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Old 12-07-07, 06:59 PM   #1
mythy
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Cool Synced or Unlinked? Results inside!

So here you have it! I have benchmarked my Q6600 and DDR2-8500 ram at all available ratios/speeds and at 2 different core clocks! I have chosen 3 and 3.4GHz to test since they are the most common OC's around.

I have used the following tests:
*Sandra Lite Memory bandwidth
*Sandra Lite Memory latency
*MediaCoder Benchmark


First set of results are the most important since they compare the ram at a Synced state and a Unlinked! First you will see the bandwidth followed by latency and finally real world performance... Test are done in both 3 and 3.4GHz clock speeds.

Sandra Lite Memory bandwidth


Sandra Lite Memory latency


MediaCoder Benchmark



These next tests show you all the different speeds and strap available to you and there performance results.


Sandra Lite Memory bandwidth


Sandra Lite Memory latency


MediaCoder Benchmark



Sandra Lite Memory bandwidth


Sandra Lite Memory latency


MediaCoder Benchmark





So there you have it! Synced is slower and the lesser speed adds to its latency! While the performance gains arnt huge I should point out that every ns counts!
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Old 12-07-07, 08:24 PM   #2
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Default Re: Synced or Unlinked? Results inside!

Well I feel dumb... what is the "strap"?

I don't think I've ever heard that term before.
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Old 12-07-07, 08:45 PM   #3
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Default Re: Synced or Unlinked? Results inside!

Its a internal dram ratio inside the northbridge. Not all board allow you to change it. But you can see how it effects the clocks
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Old 12-07-07, 08:47 PM   #4
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Default Re: Synced or Unlinked? Results inside!

interesting... I wonder why the results are such... were the timings of the memory changed in the different strap modes or did you leave the timings alone? Generallly when running at a lower strap you can tighten the timings of the memory by quite a bit.
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Old 12-07-07, 08:52 PM   #5
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Default Re: Synced or Unlinked? Results inside!

I can run 4-4-4-12 to 533 but for the tests it was all at stock. and to be honest I noticed no performance increases at 4-4-4-12 The speed more then makes up from any gains you might see from the tighter timings.. I know that goes against the general hear say but hey what ever
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Old 12-08-07, 01:36 PM   #6
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Default Re: Synced or Unlinked? Results inside!

Did you try any game benchmarks by chance?
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Old 12-08-07, 01:44 PM   #7
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Default Re: Synced or Unlinked? Results inside!

do you have any ideas how many reboots I had to do? I was at it for over a hour...

Never the less I am planing a retest at 2.4GHz stock at 1:1 and max dividers for my 1066 ram. At 1:1 I will use 4-4-4-12 and at 1066 I will use 5-5-5-15. I will run threw the crysis benchmark for results
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Old 12-08-07, 03:24 PM   #8
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Default Re: Synced or Unlinked? Results inside!

So you're saying i'm loosing bandwidth from having setup in 'Sync' mode. Hmm, I shall have to test this myself.

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Old 12-08-07, 04:03 PM   #9
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Default Re: Synced or Unlinked? Results inside!

7x500 1:1 400 strap

Sync Mode

Int Buff'd iSSE2: 8517 MB/s
Float Buff'd iSSE2: 8517 MB/s

Memory latency

70ms


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Old 12-08-07, 04:04 PM   #10
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Default Re: Synced or Unlinked? Results inside!

My results with just the Sandra bandwidth test:

Sync Mode
Int Buff'd iSSE2: 7487 MB/s
Float Buff'd iSSE2: 7213 MB/s

Non-sync mode
Int Buff'd iSSE2: 6887 MB/s
Float Buff'd iSSE2: 6964 MB/s

So for me sync mode is faster.
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Old 12-08-07, 04:08 PM   #11
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Default Re: Synced or Unlinked? Results inside!

wow Mullet that's a hell of a FSB clock
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Old 12-08-07, 07:10 PM   #12
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Default Re: Synced or Unlinked? Results inside!

680i's memory control would be my guess as to why and mullet... drooping the multi like that is cheating!
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