Installed additional RAM but computer performance now worse

Can anybody please help? I have a T61 that came with 2Gb RAM (1GB + 1GB) and I recently purchased another 2GB chip. The problem is that after installation I had a total RAM of 3GB (1GB + 2GB), the Windows Experience Index score actually decreased! It went from 3.5 to 3.1!!
Also, under the category Memory (RAM), the score remained unchanged at 4.8!! Should this have at least increased? Also, I am not noticing any improvements in performance.
Is there something that I haven't done or is there anything I should do after the installation? And yes, I did refresh/update from index score.
Please don't tell me I need to buy a new notebook!!!
Thanks

Part of the problem is that with two differents sized DIMMs you lose the Dual Channel mode feature of the RAM, so the effective throughput of the RAM would be lowered compared to the two 1GB modules that operated in dual-channel.
If possible I would suggest 2 x 2G modules for a total of 4GB or if you can afford it 2 x 4G modules for a total of 8GB this will keep the dual channel mode active and the RAM performance optimal.
http://en.wikipedia.org/wiki/Dual-channel_architecture
T400 6475-8Q5 | 8GB RAM | WXGA+ | Seagate 500GB 7200 | Win 7 Pro 64-bit............T61 7658-CTR | 8GB RAM | WD Black 320GB

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Installing additional ram memory

I am trying to install memory in my Mac Pro, but some of the risers come upon the hardware configuration panel as empty. I have moved around the memory modules and they all work, but just not when they are all installed at once. I have two sets of 2 gb modules and four 1 gb modules. Two of the 2 gig modules are are Centon and two are another brand. All of the 1 gig modules are exactly the same. Currently, I have 4x1GB modules installed and 2x2gb modules installed. My computer is reading the 2 GB modules, but only reading two of the 1GB modules. Here's my Mac configuration:
Model Identifier:    MacPro2,1
Processor Name:    Dual-Core Intel Xeon
Processor Speed:    2.66 GHz
Number Of Processors:    2
Total Number Of Cores:    4
Memory:    6 GB
Bus Speed:    1.33 GHz
When I putt all four of the 2GB modules in the first two slots and the four 1GB modules in the last two, the computer read the 1 GB modules but one of the 2GB modules????? When I removed all of the 1 GB moduels, the computer then read two of the 2GB modules. I am totally confused. I have tested all of the modules and they all work in one configuration or another, and I've checked all of the slots and they work too. Any suggestions on what I should try next?
thanks

Hi, this may or may not resolve the issue:
MacBook Pro: How to remove or install memory:
Additional notes     For best performance, fill both memory slots, installing an equal memory module in each slot.
     In Mac computers there is a hardware component known as the "RAM Equalizer". The function of this is impeded when the memory slots are filled with unequal memory quantities.

Installed Additional RAM - anything else?

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Usually, you'll be alright, but if things start acting odd, like your machine stops booting, etc. that's when you might start thinking there is something wrong with your RAM.
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Kernel Panic only after I install 16GiB RAM but it passed memtest and AHT

