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"Your rig"

Well seeing as i've just finished building my "dream-machine" (took over 2 hours) I thought i'd ask you lot on what power your computer holds.

So.....list your spec.

AMD AthlonXP 2400+
MSI KT6 Delta FISR Motherboard
Coolermaster Aero 7 Lite
Seagate Barracuda 80GB Hard drive (7200rpm)
Connect3D Radeon 9600PRO
256mb of crucial Ram (PC2700) - Will be upgrading to more soon
"Zorro" silver case with 3 case fans
Phillips CDRW - Can't remember speed

I'll post a pic later. I'm just running it through Windows 98 setup - its formatting the drive at the mo.

Thanks Adrian all that RAM frequency stuff in the Motheboard setup makes sense now after reading everything thats been posted in here... no wonder I couldnt overclock above 2.9GHz (on a 2.8 Ghz P4)...

tigamilla wrote:
> So safedisc going on your informative paragraph, if I overclock my CPU
> internal clock fequency to say 205MHZ, causing it to run out of sync
> with the 200mhz RAM, am I actually slowing the system down?? Is the
> RAM frequency overclockable?

Yes and Yes. Well on my motherboard the Abit N7-S it lets you run the RAM insync with the CPU. So if the CPU is at 205mhz fsb then the RAM would also be that speed. RAM is available at faster speeds than 400mhz to buy, for example DDR466. Rememeber when overclocking RAM it may get hot and may not even like being overclocked. A small overclock may be ok but I doubt you doing to get some DDR266 running at DDR466 speeds.

So safedisc going on your informative paragraph, if I overclock my CPU internal clock fequency to say 205MHZ, causing it to run out of sync with the 200mhz RAM, am I actually slowing the system down?? Is the RAM frequency overclockable?

Thanks for the info Safedisc_V2. Always nice to expand knowledge in the area.

Pics of my system: -

www2.freepichosting.com/Images/107865/0.jpg

www2.freepichosting.com/Images/107865/1.jpg

i could not have put that better myself :)

Colin

Hmmm, interesting chat here.

Well, lets take an 800Mhz P4 as the example.

The internal clock speed of these P4s runs on at 200Mhz, which is then X4 by the P4s internal architecture – Intel calls this a ‘quad-pumped’ FSB architecture (gotta’ love PR)

Hence the 800 Mhz FSB rating.

This X4 process is the same with all P4s, so hence…

A P4 with a 533 Mhz operating FSB speed has an internal clock of 133Mhz.

A P4 with a 400 Mhz operating FSB speed has an internal clock of 100Mhz



Now, onto the RAM…

PC3200 RAM runs at 200Mhz, however because its DDR, and therefore can complete instructions on both the up and down clock cycle, the effective running speed of the RAM is 400Mhz. But this doesn’t change the fact that the REAL Mhz is 200.

So bearing this in mind, a P4 with a FBS of 800 Mhz and PC3200 RAM has the same core Mhz and therefore run in perfect sync.


As a side note, I was quite surprised to read a while back that AMD Althons (yes all of them including the XPs) run a similar configuration, but instead of having a X4 of the internal clock speed to get the operating FSB speed, AMD chips run at double the Internal clock. So if you have an Athlon with a 333 Mhz FBS, the internal speed is actually 166 Mhz.


Also @ AMD_MAN

I assume you meant to say you run ‘you stickS of RAM in dual channel’ – as it would be tough to run a single stick of RAM in dual chan mode :-p

P4's seem not to be affected so much by running the ram at equall fsb to the memory but i am also running my stick of ram in Dual DDR formation which is a good increase.

Colin

gamezfreak wrote:
> adrian wrote:
>
> running at 166mhzFSB
>
> Do you mean 266? :P
>
> I've heard different - I heard that its best to keep the RAM at the
> same speed as the processor.
>
> Ignore me though - I know nothing.

No not 266mhz. When CPU works out a speed it does so by using a FSB frequency and a multiplier. So for example a XP2800 is 166x12.5. The overall FSB of the CPU is 333mhz. PC2700 RAM runs at 333mhz so in this case is in sync, and on most motherboards it will sync the RAM even though it could be PC3200. So having the RAM in sync works for AMD processors, but what about P4s with 533FSB or 800FSB. Now putting in PC3200 RAM would only be half of the speed of a 800FSB P4.

So actually thinking about it you are right in saying keep it at the same speed, as I was trying to say the same thing but didnt think about it properly. The FSB of a XP2800 is 333mhz so its best to use PC2700 RAM or PC3200 running at the slower clock. But what about P4's ??

adrian wrote:

> running at 166mhzFSB

Do you mean 266? :P

> the RAM is synced to 333mhzFSB even though its
> PC3200 which runs at 400mhz. From tests i've done and things i've
> read the best performance for a system is to keep the RAM at twice
> the FSB of the processor.

I've heard different - I heard that its best to keep the RAM at the same speed as the processor.

Ignore me though - I know nothing.