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Asus A7N8X-X + 3x VS512MB400 ?


henriette

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Hiya :):

 

If I'm right you should see my system "somewhere here", if not, I will tell about it. Just ask please.

 

I got 3x 512MB Infineon DDR PC400 CL3, double sided on my Asus A7N8X-X nforce2-400!!!!!

BIOS updated to 1011 = latest!

Runs ok.

CPU: AMD Athlon1800+ (running at 1920GHz - slightly overclocked).

Question:

I wanna buy 3x VS512MB400 - get them for EUR 40,- each.

Are they fully compatible with my board ?

I read "...Corsair recommends XMS memory ... VS is NOT RECOMMENDED ...".

How come, when its in the list of my board there :confused:

Can I use them anyway :confused:

 

BIOS (time being with above Infineon RAM):

CPU ext. freq: 166MHz

Memory freq: AUTO

resulting freq: AUTO

memory timings: optimal

SDRAM active precharge delay: 7

SDRAM RAS to CAS delay: 3

SDRAM RAS precharge delay: 3

SDRAM CAS latency: 2,5T

 

note: ain't got the money to buy more expensive RAM. :(:

 

Ever so thankful for an answer

henriette :): [sorry for my poor English]

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  • Corsair Employees

I would suggest to just get VS2GBKit400C3 and replace what you have with 2 modules for best performance at these settings but load setup defaults first.

CPU ext. freq: 166MHz

Memory Voltage 2.7 Volts

Memory freq: 100%

resulting freq: 166MHz

memory timings: optimal

SDRAM active precharge delay: 7

SDRAM RAS to CAS delay: 3

SDRAM RAS precharge delay: 3

SDRAM CAS latency: 2,5T

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Hi RAM GUY :):

 

you suggest VS2GBKit400C3.

 

Corsair homepage says "NO VS FOR NVIDIA nForce2, only "XMS"!!!

My board is: "ASUS A7N8X-X" > NVIDIA nForce2-400 Chipset! :!: :!: :!:

I sent you an email yesterday through corsairwebsite, saying:

>I found "CMX512-3200C2 - DDR-400"

http://www.amazon.de/Corsair-CMX512-3200C2-512MB-PC400-Arbeitsspeicher/dp/B0000AKGTI/ref=pd_bxgy_ce_text_b/303-1112946-4022602

 

Would you be kind enough to tell me if this is the absolute right one that works with my board ?

Note: I want to purchase three of them (512MB).

Also note: I am NOT a gamer.

 

Update:

today I received your email, saying:

"...you should use:

http://www.corsairmemory.com/corsair/configurator_search_results.html"

This was of course the first thing I did. There I found the above RAMS.

 

Ever so thankful for a reply

henriette :):

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please allow me the question why you still recommend VS-RAMs, although Corsair says "ONLY XMS for NVIDIA nForce2!".

WHY shouldn't I use 3 modules :confused:

 

The reason I wanted 3 x 512 is in case 1 of them breaks, I would still have 1024MB left :!:

 

I would buy "CMX512-3200C2" if you say that they're really ok.

 

I would be more than thankful if you would explain this to me, since I'm still a beginner concerning RAM.

 

Please help henriette to understand :o:

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Hiya Wired :):

 

now I understand :D:

 

Thank you sooo much for explaining this to me.

 

... just ... for the time being I got 3x 512MB Infineon DDR PC400 CL3 double sided built in (1536MB), and it works.

Would you recommend me to take 1 module out :confused:

 

By buying 2x CMX512-3200C2 I would have "only" 1024MB then. Do you think that's sufficient :confused:

 

henriette

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is your system running at 333 or 400 mhz?

How can I tell this - where to find out :confused:

My board is for DDR400.

 

In Everest I see:

"Frontsidebus: 333MHz"

"Memorybus: 333MHz"

"memoryspeed: PC3200 (200MHz)"

"memory timings: 166MHz > 2,5-3-3-7 (CL-RCD-RP-RAS)".

>> 2,5-3-3-7 are the actual timings.

 

My CPU runs at 166MHZ.

 

note: I need to buy the RAMs, cause they won't be THAT much longer available on the market. In addition I bought this board 1 year ago, won't buy a "more-up-to-date-one".

Therefore DDR2 is out of the question - understand.

 

Thank you ever so much for your patience with me.

henriette :):

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Hello henriette,

 

With your particular CPU and motherboard combo you should run your memory only at 166MHz (DDR333/PC2700). Attempting to run your memory at a faster actual clock speed than your CPU's actual FSB clock speed on your particular platform will likely result in significant stability problems.

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the manual + the support say:

"for ASUS A7N8X-X use ONLY(!) DDR400" :!:

So I see it just as how I do the settings for the memory.

