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Windows 7: What's your memory assessment speed?

22 Mar 2010   #551
Swimaf

Windows 7 Ultimate x64
 
 

You say that we should change the timings of the RAM to get better performance?
Sorry but I am a novice with it. My 2Go DDR2 1066 (8500 corsair) has clocking like this: 5-5-5-18 2T O/C at 2.1V (initialy 1.8V), is that normal that I get only 4800Mb/s with the test or should I put the values as you did?


My System SpecsSystem Spec
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22 Mar 2010   #552
cabal06ba

Win7 Pro x64
 
 

Of course every system reacts differently to certain settings and a lot depends on chipset + processor (Intel vs. AMD), but you could just give it a try and compare the results, in my case it looked like this:
DDR2-1066 6-6-6-18-2T @ 2.2V (NB @ 2000Mhz): 12500 Mb/s
DDR2-800 4-4-4-12-2T @ 1.82V (NB @ 2200Mhz): 16500 Mb/s

Since you are running an Intel platform you don't really have to care about the Northbridge, just try with MemTest86+ if you can run DDR2-800 4-4-4-12-2T stable and then compare the winsat mem results. I would start with 1.9V and if that runs stable you can try reducing to the original 1.8V.
My System SpecsSystem Spec
22 Mar 2010   #553
Swimaf

Windows 7 Ultimate x64
 
 

Ok, I will try to put the timing to 4-4-4-12 2T 800Mhz (my FSB is limited to 400 because of my MB : 1600 max for the CPU...) without touching the voltage (2.1V is the recommended O/C value). For now I am transfering some big files from one of my two HD to the other so I will post the results of the tests later (~1h).Thanks for the advice

EDIT: I tried 5-5-5-18 and the system crashed before Windows could have been started. Now running with 6-6-6-15 and getting lower results (4750 instead of 4850)...
Is that linked with the fact that my FSB/DRAM ration is 1:1?
I have only one pin of 2Gb installed on my 2nd DDR2 slot (cause the first one is unusable, my Zalman CPU-fan is very big and hides it), could it explain the very bad performance I have compared with you?

Sorry for annoying you but I'd like to understand why I spent 50€ for that ****.
My System SpecsSystem Spec
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22 Mar 2010   #554
cabal06ba

Win7 Pro x64
 
 

Quote:
My 2Go DDR2 1066 (8500 corsair) has clocking like this: 5-5-5-18 2T.
I tried 5-5-5-18 and the system crashed
So the official specifications are 5-5-5-18 @ DDR2-1066 (533Mhz) but those timings don't even run at DDR2-800 (400Mhz) speed, that's weird?

Quote:
Is that linked with the fact that my FSB/DRAM ration is 1:1?
That's how it is supposed to be, if your FSB is 400Mhz then 1:1 simply means that your memory is running at DDR2-800 (=400Mhz x2 cause of DDR2) speed, as we wanted to try.

Quote:
I have only one pin of 2Gb installed on my 2nd DDR2 slot, could it explain the very bad performance I have compared with you?
Honestly, I don't really know if the results of this test reflect only RAM speed or speed AND size (can someone answer that?), but I would assume that it is the second case since your 4800 x 4 = 19200MB/s could be a rough idea of what you might get with 4 x 2GB @ 1066.

In any case, if you can't get lower timings to run stable with reduced clock speeds, then of course you should stay with 533Mhz (DDR2-1066) to get the best performance!
My System SpecsSystem Spec
22 Mar 2010   #555
Swimaf

Windows 7 Ultimate x64
 
 

Quote:
My 2Go DDR2 1066 (8500 corsair) has clocking like this: 5-5-5-18 2T.
I tried 5-5-5-18 and the system crashed
I have made a mistake, I meant that I tried with 6-6-6-18 and that it crashed.
Also tested 4-4-4-12 and then got bad results with winsat.

Quick summary:

5-5-5-18 = normal timing for a 800Mhz clocking (2x400 like you said rightly), 1.8V recommended
4-4-4-12 = works bur lower performance than with the normal timing
6-6-6-18 = Does not work at all (crash as Windows starts)

Now I will try to force the frequency of the RAM to 533Mhz (for now it is set on Auto, so 400) and 2.1V which is the recommended tension at this level.

Quote:
Honestly, I don't really know if the results of this test reflect only RAM speed or speed AND size (can someone answer that?), but I would assume that it is the second case since your 4800 x 4 = 19200MB/s could be a rough idea of what you might get with 4 x 2GB @ 1066.
Whether that is the solution I am the most happy man the day after tomorrow cause I will recuperate my 2nd pin of 2Gb, then I will make the same tests and tell you if it goes better!

