2x1G PC5300 Bus 667: Bandwidth issue - NEED HELP

I bought 2x1G PC5300 Bus 667 of PNY yesterday.

This is the result when I test with Sisoft Sandra Lite 2007.3.11.22 (Win32 x86):

RAM Bandwidth Int Buff'd iSEE2 3668 MB/s (bandwidth efficiency: 69%)
RAM Bandwidth Float Buff'd iSEE2 3675 MB/s (bandwidth efficiency: 69%)

Maximum Bus Bandwidth: 5312 MB/s (Speed 664MHz)

Maximum Memory Bus Bandwidth: 10624 MB/s (Speed 664MHz)

2 RAMs are running in dual channel mode

Is this bandwidth too slow????

My system is Dell Inspiron 6400:
Core2 Duo 2.0Ghz bus 667Mhz
2x1GB PC5300 bus 667Mhz
256MB ATI x1400 Hyper Memory
120GB 5400rpm

Can you benchmark your system with Sisoft Sandra (especially if you have similar system config with me) and tell me if your bandwidth is much better. I'm considering teturning the RAMs if this is too slow.

Thank you very much!!

 

Check this link out, scroll down to the chart showing bandwidths and you'll find your to be completely acceptable:

http://www.digit-life.com/articles2/mainboard/ddr2-800-am2.html

 

You're running 3 whole MHz below spec and you worry that the ram is bad, or that this will put a big hit in your performance?

You're fine, and you won't notice any difference between what you're getting now vs what the ram should run at.

 

What he's talking about is that the bandwidth efficiency seems low. No part is ever going to hit it's theoretical maximum, and as long as your benchmarks are similar to others I would not worry about it.

 

Thanks to Cheffy, adinu & night_2004.

And thanks to Cheffy again for the link to the article, I never knew about Rightmark Memory Analyser.

This is my result with RMA, but it does not as "smooth" as the result in the article:



Result shown in [Min] / [Max] / [Avg] MB/s:
Read bandwidth: 3818 / 15839 / 6981
Write bandwidth: 1525 / 13104 / 6167
Copy bandwidth: 1204 / 13067 / 4517

It's totally different from the DDR2-667 in the article (I think it's because they used a DDR2-800 but set it to DDR2-667 mode).

So can any professional guy analyze the results for me?? (are my RAMs good or bad??)

Thank you!!

 

If your ram was bad, u would see it in other ways, such as blue screens, random crashes, system instability. That's what "bad ram" does to your system. So if your system is stable and your ram passes MemTest86+ (which you should get and run) then the bandwidth numbers you get are just what your computer has and should not be because of bad ram.

So get yourself MT86+ if you're really paranoid about bad ram, but like I said before, bad ram will crash your system moreso than run at lower bandwidth.

 

Upsss

I'm sorry for your misunderstanding. When I said "good or bad" I mean low or high bandwidth, sorry.

So, again, do you think it's low or high??

 

Glad to help clear that up - I knew I bookmarked that page for a reason!

 

Here is an article that is a better comparison. http://www.digit-life.com/articles2/cpu/rmma-yonah.html

Your result does seem a bit lower and alot of up and down. But the averages are about the same. Dont worry about it unless you feel a lack of performace in real aplications.

 

Actually 10 times i run the test, it gave 10 different graphs, none of them are as stable as the results in 2 articles. That's the only thing that makes me confuse now because (until now) my system works fine.

But if you all said that it's OK then it's OK

Thank you all: wave, Cheffy, adinu & night_2004.