Kernel Panics occur after I installed the 16GiB RAM(Corsair Vengeance Laptop Memory Kit 16 GB (2x8 GB) DDR3 1600MHz CL10 PC3 12800 (CMSX16GX3M2A1600C10) in my MacBook Pro 17" 2011 early. It might appear in login window, or after using Safari for 2 or 3 hours. If I did't use the MBP overnight and just let it run, there would be strong possibility that kernel panic didn't occur. But on the next day when I went up and start using the computer, the kernel panic occur in half an hour.
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However, when I install one of the 16GiB a.k.a 8GiB, kernel panic never occur. I even tried one 8GiB with another my old 4GiB ram, and kernel panic didn't occur either.
I've tried to fix the problems for 2 weeks, and I did everything I can. So, can anyone tell me which part might be bad, Mac or RAM? Should I goto Genius Bar or ask Corsair for RMA?
Here's my latest panic log:
Fri Jul 20 10:55:04 2012
panic(cpu 6 caller 0xffffff80002c473a): Kernel trap at 0xffffff8000290560, type 13=general protection, registers:
CR0: 0x0000000080010033, CR2: 0x00000001295eb000, CR3: 0x000000012af4c018, CR4: 0x00000000000606e0
RAX: 0x0000000000000001, RBX: 0x000000000043f000, RCX: 0xffffff8025022780, RDX: 0x000000000037a1de
RSP: 0xffffff81d0c93da0, RBP: 0xffffff81d0c93dc0, RSI: 0x0000000020c85580, RDI: 0xffffff80051880e8
R8: 0xffffff81d0c93f08, R9: 0xffffff81d0c93ef8, R10: 0x0000000129a02000, R11: 0x0000000000000000
R12: 0xffffff80051880e8, R13: 0x0000000000000000, R14: 0xffffff8030cdddc0, R15: 0x0400000000000000
RFL: 0x0000000000010206, RIP: 0xffffff8000290560, CS: 0x0000000000000008, SS: 0x0000000000000000
CR2: 0x00000001295eb000, Error code: 0x0000000000000000, Faulting CPU: 0x6
Backtrace (CPU 6), Frame : Return Address
0xffffff81d0c93a50 : 0xffffff8000220792
0xffffff81d0c93ad0 : 0xffffff80002c473a
0xffffff81d0c93c80 : 0xffffff80002da0cd
0xffffff81d0c93ca0 : 0xffffff8000290560
0xffffff81d0c93dc0 : 0xffffff800026c9c3
0xffffff81d0c93f40 : 0xffffff80002c3fbb
0xffffff81d0c93fb0 : 0xffffff80002d9ff1
BSD process name corresponding to current thread: WebProcess
Mac OS version:
11E53
Kernel version:
Darwin Kernel Version 11.4.0: Mon Apr 9 19:32:15 PDT 2012; root:xnu-1699.26.8~1/RELEASE_X86_64
Kernel UUID: A8ED611D-FB0F-3729-8392-E7A32C5E7D74
System model name: MacBookPro8,3 (Mac-942459F5819B171B)
System uptime in nanoseconds: 33803619400129
last loaded kext at 33523436785050: com.apple.filesystems.smbfs          1.7.2 (addr 0xffffff7f807cd000, size 241664)
last unloaded kext at 331013518734: com.apple.driver.AppleUSBUHCI          4.4.5 (addr 0xffffff7f80ac3000, size 65536)
loaded kexts:
com.parallels.kext.prl_vnic          7.0 15095.768120
com.parallels.kext.prl_netbridge          7.0 15095.768120
com.parallels.kext.prl_hid_hook          7.0 15095.768120
com.parallels.kext.prl_hypervisor          7.0 15095.768120
com.parallels.kext.prl_usb_connect          7.0 15095.768120
com.Cycling74.driver.Soundflower          1.5.2
com.jmicron.driver.JMB38X          1.5.0
com.apple.filesystems.smbfs          1.7.2
com.apple.driver.AppleIntelProfile          85.2
com.apple.driver.AppleHWSensor          1.9.5d0
com.apple.filesystems.autofs          3.0
com.apple.driver.AudioAUUC          1.59
com.apple.driver.AGPM          100.12.42
com.apple.driver.AppleMikeyHIDDriver          122
com.apple.driver.AppleHDA          2.2.0f3
com.apple.driver.AppleMikeyDriver          2.2.0f3
com.apple.driver.AppleUpstreamUserClient          3.5.9
com.apple.driver.AppleMCCSControl          1.0.26
com.apple.kext.ATIFramebuffer          7.1.8
com.apple.driver.SMCMotionSensor          3.0.2d6
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com.apple.driver.ACPI_SMC_PlatformPlugin          5.0.0d0
com.apple.driver.AppleMuxControl          3.0.16
com.apple.driver.AppleLPC          1.5.8
com.apple.iokit.IOUserEthernet          1.0.0d1
com.apple.ATIRadeonX3000          7.1.8
com.apple.driver.AppleIntelHD3000Graphics          7.1.8
com.apple.iokit.IOBluetoothSerialManager          4.0.5f11
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.AudioIPCDriver          1.2.2
com.apple.driver.AppleSMCPDRC          5.0.0d0
com.apple.driver.BroadcomUSBBluetoothHCIController          4.0.5f11
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com.apple.driver.AppleUSBTCKeyboard          225.2
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com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
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com.apple.iokit.IOAHCIBlockStorage          2.0.3
com.apple.driver.AppleFWOHCI          4.8.9
com.apple.driver.AirPort.Brcm4331          530.4.20
com.apple.iokit.AppleBCM5701Ethernet          3.1.2b2
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com.apple.driver.AppleHPET          1.6
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com.apple.nke.applicationfirewall          3.2.30
com.apple.security.quarantine          1.3
com.apple.driver.AppleIntelCPUPowerManagement          193.0.0
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Junlu wrote:
Thank you for your reply.
My 8GiB RAM is also two 4GiB DDR3 1600MHz (SAMSUNG) and it was running very well.
I also checked the intel documents (http://ark.intel.com/products/50067/Intel-Core-i7-2720QM-Processor-(6M-Cache-up- to-3_30-GHz), and it says:
Memory Types
DDR3-1066/1333/1600
If you have read my original reply to you post, I did mention that someimes it will work and sometimes it won't. Your Samsung might be rated at 1600MHz but the CL could be higher than your Corsair which is why it worked.
The memory Type you read in the link you provided is motherboard/logicboard depended. Your Logic board is rated at 1333MHz. So going 1600MHz will not benefit you since you're locked at 1333MHz.
good luck

