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Bursting the Athlon 64 Memory bandwidth bubble
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Old 24th May 2005, 21:25   #21
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the "problem" is that you need to drop the command rate to 2T instead of 1T, which will cause performance to drop a little;

the newest A64 revisions do run 4 sticks at 1T
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Old 24th May 2005, 21:33   #22
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Quote:
Originally posted by Haut^Karl

in my humble opinion, I don't believe we "gamers" only play the most recent games and that's all. As you can see from the responses above, we re-encode DVDs & video and play many, many other games & applications.

Here are Gamer's DVD Shrink performance numbers (the article has been updated with this also)



that's ~4% performance increase going from CL2.5 3-3-7 @ 200Mhz to 280Mhz...
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Old 24th May 2005, 21:57   #23
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Old 24th May 2005, 22:25   #24
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Old 25th May 2005, 01:28   #25
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Quote:
Originally posted by jmke
the "problem" is that you need to drop the command rate to 2T instead of 1T, which will cause performance to drop a little;

the newest A64 revisions do run 4 sticks at 1T
I have certainly not read every article but I remember from one that I did read that 4 sticks was still a no go.

And I've seen tccd at 340'ish 2T get out performed by tccd at 270'ish 1T

I don't know if any of this is a good representation of what we can generally expect with these settings/setups but I would like to see that proven wrong
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Old 25th May 2005, 01:49   #26
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Quote:
Venice based CPUs have finally learned to work with four double-side memory modules supporting 400MHz.
http://www.xbitlabs.com/articles/cpu...venice_14.html
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Old 25th May 2005, 02:12   #27
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Thanks for the update JMKE. Looks like getting tighter timings is almost as good as getting the HTT super high. Gives me something to think about.
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Old 25th May 2005, 02:53   #28
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I believe you could still get higher HTT whenever is allowed in your system; but you could use memory divider instead of getting the super expensive ones. I trust this is the very point JMKE is trying to express.

Everybody has constraints and specially in dealing with money. Why spend $270 on memories in a system with <$150 CPU, like in my case, with slight improvement (a few %)in games?

He indicated spending the money on newer HD, or graphic card would serve your system efficiency better.

All bets are off if you have money to waste; or simply spending money pleases you more.
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Old 25th May 2005, 06:11   #29
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http://www.xbitlabs.com/articles/mem...-ddr600_4.html

Good illustration here.
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Old 25th May 2005, 07:23   #30
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Quote:
Originally posted by kristos
I have certainly not read every article but I remember from one that I did read that 4 sticks was still a no go.
I was wrong, with older CPU cores the memory speeds drops to PC2700/DDR333
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