Putting ram in bottom slot on Wallsteet?

Can anyone tell me how to install ram in the bottom slot of a 233mhz Wallsteet PB?
Also,what is the max amount of ram that can be installed in the bottom slot? I have 256mg in the top slot and 32mg in the bottom and want to put 128mg in place of the 32mg.
The 128mg was originally in the top slot.
Any help would be greatly appreciated.
Thanx noj
g3.366.ibook.576ram-[2]s/l. 333grape imacs [1]288mgram[1]128ram both osX Mac OS X (10.3.8)
g3.366.ibook.576ram-[2]s/l. 333grape imacs [1]288mgram[1]128ram both osX Mac OS X (10.3.8)

noj,
The Wallstreet can handle a maximum of 512MB (2 x 256MB); the memory for the lower/bottom slot requires a low-profile module. Measure your 128MB module; if it is less than 1.5 inches tall, it should work in the bottom slot.
Also, the early iMac, Wallstreet, and Lombard require special 256MB modules made specifically for these computers; the 32/64/128MB modules can be generic as long as they meets the Wallstreet specs. Here is an example of the memory for the Wallstreet:
http://eshop.macsales.com/shop/memory/iBooks-PowerBooks/G3-Lombard/
Andrey pointed you to a good takeapart guide...here is the specific model:
http://www.pbfixit.com/Guide/3.0.0.html

Similar Messages

Early 2008 Macbook Pro - Bad RAM or Bad Slot(s)?

Firstly, allow me to apologize for any formatting errors on this post; I'm putting it together from my phone. I comprised a collection of photos and screen shots to aid in my plea, but I can't find a way to upload them from here. So I'll do my best to explain things colorfully. :)
Specs:
Early 2008 15" Macbook Pro
Model #: A1260
OS X Mountain Lion 10.8.Something.
Recently upgraded hard drive from stock 250GB to Seagate Momentus 500 GB.
Strange, multicolored split-second glitches have occurred three times the past two days.
This morning, my computer booted to the gray screen, as normal. Apple logo and spinning logo appeared.
Here's the issue: there is a vertical gray strip going straight through the middle of the monitor that cuts through part of the apple and half of the spinning wheel.
System stays on that screen for a few seconds, then reboots. Every time. Resetting PRAM/NVAM does nothing.
The RAM is stock. I've done the following:
RAM stick A in bottom slot - 3 beeps and no start-up.
RAM stick A in top slot - gray screen, apple & rotating logos, vertical gray line, restarts.
RAM stick B in bottom slot - 3 beeps and no start-up.
RAM stick B in top slot - gray screen, apple & rotating logos, vertical gray line, restarts.
Bad RAM or bad slots?
Thank you!
JS

