GeForce GTX 460 (OEM) vs Radeon HD 4770

Intro

Compare all that to the Radeon HD 4770, which uses a 40 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR5 RAM works at a frequency of 800 MHz on this card. It features 640(128x5) SPUs along with 32 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4770		80 Watts
GeForce GTX 460 (OEM)		150 Watts
	Difference: 70 Watts (88%)

Memory Bandwidth

The GeForce GTX 460 (OEM), in theory, should be quite a bit faster than the Radeon HD 4770 in general. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
Radeon HD 4770		51200 MB/sec
	Difference: 57600 (113%)

Texel Rate

The GeForce GTX 460 (OEM) will be a lot (about 52%) better at AF than the Radeon HD 4770. (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
Radeon HD 4770		24000 Mtexels/sec
	Difference: 12400 (52%)

Pixel Rate

The GeForce GTX 460 (OEM) is a lot (more or less 73%) faster with regards to AA than the Radeon HD 4770, and also capable of handling higher resolutions better. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
Radeon HD 4770		12000 Mpixels/sec
	Difference: 8800 (73%)

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 (in units of MB per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's 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 rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.