Soldato
Its nothing special just a bog standard meter for any plug in device. Do a google for "Plug-In Mains Power and Energy Monitor" £12 ish.Andrew G said:
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Silly power requirements, an over hyped myth?
- Thread starter Tom|Nbk
- Start date
would be great if nvidia/ati would build GPUs which have a secondary low power gpu inside that it goes to once idel. no need to keep 800million transistors on at idle. less than 10 million would probably do!
having said that, could one of you guys with the watt meter do an ideal reading without your graphics card. that way we can figure out how much the actual graphics card draws and not the whole system
seriously considering buying a laptop or building cheap integrated graphics build as a idel computer, if the savings justify it!
having said that, could one of you guys with the watt meter do an ideal reading without your graphics card. that way we can figure out how much the actual graphics card draws and not the whole system
seriously considering buying a laptop or building cheap integrated graphics build as a idel computer, if the savings justify it!
Soldato
probably a typo of idle.lay-z-boy said:What is this 'idel' you speak of?
Some GPU's do clock themselves down now in 2d mode with the right drivers and software which saves a few watts. The 2nd GPU thing tho is a great idea, I wonder why it hasn't been done yet? Old school vid cards used very little power, yet manage 2d stuff fine.
Having a low power rig for surfing , and a high power one for gaming seems good, but I think it would be better to have one rig that would do it all... ~300W when gaming, then you could clock it down when surfing so it uses ~100W with a few clicks of the mouse... no booting or shutting down needed.
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Soldato
19" Samsung TFT uses ~37W and my 40" Sony 40W2000 uses up to 185Wchaparral said:
MikeHunt79 said:probably a typo of idle.
Some GPU's do clock themselves down now in 2d mode with the right drivers and software which saves a few watts. The 2nd GPU thing tho is a great idea, I wonder why it hasn't been done yet? Old school vid cards used very little power, yet manage 2d stuff fine.
Having a low power rig for surfing , and a high power one for gaming seems good, but I think it would be better to have one rig that would do it all... ~300W when gaming, then you could clock it down when surfing so it uses ~100W with a few clicks of the mouse... no booting or shutting down needed.
yep i have been tying to see if it is possible with software
the 8800gtx/gts doesn’t clock down when in 2D, so its going full throttle when playing games or typing a post for OcUK. got Rivatuner to clock that down for me to half mem and core when in 2d, but its a bit of a pain as i need to change it when i want to play a game (doesn’t take long, probably 2 seconds, but it should be automatic, the core goes up automatically but the mem doesn’t)
also found and interesting bit of software for cpu underclocking, it can automatically underclock and undervolt depending on how much of the cpu is being used. my 3ghz overclcoked c2d is doing 1.2GHZ on idel typing this.
i dont know how much these two save me in idle but my GPU temp went down by 9degrees and my CPU temp by 11 degrees, so they are working.
i assume it saved half on the GPU so like 50-60watts and probably another 40-50watts off the CPU.
software used is Rivatuner for the GPU and “Rightmark CPU clock” for the CPU. give them a try,
if someone with a watt meter could do it, would be uber
MikeHunt79 said:probably a typo of idle.
Some GPU's do clock themselves down now in 2d mode with the right drivers and software which saves a few watts. The 2nd GPU thing tho is a great idea, I wonder why it hasn't been done yet? Old school vid cards used very little power, yet manage 2d stuff fine.
Having a low power rig for surfing , and a high power one for gaming seems good, but I think it would be better to have one rig that would do it all... ~300W when gaming, then you could clock it down when surfing so it uses ~100W with a few clicks of the mouse... no booting or shutting down needed.
yep idle.
some GPUs automatically clock down in 2D and also undervolt in 2D, sadly the 8800gtx i have stays the same in 2D and 3D so is a power hog eating up 125watts even if i turn the monitor off and am in 2D mode.
GPUs have many blocks of transistors that are repeated to make the whole die, like the 8800gtx has 128 stream processors? i believe. should just turn 120 of them off and stick with 8 in 2D mode. saving 90% power and heat and sound. Cant really see why that would be difficult. probably dont bother as marketing would be too hard to push energy efficient products.
same with CPUs, i dont need dual core 3GHX while idling, turn one off and clock the remaining one down to 500mhz.
tbh, id rather us stay at current performance for 2 years and intel/amd concentrate on bringing much lower power versions of what we have currently rather than pushing 150watt processors and 200 watt GPUs..
