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AMD Bulldozer FX 1866MHz+ - Page 4

post #31 of 32
Quote:
Originally Posted by BlackOmega View Post
With that said, try it yourself. Take your RAM lower the frequency and tighten up the timings. Even try 1066 @ CAS 5. What you'll readily notice is that your rig should "feel" a little bit more "snappy" and appear quicker. I experimented with this on both my AM3 and this i7, and have come to the conclusion that tighter timings are wholly more important.
100% placebo.

Also, 1066 CL5 has worse latency than 1600 CL8.

Quote:
Originally Posted by BlackOmega View Post
The first thing that caught my attention was a decrease in loading time. In BFBC2 I would always be loaded up by the time the second or third spawn cycle was going. After dropping the frequency and tightening up the RAM to CAS 5, I would always load up before the first spawn cycle and would have to wait for it. Aside from that, even on the desktop level, everything was just faster.

There are some benchmarks, even on here, if you so choose to look for them, that will wholly depict exactly what I've described. Lower frequencies coupled with tight timings = faster performance.
I've done countless such experiments over the years. In basic use, I cannot tell the difference, not even with higher memory clocks and simultaneously tighter timings. The difference is rarely significant in benchmarks either, outside of archival tests.

Quote:
Originally Posted by cusideabelincoln View Post
Bullocks. That would be a noticeable difference with Bulldozer.
http://www.madshrimps.be/articles/ar...#axzz1b4BEvOuG

The 3DMark and Mafia II numbers are the most striking, and that's only the difference between 1333 and 2133. 1066 would be worse.
3DMark 06 changes by around ~3%, which is hardly striking. You do realize these graphs don't start at zero, right?

Mafia does see a decent improvement at 10%, which probably would be noticeable.

The rest of the tests are a wash. Single digit performance increases are not likely to be obvious ones.

Yes, tweaking memory can certainly help and small improvements here and there add up, but there is utterly no value justification in spending twice as much on the same amount of RAM just to get memory a few hundred MHz faster.


Quote:
Originally Posted by Blackops_2 View Post
That higher speed memory is not going to give substantial gain over lower speed memory due to different timings.
This is certainly a factor, but not what I was referring to.
Edited by Blameless - 10/17/11 at 4:45pm
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post #32 of 32
Quote:
Originally Posted by cusideabelincoln View Post
Bullocks. That would be a noticeable difference with Bulldozer.
http://www.madshrimps.be/articles/ar...#axzz1b4BEvOuG

The 3DMark and Mafia II numbers are the most striking, and that's only the difference between 1333 and 2133. 1066 would be worse.
+1 for mentioning an actual test after 10+ posts of speculation.
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