P4P800 can't get 800Mhz, why? (newbie here)

[chracatoa]

Hello,

I have a Pentium 3.06 HT Ghz on a P4P800 motherboard, with 2x512
DDR400 (supposedly) memories. HT is enabled, everything else is auto.

If I leave everything on auto, the memory starts as 333 and the
motherboard as 4x133. WTH?

If I do it manually, i.e., FSB 200 (x4) and DRAM 400 Mhz the system
does not boot.

So... what else affects the motherboard clock that I'm not aware of?
I'm a newbie here, so bear with me.

I bought the machine as a package, so if something's wrong they should
exchange it. But their service sucks and it takes a lot of time to get
my machine back, so I want to do it myself if it's possible.

Thanks!

 

[Philip Callan]

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chracatoa wrote:
| Hello,
|
| I have a Pentium 3.06 HT Ghz on a P4P800 motherboard, with 2x512
| DDR400 (supposedly) memories. HT is enabled, everything else is auto.
|

AFAIk, the only 3.06Ghz processor was a 533FSB version.

| If I leave everything on auto, the memory starts as 333 and the
| motherboard as 4x133. WTH?

4x133=533Mhz FSB Memory 166x2=333
|
| If I do it manually, i.e., FSB 200 (x4) and DRAM 400 Mhz the system
| does not boot.
|

The RAM is DDR400 (uses a 200FSB, 2 instructions per clock cycle)
Your Processor is 533FSB (uses a 133FSB quad pumped = 533Mhz)

| I bought the machine as a package, so if something's wrong they should
| exchange it. But their service sucks and it takes a lot of time to get
| my machine back, so I want to do it myself if it's possible.
|
| Thanks!


Nothings wrong per say, its just you have faster clocked memory than
your CPU is capable on its FSB.

If you had a 800Mhz FSB P4 (C series) your RAM would be running at
DDR400, its the FSB of your cpu holding back the RAM.

You can either A) Get a P4C 3.0Ghz 800FSB chip, or overclock the FSB of
your CPU in order to take advantage of the leg room your CPU is giving you.

hth
Philip
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[SpongeBob]

Hello,

I have a Pentium 3.06 HT Ghz on a P4P800 motherboard, with 2x512
DDR400 (supposedly) memories. HT is enabled, everything else is auto.

If I leave everything on auto, the memory starts as 333 and the
motherboard as 4x133. WTH?

If I do it manually, i.e., FSB 200 (x4) and DRAM 400 Mhz the system
does not boot.

So... what else affects the motherboard clock that I'm not aware of?
I'm a newbie here, so bear with me.

I bought the machine as a package, so if something's wrong they should
exchange it. But their service sucks and it takes a lot of time to get
my machine back, so I want to do it myself if it's possible.

Thanks!

Sounds like a memory issue...What brand of memory is it? Might want to
loosen the memory timings (3-4-4-8) a bit and try manually setting FSB at
200. Or...return the memory and get something better.

 

[SLB]

Hello,

I have a Pentium 3.06 HT Ghz on a P4P800 motherboard, with 2x512
DDR400 (supposedly) memories. HT is enabled, everything else is auto.

If I leave everything on auto, the memory starts as 333 and the
motherboard as 4x133. WTH?

If I do it manually, i.e., FSB 200 (x4) and DRAM 400 Mhz the system
does not boot.

So... what else affects the motherboard clock that I'm not aware of?
I'm a newbie here, so bear with me.

I bought the machine as a package, so if something's wrong they should
exchange it. But their service sucks and it takes a lot of time to get
my machine back, so I want to do it myself if it's possible.

Thanks!

You have a 533 bus processor instead of a 800 bus type. I dont think
they even make a 3.06 in 800 bus flavor.