IT LIVES!!!!!!
I reset the PRAM & SMC a few times. It froze on this screen when the progress bar got about halfway.
Then this... I left it on this screen for a while, then restarted. AND IT BOOTED LIKE NORMAL!
This is the problem report:
Interval Since Last Panic Report: 258499 sec
Panics Since Last Report:          1
Anonymous UUID:                    E99EE298-1EAD-9817-ABDF-BF6E43C51AFB
Fri Sep 6 16:56:10 2013
panic(cpu 1 caller 0xffffff80154b8655): Kernel trap at 0xffffff7f96a99154, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x0000000000000010, CR3: 0x000000000e750000, CR4: 0x0000000000000660
RAX: 0x0000000000000001, RBX: 0xffffff807fe44000, RCX: 0xffffff8020932c28, RDX: 0xffffff80885c3a38
RSP: 0xffffff80885c3b60, RBP: 0xffffff80885c3b60, RSI: 0x0000000000000000, RDI: 0x0000000000000000
R8: 0x0000000000000000, R9: 0x00000000000003ff, R10: 0xffffffffffffffff, R11: 0x00000000ffffffff
R12: 0xffffff807fe44000, R13: 0x0000000000000000, R14: 0x0000000000000002, R15: 0x0000000000000000
RFL: 0x0000000000010246, RIP: 0xffffff7f96a99154, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000000010, Error code: 0x0000000000000000, Fault CPU: 0x1
Backtrace (CPU 1), Frame : Return Address
0xffffff80885c3800 : 0xffffff801541d626
0xffffff80885c3870 : 0xffffff80154b8655
0xffffff80885c3a40 : 0xffffff80154ce17d
0xffffff80885c3a60 : 0xffffff7f96a99154
0xffffff80885c3b60 : 0xffffff7f96a82844
0xffffff80885c3bb0 : 0xffffff7f96a8279a
0xffffff80885c3bd0 : 0xffffff7f96a5e28e
0xffffff80885c3c00 : 0xffffff7f95ab33a0
0xffffff80885c3c40 : 0xffffff7f95ab330f
0xffffff80885c3c60 : 0xffffff7f95ab875c
0xffffff80885c3cf0 : 0xffffff7f95ab0e50
0xffffff80885c3d20 : 0xffffff7f95b021cf
0xffffff80885c3d70 : 0xffffff8015833efb
0xffffff80885c3dc0 : 0xffffff8015865297
0xffffff80885c3e30 : 0xffffff801549874f
0xffffff80885c3e80 : 0xffffff8015420b3d
0xffffff80885c3eb0 : 0xffffff8015410448
0xffffff80885c3f00 : 0xffffff801541961b
0xffffff80885c3f70 : 0xffffff80154a6536
0xffffff80885c3fb0 : 0xffffff80154ce9e3
      Kernel Extensions in backtrace:
         com.apple.iokit.IOGraphicsFamily(2.3.7)[990D1A42-DF16-3AB9-ABC1-6A88AC142244]@0 xffffff7f95aa7000->0xffffff7f95adefff
            dependency: com.apple.iokit.IOPCIFamily(2.7.3)[1D668879-BEF8-3C58-ABFE-FAC6B3E9A292]@0xffff ff7f95a68000
         com.apple.NVDAResman(8.1.2)[96AE69DE-8A37-39D0-B2D3-D8446A6AA670]@0xffffff7f95a fe000->0xffffff7f95da3fff
            dependency: com.apple.iokit.IOPCIFamily(2.7.3)[1D668879-BEF8-3C58-ABFE-FAC6B3E9A292]@0xffff ff7f95a68000
            dependency: com.apple.iokit.IONDRVSupport(2.3.7)[6C8CFC18-75F0-3DEF-86C7-CEB2C1FD6BB1]@0xff ffff7f95aea000
            dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[990D1A42-DF16-3AB9-ABC1-6A88AC142244]@0 xffffff7f95aa7000
         com.apple.GeForce(8.1.2)[7EC545A4-4B57-32F1-8DC3-C31023AFBDCB]@0xffffff7f96a5a0 00->0xffffff7f96b27fff
            dependency: com.apple.NVDAResman(8.1.2)[96AE69DE-8A37-39D0-B2D3-D8446A6AA670]@0xffffff7f95a fe000
            dependency: com.apple.iokit.IONDRVSupport(2.3.7)[6C8CFC18-75F0-3DEF-86C7-CEB2C1FD6BB1]@0xff ffff7f95aea000
            dependency: com.apple.iokit.IOPCIFamily(2.7.3)[1D668879-BEF8-3C58-ABFE-FAC6B3E9A292]@0xffff ff7f95a68000
            dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[990D1A42-DF16-3AB9-ABC1-6A88AC142244]@0 xffffff7f95aa7000
BSD process name corresponding to current thread: WindowServer
Mac OS version:
12E55
Kernel version:
Darwin Kernel Version 12.4.0: Wed May 1 17:57:12 PDT 2013; root:xnu-2050.24.15~1/RELEASE_X86_64
Kernel UUID: 896CB1E3-AB79-3DF1-B595-549DFFDF3D36
Kernel slide:     0x0000000015200000
Kernel text base: 0xffffff8015400000
System model name: MacBookPro4,1 (Mac-F42C89C8)
System uptime in nanoseconds: 36733888944
last loaded kext at 27900573190: com.apple.driver.AudioAUUC 1.60 (addr 0xffffff7f96d0c000, size 32768)
loaded kexts:
com.apple.driver.AudioAUUC 1.60
com.apple.iokit.IOBluetoothSerialManager 4.1.4f2
com.apple.driver.AppleTyMCEDriver 1.0.2d2
com.apple.filesystems.autofs 3.0
com.apple.driver.AppleHDAHardwareConfigDriver 2.3.7fc4
com.apple.driver.AppleHDA 2.3.7fc4
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.ApplePolicyControl 3.4.5
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleLPC 1.6.0
com.apple.GeForce 8.1.2
com.apple.driver.AppleUpstreamUserClient 3.5.10
com.apple.driver.AppleSMCPDRC 1.0.0
com.apple.driver.AppleSMCLMU 2.0.3d0
