FuzzySquirrel wrote:So.. I got this beautiful ATi HD 4870 1GB....buuuuut. Everytime I try plugging the monitor in nothing happens. the fan is spinning and Windows 7 Recognizes the Card in the Device Manager. I think it may be my Power Supply (Eagle Tech 550w) Or the DVI > VGA connector. Any Ideas?
A test you can try is to try it on someone's DVI monitor, thereby eliminating the chance of it being the DIV -> VGA connector.
can you give any more details?
I looked up the power supply and it doesn't have a lot of amps on the 12V rail- Also the power supply states that it has 1 x 6pin pci-e connector, but looking up the HD4870 it says that it requires 2 x 6pin pci-e, so maybe you haven't/can't plug in both of the connectors. Either way I would suggest that the power supply you have is a little weak on the power front, and also a bit weak on the quality front as well.
The main points you want to check for power supplies are
- Power output, See how much power is recommended on a system for your card, the 4870 will probably need at least 500W, although this also depends on the quality of the power supply.
- Amps on the 12V rail, modular power supplies spread these across multiple rails for more stability, for a non-SLI gaming rig you probably want a powerful single rail though.
- Connectors, check how many connectors your graphics card needs.
- Quality, there are some well known brands which are very good quality (Corsair being one of them). Bad quality cheapo power supplies can damage components, or will just die quicker. Good power supplies last longer.
- Size, check it actually fits in your case- almost made this blunder myself where the power supply fitted but the thick heavy cables had to be carefully arranged to fit in the case without thwarting the cooling.
If you work out that it is the power supply you may need to splash out a bit. A power supply I can reccommend is
this, or one in the same series. I run a thirsty gtx260 on one of these, it's incredible quality, glances off stormy weather where the power is a bit instable, and has plenty of juice if I feel like a bit of an upgrade
~Penguin