Need help abt GPU...

[Red Devil]

hello...guyz i want 2 buy a HD4850 or HD4870...
but problem is my psu is thermaltake 400W...so,can i run them by this psu with out any problem...??
or i need better psu...???
plz tell me...

[coldfire7]

U can run the 4850... but might face prob with the 4870....

[minitt]

hello...guyz i want 2 buy a HD4850 or HD4870...
but problem is my psu is thermaltake 400W...so,can i run them by this psu with out any problem...??
or i need better psu...???
plz tell me...

is it thermaltake 400 watt litepower edition PSU????

if yes then consider urself buying another PSU such as Delux 500 watt W Active PFC..im using it by myself.(with HD 4850)

I have tested this PSU >>>TT lite power 400 watt with digital multimeter and the reading wasnt satisfactory..11.72 on load..(tested system had dual core 2.8GHZ + x1600pro around 50 watt ) where HD 4850 is 110 watt so compare ur setup wid this...

now u know why im telling u not to use that PSU with hd 4850.

sell ur psu...add som get a decent psu atleast 450 watt or above ( i would recommand 500 watt to be safe)

cheers.

[Red Devil]

is it thermaltake 400 watt litepower edition PSU????

if yes then consider urself buying another PSU such as Delux 500 watt W Active PFC..im using it by myself.(with HD 4850)

I have tested this PSU >>>TT lite power 400 watt with digital multimeter and the reading wasnt satisfactory..11.72 on load..(tested system had dual core 2.8GHZ + x1600pro around 50 watt ) where HD 4850 is 110 watt so compare ur setup wid this...

now u know why im telling u not to use that PSU with hd 4850.

sell ur psu...add som get a decent psu atleast 450 watt or above ( i would recommand 500 watt to be safe)

cheers.

Yap...my psu is TT 400W lite power...

[minitt]

wel.... then u know my advice

[Muradd9]

I have tested this PSU >>>TT lite power 400 watt with digital multimeter and the reading wasnt satisfactory..11.72 on load..(tested system had dual core 2.8GHZ + x1600pro around 50 watt ) where HD 4850 is 110 watt so compare ur setup wid this...

Is it dualcore 2.8ghz or pentium d 2.8ghz ?
Ami ekjonke 90nm pentiun4 3.06ghz overclock kore diyesilam. P4 [email protected] +Sapphire pure crossfire|| + 512mb 1600pro+ 2gb ddr1+Dvdwr+Hdd kono problem sara space400watt psu diye valo vabe cholto.
July 2008 e ami 2ta tt litepower400watt kinesilam uac theke. Ekta amar silo. Duitari performance valo.
Ekta pc: pdc [email protected]+xfx8800 zalman+3gb(2gb+1gb)800mhz ddr2+Tv card+2samsung(250+160)hdd+philips drw+Asus drw+2 120mm led fan.
Arekta pc: pdc [email protected] + gigabyte p35ds3l+ 4gb(1gb*4stick) ddr2 800mhz transcend + lg drw+Samsung 120gb+ 2fan(80mm+90mm)+sapphire hd4850.

2nd pc te hd4850 20 diner moto use hoyese. Ekta multimeter manage korte parle 12v load voltage check korte partam.
@Red devil apnar pc 4870 cholbe kintu 12v rail e load 16a er moto hobe .tai na ure korai valo. Tr2 420watt apnar pc+4870 er jonno enough. R lite power diye hd4850 valomoto cholbe.
@minitt oi dual core pc tar full config ta ki silo?

[shaikh_imtiaj]

bro go to the website of thermaltake. There u will see a section of power calculator. just fill up the box with the hardware u have then u will be able to know how much power do u need.
Link
http://www.thermaltake.outervision.com/
With 4870 and ur cauurent configuration u need 340watt at 90% load in everything.
_________________________________

[aayman]

Thanks for the link to the power calculator, as it turns out, a 420W PSU is enough for a HD 4870

[Muradd9]

Thanks for the link to the power calculator, as it turns out, a 420W PSU is enough for a HD 4870

But psu like delux 420watt with [email protected] is not enough.

[faisal.amir.bd]

Thanks for the link to the power calculator, as it turns out, a 420W PSU is enough for a HD 4870

I would not recommend it; if you have noticed, the PSU calculator only gives the total wattage without any information about the juice needed on the +12V rails. While the 420W may run the 4870, it might lead to general system instabilities and lead towards shortening the lifespan of the components...

The 420W Thermaltake available in Bangladesh only has 25A on the 12V rails....not safe...

[Muradd9]

Without overclocking litepower400watt may able to run hd4870. Btw litepower 400watt is a 350watt psu with 400watt peak output

[minitt]

@ murad it was DUAL core 2.8 ghz +x1600 pro+1.5GB DDR2+SATA+DVD R.......

lite power (brand new..only 4 days old) scored 11.72 on load....with above setup while hooked up with multimeter.......


@Red Devil if u dun care bout running ur system with 11.6V u can go ahead with lite power TT...up to u...nd it will run

anyway....but on the edge.

Without overclocking litepower400watt may able to run hd4870. Btw litepower 400watt is a 350watt psu with 400watt peak output

where did u find this info??????

