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[TR] Exploring the impact of memory speed on Sandy Bridge performance

post #1 of 77
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Quote:
Standard Sandy Bridge processors may default to a 1333MHz memory clock, but select DDR3 modules are capable of running at much higher speeds. In some cases, you won't pay much of a premium. Name-brand DDR3-1600 kits start at around $45 for 4GB, which isn't much more than the cost of equivalent DDR3-1333 sticks. For roughly twice that amount (and very close to what slower DDR3 memory cost only a year ago), you can get your hands on exotic modules rated for operation up to 2133MHz.

Curious to see whether fancy DIMMs are worth the premium, we've taken the time to explore Sandy Bridge performance with a range of different memory configurations. Read on to see how memory clock speeds and latencies impact Intel's latest processor architecture.
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post #2 of 77
...so the only reason to get high frequency RAM is e-peen.
    
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post #3 of 77
Yep, overclocking RAM is reducing the time of something that takes nanoseconds, as opposed to overclocking CPU or GPU to reduce calculations that take milliseconds.

Edit:
Quote:
If you're looking to set benchmarking records or to compensate for personal shortcomings, K-series Sandy Bridge CPUs at least make it easy to run exotic DIMMs at blistering speeds.

Edited by heraisu - 2/10/11 at 4:20am
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post #4 of 77
lulz. I didn't even see that!
    
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post #5 of 77
Tell that to the loonies that salivate at the mere thought of running quad channel memory at blistering speeds just to play a game that came out in 2007.
post #6 of 77
Every once in a while articles like this come out and clearly point how big of a waste super speedy RAM is -- and yet the sheeple keep following...
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post #7 of 77
I'm pretty happy with my 2600k running with 1600 DDR3.

Furthermore, these HyperX sticks are rated @ 1600 with 1.65, and they pull 1600 with only 1.55v.

I'll be getting another kit soon
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post #8 of 77
i just RMAed some Gskill 1333 CL7 sticks so i can get 1600 CL8 and i dont give a fudge
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post #9 of 77
Yup, same thing that has been true since Lynnfield and Nehalem, memory speed matters little on these platforms.
    
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post #10 of 77
Similar tests were reported back when Nehalem was first released. That's why I didn't blow a bunch of money on superfast RAM, there was going to be little to no benefit. And DDR3 was expensive enough as it was without going for e-peen bragging rights.
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