### Am I getting this mobo puzzle right ?...

Posted:

**Tue Aug 14, 2007 10:47 am**Please read the following information, and see if you agree with my final conclusion:

At a thread named "Two 690G builds", Frank2003 compared the following motherboards, and got the following results:

1.

2.1ghz @ 1.056V (orthos stable 24hours): idle: 36W, load: 63W

1.0ghz @ 0.88V, 31W, idle (under CCPUID control)

1.8ghz @ 0.976V, 55W, load (under CCPUID control)

2.

2.1ghz @ 1.056V (orthos stable 24hours): idle: 52W, load: 72W

1.0ghz @ 0.88V, 44W, idle (under CCPUID control)

1.8ghz @ 0.976V, 65W, load (under CCPUID control)

Now, according to this comparison, my pick was definitely the Biostar. The Gigabyte motherboard looks *horrible* in comparison.

But this isn't the end of the story.

At a thread named "My Biostar TF7025-M2 Review: Biostar Raises the Bar", Amourek found the following results for the TF7025 mobo:

1.28Ghz, 0.850V: 43W idle, 53W during Orthos (Small FFT)

2.00Ghz, 1.025V: 47W idle, 67W during Orthos (Small FFT)

2.71Ghz, 1.275V: 57W idle, 102W during Orthos (Small FFT)

Now, this addtion, by itself, doesn't relate in any way to Frank2003's results, BUT, things become interesting when you add the following piece of information to the puzzle:

At a thread named "My Biostar TA690G Review: mATX Overclocking Gem", Amourek found the following results regarding the Biostar TA690G (which is the same mobo that Frank2003 was using), using *

5.0 x 253Mhz = 1.27Ghz, 0.900V, 62W, 71W

7.0 x 253Mhz = 1.77Ghz, 1.100V, 64W, 83W

9.5 x 253Mhz = 2.40Ghz, 1.275V, 70W, 108W

*************************************

Now, by extrapolating using the information given here, and using Frank's results as reference, here is the power consumption for all three boards, on the same scale, for ~0.9V @ idle:

Gigabyte GA-MA69GM-S2H =>

Biostar TA690G-AM2 =>

Biostar TF7025-M2 =>

And again, the system that these figures relate to, is Frank's system, which consists of:

* AM2 Brisbane 4000+, 2.1ghz

* 2 x 1GB DDR2 memory

* Seagate 750GB 7200rpm SATA drive

* 120W picoPSU with 80W brick

Now, what I find almost impossible to believe, is that once you replace the seagate desktop hard drive, with a laptop hard drive, the Biostar TF7025-M2 result should drop to ~

At a thread named "Two 690G builds", Frank2003 compared the following motherboards, and got the following results:

1.

**Biostar TA690G-AM2 (latest 605 BIOS)**2.1ghz @ 1.056V (orthos stable 24hours): idle: 36W, load: 63W

1.0ghz @ 0.88V, 31W, idle (under CCPUID control)

1.8ghz @ 0.976V, 55W, load (under CCPUID control)

2.

**Gigabyte GA-MA69GM-S2H (latest F3a BIOS)**2.1ghz @ 1.056V (orthos stable 24hours): idle: 52W, load: 72W

1.0ghz @ 0.88V, 44W, idle (under CCPUID control)

1.8ghz @ 0.976V, 65W, load (under CCPUID control)

Now, according to this comparison, my pick was definitely the Biostar. The Gigabyte motherboard looks *horrible* in comparison.

But this isn't the end of the story.

At a thread named "My Biostar TF7025-M2 Review: Biostar Raises the Bar", Amourek found the following results for the TF7025 mobo:

1.28Ghz, 0.850V: 43W idle, 53W during Orthos (Small FFT)

2.00Ghz, 1.025V: 47W idle, 67W during Orthos (Small FFT)

2.71Ghz, 1.275V: 57W idle, 102W during Orthos (Small FFT)

Now, this addtion, by itself, doesn't relate in any way to Frank2003's results, BUT, things become interesting when you add the following piece of information to the puzzle:

At a thread named "My Biostar TA690G Review: mATX Overclocking Gem", Amourek found the following results regarding the Biostar TA690G (which is the same mobo that Frank2003 was using), using *

**the same*** parts that he (Amourek) used for the Biostar TF7025 review:5.0 x 253Mhz = 1.27Ghz, 0.900V, 62W, 71W

7.0 x 253Mhz = 1.77Ghz, 1.100V, 64W, 83W

9.5 x 253Mhz = 2.40Ghz, 1.275V, 70W, 108W

*************************************

Now, by extrapolating using the information given here, and using Frank's results as reference, here is the power consumption for all three boards, on the same scale, for ~0.9V @ idle:

Gigabyte GA-MA69GM-S2H =>

**44W**Biostar TA690G-AM2 =>

**31W**Biostar TF7025-M2 =>

**21.5W**And again, the system that these figures relate to, is Frank's system, which consists of:

* AM2 Brisbane 4000+, 2.1ghz

* 2 x 1GB DDR2 memory

* Seagate 750GB 7200rpm SATA drive

* 120W picoPSU with 80W brick

Now, what I find almost impossible to believe, is that once you replace the seagate desktop hard drive, with a laptop hard drive, the Biostar TF7025-M2 result should drop to ~

**10W**!!!, this is lower than what you get with VIA EPIA systems !.