Low Latency PC3200 vs PC4400

[J_men]

Hi Guys

For performance in games, is it better to have low latency pc3200 memory or standard pc4400 memory. I want to use it for overclocking an AMD 64 3000+ (939). The PC4400 memory is always going to be able to handle what ever speed you push the cpu to (unless you go past 300MHz FSB). But can the low latency memory keep up, what kind of max bus speeds can you get? I've seen lots of review and comparisions or memory sticks but I'm still totally confused as to which to get. Is FSB or latency more important.

Also do you guys think that PC4400 is any more future proof?

 

[J_men]

I'm mean in general which is better, or is the brand more important?

Been looking at the "Corsair XMS4400C25PT 1024 TwinX" they seem to be the best compromise of timings and max speed, anyone tried them???

 

[BrentUnitedMem]

4400 is better for gaming. 3200 is better for non gaming because there is no standard for memory rated higher than DDR-400.

Corsair, Crucial, Kingston are usually better brands.

And of course Samsung/Infineon/Micron Original is better than Samsung/Infineon/Micron on third.

Otherwise brand it doesnt make much difference.

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[J_men]

Thanks guys

Wusy - if there exactly the same chips then how come the manufacturer's rate them at completely different speeds?? just marketing or something??

 

[BrentUnitedMem]

All memory chips have a given date code and chip die.

One chip may differ from other chips in the die revision and date code. These differences can affect performance.

Many times when a company wants to buy memory chips, the look for specific dies and date codes to match their testing standards.

So, for TCCD even the same chips can be a little different.

Also, for a given batch of modules built using TCCD, only a few of them will pass as grade A, some as grade B, and so on.

General rule: Production yield for chips rated above DDR-400 is more random than for DDR-400 or lower speeds, which explains why we see different speed grades from modules built with the same chips.

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[BrentUnitedMem]

How to do it is a secret of the trade. hehe

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[Guest]

And you're privy to this "secret" I bet

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[BrentUnitedMem]

hehe. I am not at liberty to talk about this freely.

However, I can tell you a story. And leave the rest up to your imagination:
To fix bit errors, an ECC module setups the information in an array, the column and row the erros appear in leads to the identification of bad bits.
It's possible to identify the bad chips (or "not so good chips") amongst a series of chips.


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[BrentUnitedMem]

Also,

Perhaps some senior EE students have performed this experiment before:
An Oscilloscope can be used to measure the frequency of a given processor chip such as the 8086/8088.

Of course there are better tools available.


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[BrentUnitedMem]

I don't know of any PC that can do this.

There are special testers that are used only for memory modules.

They cost about $6,000 each.

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[Guest]

Lol, that's awesome You rock B

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