# Watts given off by a 2000ghz XP

#### AmbientFiction

##### Senior Folding Zombie
Would the watts given off by a 2000ghz XP and a 1700+ clocked to 2000ghz be the same number?

Also what type of temps might I get if I had a TEC rated for double the watts that the cpu turns out.

IT would depend on how much voltage you are running through it. If it were the same amount and every other variable were the same, then yes, it would be the same amount.

Well I figure to get that 1700+ to 2ghz I would have to use about 2.0 volt

umm

2000ghz ???

AMD lists the maximum heat dissipation for each XP model ( I think the Pmax is 72 Watts for the XP2000). The formula for calculating overvolted/overclocked CPU heat is:

Pmax*( V/V0)^2 * (F/F0)

Where V0 is design Voltage (1.75V), and F0 is the design frequncy of the processor. It's just a rough approximation.

Last edited:
schoolie said:
AMD lists the maximum heat dissipation for each XP model ( I think the Pmax is 72 Watts for the XP2000). The formula for calculating overvolted/overclocked CPU heat is:

Pmax*( V/V0)^2 * (F/F0)

Where V0 is operating Voltage (1.75V), and F0 is the rated frequncy of the processor. It's just a rough approximation.

Ok just to make sure. V = to the OC voltage and F = to the OC on the CPU?

Theres a program out there that will calculate the amount of wattage dissipated by the cpu. It can even determine the temp that you can expect by inputing the C/W of your heat solution and the ambient temp. I forget the name of it, but Im pretty sure that you can find it at www.aoafiles.com

I think the program is called "radiate". Yes f is the operating frequency, and V is the operating Voltage, anf V0 and f0 are the design Voltage and frequency.

Thank you Thank you schoolie and everyone else that has helped on this. So what happens when you double the watts of the TEC? How cold am I looking at a cpu getting if I can properly cool the TEC with water cooling?

So can someone check this to make sure I got it right.

72*(2.0volts/1.75default)^2 *(2000 OC/1470default)

I have 122 watts is that correct?

Now if I was to take a TEC that is 300 watts and could cool the top side like it nneded to be cooled in order for it work right. How low would my temps be?

The XP1700 puts out 64W at max load, according to AMD specs. That's the value you should use for Pmax.

Also I was wrong. The XP2000 puts out 70W.

Sorry, I can't answer the TEC question.

Ok well with that I get a raidate wattage off of the CPU at 91 watts rounded up. Is that correct?

64*(2.0/1.75)^2*(2000/1470)

I have 91 wats is that correct?

If anyone could tell me what types of temps I might be looking at if I used a 300w Tec on it or is there just not enough info to tell. I am going to do a super cooling project. So I am trying to get all my math right so I can figure out if I need a larger TEC or not. I want to hit some where around -10ºF to 10ºF full load if not even lower than that.

I get 114.3W, using 1463MHZ as the XP1700 rated freq.

Ok well I just gor 124. So I don't know what I am doing wrong. Anyway you turn it that TEC that I want to put on it is still going to be double the rated power. All the way up to 165 watts. So I am at least going to be double the rated need for cooling.

Any Tec gods out there I would like your imput into what you think my overall temps would be for my system.

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