GeForce GTX 460 1GB vs Radeon HD 4770

Intro

Compare those specifications to the Radeon HD 4770, which features core speeds of 750 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4770		80 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 80 Watts (100%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 1GB is 125% quicker than the Radeon HD 4770 in general, because of its greater bandwidth. (explain)

GeForce GTX 460 1GB		115200 MB/sec
Radeon HD 4770		51200 MB/sec
	Difference: 64000 (125%)

Texel Rate

The GeForce GTX 460 1GB is much (more or less 58%) better at AF than the Radeon HD 4770. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
Radeon HD 4770		24000 Mtexels/sec
	Difference: 13800 (58%)

Pixel Rate

The GeForce GTX 460 1GB is a lot (about 80%) faster with regards to anti-aliasing than the Radeon HD 4770, and should be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
Radeon HD 4770		12000 Mpixels/sec
	Difference: 9600 (80%)

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: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics 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 number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.