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What RAM will be best for my CPU?

Forum Motherboards & Memory : Chipsets & Bios - What RAM will be best for my CPU?

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Hi all,

I am a newbee in hardware knowledge. I am planning to buy a new notebook and is considering the available options. I am concerned about optimum match of CPU and RAM within my budget. Reading a lot of articles I have come to know that usually the FSB speed and memory speed should have a 1:1 ratio. Some articles say that modern day asynchronous systems allow memory:FSB ratio of 5:4 too. However I am bit confused here as to which FSB speed is used for this ratio (actual or effective).

1) Being straight, I want to ask what speed of memory will be optimum with an Intel Core2Duo P8600 with 1066MHz FSB effective speed (now I know that this is actually 266MHz frequency)?

2) In a RAM:FSB ratio, which FSB speed is used (FSB freuency/actual or the effective)?

3) Taking a DDR2 of 800 MHz with above CPU will make what ratio of RAM:FSB?

4) Would anybody like to suggest any other "better" Intel CPU in same category/price range?

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Q9550 is about the same price and has way better stats. For sure, go with the Q9550.


PS ~ you can get the 9550 for at least 20 dollars off on eBay.


Message edited by deluxegamer233 on 08-11-2009 at 07:47:41 PM
Reply to deluxegamer233

hi preethi,
in my opinion,leave that actual or effective things,in terms of performance apple computers are the best.How they are achieving this much performance?These guys are very much carefull in the hardware designing also.They are having perfect match between there machine parts.They are using 1066 Mhz processor along with 1066 Mhz main memory.and it give us amazing results also.

Reply to Anonymous
- 0 +

Welcome to the forum

1. Many people think 1to1 ratio matters, it dosn't. IF the ram and processor were the only two parts communicating AND you matched the latency and processing methods THEN 1to1 would be ideal because it would eliminate waste on either side. But n acutallity it's not nearly that simple.

2. Actual frequency is used. Pentium and Core two chips are "Quad Pumped" meaning the effective data rate is 4 times the actual frequency. DDR is "Double Data Rate" hence it's effective speed being twice what the actual is.

3. see #2 and do the math

4. Personally when i buy a cpu I will divide the price by the speed of the chip. then see what chip is the cheapest per hertz.

------------------------------ E8400 : GA-EP35-DS3L : mushkin 4GB DDR2 800 : HD 2600PRO : 450W ATX12V : Windows 7
Reply to 505090

Make sure you only buy with that method [dividing price by speed] realizing that different types have different "3.0GHz".

I wonder how 3.0GHz compares in i7s, i5s, and Es and Qs.

Reply to deluxegamer233
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