Ati radeon hd 5750 1gb or nvidia gts 450 1gb, which is the cheap and right graphics card for me?

The Radoen HD 5770 is the better card- it's a level above the GTS 450 and Radeon HD 5750, which are rival cards. The GTS 450 has the advantage of lower power consumption (it only requires a 400W psu while the HD 5770 requires 450W minimum), better driver support, and up until recently, lower price. But when the 5770 is on sale for $99 after rebate that pretty much kills any competition.

Why pay the same price for lower-end cards like the GTS 450 or Radeon HD 5750? The GTS 450 holds its own at 1680x1050 resolution (sometimes even matching the 5770) and being an Nvidia card, has hardware-level PhysX support. It's also a strong perform in DX11 titles which use Tesselation.

But overall, the HD 5770 performs better- especially at 1920x1080. Looking at technical specs of graphics cards like stream processor count, core speed, memory speed etc doesn't work for comparing AMD vs Nvidia cards- their GPUs and design approaches are too different, those numbers don't translate. For example, the 128-bit Radeon HD 4770 is superior to the 256-bit GeForce 9800GT and Radeon HD 4830 because the 4770's narrower bus leads to faster GDDR5 video memory.

But it's slower than the 256-bit GTS 250, which has GDDR3 video memory. The Radeon HD 5570 has 400 stream processing units but it's much slower in games than the GeForce GT240, which has only 96 stream processors. AMD and Nvidia use the underlying technology differently, so just going by numeric values on specs doesn't give you an accurate comparison.

What matters isn't which card has a higher memory bandwidth or core clock speed, but which card actually uses the technology better and gets higher fps. For that, you need to read reviews... one which show actual in-game results. http://www.tomshardware.com/reviews/gefo... http://www.bit-tech.net/hardware/graphic... http://www.techspot.com/review/359-nvidi... http://www.tomshardware.com/reviews/gefo… Rankings from videocardbenchmark.net aren't the greatest either, because those only reflect how cards perform on synthetic tests, not in games which actually use DirectX and OpenGL.

So in a nutshell, the GTS 450 is superior to it's direct competitor the Radeon HD 5750, but isn't quite a match for the 5770. A slightly better card than the Radeon HD 5770 is the GeForce GTX 550Ti, but it's also more expensive. Currently I don't think you can beat the 5770 for the price.

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