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Old June 13, 2009, 06:46 AM
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Default Question about Clock Speed and Timings

Okay, so I'm making a new build, and I was looking at ram and I had to wonder, which would be faster/what is the difference. I know it probably doesn't matter loads, and I wouldn't notice the difference in real life but here it goes

Corsair XMS3 DDR3 Triple Channel 1333MHz 7-7-7-20 6GB

vs.

Corsair XMS3 DDR3 Triple Channel 1600MHz 8-8-8-24 6GB

One has faster clock speeds, but bigger timings...
they're comparable prices, so I had to wonder, which one would be faster and how much would I really notice in real day-to-day use of my rig (or why should I care factor)?
the 1333MHz ram is about 20$ cheaper

The

the build I'm looking at is here if it matters all that much to figuring out which would be faster
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Old June 13, 2009, 09:15 AM
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The set with the higher timings will be faster. It will have a higher bandwidth, but a similar latency. The higher clock speed makes the actual latency about the same for both. You probably wont notice a huge difference, but they faster sticks might give you a bit more headroom for overclocking so those would be my choice.
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Old June 13, 2009, 10:10 AM
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and so if I'm not overclocking, it doesn't really matter then?
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Old June 13, 2009, 05:40 PM
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I'd almost put money on the chips under the heatspreaders being the same, just binned differently. Honestly, you'd probably be hard pressed to see any difference in day-to-day, especially if the rest of your system isn't overclocked as well, but there will still be a few small gains to be had from having a higher memory frequency. For $20, I think I'd be tempted to go with the faster stuff, if only so I didn't have to wonder whether I gave up any performance.
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Old June 15, 2009, 07:53 PM
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i usually go for the lower timing rams, i tend to think lower timings are faster for loading and such

I also think lower timing rams can hit 1600mhz with those timings, so the lower clock is a win win

but then again i could be wrong
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Old June 16, 2009, 12:41 PM
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Default Made a mistake in RAM, does it matter ?

Hello, I placed an order at NCIX for a whole new rig(check sig) and I just noticed today that I mixed the RAM I wanted to use.

I wanted this G. Skill PC2-8000 2x2gb and it appears I ordered G. Skill PC2-6400 2x2gb.

I know in both cases my system will run, but what difference would these 2 RAM sets have made on such a system ?

Is it worth it to return the RAM or to sell it and to get some faster one ? Or should I stay with what I ordered ?
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Old June 16, 2009, 02:17 PM
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Quote:
Originally Posted by Kilauea View Post
Hello, I placed an order at NCIX for a whole new rig(check sig) and I just noticed today that I mixed the RAM I wanted to use.

I wanted this G. Skill PC2-8000 2x2gb and it appears I ordered G. Skill PC2-6400 2x2gb.

I know in both cases my system will run, but what difference would these 2 RAM sets have made on such a system ?

Is it worth it to return the RAM or to sell it and to get some faster one ? Or should I stay with what I ordered ?
First of all, how much did you paid for the PC2-6400? if its 10-20 dollars cheaper keep the ram. But if you overclock like crazy, Its time to RMA.

In real world times you won't even notice if its running 800mhz or 1000mhz but in benches you see a slight increase
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