Atamzsiktrop wrote:I'm afraid nothing on your list is sufficient anymore. A new GPU is not gonna do a whole lot with that CPU (at least not in modern games, even the least requiring ones).
I think the CPU is more grunty than the GPU, at least. Not that it isn't weak, but a Wolfdale CPU can only be
so bad, while the GeForce 405 is truly bottom of the barrel. That GPU is surely the bottleneck of this system.
It might be a good idea to go for an AMD GPU, since they may be better bang for the buck, but I don't know enough about AMD GPUs to recommend anything. If you go for an nVidia GPU, I'd have the following recommendations:
- Go for at least one step above the absolute entry-level GPUs. The price difference isn't extreme, but the performance uplift can be very significant. Like, the GF 710 goes for ~$50 here, and the GF 730 goes for ~$80, while the performance is most likely more than twice.
- Watch out very dearly for nVidia's extremely confusing marketing. There are currently three products selling as the GeForce 730, and they are extremely different. One is an old rebranded Fermi GPU with 96 ALUs, one is a proper Kepler with 384 ALUs and DDR3 memory, and the third is the same Kepler GPU but with GDDR5 memory. Avoid the first like the plague, and if the prices are about the same (they are here), get the GDDR5 one, even if it has slightly less VRAM; the difference in bandwidth is very significant. I have no idea how nVidia get away with this, and the GeForce 630 situation was even worse.
I myself use a GeForce 750 in my main computer, which is very sufficient for my needs, and goes for ~$140 here.
As for the PSU, it is weak indeed, but I wouldn't be so sure that it can't drive an entry-level discrete GPU. Even my GeForce 750 only needs 55 W, and that Pentium CPU is listed at 65 W. Even with other power sinks, that does leave some margin. If I were you, I'd try the PSU you have and switch only if necessary. You're not likely to actually damage the computer by overloading the PSU (but that being said, if the PSU is a really shitty brand, it may start doing bad things if overloaded). If you have one of those socket-level power meters, though, now would be a good time to use it to see how much power your system actually uses. It was some time since I last checked, but IIRC my computer uses around 100-200 W depending on load.
Also, clean out your CPU cooler. You may very well be thermally limited by bad airflow.