Soldato
Underclocking a 8800 card will not give you a much lower power use as you are not lowering the GPU voltage so it will still use a lot of power.
Trust me, if it was easy to get the 8 series to have a 2D / 3D mode, they would have done it by now. It is by no means easy to get an 8 series to do 2d/3d modes once you understand how the core operates. (with the drivers)
G92 could be different though.
G92 could be different though.
Soldato
Excactly, lots of transistors = lots of power needed.lay-z-boy said:Trust me, if it was easy to get the 8 series to have a 2D / 3D mode, they would have done it by now. It is by no means easy to get an 8 series to do 2d/3d modes once you understand how the core operates. (with the drivers)
G92 could be different though.
Associate
lay-z-boy said:Trust me, if it was easy to get the 8 series to have a 2D / 3D mode, they would have done it by now. It is by no means easy to get an 8 series to do 2d/3d modes once you understand how the core operates. (with the drivers)
G92 could be different though.
Rivatuner. i use it to clock both memory and core down in 2d
Memory doesn't entirelywork though And iirc power consumption varies linearly with frequency but voltage squared.
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Soldato
"idle"....what is this "idle" you speak of? I want my card to work 100%, 100% of the time 
No pussying around ffs guys Those transistors were put in our cards for a reason, and there doesnt seem to be any point in letting them just sit there......they might just decide to migrate off my gfx card and floculate lower down in my case, forming some silly mass that coule possibly ressemble a physics card.
No pussying around ffs guys Those transistors were put in our cards for a reason, and there doesnt seem to be any point in letting them just sit there......they might just decide to migrate off my gfx card and floculate lower down in my case, forming some silly mass that coule possibly ressemble a physics card.
Soldato
Yes it does.Fx-Overlord said:
A commonly used expression is for power P, P=kLV²F, where L is load (software), V is the core voltage, F is chip frequency, and k is an empirical constant for the chip.
And delta P, change in power. The constants cancel.
P2 = P1 x (F2/F1) x (V2/V1)²
Or a little easier to understand
Overclocked Watts = Default Watts x (Overclocked Mhz / Default Mhz) x (Overclocked Vcore / Default Vcore)²
Say a chip uses uses 130W (-40W average static %) at 575Mhz,
at 500Mhz, 90 x 500/575 = 78W* Plus the 40W = 118W
Or say a chip at 1.30v and a 0.10v voltage decrease.
130 x (1.2/1.3)² = 110W*
*Its a bit of an approximation, apart from dynamic power, theres also static power from leakage and Tjunction temps. These increase with frequency a bit as well, but not in the same range. Also in a graphics card, obviously shaders and memory domains have different frequencies and voltage. If you knew the values for each part you could get a good idea of the total power change.
Here's an online version, where it says overclock just think change +ve or -ve
http://newstuff.orcon.net.nz/wCalc.html
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lay-z-boy said:Trust me, if it was easy to get the 8 series to have a 2D / 3D mode, they would have done it by now. It is by no means easy to get an 8 series to do 2d/3d modes once you understand how the core operates. (with the drivers)
G92 could be different though.
can do it in rivatuner pretty easy. so it is a software issue. i just think Nvidia are being lazy on this one?
unless underclocking it damages it in any way?
fornowagain said:Its nothing special just a bog standard meter for any plug in device. Do a google for "Plug-In Mains Power and Energy Monitor" £12 ish.
a cheap way to get hold of one of these for a while is to
buy off ebay
use item
throw back on ebay
likely to cost you only postage of £2-3 and get you two positive feedbacks in the process.
Soldato
I'm going to bother for 12 quid?
Associate
Ive just ordered one from flea bay.
I recently had my electricity meter replaced, and Im sure its charging me way too much. I want to see if its logging correctly, and with this I will be able to exactly measure that.
And secondly, I will be able to contribute to this thread! Am interested in how much my system is consuming.
I recently had my electricity meter replaced, and Im sure its charging me way too much. I want to see if its logging correctly, and with this I will be able to exactly measure that.
And secondly, I will be able to contribute to this thread! Am interested in how much my system is consuming.
