128mb to 256mb upgrade slows

[burr]

I have a ASUS CUV4X motherboard with 128Mb memory. I added 256Mb p133 memory and the computer slowed down. I am timing the speed that a large 19 page Word document takes to spool to the printer. With 384Mb, 40 secs. 256Mb 25 secs and with the 128Mb, 12 secs.Other things are noticible also. I see other comments in tek-tips about the ASUS motherboard requiring Registered ram. I am reading in the motherboard manual that the board supports SPD. Serial Presence Detect. The book says there is an EEPROM on the RAM Memory module that Stores Memory type,size,speed,ect. Is this 'Registered Ram' also SPD? Does all Memory support SPD? Any help with this?

Burr Stephens
Burr Stephens
burr-stephens@worldnet.att.net

 

[CitrixEngineer]

No motherboard "requires" registered RAM, but it certainly helps - especially with DDR motherboards, most of which can only be fully populated with registered RAM.

You may find this link helpful - apparently the VIA chipset your board (and many others) uses has a poor default interleave setting. There is a utility available for tweaking memory called WPCREDIT.

http://www.viahardware.com/memtweakguide1.htm

Note: if you are not comfortable using this type of utility, then I must strongly advise against it - I would not want any advice you have received from Tek-Tips to permanently damage your computer!

I hope this is useful

 

[Jakespeare]

I personally am missing information before I will give input.

WHAT PROCESSOR ? ( Does it happen to be a Celeron 66 MHz ?)

What type of RAM did you buy ? ( Genuine Micron, or some really generic, - read low-grade, RAM ?)

** WHAT BIOS VERSION DO YOU HAVE ?

WHAT OS ? ( Operating system )


On your last questions, I will supply you with a link:

First, I don't want to type for 10 minutes and not even know if you will even ever come back to read;
Second, this is a REALLY great webpage for HARDWARE 101;


Also: You can find REGCLEAN all over the Internet.
RegClean 4.1a is the last version. Make sure you get that.
Here is one spot to find it:

http://www.pcguide.com/topic.html

You can probably find all the answers you have to your Memory / RAM questions.

 

[burr]

Thanks for the replys... I bought my first computer in 1979 and am not afraid to tackle the hardware. The WPCRSET file is no longer supported.

The processor is an 800 mz Intell. The RAM came from Office MAX... Maybe a problem. Win 98. I don't know the name of the BIOS. I'll have to reboot to get it.

I will check the web page that you listed.

Burr Stephens
Burr Stephens
burr-stephens@worldnet.att.net

 

[JLKBUI]

Asus made at least ten versions of the CUV4X. Which one do you have? And have you checked for for their latest BIOS upgrade? Let us in on both.

 

[burr]

The book says: ASUS CUV4x, Jumper Free PC 133/VC133 AGP Pro/4x Motherboard. I'll check ASUS for Bios update.
Burr Stephens
burr-stephens@worldnet.att.net

 

[grygst76]

make sure all modules are pc133 and you have the jumpers (if there is one) set for the 133 ram more then likely it is bottlenecking by one piece being pc100 or vise versa also check this out as wellTo use the MaxPhysPage entry to specify the amount of RAM that is available to Windows, add the following line in the [386Enh] section of the System.ini file


MaxPhysPage=<nnn>

where <nnn> is a hexidecimal number that determines the number of memory pages available to Windows. A page is 4096 bytes of RAM for 486 and Pentium processors.

When the MaxPhysPage entry is used, the following formula is used to determine the amount of RAM available to Windows:

4096 X MaxPhysPage (decimal) = Amount of RAM available to Windows in bytes

Therefore, to limit Windows to 32 MB of memory, use the following formula to determine the MaxPhysPage entry:

(32 * 1048576) / 4096 = 8192 (decimal) or 02000 (hexadecimal)

NOTE: One megabyte is 1,048,576 bytes.

The following table list some common RAM amounts and the corresponding MaxPhysPage entry:

Amount of RAM
available to Windows (MB) (Bytes) MaxPhysPage entry
--------------------------------------------------------------
960 1,006,632,960 MaxPhysPage=3C000
896 939,524,096 MaxPhysPage=38000
832 872,415,323 MaxPhysPage=34000
768 805,306,368 MaxPhysPage=30000
704 738,197,504 MaxPhysPage=2C000
640 671,088,640 MaxPhysPage=28000
576 603,979,776 MaxPhysPage=24000
512 536,870,912 MaxPhysPage=20000
448 469,762,048 MaxPhysPage=1C000
384 402,653,184 MaxPhysPage=18000
320 335,544,320 MaxPhysPage=14000
256 268,435,456 MaxPhysPage=10000
224 234,881,024 MaxPhysPage=0E000
192 201,326,592 MaxPhysPage=0C000
160 167,772,160 MaxPhysPage=0A000
128 134,217,728 MaxPhysPage=08000
96 100,663,296 MaxPhysPage=06000
88 92,274,688 MaxPhysPage=05800
80 83,886,080 MaxPhysPage=05000
72 75,497,472 MaxPhysPage=04800
64 67,108,864 MaxPhysPage=04000
56 58,720,256 MaxPhysPage=03800
48 50,331,648 MaxPhysPage=03000
40 41,943,040 MaxPhysPage=02800
32 33,554,432 MaxPhysPage=02000
24 25,165,824 MaxPhysPage=01800
16 16,777,216 MaxPhysPage=01000
12 12,582,912 MaxPhysPage=00C00
08 8,388,608 MaxPhysPage=00800