Help memory issue

[Alienow]

Hello all
I hope someone can help me with this issue.

I need some help setting up an athlon xp 1600 with pc 100/133 or ddr266 pc2100 memory.
I have tried to run the processor at its default 10.5 x 133 (xp 1600) but the memory failed
to keep its READ benchmark (about 3000 mb/s). It went down to 900 mb/s aprox.
I dont know what is this all about.
When running at 10.5 x 100 (1050) the memory READ times are normal but if the processor is set up to 10.5 x 133 (or even below that say at 1.2 gig) AND
the memory is at 133 THEN its READ benchmark goes down.
The READ benchmark is shown with Wintune software.
The other memory benchmark ( WRITE and COPY)are normally going up with the processor
speed increase.
The tip Wintune gives me is that the READ wait states is too low for a system os this class.


Thanks in advance

[HRM]

If you have DDR2100 just use that, it will like the 133/133 speed.
Many board do not do well with asymetric frequencies. ie 133/100. They are slower that way. Stick to the DDR2100 and set it to 133/133

[Alienow]

Hi
The matter is that the memory READ is very slow when I set 133/133.
There is something wrong that I did not figure out so far.
When the CPU is set up to 1.4 Gig THEN the memory
READ goes down.
Thanks

[ukulele]

Run the memory at 100. If it works good you fixed it.

[Alienow]

Hi
Well, if the BIOS allowed my running the memory
at 100. I could not do so so far.

Would anyone just do a test with Wintune (97 or 98) and post for us the READ benchmarks ?
I think this would be very helpful.
Thanks a lot

[ukulele]

What I was trying to say is if the system runs normal at 100 mhz front side bus then you will need to use that setting or get better ram. Some pc133 ram just won't work right at it's rated speed. I have two sticks of pc133 in my computer but it will only run at 133 fsb with one of them. I could either buy another stick of better ram or go with 100 fsb. My system is plenty fast enough for me at the slower setting and very stable so I haven't bothered to change it yet. I'm not a gamer so it works fine for me. If you are into gaming and can't stand the thought of not having the highest frame rate on the planet then keep shelling out the bucks, but no matter what you do you won't be top dog for long.

[Alienow]

Hello ukulele

I may not have been very clear so far then let me
explain it better.
Here are the points.

1- I am not sure if the memory at 100 is enough to
solve the issue whatever is the speed of the CPU, i.e. XP 2100+ or up. Just could not figure it so far.

2- I dont know for certain if the BIOS or other settings (jumpers etc)let one run the memory at 100, at any given CPU speed.

3- I dont know of other benchmark software that tells what the READ or WRITE or COPY of the memory are, at any given computer settings. That is why I asked in the previous post someone to run it for us to compare.

4- My intention is just to set up the computer properly. When the READ benchmark is down, even tough the CPU speed is faster one can see clearly that something is wrong, without doing any benchmark.

Any comments will be very wellcome.

Thanks in advance.

[ukulele]

The issues you are talking about (jumper settings and bios settings) are specific to the motherboard and chipset you are using. This is also true of any benchmark test anyone would post. Optimize the system as suggested by the MB manual. If that doesn't resolve the problem then you probably have some ram that is not up to spec. For better help then I can offer, post your hardware list and OS version and I am certain someone with a similar setup can help you further.

[Alienow]

Hi ukulele
Hi all

Well further information is that:
The jumpers and BIOS settings I mentioned was for adjusting the CPU speed and/or memory BIOS timing settings, what is a normal procedure when setting up a system.

I am optimizing the system as suggested by the MB manual. With both motherboards (with Via and SiS chipset) the same problem occurs.

With both memory modules (DDR 266 PC 2100 and SDRAM PC 133) of different brands the same problem occurs.

The system can post and run normally (stable) at various combinations of FSB/MEM speeds like 100/100, 124/124, 133/133 and also 150/150.
At this last settings the CPU posts like XP 1900 and the memory is overclocked from its default speed of 133 to 150.

As I pointed in the first message I am trying to run the CPU at its default speed. That is athlon xp 1600 at 10.5 x 133.

What I am saying is that ALL combinations are stable. Looks like it is not a memory problem in the sense of that is not up to spec.
Or what is the memory spec for a CPU at 1.5 GIG?
Should not I use DDR 266 PC 2100?

Well, thanks in advanced.