GeForce GTX 460 1GB vs Radeon HD 4750

Intro

Compare all of that to the Radeon HD 4750, which makes use of a 40 nm design. AMD has set the core frequency at 730 MHz. The GDDR5 RAM runs at a speed of 800 MHz on this particular model. 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 4750		75 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 85 Watts (113%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 1GB should be much faster than the Radeon HD 4750 in general. (explain)

GeForce GTX 460 1GB		115200 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 64000 (125%)

Texel Rate

The GeForce GTX 460 1GB will be a lot (about 62%) better at AF than the Radeon HD 4750. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 14440 (62%)

Pixel Rate

The GeForce GTX 460 1GB will be quite a bit (approximately 85%) better at anti-aliasing than the Radeon HD 4750, and will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 9920 (85%)

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 max amount of data (counted in MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.