com.apple.iokit.IOBluetoothUSBDFU 4.1.4f2
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport 4.1.4f2
com.apple.driver.AppleMuxControl 3.4.5
com.apple.driver.AppleBacklight 170.2.5
com.apple.driver.AppleMCCSControl 1.1.11
com.apple.nvidia.NVDAStartup 8.1.2
com.apple.driver.SMCMotionSensor 3.0.3d1
com.apple.driver.AppleUSBTCButtons 237.1
com.apple.driver.AppleUSBTCKeyEventDriver 237.1
com.apple.driver.AppleUSBTCKeyboard 237.1
com.apple.driver.AppleIRController 320.15
com.apple.iokit.SCSITaskUserClient 3.5.5
com.apple.driver.XsanFilter 404
com.apple.driver.AppleFileSystemDriver 3.0.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 34
com.apple.iokit.IOAHCIBlockStorage 2.3.1
com.apple.driver.AppleAHCIPort 2.5.2
com.apple.driver.AppleIntelPIIXATA 2.5.1
com.apple.driver.AppleUSBHub 5.5.5
com.apple.driver.AirPortBrcm43224 600.36.17
com.apple.driver.AppleFWOHCI 4.9.6
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.iokit.AppleYukon2 3.2.3b1
com.apple.driver.AppleUSBEHCI 5.5.0
com.apple.driver.AppleUSBUHCI 5.2.5
com.apple.driver.AppleEFINVRAM 1.7
com.apple.driver.AppleRTC 1.5
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleACPIButtons 1.7
com.apple.driver.AppleSMBIOS 1.9
com.apple.driver.AppleACPIEC 1.7
com.apple.driver.AppleAPIC 1.6
com.apple.driver.AppleIntelCPUPowerManagementClient 196.0.0
com.apple.nke.applicationfirewall 4.0.39
com.apple.security.quarantine 2.1
com.apple.driver.AppleIntelCPUPowerManagement 196.0.0
com.apple.iokit.IOSerialFamily 10.0.6
com.apple.kext.triggers 1.0
com.apple.driver.DspFuncLib 2.3.7fc4
com.apple.iokit.IOAudioFamily 1.8.9fc11
com.apple.kext.OSvKernDSPLib 1.6
com.apple.iokit.IOSurface 86.0.4
com.apple.iokit.IOBluetoothFamily 4.1.4f2
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.AppleSMBusPCI 1.0.11d0
com.apple.nvidia.nv50hal 8.1.2
com.apple.NVDAResman 8.1.2
com.apple.driver.IOPlatformPluginFamily 5.3.0d51
com.apple.iokit.AppleBluetoothHCIControllerUSBTransport 4.1.4f2
com.apple.iokit.IOFireWireIP 2.2.5
com.apple.driver.AppleHDAController 2.3.7fc4
com.apple.iokit.IOHDAFamily 2.3.7fc4
com.apple.driver.AppleGraphicsControl 3.4.5
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.driver.AppleSMBusController 1.0.11d0
com.apple.iokit.IONDRVSupport 2.3.7
com.apple.iokit.IOGraphicsFamily 2.3.7
com.apple.driver.AppleSMC 3.1.4d2
com.apple.driver.AppleUSBMultitouch 237.3
com.apple.iokit.IOUSBHIDDriver 5.2.5
com.apple.driver.AppleUSBMergeNub 5.5.5
com.apple.driver.AppleUSBComposite 5.2.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.5.5
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOATAPIProtocolTransport 3.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.5
com.apple.iokit.IOAHCIFamily 2.3.1
com.apple.iokit.IOATAFamily 2.5.1
com.apple.iokit.IOUSBUserClient 5.5.5
com.apple.iokit.IO80211Family 530.4
com.apple.iokit.IOFireWireFamily 4.5.5
com.apple.iokit.IONetworkingFamily 3.0
com.apple.iokit.IOUSBFamily 5.6.0
com.apple.driver.AppleEFIRuntime 1.7
com.apple.iokit.IOHIDFamily 1.8.1
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 220.3
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.DiskImages 345
com.apple.iokit.IOStorageFamily 1.8
com.apple.driver.AppleKeyStore 28.21
com.apple.driver.AppleACPIPlatform 1.7
com.apple.iokit.IOPCIFamily 2.7.3
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
Model: MacBookPro4,1, BootROM MBP41.00C1.B03, 2 processors, Intel Core 2 Duo, 2.5 GHz, 4 GB, SMC 1.27f3
Graphics: NVIDIA GeForce 8600M GT, GeForce 8600M GT, PCIe, 512 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR2 SDRAM, 667 MHz, 0x7F7FBAFFFFFFFFFF, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Memory Module: BANK 1/DIMM1, 2 GB, DDR2 SDRAM, 667 MHz, 0x7F7FBAFFFFFFFFFF, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8C), Broadcom BCM43xx 1.0 (5.10.131.36.16)
Bluetooth: Version 4.1.4f2 12041, 2 service, 18 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: ST500LT012-9WS142, 500.11 GB
Parallel ATA Device: HL-DT-ST DVDRW GSA-S10N
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x1a100000 / 2
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x820f, 0x1a110000 / 4
USB Device: Built-in iSight, apple_vendor_id, 0x8502, 0xfd400000 / 2
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0230, 0x5d200000 / 3
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x5d100000 / 2
Not sure how to interpret it, but I'm glad it's working now. Hopefully it will be fine!

