GeForce GTX 460 2GB vs Radeon HD 4750

Intro

Compare those specs to the Radeon HD 4750, which uses a 40 nm design. AMD has set the core frequency at 730 MHz. The GDDR5 memory runs at a frequency of 800 MHz on this particular card. It features 640(128x5) SPUs as well as 32 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750		75 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 85 Watts (113%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 2GB should be quite a bit faster than the Radeon HD 4750 overall. (explain)

GeForce GTX 460 2GB		115200 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 64000 (125%)

Texel Rate

The GeForce GTX 460 2GB is quite a bit (about 62%) faster with regards to texture filtering than the Radeon HD 4750. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 14440 (62%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 460 2GB is a better choice, by a large margin. (explain)

GeForce GTX 460 2GB		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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's 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 amount of texture map elements (texels) that can be processed 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 video card will be at handling 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 the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.