Low cas latency vs high speed

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Stoic Muffins

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Aug 25, 2014
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I am looking into buying new ram and was wondering if it would be better to get ram that was ddr3 cas 7 running at 1600 or ddr3 cas 11 running at 2400, I am looking to both game and run everyday programs, which would be faster and more stable in the long run. Is 2400 fast enough or should i move up to 2800? the cas gets up to 16 with high speeds though so is it worth it? I am also curious as to whether ddr4 is really faster than ddr3?

Thank you
- Stoic Muffins
 
Solution
Guys, here's the problem:

For over a decade, memory chips haven't really been able to break 8.5 nanoseconds by very much, regardless of how much $ you spend to slice or dice the frequency / latency variables.

Check out this article: Five Overclockable 32 GB DDR3 Kits, Reviewed - http://www.tomshardware.com/reviews/32-gb-ddr3-ram,3790.html

Here's the math on memory:

Example #1 - 1600.00(MHz) / 7(ClockLatency) = 228.57(MHz) / 2(DoubleDataRate) = 114.29(MHz) then 1(Second) / 114.29(MHz) = 8.75nS (nanoSeconds)

Example #2 - 1866.67(MHz) / 8(ClockLatency) = 233.33(MHz) / 2(DoubleDataRate) = 116.67(MHz) then 1(Second) / 116.67(MHz) = 8.57nS (nanoSeconds)

Example #3 - 2133.33(MHz) / 9(ClockLatency) = 237.04(MHz) / 2(DoubleDataRate)...


The 850 Pros are coming out now, so there may be some good deals coming on the 840 Pro as resellers clear inventory for the new version. The new Samsung 850 Pro 256GB are around $200 and use Sansung's new 32 Layer 3D V-NAND.