Comp wont boot with ram in any slots besides 1&3

No idea why...have 4 of the exact same ram and i've mixed and matched so it's not the ram..if I put ram in slot 2 or 4 the comp just wont boot.
Anyone know what is causing this? Thanks in advance
Corsair xms 3200 and k8n neo2 plat btw

Quote
Originally posted by Paul Foster
Mine works just fine. Take one step at a time. Go back to the minimum configuration and use memtest86 to try to isolate where the problem is. This thread is a great place to start:
Basic Building tips
ditto - usual problem is BIOS - stick in one stick - boot into windows or whichever way you normally flash your BIOS and get the latest bios

HT1423 I am adding more memory, should I replace the top two slots with the 4g memory modules, then place 2g memory modules on bottom slots. Does it even matter?

I am adding more memory, should I replace the top two slots with the 4g memory modules, then place 2g memory modules on bottom slots. Does it even matter?

I am adding more memory, should I replace the top two slots with the 4g memory modules, then place 2g memory modules on bottom slots. Does it even matter?

I HAVE A CANON DIGITAL REBEL EOS 300D CAMERA. THE CF CARD WAS PUT IN THE CARD SLOT WRONG &DAMANAGED

I HAVE A CANON DIGITAL REBEL EOS 300D CAMERA. THE CF CARD WAS PUT IN THE CARD SLOT INCORRECTLY AND THE CARD SLOT WAS DAMANAGED. CAN THIS BE REPAIRED. AND HOW MUCH.

Hi Ronald,
I'm sorry to hear that the pins in the memory card compartment of your Digital Rebel have been bent.
Because the service life for this camera has expired, Canon no longer offers service for it. I'm sorry for the difficulty this causes.
Did this answer your question? Please click the Accept as Solution button so that others may find the answer as well.

HT1651 I have a mid 2009 Macbook, can I put 4GB in each slot?

I have a mid 2009 Macbook, can I put 4GB in each slot?

The maximum it can use is 6 GB (1x 2GB, 1x 4GB), so 2x 4GB would be redundant.
That said, it may work but without using more than 6.
I would contact Crucial or MacSales (OWC) tech support; they may well be able to advise you better than we can.
(If you're not in the States, choose another country from the flag menu at top right and go to the support page there).

