Low Latency vs. Bandwidth

[Uber_Gamer]

I already know that tighter memory timings will yield better performance than higher memory bandwith, especially on AMD 64 machines. My question is slightly different. Let say hypothetically I'm going to overclock my Memory to 250 mhz and would like to keep the timings down as low as possible. Would it be more advantageous to buy RAM that already runs at 250 Mhz and just try to tighten the timings (Corsair XMS4000Pro 3-4-4-8), or would it be better to purchase RAM that runs at a lower frequency, say PC3500 and has very low latencies (Corsair XMS3500 XLPro 2-2-2-5) and up the voltage and overclock to 250 MHz?

[Tin]

AMD 64s are not affected greatly by higher latencies. since AMD 64 has an integrated memory controller, low latency memory doesnt yield the performance differences seen with AMD XP machines. the differences between high and low latency memory for AMD 64 is nothing more than miniscule....something that runs 2-2-2-5 will not perform much better than 3-4-4-8 modules. AMD 64 loves sticks with Hynix D43, Hynix D5, and Micron mT -5bC. the mT -5bC are the chips found on the OCZ Enhanced Bandwidth series memory....qand should run at 3-2-2-7 @ 250FSB with a reasonable amount of voltage.

[deeppow]

My advice is simple, listen to the Tinman he knows what he is talking about.

[Uber_Gamer]

That's interesting Tin. I read an article that said since the AMD 64 is so dependent/focused on memory that the tight timings will give a bigger performance boost than sacrificing them for a slightly higher speed. I'll take your word for it though. Anyway my question is...
Will two sticks of memory with the same chips but rated for different speed perform the same?
(ex. OCZ Low Latency PC3200 vs. a Low Latency PC3700 - As they have same chips but are at different speeds: PC3200, PC3700)
And I understand that there is variation in which chips are used in certain models and I should handpick them at a store, but where can I get the basic information about which sticks have which chips so I have something to work off of before I go to a store?