 

you wrote:

Attempting to run your memory at a faster actual clock speed than your CPU's actual FSB clock speed on your particular platform will likely result in significant stability problems.

please explain to me, how I have to set my BIOS in this case.

Asking urgently for help :o: [completely confused].

henriette

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  • Corsair Employees

I have already answered this question!

I would suggest to just get VS2GBKit400C3 and replace what you have with 2 modules for best performance at these settings but load setup defaults first.

CPU ext. freq: 166MHz

Memory Voltage 2.7 Volts

Memory freq: 100%

resulting freq: 166MHz

memory timings: optimal

SDRAM active precharge delay: 7

SDRAM RAS to CAS delay: 3

SDRAM RAS precharge delay: 3

SDRAM CAS latency: 2,5T

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RAM GUY :):

 

thank you sooo much for answering.

 

You suggest VS2GBKit400C3. 1 module costs EUR 160.- (1 module would be more than enough for me = 2GB).

 

You NEVER answered my question which I asked you several times:

why do you still recommend VS-RAMs, although Corsair says "ONLY XMS for NVIDIA nForce2!". > I got NVIDIA nForce2 SPP - according to "memtest86 v3.3"

 

The "CMX512-3200C2" (2x)> EUR 160.-, too. 1024MB should be ok for me, although I got 3x512 at the moment.

What do you think ?

 

Yesterday I ran "memtest86 v3.3" with my 3x512 Infineon DDR PC400 CL3.

According to Memtest:

FSB: 167MHz (well, instead 166)

Settings RAM: 167MHz (DDR334)

CAS: 2,5-3-3-7 / Dual-channel (128 bits).

 

The problem with memtest is (read it in a forum - it's definite!):

saying: [trying to translate]"some boards - example A7N8X-X - have probs with Dual-channel function. this means that memtest sees modules as errorfree while these cause thousands of errors, as soon as more than 1 module are built in the PC.

Since there is no way to disable dualchannel in BIOS (meaning A7N8X-X) the only way is exchanging all modules by certified modules."

 

I ran memtest anyway, after 2 hours > pass complete, no errors.

ok, I just wanted to tell you this, although the result is really nothing to rely on. Better say "forget it".

 

Now once I do replace the modules by either 1x VS2GBKit400C3 or 2x "CMX512-3200C2" (latter recommended by corsair!!!), I first (??) have to set "pagefile.sys".

 

Then you say:

load setup defaults first.

ok, but after "load setup defaults" BIOS will IMHO load windows right away. What to do then ? How to avoid it - which tab ?

 

I want to "load setup defaults" and RIGHT AWAY do ALL settings in BIOS (which I have to IMHO) plus - as you said, and according to the module/s:

CPU ext. freq: 166MHz

Memory Voltage 2.7 Volts

Memory freq: 100%

resulting freq: 166MHz

memory timings: optimal

SDRAM active precharge delay: 7

SDRAM RAS to CAS delay: 3

SDRAM RAS precharge delay: 3

SDRAM CAS latency: 2,5T

 

How to manage the BIOS not to load Windows ?

 

Please be patient with me just one more time, and please answer my "VS" / "XMS" Question.

 

This subject won't let me sleep anymore - being a newbie.

Please help me :o:

henriette :):

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  • 2 weeks later...
  • Corsair Employees

Suggestions are made on a case by case basis on the forum and some of the MB's based on this chipset were to picky for generic style memory and why that statement to use our XMS modules, but your MB should not be an issue.

 

And I would use a Boot CD or Floppy like for http://www.memtest.org and you do not exit the Bios just load setup defaults and then set the settings andthen exit the Bios.

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Hi RAM GUY,

 

All I need to know is:

"VS512MB333" (2,5-3-3-7-2T)

or

"VS512MB400" (2,5-3-3-8-2T)

the latter-one is slightly cheaper. But does "7" /"8" matter that much ?

 

BIOS:

1. Meanwhile I have set the "CPU Freq multiple" to its original "10.5" = 1750MHz again.

2. I took out one of the 3 Infineons. Now I got 1024MB.

3. "Memory freq" > I got only either "by SPD" or "auto", for other options like "100%" = "SYNC" I had to set "System performance" to "user defined".

4. "memory voltage" is called "DDR Reference Voltage" and set to 2,6V [still Infineon, since waiting for your answer what exactly to buy] :!:

 

Hoping to receive a reply that will finally let me know which-one to purchase after all this time.

 

henriette :)

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... just there is no telling "unbuffered" (just at _EEC_ "unbuffered", if this means the same :confused: )with "VS512MB333", whereas "VS512MB400" is definitly unbuffered.

My board takes ONLY unbuffered modules.

 

This will be my last question to you, then you will finally get "rid" of me.

 

Thank you soo much for a last reply.

henriette :praise:

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