Hello, I would like to ask one information about Xeon L5430 (50W TDP socket 775 Xeon ). This information is very hard to find over internet, as this processor is not very used in test, particulary after overclocking (most tests to be found are in server motherboards at stock speeds)
I would like to ask, what's his actual power consumption in idle/load, when you compare it to E5430. (same clock speed, ratios, FSB) If someone measured it, how much it is less.
At idle, I expect almost no differance, so those 30W differance will be only during full load, during Intel LinkPack test?
The second question is, when I want only mild overclock, will it draw still less power AFTER overclocking? Lets say when I overclock it to 3 Ghz, which is E5450, is better to take L5430 and overclock it, or E5450 at stock. Motherboard will be very good, Asus P5Q deluxe, capable of reaching 450-500 FSB. I know, that to overclock L5430 to 3 Ghz, I will have to raise FSB, so it will draw more watts, than stock 333 Mhz FSB. So my question is basicaly, when I don't want to overclock it to 3.8 - 4.0 Ghz (for that is better E5450 I know, because it has high multiplier), is better to take L5430, than E5450? How are savings made, only by lowering Vcore, or actualy by using some special technology? (in other words, L5430 overclocked to 3 Ghz, using 1.20v VCores, will draw same amount of power as E5450@3ghz using 1.20v Vcore? Or less at same clock and voltage?)
I found only this article, when they are directly compared, but unfortunately, they used them on different motherboards and number of DIMMS.
The recent advent of Intel’s “Nehalem” Xeons had a bit of an apocalyptic feeling to it, when one considered the implications for AMD. Despite strong showings from the past few...
techreport.com
What interested me, is idle power consumption differance, just to note, that those are Dual-CPU platforms.
Anyway, can it have such huge differance from E5450 even in idle? Maybe C-state for E5450 doesn't work? As both have same low multiplier using Intel SpeedStep technology (both downclock to 6x333 = 2Ghz), only higher multiplier is different (8x for L5430, 9x for E5450). How comes, L5430 has so much better power consumption in idle, it's basically 120 Watts!!!
I saw CPU-Z images over internet, and seems, that in Low-power state, both L5430 and E5450 have 6x333 = 2Ghz, and same voltage.