EDIT: I reached 6400Mb/s by putting the RAM frequency to 1066 instead of 800 (Auto mode) so that means a +33% increase of the performance. Even if this is not 10000 or 15000 yet it becomes serious (at least more than the joke before).
My System SpecsSystem Spec
22 Mar 2010   #556
cabal06ba

Win7 Pro x64
 
 

Quote:
5-5-5-18 = normal timing for a 800Mhz clocking (2x400 like you said rightly), 1.8V recommended
4-4-4-12 = works bur lower performance than with the normal timing
6-6-6-18 = Does not work at all (crash as Windows starts)
That is very odd, because it's against everything I know about RAM!
- first of all try 5-5-5-15, as a rough rule of thumb the RAM usually works best when the last timing is the sum of timing 1+2+3
- at same speed lower timings should always bring better results, so your 4-4-4-12 result is surprising
- and the higher the timings the more stable the system usually runs, so your 6-6-6-18 crash is another mystery since your RAM should handle those timings without any problems

Can you post a screenshot of your SPD settings, such as this one below (you will have to select slot#2)?


Attached Images
What's your memory assessment speed?-.jpg 
My System SpecsSystem Spec
22 Mar 2010   #557
Swimaf

Windows 7 Ultimate x64
 
 

Here is what CPU-Z shows:



Quote:
That is very odd, because it's against everything I know about RAM!
- first of all try 5-5-5-15, as a rough rule of thumb the RAM usually works best when the last timing is the sum of timing 1+2+3
- at same speed lower timings should always bring better results, so your 4-4-4-12 result is surprising
- and the higher the timings the more stable the system usually runs, so your 6-6-6-18 crash is another mystery since your RAM should handle those timings without any problems
I am about to test again with the RAM frequency locked on 1066 this time. We'll see whether the results are the same or if they change.

EDIT: Ok, in 1066 mode these are some configurations I tested and their results:

4-4-4-12 = Big crash, GPU-fan at 100%, no boot possible.
4-4-4-15 = "
4-5-5-15 = "
5-5-5-15 = OK but < normal timing
5-6-6-16 = Normal timing, best performance (6400Mb/s)
5-6-6-17 = OK but < normal timing
5-6-6-18 = OK = normal timing
6-6-6-18 = OK but < normal timing
6-6-6-21 = OK but < normal timing

Didn't try with a "7" or even "8" but looks like each time there is a "4" in the equation nothing works...
My System SpecsSystem Spec
22 Mar 2010   #558
cabal06ba

Win7 Pro x64
 
 

Quote:
Didn't try with a "7" or even "8" but looks like each time there is a "4" in the equation nothing works...
No need to go for '7' or '8', higher numbers = slower performance so if '4' is too much for your system, stick to '5' and/or '6'. Btw, you could never expect 4-4-4-12 to run at 533Mhz, those timings were only meant for 400Mhz speed and even then there is no guarantee since SPD recommendation for your RAM is "only" 5-5-5-18.

Quote:
5-5-5-15 = OK but < normal timing
5-6-6-16 = Normal timing, best performance (6400Mb/s)
This is the only part about your system that I don't understand, usually 5-5-5-15 should be faster than 5-6-6-16.

But ok, as far as I can tell the EPP#1 settings (533Mhz-5-6-6-16) work best for you so no need to change anything about that. You can be happy with your results, since in my case 533Mhz was only stable with very bad timings (something like 8-6-6-20). So that is the only reason why I even tried the 4-4-4-12 timings @ 400Mhz - even though my SPD settings recommend "only" 5-5-5-18 for 400Mhz as well - and found out that I get the best results with those timings.

But every system is different, especially in our case it's hard to compare: Intel chipset, Dual-Core, 1 RAM Module vs. AMD chipset, Quad-Core, Northbridge & RAM Controller integrated into CPU (!), 4 RAM Modules.

Let's just wait and see what will happen to your speedtest results as soon as you installed more RAM.
My System SpecsSystem Spec
23 Mar 2010   #559
Swimaf

Windows 7 Ultimate x64
 
 

I heard that a 1:1 FSB/DRAM ratio is better for the system than any other ones. Indeed, before went to bed yesterday I tried an ultimate OCCT test (only 30 min) with the best timing ever: 5-6-6-16/2.1V/533Mhz/Vnb Auto/Vsb Auto and got a wonderful crash so I did a "rage exit".
This morning I have decreased the RAM frequency back to 800Mhz in order to lock the ratio at 1:1 and then the system looks quite stable since about 30min.

Quote:
Let's just wait and see what will happen to your speedtest results as soon as you installed more RAM.
I'll go and bring back my 2nd module at the station at 15 o'clock , this afternoon gonna be full of tests!

Thanks again for your piece of advice and help which are always appreciated
My System SpecsSystem Spec
23 Mar 2010   #560
DreemWarrior

Windows 7 ultimate X64
 
 

For the record...
at 9-9-9=24
My System SpecsSystem Spec
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