Cache ?

Discussion in 'General Hardware' started by ronenph1, Aug 4, 2002.

  1. ronenph1

    ronenph1 Guest

    hey guys

    its maybe a silly question

    but what is the 'cache'?
    whats the difference between a p4 with 256k of cache and a p4 with 512?
     
  2. Friend of Bill

    Friend of Bill What, me worry?

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    P4 with 512k is more than the P4 with 256k.
     
  3. ronenph1

    ronenph1 Guest

    but what is 'cache'
     
  4. Friend of Bill

    Friend of Bill What, me worry?

    Messages:
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    A five letter word derived from the French language. (Just kidding). Just do a Google Search for an indepth and accurate definition.
     
  5. ronenph1

    ronenph1 Guest

    is there a big difference between the 256 to the 512 ?
     
  6. I have a 512kb cache. A friend with otherwise the same basic hardware but a 256 cache has a speed difference noticed only in benchmarks and stress test. There seems to be about a 23% increase in performance on my pc. I built his like I built mine, but I couldn't get a 1.80A p4 at the time, so he settled for a 1.80...Right now it doesn't make that much of a difference, because software doesn't demand it yet.
     
  7. Heineken Man

    Heineken Man Guest

    Bus Speed

    Ok since we have the cache down, what about bus speed?. I know it increases performance but if that was tottaly true then the Pent4 533mhz fsb would kill AMD correct? And we know that's not the issue, so whats up with that? Also does the 533fsb rock with the pc800 ram?
     
  8. blinden

    blinden OSNN Senior Addict

    Messages:
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    Location:
    Pittsburgh, Pa, USA
    Bus speeds haven't REALLY changed in the last few years, they are just doing duplex and "quad pumping" and such, which are faster, but not really, still 100 or 133 mhz core bus speed. Also, as far as Cache goes, it's static ram, as in it doesn't get refreshed like SDram, thus it's very fast (and expensive to produce) it's basically like cache->ram->HD, if the CPU can access the info it needs straight from cache.. VERY fast, if it needs to get into ram, still quite fast, if it needs to go the whole way back to the HD, slowness
     
  9. Heineken Man

    Heineken Man Guest

    So you are telling me that I would be pretty much wasting my money if I buy a Pent4 533fsb cpu over the 400fsb cpu?
     
  10. ronenph1

    ronenph1 Guest

    I'm very satisfied with my 1.7 Ghz, 256k cache 400Mhz bus speed P4.


    :D
     
  11. Heineken Man

    Heineken Man Guest

    Well I am about to drop $500.00 on 2 cpu's and about another $300.00 on 2 motherboards this month. I am a little confused about the buss rate. I will be compiling "C" and doing some graphic rendering and I though the a large fsb would help but it looks like I may be mistaken. The setup I was planning on was:
    Pent4 2.26 533fsb
    Motherboard: Not sure yet. (any sugestions would be great!)
    Ram: 512mb PC800
    AGP: Radeon all in Wonder Pro

    If the buss makes little to no diffrence from 266, 400, and 533. (and I think thats what you guys are saying) I could say a lot of money, so a deeper explaination will help me a lot. Also is there any moatherboard besides Intel that offer pc800 compatibility.

    Thanks to all that apply,
    Heineken Man
     
  12. Friend of Bill

    Friend of Bill What, me worry?

    Messages:
    1,572
    Nothing wrong with 533fsb, it's performance gain is slight but it is there. Also, a board that would really benefit from the P4 is the Ausus P4T533 with 32 bit RIMM. This is the ultimate kick-a** performance board. Nothing, and I mean nothing touches it in the performance catagory. Stability is also excellent.
     
  13. xsk8zerox

    xsk8zerox Moderator

    Messages:
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    Location:
    Philly
    it would be silly keeping pc800 ram