Power Supply

[Ollie30001]

hey, can someone help me chhose a power supply from this http://www.planetmicro.co.uk/ site. (in the cases and psu section on the left)

I have about £70 so i want to know the best power supply i can get for that amount of money (may be able to get a little more)

i need it to be able to handle the new X800 graphics card that i am gonna buy soon so i wanted to make sure i got a good PSU (thats why im askin you lot )

Once youv found one could you post the link on here so i can bye it....cheers...



>>>>>COMPUTER NOOB<<<<<

 

[vegasgmc]

Either one of the Antecs is great. Most of the others were "Generic".

 

[STK]

This should be fine for what you are running.

http://www.planetmicro.co.uk/product_info.asp?stockcode=M003207

 

[RealBlackStuff]

Antec 480W TrueBlue £68.73 at Amazon
http://www.amazon.co.uk/exec/obidos...8016/sr=1-3/ref=sr_1_11_3/026-5972265-4696410

Don't go for any smaller.

This one is not at all bad either:
Article # LN4291
525W HPU-3S525 HiperPower 3rd Gen PSU Quiet Triple Fan (Active Fan Control) Active PFC 23dB £57.58 (inc. VAT)
http://www.scan.co.uk/Products/Products.ASP?CatID=33&Category=Power+Supply&Thumbnails=No

 

[STK]

He should not need 480W, I am running P4 3.0GHz, 2GB DDR RAM, 120GB HD 7,200 RPM, and a RADEON 9800XT 256bit , all on a 420W power supply, and i rarely have a problem.

 

[RealBlackStuff]

Read up on the power requirements for the new X800 and 6900 cards

The suggested power supply for a complete PC (with highest-end
single-CPU ) and the 6800Ultra is 480 watts. That is to ensure that
enough current is available from the +12V rail (at least 18 amps)
for the sum-total of the 6800U, the CPU and the disk-peripherals.
Power-supplies of smaller capacity also generally have lower
12V max. current. A simple recommendation for non-technical
people.

The 6800U card is 110watts max (w/256Meg GDDR3 memory)
The GPU itself is ~ 90 watts max.

The current 5950U and 9800XT cards are around 93 watts max,
GPU ~ 65-70 watts max.

Just because the transistor count in NV40 is doubled over a
NV35 (also on a 0.13u process) does not mean doubled power.
A high percentage of the power is consumed by I/O
buffers, which power only changes with clock-rate. The
clock-rate of the NV40 is 400 Mhz, exactly the same
as a NV35. BTW, IBM builds the NV40 chip; less current
leakage than the (NV35) TSMC process AFAIK.

You should really have a beefy and decent brand name power supply if you
want to venture into the upcoming video cards. I also think the 480W
recommendation was based on a person having a high-end system to begin
with, which I think would be the target audience of such cards in the
first place. Myself, I have a 2.8GHz processor, 1GB RAM, a sound card,
modem, 2 hard drives, 2 optical drives and a floppy drive in my case. I
also have a 9800 Pro video card. My tower case is a Lian-Li PC-60 which
has three case fans in it as well. My current power supply is an
Enermax 431W and I remember having some power problems at first when I
upgraded to my 2.8GHz CPU (along with a new motherboard and RAM) in the
fall of 2003. It turned out to be an oversight of sorts since I had
just about all of my high-drain devices hooked into the same lead. Once
I redistributed things around a little bit, all was fine again. Still,
it was a scare, and in my case, I would believe it if someone said to me
that I had to up my power supply for these new upcoming cards!

 

[STK]

Oh, sorry i was looking at the specs in your signiture. Yes, go big if you plan on getting new, top of the line hardware.

 

[Arris]

I was running the following on a Ahanix SilenX 400w PSU:

-Athlon 64 3200+
-Asus K8VSE Deluxe
-2 x 512mb OCZ EL-DDR PC3500
-Sapphire X800 Pro 256mb
-Creative Audigy 2
-Sony DVD-RW DRU-500A
-2 x 36.7Gb WD Raptors
-2 x 40Gb Seagates
-1 x 80Gb WD Cavier SE
-2 Case fans + HSF

I never had any problems but as stated its safer for future use to go for a larger PSU. Prior to trying to get a silent system I was running an Antec TruePower 550w PSU. The person I sold it to had a Q-Tec 550w psu running a similar system to mine with less hard disks and a 9800XT and was having problems with crashes/lockups. The Antec solved it.

So as RBS's post says make sure that the current available on each rail is high enough to drive all your devices. And a quality PSU like Enermax, Antec etc. over generic unknown brands should be what you look at buying.

My choice would be the Antec TruePower Quiet 480w:
http://www.planetmicro.co.uk/product_info.asp?stockcode=M003208

 

[Ollie30001]

OK, thanks for ur help guys.

 

[Dasimpse]

I have the triple fan one u suggested the hiperfan or whatever its called. But i wanna ask about somethin. when the pc's off and plugged in if i listen to the back of the power supply its makin a quite buzzin noize in bursts u know like an electrical buzz buzz buzzzz buzz with spaces. this has started to worry me, is this coz its so powerful or is it attempting to short out!?

any ideas will be appreciated thx