i got what you said, but my question is..
why does a thing need more power when it is runs faster..
i mean, its the procesor runnning faster ,..ok..
ram running just a litle faster ... ok.
agp and pci are locked..so they don't run faster...
when i raise fsb ,say to 200mhz., what things will be running faster... my proc and mainboard? or what
so what exactly causes more power requriemnts....does anybody know the science behind it?
noman, generally when you are overclocking, you are raising the speed of the processor and memory beyond their specified ratings and often you have to raise the voltage for ram and processor for them to perform at the higher speeds. When you raise the voltage, you will also raise the power usage of the overclocked parts also. Plus, you also get a greater power usage of the overclocked parts (processors mostly) due to the higher speed it is operating at, not even accounting for the power usage increase from raising the voltage higher.
Since you have gotten a mobile XP though, you can overclock the fsb speed and lower the multiplier and keep your processor's speed around 2-2.2 GHz and you should be able to kepp the vcore volts down to 1.65v or less, minimizing the power draw on your psu and still have a fast computer. Raising the fsb speed will increase your memory bandwidth, which will make better performance. A computer running at 2 GHz on a 166 fsb won't perform as well as a computer running at 2 GHz on a 200 fsb due to the increased memory bandwidth and efficiency. Another thing to think about is that raising the voltage on the memory will put much less extra drain on the psu than raising the vcore on the processor, as memory isn't a high current part anyways.
Another closely related reason involves system stability. When you OC your system is less tolerant of minor variations. One source of problem variations can be fluctuating voltages. A bigger psu will usually run more stable.
Parts with higher freq need more current, thats all there is to it. That goes for everything! Not only that but since you are putting parts out of spec they wont work within the voltage specs anymore. So you raise the voltage to make it stable. Voltage times current is your wattage. You can easily tripple the wattage used by a 35W XP-M.
ok,
now u ppl are answering wht i asked..so now...
if i raise the multi... my procesor will need more voltage right?
but if i raise fsb then i won't have to raise voltage much...
again the dumb question...
overclocked to 3200 i-e 11*200 ,,,if it runs on 1.65v ....then its not much power withdrawn right?
but if do 2400 mhz 12*200 then i will need more voltage like 1.7 or something...
am i saying correct?
Raiseing the multi will require more power. Anything you do to increase MHz will take more power whether it be the multi or FSB.
One way to save power overall in your system is to only overclock with your multi. Then the only thing that is taking MORE than default power is the CPU. Overclocking the FSB will require more power not only to the CPU but the RAM and Northbridge as well since those parts change frequencies as well.
Not really sure how much of a difference that is and it could be very little of a difference. So dont take that into consideration when OCing.
Just OC your RAM as far as it will go with a low multi and when you find the RAMs max OC the multi to find max CPU.
i read in some article that its the 3.3v or 5v that provides current to the electronic components of mainboard,and ram and cpu...
also i read that 12v is for drives' motors and fans usually.....
so 3.3v and 5v volts must be stable and amperage should be high..am i right?
from where does vcore come 3.3v or 5v?
does voltage fluctuate when i put more load?
also tell me how can i put load..or stres my psu to see if it fluctuates under full load..
Noman correct me if I'm wrong but I thought you're goal was simply to reach 2.2ghz on a 2500mobile cpu.
Basically you will have it running at 3200xp speeds which is standard on todays socket A Motherboards. Unless you truley get a piss poor 200watt power supply from a few years ago you're not going to have a problem reaching this at all at a mear 1.575 vcore.. (thats what my mobile does at 2.2) no strain on the power supply at all. You're chipset and memory will still be at stock voltages.
Your 12v rails etc become important when you really start pushing it at 2.7ghz and 2.8ghz + with a vcore well above 2.0v or a high fsb of 240+.