Ami ekjonke 90nm pentiun4 3.06ghz overclock kore diyesilam. P4 [email protected] +Sapphire pure crossfire|| + 512mb 1600pro+ 2gb ddr1+Dvdwr+Hdd kono problem sara space400watt psu diye valo vabe cholto.

can u pm me the tuning of this PC?

[Muradd9]

@minitt Red devil er pc te 4870 lagale gaming er somoy hdd,dvd sobkisu eksathe calculate korle 3.3v,5v load 5a kore r 12v 15a er moto hoi. Tai litepower 400watt(12v 19a) ok jodi 12v 11.80v er upore thake(minimum 11.40v holeo ami 11.80v niche valo mone kori na)

[minitt]

@minitt Red devil er pc te 4870 lagale gaming er somoy hdd,dvd sobkisu eksathe calculate korle 3.3v,5v load 5a kore r 12v 15a er moto hoi. Tai litepower 400watt(12v 19a) ok jodi 12v 11.80v er upore thake(minimum 11.40v holeo ami 11.80v niche valo mone kori na)

dat is wut i have been saying all along...

n 19A lekha thaklei je 19AMP dibe...ITS a wrong assumption

[Muradd9]

Lekha ase 14a & 15a r peak 16a & 18a .combined 19a. Tahole keno combined 19a hobe na. 500watt tr2 te lekha ase 14a & 15a tahole ki ekhane combined 15a\16a ase. Funny comment..
Lol.

Jara valo brand tara combined lekhe. 14a+15a combined 19a lekhar mane tara kisu lukaini. Valo brand jokhon combined print kore na tokhon kisu lukai.
Delux 500watt e 12v combined koto? 20a+22a=42a! very high quality 550~600watt psu te 40~48a thake r price 10000taka ba 120usd er beshi hoi. Tai ekhane tara psu overrate korese

Litepower e noi.

[minitt]

wut is ur point.???? basically??

[Muradd9]

dat is wut i have been saying all along...

n 19A lekha thaklei je 19AMP dibe...ITS a wrong assumption

Ei post er mane ki? thermaltake ki generic psu brand je 12v rail e ja lekha thake ta thekbe na?
Valo brand jokhon psu overrtae kore tokhon tatal watt e kore kitu ampiare kore na. Ekho jodi bolen ei information kothai pelam tahole amar kisu bolar nai.

wut is ur point.???? basically??

Ami apnake ekta link diyesilam jekhane delux 500watt psu je originallay 350watt psu tar proman silo . Oi rokom aro duita link ase amar kase .
Delux 500watt psu te 12v 20a & 22a lekha ase. Tahole cnmbined koto ampier ase? dhorlam 22a combined. Tahole ekta chaina brand delux er 350watt(Delux 500watt originally 350watt) psu te jodi 22a thake tahole tharmaltake er moto nam kora brand er 400watt psu te keno combined 19a thakbe na?

R delux 500watt(350watt) psu diye jodi onekei 4870 chalate pare r apni onnder ke kinte bolen tahole keno tt litepower400watt diye 4850\4870 chalano jabe na? R premium psu calculator diye Red devil er pc+4870 er 12v amp. ase only 16a.
Eitai amar point.

[minitt]

Ei post er mane ki? thermaltake ki generic psu brand je 12v rail e ja lekha thake ta thekbe na?
Valo brand jokhon psu overrtae kore tokhon tatal watt e kore kitu ampiare kore na. Ekho jodi bolen ei information kothai pelam tahole amar kisu bolar nai.

1st of all i dun trust ThermalTake with their lower end PSUs....

caz.... c 4 urself....

http://www.hardwaresecrets.com/article/332/9

u said >>>> " litepower 400watt is a 350watt psu with 400watt peak output"

that was pure power 420 watt(actually 355w) in the review nd u r taking side on lite power 400watt and u r

claiming it can provide 350 watt!!!!....

well.. in ur dreams ..may b

pure power 420 watt jeikhane 355 watt max dite pare oi jaigai litepower 400 watt 1a psu 350 watt dite parbe..... do u really believe it....!!!!!

So, just becaz of brand name u dun have to trust it with ur eyes closed.

[Mazhar]

its not just thermaltake, its basically almost every PSU manufacturer who overrates their wattages (average, mind u)

what they simply do, is show an output with lower operating temperatures(and ambient temperatures too). hence at higher temperatures, rated wattage = fail

but keep in mind that even if the PSU can output the rated wattage, it will be peak power of the PSU. average power will usually be lower at the lower end PSU's. hence, prolonged use of the PSU above its average output will degrade it faster than it should. and some PSU's will simply fail to even output their rated output even at its maximum output capacity

So technically, the PSU's should be able to output the rated wattage, but cannot always sustain that load over a great period of time. This only applies to lower end PSU's though

[Muradd9]

Without overclocking litepower400watt may able to run hd4870. Btw litepower 400watt is a 350watt psu with 400watt peak output

@minitt Ei post keno un usefull post please explaine.

@mazhar and minitt what is the safe avarage load and peak load for a 600watt psu and what is the % of load of a psu is safe for long time use ?