown]

According to H-Oda's WCPUID, the celeron has "L2 physical address range support" of up to 4GB.

Ur m8 with the celery700 should increase the memory to 128 or more - especially if they either do image editing /rendering / video editing, or are lazy like me and have about 5+ apps & windoze open at once. I noticed a big difference (no swapping) going from 64 to 128MB on my work celery500.

[CMonster]

Here is a very good basic overview of cache and caching www.pcguide.com/ref/mbsys/cache/func.htm (http://www.pcguide.com/ref/mbsys/cache/func.htm)

Parts of the Level 2 Cache

The level 2 cache is comprised of two main components. These are not usually physically located in the same chips, but represent logically how the cache works. These parts of the cache are:

The Data Store: This is where the cached information is actually kept. When reference is made to "storing something in the cache" or "retrieving something from the cache", this is where the actual data goes to or comes from. When someone says that the cache is 256 KB or 512 KB, they are referring to the size of the data store. The larger the store, the more information that can be cached and the more likelihood of the cache being able to satisfy a request, all else being equal.

The Tag RAM: This is a small area of memory used by the cache to keep track of where in memory the entries in the data store belong. The size of the tag RAM--and not the size of the data store--controls how much of main memory can be cached.

In addition to these memory areas are of course the cache controller circuitry. Most of the work of controlling the level 2 cache on a modern PC is performed by the system chipset.




[This message has been edited by CMonster (edited 10-20-2000).]

[bobcat]

RLT65 is right about the TX chip set. I lost 45% of my processing power due to this issue.

The caching issue is a function of the chipset, not the cache onboard the CPU.

As for the Celery, well, I've been running a 400A with 256M for 1.5 years now. No problem.