A7V8X-X and PC3200/2700 Ram units

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servtech

Hello everybody,

sorry for my english, but I'm french...

I've bought an Asus A7V8X-X motherboard and tried to install on it a pair of
PC3200 Ram memories (2 x 512Mo).
My computer didn't start ! (long "bips", without BIOS display)
I put off one of the Ram units (slot 2) and... my computer worked well !!!

I asked to Asus site if a good reason for this, but never have any answer !
:-((

Is somebody here could know what is the problem ? J've changed my PC3200 by
another pair of Ram units (2 x 512Mo of PC2700), and the problem is EXACTLY
the same as with the PC3200 modules.

Thanks a lot to everybody who could tell me what to do about this problem

ATOMIZER (Paris/France)
 
I forgot to say that I've downloaded and installed the last BIOS version for
Asus A7V8-X available on Asus Internet site...

Thank you for your attention.
 
had a similar issue.

built computer using this board and 2*512m ddr333 (pc2700) about 2 months
ago.
worked ok for about a month then stopped recognizing anything more than the
first slot.

i know the memory works, tested it in 2 other rigs, also tried other other
memory in this
board. have run memtest86 for overnight on all memory sticks with no
issues, ran
prime 95 for a couple days without issue.

have been in touch with asus tech support but they have been of little help.

amd 2500+
asus a7v8x-x
1010 bios
512m ddr333
sapphire 9800 pro
antec 430w ps

good luck, any suggestions are welcome.

thanks
john
 
=|[ servtech's ]|= said:
Hello everybody,

sorry for my english, but I'm french...

I've bought an Asus A7V8X-X motherboard and tried to install on it a pair of
PC3200 Ram memories (2 x 512Mo).
My computer didn't start ! (long "bips", without BIOS display)
I put off one of the Ram units (slot 2) and... my computer worked well !!!

I asked to Asus site if a good reason for this, but never have any answer !
:-((

Is somebody here could know what is the problem ? J've changed my PC3200 by
another pair of Ram units (2 x 512Mo of PC2700), and the problem is EXACTLY
the same as with the PC3200 modules.

Thanks a lot to everybody who could tell me what to do about this problem

ATOMIZER (Paris/France)
Click to expand...

Lol! I dont believe it, you should be able to boot and run the same mem at
100 - 133MHz or 166 instead of 200

come on try the Bios you crazy beachbum!
 
servtech said:
I forgot to say that I've downloaded and installed the last BIOS version
for Asus A7V8-X available on Asus Internet site...

Thank you for your attention.
Click to expand...

I think the previous message was asking you to check your memory speed
settings in BIOS (make sure set at 166/333 - can't remember what it
says:-). The KT400 chipset had limitations regarding memory modules. The
section below pulled from Asus FAQs

______________________________________________________________
"PC3200 maximum to 2 banks only and PC2700 maximum to 4 banks only"
Could you explain more in detail?

Simply to say, one single sided DIMM means one bank, one double sided DIMM
means two banks, two single sided DIMMs means two banks, etc.
Hence, e.g. you can install one pcs double sided PC3200 or two pcs single
sided PC3200
_______________________________________________________________

I personally would avoid PC3200 on this board because of the above
limitation. I think you can run async (cpu333/mem400) but with little speed
benefit if any. PC2700 seems to be the sweet spot for this chipset.

You should be OK with 2 x PC2700 memory though (in any combination) make
sure it is set as 166/333 (can't remember what the screen says) in the
BIOS.

Karl
 
"Karl" a dit :
I think the previous message was asking you to check your memory speed
settings in BIOS (make sure set at 166/333 - can't remember what it
says:-). The KT400 chipset had limitations regarding memory modules. The
section below pulled from Asus FAQs

______________________________________________________________
"PC3200 maximum to 2 banks only and PC2700 maximum to 4 banks only"
Could you explain more in detail?

Simply to say, one single sided DIMM means one bank, one double sided DIMM
means two banks, two single sided DIMMs means two banks, etc.
Hence, e.g. you can install one pcs double sided PC3200 or two pcs single
sided PC3200
_______________________________________________________________

I personally would avoid PC3200 on this board because of the above
limitation. I think you can run async (cpu333/mem400) but with little speed
benefit if any. PC2700 seems to be the sweet spot for this chipset.

You should be OK with 2 x PC2700 memory though (in any combination) make
sure it is set as 166/333 (can't remember what the screen says) in the
BIOS.

Karl
Click to expand...

Thanks a lot for your answer ! I just understood what could be the problem
with the PC3200 Ram units :
all the Ram units I bought were "double-side" (chips on every side)
In saying "2 banks only", it is normal that I had a problem with a paire of
PC3200 units 512Mo "double-side" (so, I had "4 banks" with this Ram units).

