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post #21 of 30
Quote:
Originally Posted by CL3P20 View Post
Well, I have never seen any ddr2 800 hit 12-14k in memory bandwidth. , although you are correct in that latency is the key here.

ddr2 1200mhz cas5 = ~44ns latency or ~9700mbs Read
ddr3 1333mhz cas7 = ~52ns latency or ~9300mbs Read

While the latency is bad, raising speeds or lowering the timings can tighten up the ddr2 efficiency just fine. And since it has more Tx clocks/sec, the Write speeds are always higher than with ddr2, even when latency is in the pits.

*Look for some TeamExtreme cas6 or 7 ...they have been clocking very well, and hitting cas6 at very high speeds.
Oh yeah DDR3 is perfect if your purchasing it specifically to run Sis Sandra. It's all about gaming performance for me and i can tell you DDR3 is a waste of money.
 
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post #22 of 30
Quote:
Originally Posted by xdaseinx View Post
Lower latency DDR2 will result in better performance at an average overclocked fsb of 500 and under. A 400(1600) fsb requires 800MHz DDR2 at 1:1. IMO, the only reason to use DDR3 would be for extreme LN2 based overclocking of fsb speeds above 500(20000) and even then you could use 1033 DDR2. You could overclock the ram, but you would get better stability and lower latency at 1:1 though others may disagree. You would only benefit from DDR3 above 1200MHz.
I have yet to see lower latency with 1:1.
so far taking my computer at 400mhz fsb using a 800mhz setting on the ram vs a 1066mhz with both at 4-4-4-12. I get more bandwidth and lower latency at 1066mhz on the ram.
using your ram at 1:1 if your ram can go faster then 1:1 just hurts performance.
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post #23 of 30
I would still recommend either 1600mhz+ddr3 or stick with ddr2 as mentioned. I can tell you from my experience, it is hard to overcome the additional latency at speeds under 1400mhz [especially since those are still in the realm of ddr2 speeds!]

SiSandra is not going to like the latency increase, neither will SuperPi...
post #24 of 30
post #25 of 30
Quote:
Originally Posted by cognoscenti View Post
Yup, and DDR3 sucks donkey unless your going DDR3 1600+
 
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post #26 of 30
Quote:
Originally Posted by Mhill2029 View Post
Oh yeah DDR3 is perfect if your purchasing it specifically to run Sis Sandra. It's all about gaming performance for me and i can tell you DDR3 is a waste of money.
So are alot of things then. Why a quad? Hardly any games use 4 cores efficiently right now. The point of using something like DDR3 isn't that it will give you IMMEDIATE results, but that it will give you better results 6 months from now. The same argument is had when people say go quad. Currently in terms of gaming, a quad isn't all that great unless you really crank up the speed. You are giving the same reasons to not use DDR3 that some people use to say not to get a quad...yet you have a quad.
    
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post #27 of 30
Quote:
Originally Posted by RPIJG View Post
So are alot of things then. Why a quad? Hardly any games use 4 cores efficiently right now. The point of using something like DDR3 isn't that it will give you IMMEDIATE results, but that it will give you better results 6 months from now. The same argument is had when people say go quad. Currently in terms of gaming, a quad isn't all that great unless you really crank up the speed. You are giving the same reasons to not use DDR3 that some people use to say not to get a quad...yet you have a quad.
Not quite the same argument, Quads are as cheap as their Duo counterparts, DDR3 is not.
 
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post #28 of 30
you guys are arguing pees and carrots.

I think we have well established the fact that the increase from ddr2->3 is minimal unless purchasing speeds beyond 1600mhz.

I can tell you from my own setup, I am running stock speeds of 1333mhz at 8-8-8-18, perf level 8 and getting ~54ns latency with ~9300mbs Read / ~3500mbs Write speeds, as seen by Everest home edition.

While its definitely not as fast as my ddr2 @ 1200mhz cas5, its a substantial improvement over my ddr2 @ 800mhz cas4. *[These bandwidth test done at 417mhz FSB, 5:8 divider]
post #29 of 30
If you're looking for good DDR3 memory the Reaper is good, but this is better.
http://www.newegg.com/Product/Produc...82E16820227256
There is a great article about DDR3 here and it says why that is better.
http://www.tomshardware.com/2008/01/...ency_shootout/
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post #30 of 30
Quote:
Originally Posted by Truambitionz View Post
Are you originally from America?.... becuase that's the American way.
I actually laughed when I read that!!
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