Power consumption problem with 4890

[ethilen]

hi,please please help me,I dont know what to do,I'm tired of searching,I want to buy ATI HD 4890,and I dont know exactly how much wattage this card uses,everywhere I searched,I got a new number,I dont know which number is real,I dont know that my PSU would be able to support this card or not,my current system is this:

cpu :core2 duo e6750

P5k mainboard asus

2gig ocz ram bus 800

250gig maxtor hard

vga:8600gt

power supply:GP530ab,real watt : 530

would I be able to use 4890 without buying new PSU?

 

[jaguarskx]

A non overclocked HD 4890 uses approximately 130w by itself or almost 11 amps on the 12v rail.

I don't recognize your power supply. I mainly buy PSUs with excellent build quality, specifically Seasonic PSUs (also makes some PSUs for Corsair, PC Power & Cooling and Antec).

I think the average 500w PSU provides 28 amps on the 12v rails or 336w. You need to look at the PSU's sticker to determine what the total power output on the 12v rail is.

 

[ethilen]

A non overclocked HD 4890 uses approximately 130w by itself or almost 11 amps on the 12v rail.

I don't recognize your power supply. I mainly buy PSUs with excellent build quality, specifically Seasonic PSUs (also makes some PSUs for Corsair, PC Power & Cooling and Antec).

I think the average 500w PSU provides 28 amps on the 12v rails or 336w. You need to look at the PSU's sticker to determine what the total power output on the 12v rail is.

hi,thank u very much for replying,on one side of my psu has been written this:

12v1==>18amp
====>400 watt
12v2==>17amp
=========>513watt
3.3v==>30amp
===>185watt
5v==>30amp
-------------------------------------------------------
-12v===>0.3amp==>3.6watt
====>16watt
+5v/sb===>2.5amp==>12.5watt

according to these specs,400 watt is total power output on the 12v rail,and I dont know that if I buy 4890,my psu can handle with it,becuase the other components(hard,cpu,dvd writer,2 fans,motherboard and ram) may use from this rail,I mean 12v rail,and if they do,then I might have problem with psu,and I dont know if other components use from this rail (12v) or not.

do you think my psu has enough wattage to support 4890?? thank you so much

 

[jaguarskx]

Overall your system does not use a lot of power. Therefore, technically speaking, the PSU you have should be able to handle the HD 4890, at least on paper. The main issue is the quality of your PSU which cannot be determined.

-----------------------------------------------------------
Just a little info about how to read the PSU label.

Based on the above specs the PSU can provide a total of 420w; 216w on 12v1 and 204w on 12v2. The watts listed above are peak value and is only for a very, very short period of time. Basically they represent the maximum spike.

You PSU is rated for 530w of power. It cannot exceed that rating safely. While the label does specific it can provide up to 420w on the 12v rails, that is only true if the other rails do not draw more than 110w.

-----------------------------------------------------------

Not all components draws power from the 12v rail. The main components drawing power from those rails are the CPU and GPU. Others include the main motor mechanism in HDDs and optical drives and finally fans.

Based on the components you listed I would say peak power consumption on the 12v rails with a HD 4890 will hover at around 230w - 240w which is safely within the 420w max power available on the 12v rail of your PSU.

However, as I mentioned before, there is no way to determine the build quality of a generic PSU (at least not without expensive testing equipment). I a mentioned before, I am using willing to spend the $$$ on a PSU that I know I can trust.

 

[ethilen]

Overall your system does not use a lot of power. Therefore, technically speaking, the PSU you have should be able to handle the HD 4890, at least on paper. The main issue is the quality of your PSU which cannot be determined.

-----------------------------------------------------------
Just a little info about how to read the PSU label.

Based on the above specs the PSU can provide a total of 420w; 216w on 12v1 and 204w on 12v2. The watts listed above are peak value and is only for a very, very short period of time. Basically they represent the maximum spike.

You PSU is rated for 530w of power. It cannot exceed that rating safely. While the label does specific it can provide up to 420w on the 12v rails, that is only true if the other rails do not draw more than 110w.

