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Power Supply, CPU Comparison Table

Does Intel's Dual-Core Atom Improve Efficiency?
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A Suitable Power Supply is the Key to Efficiency

Once again, we used our compact, low-power 220 W Fortron FSP220 power supply. It is very important to match the power supply output to the loads you are expecting. Most power supplies are only efficient at common load states such as the ones defined by 80plus: depending on the efficiency you get at 20%, 50% and 100% load, you get a standard, bronze, silver or gold certificate. However, the testing doesn’t take into account very low loads, such as occur in the case of the test systems in this review. Consider that 30 to 60 W is 3-6% load in the case of a 1,000 W PSU, and efficiency is typically horrible in such a scenario, to say the least. However, a 30-60 W load is in the area of 13% to 27% of a 220 W supply, which takes us back into more efficient operating modes.

Keep in mind that the correct power supply is most important for low power or for high efficiency systems. If you don’t pay attention to this, it doesn’t even make sense to worry about the other system components.

CPU Comparison Table

Manufacturer
Intel
Intel
Intel
Name
Atom 230
Atom 330
Core 2 Duo
Clock Speed
1596
1596
2529
Code Name
Diamondville
Diamondville
Wolfdale
Based On
x86-64
x86-64
x86-64
Cores
1
2
2
L1 Cache
28
28
28
L2 Cache
508
508
508
Interface
FSB800
FSB800
FSB800
Hyper Threading
Yes
Yes
No
Instruction  Sets
MMX, SSE, SSE2, SSE3, SSSE3MMX, SSE, SSE2, SSE3, SSSE3MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, TXT
Buffer Overflow Protection
XD bit
XD bit
XD bit
On- Die Encryption
No
No
No
Die Size
22
2 x 26 mm²77
Transistors
43
2 x 47 million
270
Package
18
18
Flip-Chip Land Grid Array (FC-LGA6), LGA 775
Processed Technology
45 nm
45 nm
45 nm
TDP
4 W
8 W
61
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