Athlon Power consumption chart?

[Actaeon]

I'm interested in a chart which shows power consumption of Athlons. I plan on upgrading my CPU, and I need to see the differences in voltage/wattage between my Athlon 1.13@1.2, and some AthlonXPs. I can't find it at google, and I did a search here, I couldn't find one.

Thanks
Actaeon

 

[Chaotic42]

I'm curious about this too. I'm trying to find out the 3.3/5/12V demands of my system to see if I need a new PSU.

Sorry, I know you saw this replied to and wanted an answer

 

[Actaeon]

Originally posted by: Chaotic42
I'm curious about this too. I'm trying to find out the 3.3/5/12V demands of my system to see if I need a new PSU.

Sorry, I know you saw this replied to and wanted an answer

Hehe, you're right, I hit refresh, saw a reply, and I was hoping it was a answer. Oh well, just wait a little longer I suppose

 

[mechBgon]

How about Sandpile.org? Ironically, looks like they have a typo in Max Power and listed the 1100 Tbird twice where it should have been 1100, then 1133. If that's what happened, then typical power is 56W and max is 63W for your 1133, and you can scale that up roughly proportionately to account for your OC, I would imagine.

It looks like a Palomino-core AthlonXP 1700+/1466MHz would be the equivalent to the 1133@1133. When the Thoroughbred-core AthlonXP's come out, the wattages should be a little lower but good cooling will be critical due to their lower surface-area-to-wattage ratio.

 

[Actaeon]

Thanks for the Link, I also found this.

Actaeon

 

[Chaotic42]

So are procs all on the 3.3V rail?

Any 5V on there? 5V is my main concern.

 

[mechBgon]

On most power supplies, the 3.3 and 5 apparently draw from a common source and compete with eachother, so keep in mind that it might end up being the same difference. You can find AMD's methodology for PSU-capacity calculation here, they recommend adding the wattage of the CPU plus 80% of the combined peak demands of the other components to get your minimum PSU capacity. With the expected lifespan of a PSU being around 3 years, it might pay to buy something a little bigger than you need so it's not a paperweight later.

Antec's TruePower series give the 3.3V and 5V lines independent circuits, so a TruePower 330 might be a good choice. With independent circuits, its combined 3.3V + 5V power is almost as high as Antec's old 400W PP412X (242W versus 245W). I'm using an Enermax 365W on a moderately loaded AthlonXP system, they're another good pick.

 

[Chaotic42]

Originally posted by: mechBgon
With the expected lifespan of a PSU being around 3 years, it might pay to buy something a little bigger than you need so it's not a paperweight later.

Heh, that's my dilemma. I bought a 350W PC Power and Cooling PSU not too long ago (2 years?).

It does 32A on the +5V. Not sure about the 3.3V. I might go with a good 550-600W. I'm going to be running a dual Athlon system, and they recommend 30A on the +5V.

Thanks

 

[mechBgon]

Dual... Sweet! Hope you will join the AnandTech distributed-computing team and put all that goodness to use

When the first dual-CPU AMD board came out, it used a PSU with a special connector. Nowdays that is not generally the case, except for Tyan's Thunder K7-family boards. However, this unit and others like it were built for the demands of dual-AMD systems. I looked at the specsheet for the special PSUs that Tyan lists for the Thunder K7X, to try to gain insight on what amperage ratings are typical for powering a dual-AMD system, but came away confused. The Antec 510W unit is spec'ed lower than their TruePower 330 or PP412X in the 3.3 + 5 rating, while the Delta is a beast with 47A on 3.3V alone, and independent circuits for 3.3V and 5V. Most servers have more drives, but a typical enthusiast system compensates with a power-hungry video card.

If it were me, I would get an Antec TP430 or higher, or an Enermax 465 or 651, or maybe a Sparkle Power 400W or one of the PC P&C units if you want another. The PC P&C unit you have now would probably work, but it might have to strain when you ran the system hard.

 

[CAK]

I think most people would be suprised with what you can get away with now. I have made 2 dual athlon setups(xp1600+ and 1700+) that both run on a enhance 350watt PS(28A 3.3v, 30A 5v, 220watt combined). Both have the usual parts and 2 7200rpm IDE HD's each. I'm not saying get the enhance but just trying to give you an idea of power consumption.

 

[Chaotic42]

Originally posted by: mechBgon
Dual... Sweet! Hope you will join the AnandTech distributed-computing team and put all that goodness to use

One step ahead of you man. I joined about a week and a half ago. I'm almost at 1000 DP in the ECCp thing.

Yeah, with my dual I'll be at about 1.95M it/s.