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DDR2 1066 or DDR2 667???

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February 8, 2009 7:12:27 AM

Hi everyone,

I thought I knew about RAM memory but after checking out the forum I figured out that I actually know very little. I was thinking about adding more RAM but after reading some of the forums, it seems like I would be wasting my time/money buying more RAM since my CPU won't really benefit from it. I was considering buying the following: http://www.newegg.com/Product/Product.aspx?Item=N82E168... but after researching to see if my motherboard would handle it, I came across articles about how more RAM does not really increase performance. So my question is, Should I bother buying the 2 X 1GB 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500)? And if so, I currently have 1 GB DDR2-667 DDR2 SDRAM as you can see below, would there be a conflict in having the 2 different type of RAM speed?

Please e-mail me the answers here: bucaro15@yahoo.com

Thanks in advance for all the help!!!


Here are my specs:


Operating System Microsoft Windows XP Home Edition

Motherboard
CPU Type DualCore Intel Core 2 Duo E6400, 2133 MHz (8 x 267)
Motherboard Name Biostar 945P-A7A (3 PCI, 2 PCI-E x1, 1 PCI-E x16, 4 DDR2 DIMM, Audio, LAN)
Motherboard Chipset Intel Lakeport i945P
DIMM1: Centon Electronics JIYS38UXA 1GB 1 GB DDR2-667 DDR2 SDRAM (5-5-5-15 @ 333 MHz) (4-4-4-12 @ 266 MHz) (3-3-3-9 @ 200 MHz)
BIOS Type Award (08/23/06)
Communication Port Communications Port (COM1)
Communication Port Printer Port (LPT1)

Display
Video Adapter Radeon X1300/X1550 Series Secondary (512 MB)
Video Adapter Radeon X1300/X1550 Series (512 MB)
3D Accelerator ATI Radeon X1300 LE (RV515)

More about : ddr2 1066 ddr2 667

February 8, 2009 3:21:51 PM

More ram will improve performance significantly, especially when upgrading from 1gb to 3. Going with faster ram is where differences are really unnoticable. And even if you buy that 1066 ram it will run at 667 anyway, so its a bit pointless really. Go for some nice 1.8v rated ddr2 800 sticks
February 8, 2009 5:35:55 PM

MaDMagik said:
More ram will improve performance significantly, especially when upgrading from 1gb to 3. Going with faster ram is where differences are really unnoticable. And even if you buy that 1066 ram it will run at 667 anyway, so its a bit pointless really. Go for some nice 1.8v rated ddr2 800 sticks



Thanks MaDMagik! Well I've read that your PC will run at the lowest memory it has in it (which makes perfect sense) so if I bought the new RAM I was thinking about maybe trying to sell the 667 so it runs at 1066. So should I just get like 4gb of 800 instead of 1066 (assuming I am taking out the 667)? Another point I forgot to make was that I used everest to get my specs and it says that my DRAM:FSB ratio is 10:8 and from all I've read it seems like it should be 1:1 for optimal performance. How do I tweak this ratio?

Thanks again for the help!
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February 8, 2009 6:43:39 PM

I had a brief look on your mobo and on manufacturers site it says that fastest ram it supports is 667(because od the old i945 chipset i guess?), if thats the case than even if you get rid of the old stick the new ones will run at max 667.

1:1 ratio is achieved when you run your memory at the same speed as FSB(in your case 266mhz, so DDR2 533Mhz will be your memory on 1:1 ratio). At the moment your memory runs on 10:8 ratio so 1.25 x 266 = 333(ddr667) Dont know your mobos bios, in my I get several memory speed options to choose from(like ddr2 533, 667, 800)- and these my memory speeds on different ratios. I run my ddr2 800 ram at ddr2 660(i have fsb 330), because im of an opinion that its better to have 1:1 ratio than higher memory speed.

Did you think about overclocking at all?
February 8, 2009 6:51:43 PM

Ehm, i guess it was a stupid question when your mobos max fsb is 266
February 8, 2009 8:54:37 PM

MaDMagik said:
Ehm, i guess it was a stupid question when your mobos max fsb is 266



Well I'm not really familiar with overclocking (never done it cause I always hear about people's PC overheating and breaking....and I wouldn't have the money to build another PC from scratch). So your recommendation would be to just buy 3 more gigs of DDR2 667 instead? And go in Bios and change the speed to run at DDR2 533? But didn't you say my max was 667 according to the site?
February 9, 2009 8:55:36 PM

Let me put it like this: if it was my system I would only buy 2 GB of ram. Reason? If youre using a 32-bit operating system(and you are) total of a memory(ram, gfx card memory, etc) the system can adress is 4GB. So if you have 4GB of ram installed and one 512mb gfx card, you will only have 3.5 gb of ram available. If you have two of those cards, than you will only have 3GB of ram for use, even though you have 4GB installed.

As for your mobos speeds: max FSB is 266, Max for memory is 333(ddr 667) - achieved via 10:8 ratio

As for what to do, it also depends on what do you plan to do in the future in terms of upgrading. You can buy faster ram and run it slower, hoping to use it in future on a new system. Or you can buy 667 or even 533 ram but you wont be able to use it in future. Whichever option chosen, i would run the memory on DDR 533 to have 1:1 ratio.

When building my system i decided that my next PC will come in next 2 or so years, so it definately will be some ddr3 based system, thats why i bought slower ram now because i know i will not use it in my future build.

If your not familiar with overclocking than leave it alone until you do, because you need some basic understanding of how those components work if you dont want to damage them.

Hope that helps.
February 10, 2009 3:55:02 AM

MaDMagik said:
Let me put it like this: if it was my system I would only buy 2 GB of ram. Reason? If youre using a 32-bit operating system(and you are) total of a memory(ram, gfx card memory, etc) the system can adress is 4GB. So if you have 4GB of ram installed and one 512mb gfx card, you will only have 3.5 gb of ram available. If you have two of those cards, than you will only have 3GB of ram for use, even though you have 4GB installed.

As for your mobos speeds: max FSB is 266, Max for memory is 333(ddr 667) - achieved via 10:8 ratio

As for what to do, it also depends on what do you plan to do in the future in terms of upgrading. You can buy faster ram and run it slower, hoping to use it in future on a new system. Or you can buy 667 or even 533 ram but you wont be able to use it in future. Whichever option chosen, i would run the memory on DDR 533 to have 1:1 ratio.

When building my system i decided that my next PC will come in next 2 or so years, so it definately will be some ddr3 based system, thats why i bought slower ram now because i know i will not use it in my future build.

If your not familiar with overclocking than leave it alone until you do, because you need some basic understanding of how those components work if you dont want to damage them.

Hope that helps.




Yeah it does! Thanks a lot for all your help! I've decided I might not be upgrading for a while so I might just buy some cheap 667 RAM. I changed the speed of the RAM on Bios and it is now 1:1 ratio according to everest. Again thanks for the help!
February 10, 2009 11:21:13 AM

You`re welcome
!