Gapping mis-alignment in bottom slot

Hi Guys,
I cannot get the bottom slot to line up in the correct position when using gapping.
The bottom slot abuts to the right of the Main Slot, extending the width of the page and ruining the layout.
If I turn off gapping the bottom slot works correctly.
I created a minimal theme with NO code of my own and have trawled through the emitted HTML and found:
    12 "<i>table</i>" and 12 "<i>/table</i>"
    16 "<i>tr</i>" and 16 "<i>/tr</i>"
    <b>23</b> "<i>td</i>" and <b>21</b> "<i>/td</i>"
Is there a fix for this or do I turn off gapping and space all the slots via style-sheet padding?
Netpoint version 5.9.
HTML code follows:
<form name="Form1" method="post" action="default.aspx" id="Form1">
<div>
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwULLTE3MzUzNzUzMzVkZDDGrwU27HlOfnRfT/Rk/8htqq5H" />
</div>
<table border="0" cellPadding="0" cellSpacing="0" width=""><TR><TD class=npbody valign=top>banner</td></tr></TABLE><table cellSpacing=0 cellPadding=0 width="" border=0>
<tr><td vAlign=top align=left width="" ><TABLE border="0" cellPadding="0" cellSpacing="0" width="" ><TR><TD class=npbody valign=top>left</td></tr><tr><TD> </TD></tr></TABLE></td><td width="5"><img height=1 src="/assets/images/1.gif" width="5"></td><td vAlign=top align=center><table cellSpacing=0 cellPadding=0 width="100%" border=0>
<tr>
<td><TABLE border="0" cellPadding="0" cellSpacing="0" width="100%">
<tr>
<TD>top</td></tr>
</TABLE></TD>
</TR><tr><td valign=top><table cellSpacing=0 cellPadding=0 width="" border=0>
<tr>
<td vAlign=top >
     <TABLE border="0" cellPadding="0" cellSpacing="0" width="100%"><TR><TD class=npbody valign=top>main</td></tr><tr><TD> </TD></tr></TABLE>
</td></tr><tr>
<td width="5"><img height=1 src="/assets/images/1.gif" width="5"></td><td vAlign=top align=center><table cellSpacing=0 cellPadding=0 width="100%" border=0>
<tr>
<td valign=top><TABLE border="0" cellPadding="0" cellSpacing="0" width="100%">
<tr>
<TD class=npbody>bottom</td></tr>
</TABLE>
</TD>
</TR>
</TABLE>
<td></TR></TABLE></td></tr></table></TD><td width="5"><img height=1 src="/assets/images/1.gif" width="5"></td><td valign=top width="" ><TABLE border="0" cellPadding="0" cellSpacing="0" width="" ><TR><TD class=npbody valign=top>right</td></tr><tr><TD> </TD></tr></TABLE>
</td>
</TR>
</TABLE><table border="0" cellPadding="0" cellSpacing="0" width=""><TR><TD class=npbody valign=top>trailer</td></tr></TABLE>
<BR><BR><table bgcolor=yellow><td><font color=purple><b>NETPOINT DEVELOPMENT COPY THIS IS FOR TESTING ONLY. THIS IS A TESTING AND DEMONSTRATION SITE ONLY</b></font></td></table></form>

I would use CSS to override td width tags and table dimensions instead of gapping for this particular implementation. This will give you more control and it will be sitewide.

Comp wont boot with ram in any slots besides 1&3 no matter what, faulty board?

Ok i've tried pretty much everything, got latest bios, changed timings to everything but the comp just wont boot if I have any ram in slots 2&4. Actually got the comp to boot up with ram in slots 1&2 once, but tried with all 4 slots filled and didn't work, and after that slot 2 didn't work again.
Could it be a faulty board? I know it's not the ram.

Ahh, turns out you were right tiresmoke.
Even though I thought I had 4 sticks that were exactly the same..one wasn't. 3 of them are xms32004.1 0427033 - 0...the one i've always had in my comp is 5.1 0430069 - 1. Put in 2 of the 4.1 and was able to run dual channel np. That explains why one time I was able to run dual channel then switch the ram and couldn't..had no idea there was minor differences..and have no idea why I got 3 of one kind and 1 of another when I orderd the 4 sticks.
Going to try and exchange the 4 sticks for 2 1 gig sticks..how good is neweggs return policy heh? Been like nearly 2 months..

Mac pro 2006 hd 2600 xt should work in bottom slot?

I was using a 3rd party hd 4870 in the bottom and was working fine. Now I was thinking of selling the machine but when I put the older hd 2600 in the slot there is nothing. All of the other slots work fine, I have yet to see if the 4870 will work if I put it back to test. The old one should work though? I did think though that the 4870 would register as x16 but always has shown x8 in the bottom. Would that indicate that there was a problem in the slot, that it was going out?