Right off the bat you need to think of you're mobile cpu as a golden barton 3200xp. It's able to run at the same speed as the regular Barton with a .75 lower vcore as in my case. The best thing about it is it's half the price
one more thing...if u dont know..i have got a 1.35v mobile 2400.
i don't want to stop at 2200 ...i want to go a bit higher.. may be 2500 will be the last thing i do..i mean the ultimate goal..
my ram is not so goood..its latency is 3 (or CSA..whatever)
kingston valueram 2*256 mb 400 mhz.
i am now thinking.. that ppl are over stressing the need for a higher power supply.... somone told me that 1.35v 2400 can run 200*12=2400mhz at 1.65v... so i dont see any need for much more power....although stabilitly will be an issue with psu..
i am not having crazy raid setups..or 3 optical drives etc etc...
just few things.....
so.. ppl correct me if i am wrong somewhere..considering i want to max out at 2500mhz
If you have the system now, what are you currently overclocked to? Include cpu frequency, FSB, multi, vcore, vdimm, and what voltages your rails are at. If the rails are within +/- 5% of the spec, you should be fine.
No matter how much power you have the particular CPU you have determins how high an OC you can get.
Some batches of CPUs OC better than others...
Reading through this therad I see that you are using the mobile AMD, my guess is that its not going to OC too well as they have throttled down the CPU to work in a mobile enviroment.
Fact is on any system you OC there are going to be many factors, CPU and power being just 2 factors. You have to include RAM and the other parts like Video card, sound card and even the hard drive...
Then you have BIOS which can also have an effect...
Reading through this therad I see that you are using the mobile AMD, my guess is that its not going to OC too well as they have throttled down the CPU to work in a mobile enviroment.
The mobile bartons tend to overclock very well, and are multiplier unlocked, another nice bonus.
From all my research when I bought my Mobile prety much the rule of thumb stable overclock on air went with it's rating, I know weird but you research it and you will see the same thing.
2400 mobile 2400mghz
2500 mobile 2500mghz
2600 mobile 2600mghz
All the guys hittign 2.7 and 2.8ghz Had the Vcores way up pas 2.0v and a lot of them were on water. I've hit 2550ish stable with an fsb of 420ish on my 2500m. Went up to in the 2600ghz+ range but temps held me back. Once my chip would hit 52c lock up and reboot. With some researching I saw the same thing. I just got my water pump and water block in so when I get the time hopfully I'll be able to max this thing out.
Noman don't expect to see 2400mhz at 1.65v it will be closer to 1.80v. I'll beleive the 1.65v when I see it. Also don't go too cheap on the power supply since you will be pushing it up to 2500mghz. There are some decent power supplies in the 30 to 60 dollar range.
got ur point guys.....im going to get the best available here(pakistan)...its 350w (sticker) but i heard that it gives stable voltages...
system is not built yet..
my things
2400m 35w( 1.35v default vcore)
alx 800 with tt smartfan2
abit nf7-s(inegrated audio-soundstorm)
kingston valueram 2*256 pc 3200 (timing or something like that is 3-3-3)
no gfx yet....will get later...currently i will be using an ancient pci gfx card..
so.. could you make an estimate how far i could go with this setup?
Comments
If you want to OC, your PSU should have a Minimum of 20A on the 12v rail, 30A on the 5v & 30A on the 3.3v.
I suggest this PSU
N1!
why does a thing need more power when it is runs faster..
i mean, its the procesor runnning faster ,..ok..
ram running just a litle faster ... ok.
agp and pci are locked..so they don't run faster...
when i raise fsb ,say to 200mhz., what things will be running faster... my proc and mainboard? or what
so what exactly causes more power requriemnts....does anybody know the science behind it?
Since you have gotten a mobile XP though, you can overclock the fsb speed and lower the multiplier and keep your processor's speed around 2-2.2 GHz and you should be able to kepp the vcore volts down to 1.65v or less, minimizing the power draw on your psu and still have a fast computer. Raising the fsb speed will increase your memory bandwidth, which will make better performance. A computer running at 2 GHz on a 166 fsb won't perform as well as a computer running at 2 GHz on a 200 fsb due to the increased memory bandwidth and efficiency. Another thing to think about is that raising the voltage on the memory will put much less extra drain on the psu than raising the vcore on the processor, as memory isn't a high current part anyways.
now u ppl are answering wht i asked..so now...
if i raise the multi... my procesor will need more voltage right?
but if i raise fsb then i won't have to raise voltage much...
again the dumb question...
overclocked to 3200 i-e 11*200 ,,,if it runs on 1.65v ....then its not much power withdrawn right?
but if do 2400 mhz 12*200 then i will need more voltage like 1.7 or something...
am i saying correct?
