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High frequency RAM and gaming

Mon Dec 02, 2013 12:50 pm

Hello gerbils,

I'm sure you all saw the BF4 performance boost Corsair was claiming comes with using high frequency (2133-2400mhz) RAM?

Has anyone actually seen these claims proven by a company that is not trying to sell us RAM? did an article and its results show little performance difference (~1fps) between 1600 and 2400mhz RAM on Haswell.

It would be really cool if Tech Report would try to validate / refute these claims on x79 and z87, as they are pretty much the only source I would really trust on the matter.
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Re: High frequency RAM and gaming

Mon Dec 02, 2013 12:52 pm

From what I've seen it depends on your setup. If you are using an IGP/APU then having faster RAM is going to help quite a bit. If you are using a separate graphics card then it doesn't seem to help that much. At least that is what I've seen in the various reviews on this site and others.
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Re: High frequency RAM and gaming

Mon Dec 02, 2013 1:07 pm

I have to agree with Nano. These results are similar to the performance gains you might see using an APU. IMO, these numbers seem high for a dGPU rig.

As a sidenote, the performance gains you get at each step between 1600MHz and 2400MHz aren't linear. 1866MHz - 2133MHz is where performance starts leveling off. Watch for price vs. performance also.
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Re: High frequency RAM and gaming

Mon Dec 02, 2013 2:29 pm

You only typically see a performance increase if the ratio of speed-to-latency is reduced. A faster RAM module can actually perform worse than a slower one if the slower one has tighter timings.

Corsair probably tested the 1600Mhz RAM with really loose timings (giving a low ratio) and then tested the 2400MHz RAM with tight timings (giving a high ratio).

Anandtech represented it pretty well graphically here.
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