An excellent question ! Yes, the X2600 should work in slots 1 or 2, but I'm not sure about slot 3
see this entry at Everymac.com on PCI-E bus lanes
http://www.everymac.com/systems/apple/mac_pro/faq/mac-pro-pcie-architecture-lane -configurations.html
as far as I know, graphics cards go in slots 1 and 2, not so sure about 3 and 4. as you can see by the above entry, slot 1 has double width 16 lanes, slot 2 has 8 lanes, and 3 has 4 lanes. there may not necessarily be a problem in the slot, but that the 2600 XT likes to be in slot 1 or 2, and the 4870 could be a little less picky. The only way to tell if it is going out or not is to shut your Mac Pro down, take off the side panel, change graphics cards,including hooking up the power cable as needed, putting the side panel back, rebooting and checking under "About this Mac" then more info, then System report where it should show up as a PCI card in whichever slot you have installed it. Should you have hooked up the power cable and reinstalled the graphics card correctly in the correct slot and it doesn't show up in the system report at all, that could indicate a problem. just FYI, the 2600 XT isn't considered to be that great of a video card any more and may get clogged up with dust . You may be able to bake the video card to get a few more months' use out of it but this is a temporary fix only, and is not endorsed by anyone. if you could find an 8800GT mac version for a reasonable price, that might be a better solution
John Brine

4gb ram, only one slot

I have 2gb ram in my macbook and bought another 2 gb ram card and went to put it in and it looked like i could only fit one card in my mac. So, do i have to buy one card that is 4gb insead of 2 cards of 2gb to equal to 4 gb? 'cause i don't see how i can fit another card, it looks like i can only fit one card

GfulDedFan wrote:
If you have the Aluminum MacBook, the second slot is underneath the visible first slot. In other words, the slots are stacked instead of side by side as in the White/Black MacBooks. Please see [*this video*|http://eshop.macsales.com/installvideos/macbook13_unibody_memm>.
You currently have 2 x 1GB modules installed. In order to upgrade to 4GB, you will need to purchase a 4GB kit (2 x 2GB). You could purchase 1 each 4GB module instead and install only one module but the 2 x 2GB would be more economical and give you better performance from using a matched pair. -GDF
I'm not sure if it's the case that 2x2GB as a matched pair would give better performance than 1x4GB. It's kind of complicated, but I'd think everything that's done when switching between 2 modules in matched pairs can be done with the internal "bank switching" that's done in the large memory module. If anything, I'd think 1x4GB might be faster.
Of course I'm basing my belief on my reading of Intel's description of their memory controller. NVIDIA could very well be doing it as true "matched pair" operation where the access is done in parallel with an effectively double-width data bus. I doubt it though. Most of the benchmarks I've seen seem to indicate that the most important factor for performance is having more total memory. If you could effectively double your data bus width with matched modules, I'd expect that there would be substantially faster performance from 2x2GB compared to 2GB+4GB.
http://eshop.macsales.com/Reviews/Framework.cfm?page=/Benchmarks/6gb_tests.html

Whenever i put ram into the second memory bank my macbook will not start

I've only had one 1GB ram installed while ive had this macbook. Recently when i tried to install a new osx i was told it needed more memory. So i ordered another 1GB ram and installed it into the second memory bank. When i tried to turn on my computer, it sounded like it was ready to start up but then it repeated the process numerous times and all i had was a black screen. I figured the ram i bought just was defective but then i played around with it and took my old one out and put the new one in the first slot and it worked fine. Then i took my old one that worked as well and put it in the second slot while the first was empty and the problem reoccured. What is the problem here and is it fixable?

Let's assume the second slot is dead.
You can try to put the maximum supported size in the first slot.
Chat with the good folks at Other World Computing.
http://eshop.macsales.com/tech_center/
Have the season and year an model number of your MacBook handy before you start chatting.
 > About This Mac > More Info...
Note the season and year
> System Report ... > Model Identifier:

Pavilion dv6-3130tx Blue Screen (BSOD) on adding RAM to second slot

Hi there,
I own a HP Pavilion dv6-3130tx with total of 3gb of RAM, one 1GB chip and one 2 GB chip. Recently I have been getting a lot of system crashes/freezes and occasional Blue Screen of Death (BSOD) with a variety of error messages. On contacting HP care in India they said to check the RAM chips and the slot for any problem. I have identified that the second slot is one creating the problem as the system crashes if use any one of the chips on that slot while both the RAMs work fine on the other slot.
Additionaly the RAM port/slot cannot be replaced as such, and since it is out of warranty getting the motherboard replaced isn't an alternative either.
So does anyone have any idea what might be the best way out of this problem?

Did the 3GB of RAM come with the computer or did you upgrade it at some point?
What version of Windows are you using?
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HT1423 More than 4 gb ram in each slot?

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swanusa --
I think GeNomeZ has it right.
The DDR2 SD RAM in the October 2005 revision PBs runs at the same 333 MHz speed as does the DDR SD RAM in the prior revision PBs.
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-- JDee

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