One way to save power overall in your system is to only overclock with your multi. Then the only thing that is taking MORE than default power is the CPU. Overclocking the FSB will require more power not only to the CPU but the RAM and Northbridge as well since those parts change frequencies as well.
Not really sure how much of a difference that is and it could be very little of a difference. So dont take that into consideration when OCing.
Just OC your RAM as far as it will go with a low multi and when you find the RAMs max OC the multi to find max CPU.
i read in some article that its the 3.3v or 5v that provides current to the electronic components of mainboard,and ram and cpu...
also i read that 12v is for drives' motors and fans usually.....
so 3.3v and 5v volts must be stable and amperage should be high..am i right?
from where does vcore come 3.3v or 5v?
does voltage fluctuate when i put more load?
also tell me how can i put load..or stres my psu to see if it fluctuates under full load..
Not sure about vore.
Add as many devices as possible. HDDs, fans, Optical drives, PCI cards, attached devices and Overclocking is the biggest way to draw more power.
Basically you will have it running at 3200xp speeds which is standard on todays socket A Motherboards. Unless you truley get a piss poor 200watt power supply from a few years ago you're not going to have a problem reaching this at all at a mear 1.575 vcore.. (thats what my mobile does at 2.2) no strain on the power supply at all. You're chipset and memory will still be at stock voltages.
Your 12v rails etc become important when you really start pushing it at 2.7ghz and 2.8ghz + with a vcore well above 2.0v or a high fsb of 240+.
Right off the bat you need to think of you're mobile cpu as a golden barton 3200xp. It's able to run at the same speed as the regular Barton with a .75 lower vcore as in my case. The best thing about it is it's half the price
scotty...
one more thing...if u dont know..i have got a 1.35v mobile 2400.
i don't want to stop at 2200 ...i want to go a bit higher.. may be 2500 will be the last thing i do..i mean the ultimate goal..
my ram is not so goood..its latency is 3 (or CSA..whatever)
kingston valueram 2*256 mb 400 mhz.
i am now thinking.. that ppl are over stressing the need for a higher power supply.... somone told me that 1.35v 2400 can run 200*12=2400mhz at 1.65v... so i dont see any need for much more power....although stabilitly will be an issue with psu..
i am not having crazy raid setups..or 3 optical drives etc etc...
just few things.....
so.. ppl correct me if i am wrong somewhere..considering i want to max out at 2500mhz
Some batches of CPUs OC better than others...
Reading through this therad I see that you are using the mobile AMD, my guess is that its not going to OC too well as they have throttled down the CPU to work in a mobile enviroment.
Fact is on any system you OC there are going to be many factors, CPU and power being just 2 factors. You have to include RAM and the other parts like Video card, sound card and even the hard drive...
Then you have BIOS which can also have an effect...
The mobile bartons tend to overclock very well, and are multiplier unlocked, another nice bonus.
My main point was that he wants to get to 2500 and is conserned about the PSU and really there is a lot more to it than that.
Even if he gets RAM that someone else says works with that CPU and a solid PSU there are other factors that determine how high an OC he can get.
Just because one guy was successful at getting to 2500 dosen't maen that another guy will...
"g"
2400 mobile 2400mghz
2500 mobile 2500mghz
2600 mobile 2600mghz
All the guys hittign 2.7 and 2.8ghz Had the Vcores way up pas 2.0v and a lot of them were on water. I've hit 2550ish stable with an fsb of 420ish on my 2500m. Went up to in the 2600ghz+ range but temps held me back. Once my chip would hit 52c lock up and reboot. With some researching I saw the same thing. I just got my water pump and water block in so when I get the time hopfully I'll be able to max this thing out.
Noman don't expect to see 2400mhz at 1.65v it will be closer to 1.80v. I'll beleive the 1.65v when I see it. Also don't go too cheap on the power supply since you will be pushing it up to 2500mghz. There are some decent power supplies in the 30 to 60 dollar range.
system is not built yet..
my things
2400m 35w( 1.35v default vcore)
alx 800 with tt smartfan2
abit nf7-s(inegrated audio-soundstorm)
kingston valueram 2*256 pc 3200 (timing or something like that is 3-3-3)
no gfx yet....will get later...currently i will be using an ancient pci gfx card..
so.. could you make an estimate how far i could go with this setup?