Having trouble finding the right memory. Hoping to find some RAM in the correct size to max out my board.

Memory Summary      Reported by BIOS
Maximum Capacity      8192 MBytes
Maximum Memory Module Size      2048 MBytes
Memory Slots      4
Looks like I only have 4Gig of ram need more performance out of the machine below. Hoping someone can help me max out the slots. Which appear to be 4 slots with a 2Gig max. My problem is all the numbers listed when I search confuse the heck out of me. and I am not sure which one will work. My mother board is listed below. Can anyone suggest the best quality memory for the most reasonable price for this machine. Need to max it out to work with some server and database components. Thank you.

Property      Value
MyMachine
Summary
Manufacturer      ASUSTeK Computer INC.
Model      P5N-D
Version      1.XX    
Serial Number      123456789000
Bridge
North Bridge      NVIDIA nForce 750i SLI SPP Revision A2
South Bridge      NVIDIA nForce 750i SLI MCP Revision A3
CPU
Name      Intel(R) Core(TM)2 Quad CPU Q8400 @ 2.66GHz
Cpu Socket      Socket 775 LGA
Max CPU Speed      3800 MHz
Memory
Maximum Capacity      8192 MBytes
Maximum Memory Module Size      2048 MBytes
Memory Slots      4
Memory Type      DDR2
System Slots
ISA      0
PCI      6
AGP      0
VL-BUS      0
EISA      0
PCMCIA      0
ExpressCard      0
MCA      0


Current Memory chips only one slot mentioned here below.

Property      Value
MyMachine
Memory Summary      Reported by BIOS
Maximum Capacity      8192 MBytes
Maximum Memory Module Size      2048 MBytes
Memory Slots      4
Error Correction      None
DRAM Frequency      266.7 MHz
Memory Timings      4-4-4-31 (CL-RCD-RP-RAS)
Device Locator      Slot 1
Manufacturer      Micron Technology
Part Number      18HTF12872AY-53EB1
Serial Number      69BB477F
Capacity      1024 MBytes
Memory Type      DDR2 (PC2-4300)
Speed      266 MHz (DDR2 533)
Supported Frequencies      200.0 MHz, 266.7 MHz
Memory Timings      3-3-3-9-12 at 200.0 MHz, at 1.8 volts (CL-RCD-RP-RAS-RC)
Memory Timings      4-4-4-12-16 at 266.7 MHz, at 1.8 volts (CL-RCD-RP-RAS-RC)
Data Width      72 bits
Manufacturing Date      2006, Week 22
EPP SPD Support      No
XMP SPD Support      No
RUA Volunteer2?Tableau Trainer & Consultant Sales Exec.Asked:
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Natty GregIn Theory (IT)Commented:
Front side bus supported is 1333/1066 MHz that means you can buy 4 two gigabyte memory module with speeds of 1066 or 1333mhz

it this is your motherboard
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RUA Volunteer2?Tableau Trainer & Consultant Sales Exec.Author Commented:
So it has to be
Memory Type      DDR2 (PC2-4300)
Speed      266 MHz (DDR2 533)

Can you give me an example of what that would look like to google the best one to purchase assuming that
Speeds of 1333mhz is faster than 1066mhz...?
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RUA Volunteer2?Tableau Trainer & Consultant Sales Exec.Author Commented:
The confusion for most I think is that we as humans who do not know any better see one number that is slightly different like I saw one that had similar numbers except it said DDR2 (PC2-4200) not DDR2 (PC2-4300)....so to me that was not a match...? I do not know the critical .... if any numbers need to match up...? Hopefully that made sense.
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Natty GregIn Theory (IT)Commented:
DDR2 max out at 800 mhz so that would mean you buy PC2-6400 and that is the MAx Memory you can buy for this board.

The board however have a FSB of 1333/1066 but will only run at 800mhz because that is the fastest RAM the board allows
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Natty GregIn Theory (IT)Commented:
your board allows the use of PC2 -4200 to PC2 -6400 they do not have to match but lets say you bought PC2-5300 and you bought PC2-6400 the board will run at the slower speed which is PC2-5300 which is 667Mhz
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nobusCommented:
you said "need more performance out of the machine below"  if you need a faster system - i suggest to buy an SSD; your system will run fast then - even with 4 GB Ram
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RUA Volunteer2?Tableau Trainer & Consultant Sales Exec.Author Commented:
Okay so what would be a full on example of the ram to get do I search for Everytime I search for  2 GB DDR2 (PC2-4300). I get back 2 units of 1 gb even when I put in 2 of 2 gb....I am just getting hung up on how to word it so do you know the naming convention to search sir. Sorry it is almost like the web tries to sneak one past you so you order something ancient that cannot be returned. I do not want to get stuck with the same 4 gigs I have now. Is my point sorry.....and thanks.
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RUA Volunteer2?Tableau Trainer & Consultant Sales Exec.Author Commented:
Nobus what is SSD.  Is that a Solid State Drive or something I am not familiar with in Memory terms...?

If so what do you recommend there sir.
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nobusCommented:
You must realise that the disk is the SLOWEST part of your system

info here :  https://en.wikipedia.org/wiki/Solid-state_drive
250 GB drive at 180 $ :  https://www.amazon.com/Samsung-2-5-Inch-Internal-MZ-75E500B-AM/dp/B00OBRE5UE
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andyalderSaggar maker's framemakerCommented:
>Everytime I search for  2 GB DDR2 (PC2-4300). I get back 2 units of 1 gb

That's because they are normally sold in pairs. Search for 4GB instead and you'll get 2 units of 2GB each which is what you want assuming your OS isn't restricted to 4GB.
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Natty GregIn Theory (IT)Commented:
SSD will improve the boot time of the OS and maxing the Memory will see increase speed - maxing out the memory slots will improve multitasking -- but to harness all that new power make sure you're running the x64 bit version of the OS.
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RUA Volunteer2?Tableau Trainer & Consultant Sales Exec.Author Commented:
Cool I think I will do that. Look for that SSD and the RAM 4gb x 2gb and get a 2 sets of that. With any luck I should be at 8 gigs of RAM and at least a high performing HD. Now I got to figure out how to put it in the unit. I guess it replaces the spot where the HD currently is.....Sorry. I have two simultaneous questions about Memory. Got them confused. This question was for my Tower Office PC. I did not even know you could buy SSD for towers. I assume there are bigger ones than 250 G. I would think that you are pointing me to a Laptop SSD not Tower Office PC?
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nobusCommented:
SSD's are the same for laptops and desktops - you mount the desktop ones in a caddy
right now, you can buy 500 Gb and 1000 Gb SSD's
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