BUT (!!!) : "4 banks" sould be acceptable with PC2700 and it wasn't too :
the problem was exactly the same like with the PC3200 Ram units (the PC2700
is also 512Mo "double-side")

So, I continue to believe that there is a problem with the A7V8X-X
motherboard. I confirm that I tried (in starting with only ONE Ram unit) to
save BIOS params manualy, in giving the good values. But noway, the PC didn'
start when I installed the second Ram unit...

Well, I continue to read all comments about that !

Thanks a lot for your conribution.

ATOMIZER (Paris-France)

=============================
Subsidiary question : why Asus NEVER answer to the mails we can send to them
???????? (I've sent two mails now, and they are "read" but, no answer...
(not a "very good commercial politic system" !)
 
"John" a dit :
had a similar issue.

built computer using this board and 2*512m ddr333 (pc2700) about 2 months
ago.
worked ok for about a month then stopped recognizing anything more than the
first slot.

i know the memory works, tested it in 2 other rigs, also tried other other
memory in this
board. have run memtest86 for overnight on all memory sticks with no
issues, ran
prime 95 for a couple days without issue.

have been in touch with asus tech support but they have been of little help.

amd 2500+
asus a7v8x-x
1010 bios
512m ddr333
sapphire 9800 pro
antec 430w ps

good luck, any suggestions are welcome.

thanks
john
Click to expand...

Well, I'm afraid "something's wrong" with this kind of motherboard !!!

Nearly the same config *, and EXACTLY the same problem ? We cann't be
responsible...
What says Asus about that issue ? (they NEVER answered to my questions, by
e-mail... :-((

*
Amd 2800+
Asus A7V8X-X
1010 BIOS
512Mo DDR 333 PC2700 "double-side" (I expected 1Go with 2 units ! :-((
NVidia FX5700

Waht the params are "default" (automatic) or manualy confugured on the
motherboard, the problem with the Ram, PC3200 or PC2700, is exactly the same
for me : my PC NEVER started with 2 units of Ram "double-side" (= "4 banks")
installed.

Nota, I installed some "old" PC133 DDR PC2100 in this config :
Slot 1 : 1 "double-side" PC2100 512Mo Ram unit
Slot 2 : 1 "simple-side" PC2100 128Mo Ram unit
Slot 3 : 1 "simple-side" PC2100 128Mo Ram unit
In this config, my PC start normaly and works well, but the proc runs only
on 1660MHz.

I just bought now a PC2700 1Go Ram unit, and I'll come back her to say you
what append when it will be installed

Thanks a lot for your contribution

ATOMIZER (Paris-France)
 
"Creeping Stone" a dit :
Lol! I dont believe it, you should be able to boot and run the same mem at
100 - 133MHz or 166 instead of 200
Click to expand...
Yes, we all know that we should... BUT !!!!!!!!! (read also other
contributors answer...)
come on try the Bios you crazy beachbum!
--
Click to expand...
?? Have a french translation (or other way to say what you want ?) for this
late sentence, PLZ ? (I don't undestand what you mean)

So, thanks for your contribution and may be your (future ?) help !

ATOMIZER (Paris-France)
 
=|[ servtech's ]|= said:
"Creeping Stone" a dit :
Lol! I dont believe it, you should be able to boot and run the same mem at
100 - 133MHz or 166 instead of 200
Click to expand...
Yes, we all know that we should... BUT !!!!!!!!! (read also other
contributors answer...)
come on try the Bios you crazy beachbum!
Click to expand...
Click to expand...
maybe talking to myself ;)
wasnt sure, you were french because post was so fluent,
I thought you might be impersonating like inspector Clusoe
but your ip is french so you must be!
 
"Creeping Stone" a dit :
maybe talking to myself ;)
wasnt sure, you were french because post was so fluent,
I thought you might be impersonating like inspector Clusoe
but your ip is french
Sure...

so you must be!
Click to expand...
or not ! ;-))
(I could only leave in France (my IP is OK with that) BUT not necessary...
to be French !
Well, I am French and I'm leaving near Paris... and always have a problem
with my Asus A7V8X-X motherboard !)

A+

ATOMIZER (Paris - France)
 
=|[ servtech's ]|= said:
... and always have a problem
with my Asus A7V8X-X motherboard !)
Click to expand...
It should settle with the right settings *G
If it stays flakey, slowing cpu can fix cpu related and power and heat
related problems.
Mine has been thrashed and cooked and twisted and fumbled and
its still going strong.

There might be some bad bios revisions though, mine had problems with rev
1007 -i think.

gl,
 
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