Real Athlon current draw ?

gmat · 12-04-2002, 09:08 AM

For my PSU build-up project, i need to know the REAL current draw from AMD CPUs (and their mobo). If someone could measure the current on 5V and 3.3V lines for:
- Thunderbird >=1GHz
- XP >=2.4GHz,
I would be very glad.

I really want the current in the wires that go to the motherboard, no other one. And please state which GFX card and if there's something on PCI bus...

Since87 · 12-04-2002, 09:32 AM

How will you distinguish CPU current draw from the current draw of all the other devices using those rails?

dax · 12-04-2002, 09:38 AM

hmm doesn't AMD releases specs about this? And if you purely want it for the cpu, measure it on the power pins

MeltMan · 12-04-2002, 10:05 AM

But to test current draw you have to put the meter "in line" with the circuit, which would mean masking off the pin on the cpu and hooking the meter in-between it and the mobo...

dax · 12-04-2002, 10:06 AM

true... i never said it was easy to do though

Since87 · 12-04-2002, 10:15 AM

Quote:

Originally posted by MeltMan
But to test current draw you have to put the meter "in line" with the circuit, which would mean masking off the pin on the cpu and hooking the meter in-between it and the mobo...

You mean "pins". I haven't looked at the pinout of the AMD CPU's but I'll guarantee there are a lot of seperate power pins.

dax · 12-04-2002, 10:19 AM

yea many many power pins... but amd must have some specs concerning this, or atleast they must release it to mobo makers

gmat · 12-04-2002, 10:46 AM

No, i meant current draw to the whole mobo, ie mobo + CPU + GFX card + maybe SCSI card, but no peripherals (i'll power the HDDs and optical drives separately)

dax · 12-04-2002, 11:00 AM

that is going to vary alot depending on the GFX card, what are you planning to do anyhow? (i love psus)

gmat · 12-04-2002, 11:10 AM

You can read the thread "fanless psu buildup - part one" to know what my plans are...
I want the GFX card included of course, i'll have to power it too... Any 'powerful' card will do (Geforce2,3,4 for example)
So anyone has answers ?

Brad · 12-05-2002, 03:26 AM

my 2 XP2200+'s draw around 11.5a of 12v at 1.65v, 1800mhz. That was the total draw with one 256mb stick of ram, and an s3 virge pci.

gmat · 12-05-2002, 08:46 AM

thanx. Any figure on those 3.3V and 5V wires ?

Brad · 12-06-2002, 01:32 AM

the mpx2 uses 12v for virtually everything...

12-04-2002, 09:08 AM	#1
gmat Thermophile Join Date: Mar 2001 Location: France Posts: 1,221	Real Athlon current draw ? For my PSU build-up project, i need to know the REAL current draw from AMD CPUs (and their mobo). If someone could measure the current on 5V and 3.3V lines for: - Thunderbird >=1GHz - XP >=2.4GHz, I would be very glad. I really want the current in the wires that go to the motherboard, no other one. And please state which GFX card and if there's something on PCI bus...

12-04-2002, 10:05 AM	#4
MeltMan Cooling Savant Join Date: Aug 2001 Location: KS Posts: 374	But to test current draw you have to put the meter "in line" with the circuit, which would mean masking off the pin on the cpu and hooking the meter in-between it and the mobo... __________________ MeltMan Lurker Supreme!

12-05-2002, 03:26 AM	#11
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	my 2 XP2200+'s draw around 11.5a of 12v at 1.65v, 1800mhz. That was the total draw with one 256mb stick of ram, and an s3 virge pci. __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

12-06-2002, 01:32 AM	#13
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	the mpx2 uses 12v for virtually everything... __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

12-04-2002, 09:32 AM	#2
Since87 Pro/Guru - Uber Mod Join Date: Sep 2002 Location: Indiana Posts: 834	How will you distinguish CPU current draw from the current draw of all the other devices using those rails?

12-04-2002, 09:38 AM	#3
dax Cooling Neophyte Join Date: Nov 2001 Location: Ghent, Belgium Posts: 83	hmm doesn't AMD releases specs about this? And if you purely want it for the cpu, measure it on the power pins

12-04-2002, 10:06 AM	#5
dax Cooling Neophyte Join Date: Nov 2001 Location: Ghent, Belgium Posts: 83	true... i never said it was easy to do though

12-04-2002, 10:19 AM	#7
dax Cooling Neophyte Join Date: Nov 2001 Location: Ghent, Belgium Posts: 83	yea many many power pins... but amd must have some specs concerning this, or atleast they must release it to mobo makers

12-04-2002, 10:46 AM	#8
gmat Thermophile Join Date: Mar 2001 Location: France Posts: 1,221	No, i meant current draw to the whole mobo, ie mobo + CPU + GFX card + maybe SCSI card, but no peripherals (i'll power the HDDs and optical drives separately)

12-04-2002, 11:00 AM	#9
dax Cooling Neophyte Join Date: Nov 2001 Location: Ghent, Belgium Posts: 83	that is going to vary alot depending on the GFX card, what are you planning to do anyhow? (i love psus)

12-04-2002, 11:10 AM	#10
gmat Thermophile Join Date: Mar 2001 Location: France Posts: 1,221	You can read the thread "fanless psu buildup - part one" to know what my plans are... I want the GFX card included of course, i'll have to power it too... Any 'powerful' card will do (Geforce2,3,4 for example) So anyone has answers ?

12-05-2002, 08:46 AM	#12
gmat Thermophile Join Date: Mar 2001 Location: France Posts: 1,221	thanx. Any figure on those 3.3V and 5V wires ?

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