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Power Supply for 95w 1055t

MOOGLEYS

MOOGLEYS

MOOGLEYS

Soldato
Joined
24 Dec 2004
Posts
19,375
Location
Telford
I have just ordered a 95w x6 1055t and i,m wondering if my 400w PSU will power everything ok...

I,m currently running -

MSI 785G micro atx board
4 gig (4x1gb) ddr3
1GB 4850 GPU
2 x sata hard drives
1 x sata dvd R/W
USB card reader
3 x 120mm fans
400w OCZ Psu

+ the new 1055t 95w when in arrives tomorrow..

I,m thinking i should be ok ? anyone have any ideas..

Cheers
 
If it is a quality 400W it will be fine, if it's a no name I would replace it. 95W should be the worst case scenario for the cpu, ie the most it could ever consume (excluding ocing).
Edit it's ocz, so should be fine.
 
You will find you are limited by the mobo's power regulators.

Same happens for me and several others that use the X6's in mATX boards.

Over about 1.3V the CPU pulls too many W's under load, your 4+1 PWM/MOSFET's heat up like a mad thing, and the board will auto throttle.

Should still be able to get to around 3.6 or so however :)


The only mATX board that seems to get around this is the MSI 890GX one, as it has beasty power cooling.


If you want to take your CPU as far as you can, you will want to either put a fan right over your MOSFETs, and possibly put some heatsinks on them as well.
 
I would be happy with 3.6ghz.. Tbh even at stock it would be more than enough for me.. Dont they autoclock to 3.2 with three cores or something ?

I only really have a M/atx board as it was cheap at the time.. Will see how it goes.
 
but buying a 95w chip and overclocking/overvoltaging it will take the watts back up to the same as the 125w chip.

so whats the point?

95w chips are good at stock for low energy.
 
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MOOGLEYS said:
But at 125w you would be at higher clocks than the 125w chip at standard clocks.
Click to expand...
i thought the voltage is slightly lower on 95w chips so it makes it 95w TDP

so they may need more voltage to clock higher.

example maybe amd as undervoltaged the 1055t 125w to make it sit at 95w but that'll mean less headroom on stock voltage.

maybe i'm wrong but thats what i thought.
 
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a 1090t @ 4ghz 1.42v uses less watts than a 1055t 95w @ 4ghz 1.32v
 
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i can't explain it because i don't know mate

but the psu calculator gave that result.

i've tryed 2 psu calculaters and both give the same result.

even at the same overclock voltage its still higher

43168876.png
 
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The 1055T could be drawing more amps (current) than the 1090T at stock. If they are both 125W parts & the 1055T has a lower default voltage than the 1090T but the same 125W TDP then it would be drawing more amps to end up with the same power at stock.

I dont know if the below is the correct with processors but it is in theory as for electrical power P = V x I so if P is the same in both cases and V is lower for 1 then I must be higher. As the voltage is increased with overclocking then the power drawn by the 2 processors will not increase by the same amount.

For the 1055T:

I = P / V
I = 125 / 1.1
I = 113.63

If you increase the voltage to 1.32v:

P = 1.32 x 113.63
P = 150W

For the 1090T:

I = 125 / 1.3
I = 96.15

Increase voltage to 1.42v:

P = 1.42 x 96.15
P = 136.53W

As you can see from the above in theory due to the difference in current at stock the 1055T will draw more power at those voltages due to the fact that the % increase in voltage of the 1055T from 1.1v to 1.32v (120% of stock V) is greater than the % increase in voltage of the 1090T from 1.3v to 1.42v (1.09% of stock V). This is only due to the fact that they are drawing the same amount of power at stock even though they have different voltages. This would not be the case if you were comparing a 95W 1055T to a 125W 1090T.
 
Someone said:
The 1055T could be drawing more amps (current) than the 1090T at stock. If they are both 125W parts & the 1055T has a lower default voltage than the 1090T but the same 125W TDP then it would be drawing more amps to end up with the same power at stock.

I dont know if the below is the correct with processors but it is in theory as for electrical power P = V x I so if P is the same in both cases and V is lower for 1 then I must be higher. As the voltage is increased with overclocking then the power drawn by the 2 processors will not increase by the same amount.

For the 1055T:

I = P / V
I = 125 / 1.1
I = 113.63

If you increase the voltage to 1.32v:

P = 1.32 x 113.63
P = 150W

For the 1090T:

I = 125 / 1.3
I = 96.15

Increase voltage to 1.42v:

P = 1.42 x 96.15
P = 136.53W

As you can see from the above in theory due to the difference in current at stock the 1055T will draw more power at those voltages due to the fact that the % increase in voltage of the 1055T from 1.1v to 1.32v (120% of stock V) is greater than the % increase in voltage of the 1090T from 1.3v to 1.42v (1.09% of stock V). This is only due to the fact that they are drawing the same amount of power at stock even though they have different voltages. This would not be the case if you were comparing a 95W 1055T to a 125W 1090T.
Click to expand...

Exellent and i,m sure its all good but you are forgetting one big thing...

All the Cool kids have 6 cores.......:):):)
 
@Someone so are u saying the psu calculater result is right?

even a 1050t 125w vs 1050t 95w, it says the 1050t 125w uses slightly less watts at same voltage.
 
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