Old DDR 3200 question

[SunSamurai]

Why is my 3200DDR1 400 RAM giving me only a little over 2000MBps bandwidth in memtest? Shouldn't it be around 3200?

The first thing i checked was that it was in dual mode or not; it is.
The next thing im thinking is the CR being at 2T instead of 1T. Would that drop prefomance so much?

Ive included a image. Thanks!
http://hdimage.org/images/05pdwyqnprj0xnu17at8_ddr.png

 

[Blain]

Yep, at peak
nope

 

[SunSamurai]

At peak? 3200 rated DDR isnt ~3200MBps throughput at stock settings? This is a 60% difference!

 

[Blain]

Looks like only a 40% difference to me.

It's a theoretical peak speed, not an average speed.
You don't think that your SATA II averages 3Gbit/s do you?
Yet that's the theoretical maximum speed.

 

[Billb2]

Originally posted by: aeternitas

The next thing im thinking is the CR being at 2T instead of 1T. [/L]

Set it to 1T, that's faster.

 

[chrisf6969]

depends on your FSB, dram timings, etc.

At 300FSB, with 3:2 ratio, and ram timings set to 2-3-2-6-1T, I was pulling 6000Mb/s

This was on my Abit IC-7 with a great 2.4C that I just sold. :/

http://www.crowdcontrolusa.com/overclock/screen3666.jpg

 

[SunSamurai]

Originally posted by: Blain
Looks like only a 40% difference to me.

It's a theoretical peak speed, not an average speed.
You don't think that your SATA II averages 3Gbit/s do you?
Yet that's the theoretical maximum speed.

3200/2000=1.6 not 1.4.I dont know what kind of calculator youre using.

SATA is an interface, RAM is not, so flawed example. Not saying you're wrong though.

Originally posted by: Billb2

Originally posted by: aeternitas

The next thing im thinking is the CR being at 2T instead of 1T. [/L]

Set it to 1T, that's faster.

Cool I'll go ahead and set it to 1-1-1-2-1T while Im at it.

..

Hey whys my computer on fire?

Originally posted by: chrisf6969
depends on your FSB, dram timings, etc.

At 300FSB, with 3:2 ratio, and ram timings set to 2-3-2-6-1T, I was pulling 6000Mb/s

This was on my Abit IC-7 with a great 2.4C that I just sold. :/

http://www.crowdcontrolusa.com/overclock/screen3666.jpg

Im pulling 3.6GB/s in Sandra. Im not sure if thats real or not. In the memtest I used im pulling a little over 2GB/s. Im thinking Sandra is not real and it just giving you the theoretical peak numbers, not your actual throughput. Like the other poster said, I believe youre seeing how big the pipe is, not how much is actually being pushed through it by the RAM.

 

[Fox5]

What processor? An athlon XP lower than the 3200+ would give around 2000GB/s.

 

[NXIL]

Mr. Blain is correct:

% change, 3200 to 2000:

http://www.percent-change.com/index.php?y1=3200&y2=2000

-37.5%

Note: from 100 to 50: -50% change.

From 50 to 100: 100% change. This get important in analyzing yields of investments, etc.

HTH

 

[taltamir]

aeternitas... it isn't a matter of calculator, it is a matter of correctly using percentages.

3200 is 60% MORE than 2000.
2000 is 37.5% LESS than 3200.

Anyways... 3200 is top theoretical max bandwidth... don't expect to get it sustained.

 

[Yellowbeard]

Just like the speedometer on most cars.