0
votes
2answers
75 views

How to determine if it's a motherboard or CPU issue?

Note that I read the main suggested question and my situation is different, so that's why I'm asking again. I'll explain everything in detail (this will be a little long, but I'll make it as short ...
0
votes
1answer
176 views

AMD Phenom II x4 940 Black edition Pinout?

So I got an AMD Phenom II x4 940 Black Edition. The number on it is HDZ940XCJ4DGI. It uses an AM2+ socket. I think the important part is the socket, but I'm not sure. I'm trying to find the power and ...
0
votes
1answer
144 views

Laptop CPU frequency never higher than 40% of maximum

I have a Samsung 900X4C (9 series) laptop with an i7 3517U 1.9 GHz CPU. I have noticed (using CPU-Z) that the actual frequency of the processor never goes above about 40% of the maximum. Now, I ...
2
votes
2answers
180 views

CPU power states and temperature spikes

i just noticed something really unusual on my brand new (slightly used) ASUS N550JV. During my first checks in general performance and etc, i noticed that the temperatures were unusually high for a ...
0
votes
0answers
199 views

How does the Package Power Limit affect the cpu clock

This is primarily about Intel 4th Generation Core (Haswell) CPUs. As far as I understand it, the Turbo Boost technology raises the CPU frequency until it hits the TDP limit (though it might exceed it ...
2
votes
1answer
117 views

Does the choice of CPU affect the energy budget of a commodity server farm? [closed]

How does the choice of CPU affect the energy budget of a commodity server farm? I'm wondering how much it costs per year to power the kinds of commodity servers Facebook, Twitter et al. use. Let's ...
0
votes
1answer
718 views

20+4 pin power supply to 24+4 pin motherboard [duplicate]

I'm thinking about making a small custom-build server. It would only use around 60W maximum. I don't want to pay too much so I think using an old power supply would work. The motherboard I'm ...
0
votes
4answers
199 views

PC power usage related to power supply

Not sure if this is the right place to ask such a question, but I don't see a more relevant place on stack exchange otherwise. So recently I've become kind of obsessed with becoming more efficient ...
1
vote
1answer
8k views

Do I need to replace my CPU or Motherboard, PC not powering on

My PC will not power up at all, after thinking it was the PSU I replaced that to no resolve. When I try to power on the PC the CPU fan will move about 1mm and then nothing. I tried all sorts, but it ...
0
votes
1answer
97 views

Dual socket with single CPU power connection

Is it harmful for a processor and/or motherboard if the motherboard is a dual socket motherboard, only one socket is filled with a (compatible) processor, but two processor power plugs are plugged ...
2
votes
1answer
214 views

Resurrecting an old computer. Powers on, does not boot

I have an old Dell Optiplex GX1 that I want to revive. If I plug it in, the power comes on. However, the power switch has no effect (can't turn it on or off, have to unplug it to stop power). I ...
0
votes
2answers
2k views

Computer will not turn on after replacing CPU, PSU, and motherboard

I recently replaced the PSU, motherboard, and CPU after my computer shut off randomly. Now when I try to turn it on, I get no response. I've tried: Taking out the RAM A CMOS reset Swapping out the ...
3
votes
2answers
432 views

CPUs: more transistors, less voltage?

I have read in an article that newer CPU cores have narrower circuit tracks so more transistors can fit in the core. The author wrote that since there are more transistors, the voltage is reduced. ...
0
votes
3answers
2k views

Will turning off cores in an i7 save any energy?

I've got a Core i7 950. Which eats a bit too much (20 Watt at idle, 133 Watt under load), and I would like to get the lowest energy consumption possible. If I turn off some of the cores. Will that ...
0
votes
1answer
70 views

Does a MBP with is a lower base frequency CPU - but same generation - draw less power?

When purchasing a new MBP I want to optimize it for mobile usage. There are different quad-core i7 processor available for the 15'' MBP. See the list here. While they have different features, all of ...
0
votes
2answers
586 views

After replacing CPU cooler, PC doesn't power on

So I bought a new AC Freezer 7 Pro to replace the stock cooler. I fixed it on, and at first it only works for a few seconds, then shuts off. Of course, I realised it was the thermal shutoff. I saw ...
27
votes
8answers
3k views

Where does power consumption go in a computer?

Today we had a weird discussion over lunch: What exactly causes power consumption in a computer, particularly in the CPU? (ETA: For obvious reasons I don't need an explanation why a hard drive, ...
1
vote
0answers
787 views

Effects of enabling DVFS in a CPU

I came up with this energy regulating software called Granola while reading at Ghacks.net I downloaded and installed the software but you need to enable the DVFS function in the CPU. I booted up and ...
30
votes
14answers
5k views

Removing the CPU while the power is on [closed]

What will happen if I remove the CPU while the power is on? Does anything happen to the computer? Has anyone tried this?
5
votes
1answer
118 views

Need to find a power adapter

Just finished upgrading the heatsink and fan in my wife's computer (dropped the temperature about 20 degrees on an AMD), and everything works great except one problem. The BIOS is reporting that it ...