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Which Power saving/performance Intel CPU?

post #1 of 5
Thread Starter 
I'm going to buy the new G45 motherboard and would also like to change my E6600 with a more power saving one.
Which one of the new Intel CPU is recommended?
Have heard someone mention the E7200 as the most power saving one. It should run as low as 20 W with load on and also perform well.
Is that my best choice when looking at powersaving and performance to my G45 motherboard?
post #2 of 5
I have a little unconventional view on power saving and CPU choice. Recent Intel processors use EIST (Enhanced Intel Speed Step). This drops the CPU multiplier to 6 when the processor is basically idle. Therefore, I prefer a CPU with a slower FSB and higher multiplier because the clock speed is lower when speed step kicks in. Dropping from 8 to 6 is not much of a change. So, from that perspective, I think the E7300, with a 10x multiplier is a good choice. The main drawback is that these processors have small cache memory, so that can definitely affect peak performance.
[Edit] You could also go with an E4600 (2.4G 12x mult FSB-800 2MB cache) if you're not set on a 45nm chip. E2220 is also 2.4G FSB-800, but I think the 1MB cache is a little too thin.

- Mike
post #3 of 5
Quote:
Originally Posted by Bjur View Post

I'm going to buy the new G45 motherboard and would also like to change my E6600 with a more power saving one.

A Wolfdale (45nm CPU, such as the E8400) will consume a little less power than yours.

Though you can greatly lower your own CPU's power consumption by undervolting and/or underclocking it.

Power consumption rises linearly with clock speed, but is proportional to the square of the voltage.
post #4 of 5
Thread Starter 
Will the E8400 be the best choice for my in the new Intel series, when power saving and performance are the main things or will the E7200 be a better choice?
post #5 of 5
I would go with the new E5200: 45nm, 12.5x200Mhz
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