well, there isnt a 3400+ as such.
Actually there is a 3400+ it's just not at all common.
Dale - the cas latency and cycle time effect stability more than they do bandwidth. The middle numbers effect bandwidth. If you OC'd to say like 205 and loosened your timings to 3-3-3-8 from 2-2-2-5 you'd lose bandwidth, but if you were at like 220+ with 3-3-3-8 you'd have a gain in bandwidth for sure.
Well, it is not really clocking down. It is like this.
Stock: Ram ratio 4:3; FSB 200/800; RAM 266/533 4-4-4-12
OC (the specific config I am mentioning): Ram ratio 1:1; FSB 266/1066; RAM 266/533 3-3-3-9
Does that make since?
lol no it doesn't really make sense, not to me anyway.
There is no 'stock ratio' for the RAM...it's completely dependant on what you have your CPU at.
If you have your RAM at 266MHz, but you use tigher timings, that's still not overclocking, because you aren't pushing the spec'd speeds at all..it's just 'optimizing' if you will.
Charles - You don't have to full understand what each timing does per se....you just gotta know the simple basics like...as the MHz go up your timings must become relaxed and more voltage will be needed to be added to the RAM to increase stability.
Memtest86+ loops and prime95 in blend mode are good for testing the RAM, but as I've found out, gaming is the ultimate test for stability.
Go there, scroll way down to DRAM TIMINGS and it will give you more info than you really need lol. That will explain what you need to know as far as the timings and how they relate to stability or bandwidth