-----------------------------------------------------------

Not all components draws power from the 12v rail. The main components drawing power from those rails are the CPU and GPU. Others include the main motor mechanism in HDDs and optical drives and finally fans.

Based on the components you listed I would say peak power consumption on the 12v rails with a HD 4890 will hover at around 230w - 240w which is safely within the 420w max power available on the 12v rail of your PSU.

However, as I mentioned before, there is no way to determine the build quality of a generic PSU (at least not without expensive testing equipment). I a mentioned before, I am using willing to spend the $$$ on a PSU that I know I can trust.

Hi,I dont know how to thank you my friend,I do appreciate that!! THANK YOU SO MUCH!

 

[ethilen]

Overall your system does not use a lot of power. Therefore, technically speaking, the PSU you have should be able to handle the HD 4890, at least on paper. The main issue is the quality of your PSU which cannot be determined.

-----------------------------------------------------------
Just a little info about how to read the PSU label.

Based on the above specs the PSU can provide a total of 420w; 216w on 12v1 and 204w on 12v2. The watts listed above are peak value and is only for a very, very short period of time. Basically they represent the maximum spike.

You PSU is rated for 530w of power. It cannot exceed that rating safely. While the label does specific it can provide up to 420w on the 12v rails, that is only true if the other rails do not draw more than 110w.

-----------------------------------------------------------

Not all components draws power from the 12v rail. The main components drawing power from those rails are the CPU and GPU. Others include the main motor mechanism in HDDs and optical drives and finally fans.

Based on the components you listed I would say peak power consumption on the 12v rails with a HD 4890 will hover at around 230w - 240w which is safely within the 420w max power available on the 12v rail of your PSU.

However, as I mentioned before, there is no way to determine the build quality of a generic PSU (at least not without expensive testing equipment). I a mentioned before, I am using willing to spend the $$$ on a PSU that I know I can trust.

excuse me,but do you know how much power one optical drive uses?and what about mainboard?

 

[Kari]

both HDDs and optical drives typically use around 10-15W max, mobos somewhere around 20-40W depending on the model, highend ones with plenty of power components for the cpu (and fancy heatsinks) use the most

 

[jaguarskx]

7200RPM HDDs and optical drives typical consume about 12w on the 12v rail to drive the main motor. They also draw power from the 5v rail for the read/write heads; probably about 6w.

Floppy drives draw power from the 3.3v rail.

Mobos draw power from both 3.3v and 5v rails. If it has integrated graphics then it might also draw power from the 12v rail (maybe). Power consumption is probably 20w - 60w depending on how many extra features the mobo has.

 

[ethilen]

7200RPM HDDs and optical drives typical consume about 12w on the 12v rail to drive the main motor. They also draw power from the 5v rail for the read/write heads; probably about 6w.

Floppy drives draw power from the 3.3v rail.

Mobos draw power from both 3.3v and 5v rails. If it has integrated graphics then it might also draw power from the 12v rail (maybe). Power consumption is probably 20w - 60w depending on how many extra features the mobo has.

wow!!!thank you my dear friend,thank you so so much,If you didnt tell me these info,I wouldnt know what to do,but now I know what is gonig on.

 

[ethilen]

both HDDs and optical drives typically use around 10-15W max, mobos somewhere around 20-40W depending on the model, highend ones with plenty of power components for the cpu (and fancy heatsinks) use the most

thank you so much

 

[ethilen]

7200RPM HDDs and optical drives typical consume about 12w on the 12v rail to drive the main motor. They also draw power from the 5v rail for the read/write heads; probably about 6w.

Floppy drives draw power from the 3.3v rail.

Mobos draw power from both 3.3v and 5v rails. If it has integrated graphics then it might also draw power from the 12v rail (maybe). Power consumption is probably 20w - 60w depending on how many extra features the mobo has.

sorry to bother you again my friend,I searched and I found out that a RAM memory uses from 3.3v rail,but I want to know that how much Watt it (2gig with bus 800) uses?