GeForce GTX 460 1GB vs Radeon HD 4750

Intro

Compare those specs to the Radeon HD 4750, which comes with a GPU core clock speed of 730 MHz, and 512 MB of GDDR5 RAM running at 800 MHz through a 128-bit bus. It also is made up of 640(128x5) Stream Processors, 32 TAUs, and 16 ROPs.

Display Graphs

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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 will be 125% faster than the Radeon HD 4750 overall, due to its greater bandwidth. (explain)

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

Texel Rate

The GeForce GTX 460 1GB should be much (more or less 62%) better at texture filtering 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 is a lot (approximately 85%) faster with regards to FSAA than the Radeon HD 4750, and also capable of handling higher resolutions while still performing well. (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 largest amount of data (measured in megabytes per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per 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 number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.