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The laptop is going to use a lot less power, at both idle and load. I can tell you that for sure.
I'd estimate the lowest you're going to get a Ryzen APU based system to idle at is in the 25-35W range, with careful component selection and a minimalist approach. Most desktop Ryzen systems idle in the 50-60W range as a minimum. I measured one of my ryzen rigs at about 70W using an ADP APU. It has a couple of fans and two SSDs in addition to an NVME drive, and of course a GPU.
The idle power consumption will vary wildly based on the system configuration. This is true of both laptops and desktops. I've seen desktop systems idle anywhere between 94w and 124w.
I just booted up and then locked the computer, so the screen is black. Lowest I've seen on the killawat so far is just under 80 watts.for a basic system with just a ryzen APU, one hard drive, what is the approx power consumption during idle?
I'm wondering how big of a difference there is compared to an average newer 45w tdp laptop with the screen turned off.
I just booted up and then locked the computer, so the screen is black. Lowest I've seen on the killawat so far is just under 80 watts.
However, this is a 3950x on x570 mobo with a 1080Ti. The water pump is set to full speed and the AIO pump cooling the 1080Ti is also set to full speed. In addition, there are 9 fans, 8 of them LED. The water block and distro-plate are also full LED. View attachment 291716Not sure how much this helps you.
not bad. remove 8 fans and the 1080ti, and it's gotta be under 30w.
my cheapo build will only have one 12cm exhaust fan, stock cpu fan, nothing else.
What are the rest of the specs? Is this a prebuilt?i bought a killawatt and tested a new barebones ryzen 4300g desktop pc today. Just the pc tower, cpu mobo ssd. nothing else.
desktop pc sips power as good as a laptop. The 4300g behaves like the laptop chips pretty much.
Idles under 10w, and fluctuates around 7-8 watts !!!
Also a 4300g, which...you can't buy. System builders only.What are the rest of the specs? Is this a prebuilt?
I find that power consumption to be ridiculously low for a "desktop". To put that idle power in perspective, STH did some testing that showed the power consumption for a stick of DDR4 is about 2W and Crucial claims the average power consumption for 8GB of DDR3 or DDR4 memory is roughly 3W. That's what makes me think this is a prebuilt that is made with lower power consumption in mind, using SODIMS.
Yeah, I think 15-20W is about the floor for what I would consider a desktop made from off the shelf parts, and that's with very careful part selection. Getting below that requires specialized low power parts.Also a 4300g, which...you can't buy. System builders only.
That said, it's still possible to reach ~15w with a 3400g in a standard desktop, I think, with a uATX or mITX board and no RGB, a couple fans and no dGPU.
What are the rest of the specs? Is this a prebuilt?
I find that power consumption to be ridiculously low for a "desktop". To put that idle power in perspective, STH did some testing that showed the power consumption for a stick of DDR4 is about 2W and Crucial claims the average power consumption for 8GB of DDR3 or DDR4 memory is roughly 3W. That's what makes me think this is a prebuilt that is made with lower power consumption in mind, using SODIMS.
My system goes down to just around 20w on the killawatt, with no applications running, windows locked and the screen off (but I didn't go around stopping background processes), balanced power plan.
It's mini ITX, 150 W power supply, a520 board, no RGB, Ryzen 4650G (imported via Aliexpress), 2x 8 GB ram @ 3600, sata ssd. I'm sure some tweaking could shave a couple more watts, but I don't think I could get it from here to 7w (nor do I really care to).
the pc is a lenovo
https://www.lenovo.com/us/en/deskto.../500-series/IdeaCentre-5-14ARE05/p/90Q20001US
it has all standard desktop parts. desktop ram. 2x4gb sticks.
I unplugged the 7200rpm hdd for this power test because I am going to be running with ssd only.
in Windows power saver mode, the zen2 clocks down to 1.4ghz and sips power. HWINFO says the cpu package power was only a fraction of a watt during idle.
I couldn't believe it myself. But I did a side by side comparison of my new zen laptop and this desktop plugged into the killawatt.
During full load, this lenovo desktop would of course shoot up to like 60-70w.
But under normal internet browsing, the pc itself would only use like 15w max.
I tried power saver, and it only went down to 18w. The Pro 565 chipset you've got, is I think like the A300/X300 consumer chipsets; and may not be much more than a boot rom, which certainly saves some power. I'd guess your power supply may also be a bit more efficient than mine. OTOH, my cpu package power idles at 5 W in HWinfo, so that adds up.the power saver plan cuts the idle power in half.
you also have more cores, so 20w looks right.
Well, unless a computer is sleeping then RAM is never doing nothing. They constantly need to be refreshed so they don't lose the data in them and that takes electricity. The rule of thumb is a couple watts for 8GB even for slow DDR4 at stock voltage. RAM power consumption doesn't vary a lot from idle to heavy use because of how they function.these look like el cheapo ram sticks. They're CL22 3200's.
hard to believe they'd use much power doing nothing.
I just booted up and then locked the computer, so the screen is black. Lowest I've seen on the killawat so far is just under 80 watts.
However, this is a 3950x on x570 mobo with a 1080Ti. The water pump is set to full speed and the AIO pump cooling the 1080Ti is also set to full speed. In addition, there are 9 fans, 8 of them LED. The water block and distro-plate are also full LED. View attachment 291716Not sure how much this helps you.
I locked the computer and the monitor went into power save mode.is the screen black or asleep? if it’s black it’s using just as much power as a completely white background. Slightly more actually because it takes a higher voltage to rotate the pixels so they are blocking the backlight. Note that this does not apply to OLED