GeForce GTX 460 (OEM) vs Radeon HD 5770

Intro

Compare those specs to the Radeon HD 5770, which has GPU core speed of 850 MHz, and 1024 MB of GDDR5 RAM set to run at 1200 MHz through a 128-bit bus. It also is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce GTX 460 (OEM)		150 Watts
	Difference: 42 Watts (39%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 (OEM) should perform much faster than the Radeon HD 5770 overall. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 32000 (42%)

Texel Rate

The GeForce GTX 460 (OEM) is a small bit (more or less 7%) more effective at AF than the Radeon HD 5770. (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 2400 (7%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 460 (OEM) is a better choice, by a large margin. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 7200 (53%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.