Kernel panic after installing additional ram

Hi there.
(I think this should go here, not in laptop issues because it seems to be more hardware-related)
I have a laptop Acer Aspire 2920Z with 2x512 Mb stock ram and I recently bought an memory upgrade 2x2gb. Any of them works when inserted separately, but when I install both, I see kernel panic upon starting X on my i686 Arch installation (and /proc/meminfo shows that I have only 3Gb).
The same behaviour occurs when I try to boot from latest Arch install iso or x86_64 archbang livecd.
My BIOS is updated to latest version and it shows that I have 4Gb of RAM installed.
Right now I installed x86_64 linux kernel but I still have kernel_panic on booting my machine.
Is there any chance that I can use 4gb ram on my laptop?
Also, what are the ways to save those error messages that kernel panic provides? (aside from just taking a picture of the screen with my camera)

cra wrote:I installed kernel by changing architecture param in pacman.conf, running pacman -Syy and pacman -S linux, as described in the corresponding page on the wiki, but without reinstalling every single package I have
Do that step.
EDIT:
cra wrote:Any of them works when inserted separately, but when I install both, I see kernel panic upon starting X on my i686 Arch installation (and /proc/meminfo shows that I have only 3Gb).
The same behaviour occurs when I try to boot from latest Arch install iso or x86_64 archbang livecd.
Wait, you mean just booting the livecd gets you a kernel panic? Insert both of them at the same time, and the test them with memtest86+
Chances are your motherboard pins could have a problem. A problem that is noticiable when you insert both sticks.
Test them with memtest86+.
Last edited by chris_l (2012-12-10 16:22:24)

Anyone know if there is a video for installing additional ram in an early 80's intel Imac?

I bought some ram for my early 80s Imac. Looking for an install video to help me to put it in.

I did mean 2008. Thanks for the link. Got a crucial 2 channel kit thinking I would add them to the original 1 gig in the computer but the videos show people taking out the original, making the 3 gig I wanted (so I can install Yosemite) only 2 gig which I don't know if will work because some of it will be used up. I want to try to install but am afraid if I do and its not enough, they won't take it back. Oh, in case anyone wondering .... I have no experience at doing stuff to computers at all ... none. Its frustrating. I can build houses, cabinets, anything about and this Imac scares me to death, lol. And I bought Crucial memory because guy at Apple store said very good and cheaper. Thank you

Trying to install some software, but computer says that i need a 10.4.4

I have a 2005 G5 and i am trying to install final cut studio software, but it says that I have 10.3.9 and i need at least 10.4.4 or higher to install, do I have to buy tiger or is there a way around this?
Mac OS X (10.3.9)
Mac OS X (10.3.9)

Welcome To Discussions swaggdog!
As Kappy posted, Mac OS X Versions 10.1, 10.2, 10.3, and 10.4, are complete system upgrades that must be purchased.
Once an OS is installed, the point upgrades, such as 10.1.x to 10.1.5 (Final) 10.2.x to 10.2.8 (Final), 10.3.x to 10.3.9 (Final), and 10.4.x to 10.4.8 (Pending), can be downloaded for free.
Tiger is available for purchase at The Apple Store (U.S.).
If you know what to look for, a Full Retail Version, of the Tiger Install DVD, can also be purchased rather inexpensively, at some online Apple retailers, Amazon, eBay, AppleRescue, FastMac, etc.
Be sure not to purchase grey, upgrade or machine specific CDs or DVDs.
The discs should look like the images in the above links.
Additional info in these links.
Using OS X Install CDs/DVDs On Multiple Macs
What's A Computer Specific Mac OS X Release
Software Update, Upgrade: What's The Difference?
Once Tiger 10.4.x is installed, you can use the PPC 10.4.8 Combo Update, to upgrade to the current version.
Make sure your Mac meets the Tiger System Requirements.
Additionally, "Tiger ships on a DVD, but if your Mac doesn’t have a built-in DVD-ROM player, you’ll need CD media. When you buy Mac OS X Tiger, you qualify to purchase Tiger CDs for only $9.95."
Download the Media Exchange Program Order From Here.
Orders must be mailed by March 19, 2007.
AppleRescue, also sells a Tiger installation set on CD
Shop Carefully, Examine All Documentation, And Good Luck!
ali b

