GeForce GTX 460 1GB vs Radeon HD 4770

Intro

Compare those specifications to the Radeon HD 4770, which features GPU clock speed of 750 MHz, and 512 MB of GDDR5 RAM running at 800 MHz through a 128-bit bus. It also is made up of 640(128x5) SPUs, 32 Texture Address Units, and 16 Raster Operation 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

The GeForce GTX 460 1GB should theoretically perform a lot faster than the Radeon HD 4770 overall. (explain)

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

Texel Rate

The GeForce GTX 460 1GB will be a lot (approximately 58%) more effective at anisotropic filtering 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 should be much (approximately 80%) more effective at anti-aliasing than the Radeon HD 4770, and also will 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: Bandwidth is the maximum amount of information (measured in MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total amount of texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.