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2009-02-23T16:48:12Z

There's quite a lot of variance in DDR3 modules today, which can certainly be overwhelming for potential new buyers. While the Core i7 processor is officially rated to run at only DDR3-1066 speeds, modules that can run at DDR3-2000 or even higher are available for the Core i7, and many new motherboards support speeds even greater than these. There is also the introduction of huge 12 GB (6 x 2 GB modules) capacity kits to consider, and we have latencies in the CAS 7 to CAS 9 range, all of which affect pricing of these various modules kits dramatically.

Today, we're going to look at some of these new kits and see if we can break down what memory-related aspects users should look for when buying an X58 / Core i7 platform. We've got kits from big names like Corsair, Kingston, and OCZ in the labs. Let's try to clear up some questions, shall we?

DDR3 Round-Up: Memory Performance With The Core i7

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Super Dave
2009-02-23T22:43:00Z

What a great story...thanks for the comparo! DDR3 is so much more expensive than DDR2 right now (I have read that the price difference between the two will be much closer at the end of this year), but Core i7 builders don't have a choice. If a Core i7 builder tries to save some money and only installs two sticks of memory, will it run in dual-channel or single-channel mode?

nelsoncp21
2009-02-23T23:10:08Z

awesome article guys. Could have used that a couple weeks ago though[:P]. I would have went with the OCZ modules more then likely. Although I have not yet messed around with the dominator 1600 set that I got. I have a feeling that if I tweak it I can probaly get some better timings out of it. Default settings on my board have it running at 1333. What did you guys use when you tested the rampage 2 board?

amdcrankitup
2009-02-23T23:37:28Z

Im thinking the right ddr3 and the rampage 2 boards are going to sport some very high marks and cant wait to see the numbers the the lucky guys here that alredy have access to these setups!Make you lealous and [censored]r!

Dave_HH
2009-02-23T23:57:40Z

Glad you liked this one, gents. Chris did a good job with it for sure. It shows some interesting results actually.

For the RE 2 board, I believe Rob used some Qmonda RAM.

tanka12345
2009-02-24T00:38:23Z

Great review. I too hope that DDR3 prices go down, so I'll be able to use my Eclipse.

Well, maybe I could 'borrow' a review sample. [;)]

kato_cmd
2009-02-24T00:47:09Z

Nice article,  I do have a question about your comparison of memory bandwidth testing between 1,2 and 3 channel modes.  I've noticed that the amount of ram changes with each test.  While this isn't a problem on synthetic tests that actually check the memory bandwidth it will skew real world testing as things like photoshop tend to gain performance when the ram capacity increases.

Have you guys thought of keeping the ram capacity the same in single, dual and tri channel modes?

This would give you an exact indication of whether the extra channels are giving a benefit or if the previous result was due to extra capacity.

nelsoncp21
2009-02-24T18:58:24Z

Dave_HH wrote:

Glad you liked this one, gents. Chris did a good job with it for sure. It shows some interesting results actually.

For the RE 2 board, I believe Rob used some Qmonda RAM.

Qmonda RAM? Is that like an abreviation for something? I was more curious about the speeds and how he might have adjusted timings if he did any of that when it was overclocked. Seems to have locked in settings for the timings when adjusting the speed of the memory. I have't messed around with the gazillion settings yet but thought since we were on the topic of memory I would ask.

tanka12345
2009-02-24T22:14:36Z

Don't you mean Qimonda Dave?

ZForgetAboutIt
2009-02-25T09:31:02Z

I don't understand how (in Article Index: Clock Speed") the Crysis benchmark graph shows

  1866 MHz = 73.76 FPS

   800 MHz = 66.36 FPS

difference =  7.40 FPS

but the article text in that section claims

"Moving from DDR3-800 to DDR3-1866 bumped up Crysis by nearly 10 FPS..."

Please explain.

rapid1
2009-02-25T11:35:35Z

No Nelson thats not an abbreviation actually. Qmonda is the company who actually made the actual DDR5 on ATI video cards. They also made the DDR4 on the 3870's as well I believe. So they are about the fastest ram maker in the world at least on a developmental aspect. I know other people are making DDR5 now but they had it developed and rolled out for the 4870's release which was what mid July last year.

rapid1
2009-02-25T11:40:25Z

No Nelson thats (Qmonda) not an abbreviation actually. Qmonda is the company who actually made the actual DDR5 on ATI video cards. They also made the DDR4 on the 3870's as well I believe. So they are about the fastest ram maker in the world at least on a developmental aspect. I know other people are making DDR5 now but they had it developed and rolled out for the 4870's release which was what mid July last year.

Oh and referring to 7.40 FPS being credited as 10 FPS I think they were using an average if it is over 5 FPS it is relatively 10 FPS inrease. Whereas, if it was 4.40 fps it would have been credited with no increase in FPS in Crysis at all.

ZForgetAboutIt
2009-02-25T13:08:41Z

rapid1 wrote:

Oh and referring to 7.40 FPS being credited ...

Hmm...

 

Modred189
2009-02-25T17:25:20Z

OK, so let me get this straight, you tested 6gb ram kits on a 32-bit system that, if you just include the video card, can only address 3.5gb of it? How does that make any sense?

Dave_HH
2009-02-27T00:18:10Z

All test systems were configured with Vista 64-bit. That was a typo in the spec list and has been corrected.