Installing additional RAM

hi guys, just bought my first mac this week. I know very little about computers, especially mac, but im trying to learn. i intend to use this computer mainly for sibelius and other music software.
anywho, this question has likely been asked already on this forum, but i ordered the MBP with the 1 gig of ram, and i have bought an additional gig. can anyone walk me through actually inserting this thing into my computer?
thanks
dan
MacBook Pro

Um, did you buy it from apple as 1 stick or 2? If
you bought it as two, then you really need to replace
both sticks else the most you can get is 1.5 gigs
(and everyone will tell you its bad to have unmatched
sticks, since it kills dual channel ram).
How much of a performance hit is it really? I heard someone saying that it kills video performance, but I don't know. This months MacAddict ran some RAM tests using Photoshop (via Rosetta) on an intel MacMini. These are the results, from best performance to worst:
2Gig (2x1Gig)
1.5Gig (1x1Gig, 1x512MB)
1.25 (1x1Gig, 1x256)
1Gig (1x1Gig)
1Gig (2x512)
(the above 2 were pretty much dead even)
768 (1x512, 1x256)
512 (2x256)
512 (1x512)
This somewhat unscientific test tells me that with small amounts of ram (512 total) 2 sticks are better than 1. However, with 1Gig, "mismatched" actually performs equally to 2 sticks. Also a single 1Gig is outperformed by 1.256Gig (mismatched).
Basically the performance diff is very slight. I got mine w/ 1x512, and I have no qualms at all in running 1.5Gig mismatched (I just bought a 1Gig stick).
The article even has a little box titled "THE MATCHED-PAIR MYTH" and concludes that mismatching a pair doesn't really matter.
"in our testing, matched-pair RAM didn't provide a quantifiable improvement over mismatched RAM."
Brain21

Help: I upped the RAM, but Computer is still sluggish

Hello,
I increased the memory of my Powerbook G4 (12 inch, 1 GHz). The original RAM was 256MB and I added another slot of 1G -- brings the current total to 1.256 G.
The computer is still sluggish, though. Multi-tasking is slow. It "thinks" alot and "spins" a lot. Tick, tock, tick, tock.
I've been watching the memory info on the Activity Monitor for the last few weeks/months. I've noticed that after I close down some applications, it doesn't seem to free up the memory. For example, right now it shows:
Wired: 120.19 MB
Active: 342.08 MB
Inactive: 791.89 MB
TOTAL USED: 1.23 GB
TOTAL FREE: 24.89 MB
VM size: 4.96 GB
Page ins/outs: 39153/1372
Why does the computer not free up all that Inactive memory? Rebooting the computer only fixes the problem for a moment.
Is there a configuration setting I've missed somewhere?
Please help! Thank you!!!
Powerbook G4 Mac OS X (10.4.7)

WorldTraveller,
As a computer tech I'll try and explain the basics of memory usage in OS X. It works differently to say Windows if you come from PCs.
Wired: Used for vital system files of Mac OS X, that has to be in RAM all the time.
Active: It is memory that is actively in use within a certain time period.
Inactive: Is either: a) memory that is being used by applications you have open but it hasn't been used in a while or b) memory that has been used by a previously opened application. When more memory is required by a program this is the area that typically gets shuffled around first.
Free: Unused memory that can be used by new applications. The system will always keep some free memory around so it's available promptly if a program requests it.
You can think of inactive as a cache. If you have say Safari open then you close it & restart it, then it will open up faster the second time because it'll still be held in inactive memory. Or a holding area for apps running in the background not being used. This why inactive has the highest number usually. Overall I wouldn't worry about the numbers much coming from the PC field for 18 years, OS X memory management is far more effective then Windows.
As for the hard drive: I noticed my 1.33 Ghz model the fan did run and come on far more then my original 867 Mhz model. One of the reasons I really missed my Rev A running Jaguar the fan rarely came on. In the end I put it down to more heat being generated from the faster chip and Apple did change the level at which the fan kicks in after Jaguar. Mainly because I think most complained about the heat. Personally I'd have taken slightly more warmth for silence. As long as the fan doesn't stay on then it's normal from my experience. I must say my new mini is as quite as my original PB so I can't complain. Until the super drive kicks into high gear then it sounds like a fighter jet LOL.
Anyway I hope this has helped explain things a little better.
Rick
1.66GHz Intel Mini Duo, 1GB RAM, 100GB HD Mac OS X (10.4.7)

Installed additional RAM but computer performanc​e now worse

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